A positive electrode active material includes: a plurality of composite particles, wherein the plurality of composite particles include: lithium-nickel composite oxide particles containing lithium (Li), nickel (Ni), and an element M in an amount of substance ratio of Li:Ni:M=y:1−x:x, wherein, 0≤x≤0.70, 0.95≤y≤1.20, and the element M is at least one element selected from Mn, V, Mg, Mo, Nb, Ti, Co, and Al; and a tungsten and lithium containing compound disposed on a surface of the lithium-nickel composite oxide particles, wherein a proportion of segregated particles is 0.1% or less by number ratio, and wherein a ratio of tungsten atoms in the tungsten and lithium containing compound to nickel and element M atoms is 0.05 at. % or more and 3.0 at. % or less.
XYZZ (wherein the element M is an element selected from Cs, Rb, K, Tl, In and the like, and 0.001 ≤ Y ≤ 1.0 and 2.2 ≤ Z ≤ 3.0). The infrared-absorbing fiber structure is characterized in that the particle diameter of the microparticles is 1 nm to 200 nm inclusive, and the content of the microparticles per unit area of the structure is 0.05 g/m2to 8.0 g/m2 inclusive. The infrared-absorbing material microparticles that have absorbed solar energy generates heat so that the drying of water contained in the structure can be promoted.
D01F 6/90 - Monocomponent man-made filaments or the like of synthetic polymersManufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds of polyamides
D03D 15/20 - Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads
D04B 21/00 - Warp knitting processes for the production of fabrics or articles not dependent on the use of particular machinesFabrics or articles defined by such processes
D06M 11/48 - Oxides or hydroxides of chromium, molybdenum or tungstenChromatesDichromatesMolybdatesTungstates
The invention provides a method for producing valuable metals from raw material containing the valuable metals containing Cu, Ni, and Co, the method including: a preparation step of preparing a raw material containing at least Li, Al, and the valuable metals; a reductive melting step; and a slag separation step of separating slag from the reduced product to recover an alloy, wherein in any one or both of the preparation step and the reductive melting step, a flux containing calcium (Ca) is added to the raw material, and in the reductive melting step, while cooling the furnace wall of the melting furnace by the cooling means, the thickness of the slag layer is adjusted so that the temperature of the interface between a layer of the alloy and a layer of the slag is higher than the temperature of the refractory surface of the furnace wall in the melting furnace.
An infrared curable ink composition includes infrared absorbing particles and a thermosetting resin. The infrared absorbing particles include particles of a complex tungsten oxide represented by general formula MxWyOz (where M element is one or more elements selected from H, He, alkali metals, alkaline earth metals, rare-earth elements, Mg, Zr, Cr, Mn, Fe, Ru, Co, Rh, Ir, Ni, Pd, Pt, Cu, Ag, Au, Zn, Cd, Al, Ga, In, Tl, Si, Ge, Sn, Pb, Sb, B, F, P, S, Se, Br, Te, Ti, Nb, V, Mo, Ta, Re, Be, Hf, Os, Bi, and I; W is tungsten, O is oxygen, 0.001≤x/y≤1, and 3.0
C09D 11/101 - Inks specially adapted for printing processes involving curing by wave energy or particle radiation, e.g. with UV-curing following the printing
C09D 11/033 - Printing inks characterised by features other than the chemical nature of the binder characterised by the solvent
C09D 11/037 - Printing inks characterised by features other than the chemical nature of the binder characterised by the pigment
Provided is a method capable of safely and efficiently recovering valuable metals from raw materials including a waste lithium ion battery and the like. The present invention provides a method for producing valuable metals from a raw material containing the valuable metals containing Cu, Ni, and Co, the method including: a preparation step of preparing a raw material containing at least Li, Al, and the valuable metals; a reductive melting step of subjecting the raw material to a reductive melting treatment using a melting furnace provided with a cooling means for cooling a furnace wall from an outside to obtain a reduced product containing an alloy containing the valuable metals and slag; and a slag separation step of separating slag from the reduced product to recover an alloy, wherein in any one or both of the preparation step and the reductive melting step, a flux containing calcium (Ca) is added to the raw material, and in the reductive melting step, while cooling the furnace wall of the melting furnace by the cooling means, the thickness of the slag layer is adjusted so that the temperature of the interface between a layer of the alloy and a layer of the slag is higher than the temperature of the refractory surface of the furnace wall in the melting furnace.
Provided is a method for smelting nickel-containing oxide ore for which the generated amount of CO2 is reduced and the nickel recovery ratio is high. The present invention is a method for smelting nickel-containing oxide ore, comprising: a hydrogen reduction step S3 in which a reduction treatment is carried out while supplying hydrogen, as a reducing agent, to a raw material including nickelcontaining oxide ore; a melting step S4 for carrying out a melting treatment on the reduced product obtained by the reduction treatment; and a recovery step S5 for separating slag from the melted product obtained by the melting treatment and recovering metal including nickel. Also, the method preferably further includes a pelletizing step in which the raw material including nickel-containing oxide ore is pelletized. The pelletized raw material is subjected to the reduction treatment in the hydrogen reduction step.
KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION (Japan)
Inventor
Tanaka, Yoshiyuki
Hirajima, Tsuyoshi
Aoki, Yuji
Miki, Hajime
Suyantara, Gde Pandhe Wisnu
Abstract
A flotation recovery rate prediction device is for predicting, in flotation that separates a separation target metal from ores in which a plurality of ores containing a plurality of minerals are mixed, a recovery rate of the separation target metal and includes a reception unit configured to receive a desired recovery rate of the separation target metal; an acquisition unit configured to acquire information indicating a relationship between a soluble metal ratio and a mineral content percentage and information indicating a mineral content percentage and a recovery rate of the separation target metal for each of the ores; a calculation unit configured to calculate a mixing ratio of the ores for achieving the desired recovery rate of the separation target metal, based on the information indicating the relationship between the soluble metal ratio and the mineral content percentage and the information indicating the mineral content percentage and the recovery rate of the separation target metal for each of the ores; and an output unit configured to output information indicating the calculated mixing ratio of the ores.
The present invention provides Li-containing slag which is obtained by melting a starting material such as waste lithium ion batteries that contain Li and Al, and which has a slag melting point that is effectively controlled to a specific temperature or less, while suppressing the addition amount of a flux, wherein Li is effectively concentrated by suppressing the amount of slag. The present invention provides Licontaining slag which is obtained by melting a starting material that contains waste lithium ion batteries which contain lithium (Li) and aluminum (Al), and which is characterized in that: relational expressions Al/Li < 5 and (silicon (Si))/Li < 0.7 are satisfied in terms of the mass ratio; and 30% by mass or less of Al, 6% by mass or more of Mn, 3% by mass to 20% by mass of Li and 0% by mass to 7% by mass of Si are contained therein.
An infrared absorbing composite fine particles whose surfaces are coated with a coating film containing one or more selected from a hydrolysis product of a metal chelate compound, a polymer of the hydrolysis product of the metal chelate compound, a hydrolysis product of a metal cyclic oligomer compound, and a polymer of the hydrolysis product of the metal cyclic oligomer compound, wherein a silicon compound is present in one or more locations selected from within the coating film, on the coating film, and the vicinity of surfaces of the infrared absorbing composite fine particles.
Provided is a method for recovering valuable metals that makes it possible to efficiently recover valuable metals at a high recovery rate. The present invention is a method for recovering the valuable metal from a raw material that contains the valuable metal. This method comprises: a preparation step for preparing a raw material; a melting step for introducing the raw material into a melting furnace and heating and melting the raw material to yield an alloy and a slag; and a slag separation step for separating the slag and recovering a valuable metal-containing alloy. The redox degree is adjusted in the melting step by introducing, as a reducing agent, scrap of a wound body, the wound body being an electrode assembly in which a positive electrode and a negative electrode are wound insulated from each other by a separator and carbon is used in the negative electrode.
The invention provides a method by which a valuable metal is recovered, in particular iron. A method for producing a valuable metal containing cobalt (Co), the method comprising: a preparation step in which a starting material that contains at least iron (Fe) and a valuable metal is prepared; a melting step in which a melt is obtained by heating and melting the starting material, and the melt is subsequently formed into a molten material that contains an alloy and slag; and a slag separation step in which the slag is separated from the molten material, thereby recovering the alloy containing the valuable metal. In the preparation step, the Fe/Co mass ratio in the starting material is controlled to 0.5 or less; and in the melting step, the Co content in the slag that is obtained by heating and melting the starting material is set to 1% by mass or less.
H01M 10/54 - Reclaiming serviceable parts of waste accumulators
C22B 5/10 - Dry processes by solid carbonaceous reducing agents
C22B 7/00 - Working-up raw materials other than ores, e.g. scrap, to produce non-ferrous metals or compounds thereof
C22B 23/02 - Obtaining nickel or cobalt by dry processes
12.
STARTING MATERIAL FOR DRY SMELTING, METHOD FOR PRODUCING STARTING MATERIAL FOR DRY SMELTING, METHOD FOR PRODUCING VALUABLE METAL USING SAID STARTING MATERIAL FOR DRY SMELTING, AND METHOD FOR PRODUCING NICKEL SULFATE AND/OR COBALT SULFATE
222 with a silicate mineral containing Mg, Ca, etc. can be performed at a high treatment efficiency with easy process management. This method for fixing carbon dioxide comprises: an amorphization treatment St1 in which mechanical stress is applied to alkaline-earth-metal-containing ore for mechanochemical treatment, and an alkaline-earth-metal-containing mineral contained in an alkaline-earth metal is amorphized; and a carbon dioxide fixation treatment St2 in which magnesium eluted into a solution by putting the alkaline-earth-metal-containing ore that has undergone the amorphization treatment St1 into the solution is reacted with carbon dioxide, thereby fixing the carbon dioxide as a carbonic acid salt of the alkaline-earth metal.
The present invention provides a hydrometallurgical method for a nickel oxide ore, with which it is possible to effectively utilize an ore that contains magnesium at a high concentration. Provided is a hydrometallurgical method for a nickel oxide ore, the hydrometallurgical method including: a first step S1 in which a leaching step S11, a solid-liquid separation step S12, and a neutralization step S13 are performed; and a second step S2 in which a dissolvability improvement treatment step S21, in which the dissolvability of a magnesium-containing ore that has a magnesium concentration exceeding 5 mass% is improved, and a carbonate production step S22, in which the magnesium-containing ore, which has passed through the dissolvability improvement treatment step S21, is put into a solution and magnesium dissolved in the solution is reacted with carbon dioxide so as to produce magnesium carbonate, are performed. The magnesium carbonate produced in the carbonate production step S22 is used as a neutralizing agent in the neutralization step S13.
NATIONAL UNIVERSITY CORPORATION CHIBA UNIVERSITY (Japan)
Inventor
Yoshimoto, Yuki
Sri Sumantyo, Josaphat Tetuko
Takahashi, Ayaka
Abstract
This microstrip antenna comprises: a first dielectric layer; a first conductor layer that is a ground surface disposed on the lower surface of the first dielectric layer; and a second conductor layer that is a power feeding surface disposed on the upper surface of the first dielectric layer. The second conductor layer includes a plurality of power feeding patches and a transmission line that transmits a signal between the plurality of power feeding patches and a terminal. The entire outer periphery of the transmission line has an arc shape in a connection region connected to the plurality of power feeding patches.
H01Q 21/24 - Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction
H01Q 13/08 - Radiating ends of two-conductor microwave transmission lines, e.g. of coaxial lines, of microstrip lines
16.
LITHIUM-CONTAINING SLAG, AND METHOD FOR PRODUCING VALUABLE METAL
To provide a slag that allows the slag melting point to be effectively controlled to a predetermined temperature or below while keeping down the amount of flux added and that effectively concentrates Li by keeping down the amount of slag in Li-containing slag obtained by melting a raw material such as discarded lithium ion batteries that contains Li and Al. The present invention is an Li-containing slag obtained by melting a raw material containing discarded lithium ion batteries that contain lithium (Li) and aluminum (Al), characterized by having relationships of Al/Li < 5 and silicon (Si)/Li < 0.7 by mass ratio and by containing Al in a proportion of 20 mass% or less, Li in a proportion of 3-20 mass%, and Si in a proportion of 0-7 mass%.
The present invention addresses the problem of providing infrared-absorbing fibers containing composite tungsten oxide particles having excellent infrared absorption performance. Infrared-absorbing fibers according to the present invention each include a fiber and composite tungsten oxide particles disposed at one or more locations selected from the inside and surfaces of the fiber. The composite tungsten oxide particles contain a composite tungsten oxide. The composite tungsten oxide is represented by general formula MxWyOz (0.20≤x/y≤0.37, 2.2≤z/y≤3.3) and has a hexagonal crystal system. In a STEM-HAADF image of the composite tungsten oxide particles obtained through [001] incidence, the proportion of the number of spots included therein at which the Z-contrast of tungsten atoms has reduced to 95% or less of the average is 0.01-10%.
xyzz (0.20 ≤ x/y ≤ 0.37, 2.2 ≤ z/y ≤ 3.3), and the crystal system is a hexagonal crystal. In a molar absorption coefficient curve in a range of 0.5-2.0 eV of a dispersion liquid in which the complex tungsten oxide particles are dispersed in a liquid medium or a dispersion in which the complex tungsten oxide particles are dispersed in a solid medium, the complex tungsten oxide particles have a lower peak value of an absorption curve of polaron absorption than a peak value of an absorption curve of localized surface plasmon absorption in a direction parallel to the c-axis of a complex tungsten oxide crystal contained in the complex tungsten oxide particle.
[Problem] To provide a solid electrolyte for a calcium ion secondary battery, the solid electrolyte being capable of exhibiting performance for stabilizing a negative electrode even when charging and discharging are repeated, while maintaining high energy capacity in a calcium ion secondary battery. [Solution] This solid electrolyte for a calcium ion secondary battery includes a calcium salt, a polymer compound, and a polymer solvent, wherein the calcium salt is a calcium complex hydride salt and/or a calcium closo-complex hydride salt, the polymer compound is an ether-based polymer, and the polymer solvent is at least one selected from the group consisting of tetrahydrofuran (THF) 1,2-dimethoxyethane (glyme, G1), diglyme (G2), triglyme (G3), and methyltetrahydrofuran (Me-THF).
33 from a "Cr- and Mg-containing ore", the present invention achieves sufficient elution of Mg into a solution through heat treatment while preventing the elution of toxic Cr(VI) into the solution. Provided is a method for producing magnesium carbonate comprising a heat treatment St1 in which ore that contains chromium and magnesium and has a magnesium concentration of at least 5 mass% is heated, and a carbonate generation treatment St2 in which carbon dioxide is reacted with magnesium that has eluted into an aqueous solution as a result of introducing the ore that has been subjected to the heat treatment St1 into the solution, wherein the heat treatment St1 is carried out in an inert gas atmosphere or a reducing atmosphere at a heating temperature of 500°C to 800°C.
To provide a method for producing granulated body for lithium adsorption that easily maintain their shapes with a high adsorption capability and more robust granulated body. The method for producing the granulated body for lithium adsorption includes a kneading step of kneading a powder of a lithium adsorbent precursor, an organic binder, and a hardening agent for accelerating hardening of the organic binder to obtain a kneaded material, a granulating step of granulating the kneaded material to obtain granulated body, and a baking step of baking the granulated body at 90° C. or more and 120° C. or less to obtain granulated body for lithium adsorption. This aspect allows obtaining the granulated body for lithium adsorption that easily maintain their shapes with a high adsorption capability and more robust granulated body.
B01J 20/30 - Processes for preparing, regenerating or reactivating
B01J 20/06 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material comprising oxides or hydroxides of metals not provided for in group
Provided is a near-infrared curable ink composition including: a thermosetting resin or a thermoplastic resin; and near-infrared absorbing particles. The near-infrared absorbing particles contain a cesium tungsten oxide having an orthorhombic or hexagonal crystal structure and represented by a general formula: CsxW1-yO3-z (where 0.2≤x≤0.4, 0
C09D 11/101 - Inks specially adapted for printing processes involving curing by wave energy or particle radiation, e.g. with UV-curing following the printing
B05D 3/06 - Pretreatment of surfaces to which liquids or other fluent materials are to be appliedAfter-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to radiation
Provided is a thermally conductive composition in which an increase in viscosity can be suppressed even if the content of an inorganic powdered filler is increased. This thermally conductive composition contains a base oil and an inorganic powdered filler, wherein the composition further containing a titanate-based coupling agent and/or an aluminate-based coupling agent.
To provide, in relation to a method for recovering scandium through ion exchange treatment using a chelate resin from an acidic solution containing scandium and chromium, a method for efficiently removing chromium remaining in the chelate resin and productively and efficiently recovering scandium. The present invention is a method for recovering scandium from an acidic solution containing scandium and chromium, the method comprising an ion exchange treatment step including a step for causing scandium in an acidic solution to be adsorbed on a chelate resin, a step for eluting scandium from the chelate resin, and a step for bringing a sulfuric acid solution into contact with the chelate resin and removing chromium adsorbed on the chelate resin, scandium being recovered from the obtained scandium eluate. In the ion exchange treatment step, a sulfuric acid solution having a temperature of 32°C or higher is brought into contact with the chelate resin in the chromium removal step to remove chromium, and the chelate resin after chromium has been removed is used repeatedly.
C22B 3/24 - Treatment or purification of solutions, e.g. obtained by leaching by physical processes, e.g. by filtration, by magnetic means by adsorption on solid substances, e.g. by extraction with solid resins
C22B 3/42 - Treatment or purification of solutions, e.g. obtained by leaching by ion-exchange extraction
27.
GLASS FILM WITH NEAR-INFRARED BLOCKING FILM, NEAR-INFRARED BLOCKING FILM LAMINATE, METHOD FOR MANUFACTURING GLASS FILM WITH NEAR-INFRARED BLOCKING FILM, AND METHOD FOR MANUFACTURING NEAR-INFRARED BLOCKING FILM LAMINATE
[Problem] To provide: a method by which it is possible to efficiently manufacture a composite tungsten oxide film (electrically insulating heat ray blocking film); and a glass film with a near infrared blocking film obtained by the method. [Solution] Glass films 101A, 102A with near-infrared blocking films are characterized by being configured from: glass films 101, 102 having a thickness of 200 μm or less; and near-infrared blocking films 103, 104 formed on one surface of the glass films and comprising a composite tungsten oxide having a hexagonal crystal structure represented by the general formula MxWyOz. The glass films 101A, 102A are also characterized in that: the maximum value of transmittance of the near-infrared blocking film, in a visible light region of a wavelength from 380 nm to 780 nm, is 5% or more; and the reflectance of the near-infrared blocking film at a wavelength of 1400 nm is 30% or more. Further, a near-infrared blocking film laminate 100A formed by joining the glass film with the near-infrared blocking film to a plate glass 100, or the like, can be used for a window of an automobile or a building for which heat ray blocking properties and radio wave transmissivity are required.
Provided is a method by which it is possible to safely and efficiently collect valuable metals from raw material including waste lithium-ion batteries or the like. The present invention is a method for producing valuable metals from raw material containing valuable metals including Cu, Ni and Co. The method includes at least: a preparation step for preparing raw material containing Li, Al, and valuable metals; a reduction melting step for subjecting the raw material to reduction melting treatment using a melting furnace provided with a cooling means for cooling the furnace walls from the outside to obtain a reduced product comprising a valuable metals-containing alloy and slag; and a slag separation step for separating the slag from the reduced product to collect the alloy. One or both of the preparation step and the reduction melting step include adding Ca-containing flux to the raw material. In the reduction melting step, while the furnace walls of the melting furnace are cooled with the cooling means, a solid slag layer having a Ca/Al value smaller than the Ca/Al value of the slag or a solid slag layer containing 15 mass% or more Al and 3 mass% or more Li is formed on the inside surface of the melting furnace.
A purpose of the present invention is to provide a positive-electrode active material having a high discharge capacity in all-solid-state lithium ion secondary batteries. The positive-electrode active material for all-solid-state lithium ion secondary batteries comprises a lithium transition metal composite oxide composed of secondary particles each comprising a plurality of aggregated primary particles and a coating layer that covers the surfaces of the secondary particles, wherein the lithium transition metal composite oxide includes lithium and nickel and optionally contains cobalt and element M (element M being an additive element other than lithium, nickel, cobalt, and oxygen) and the coating layer includes a compound at least containing lithium and tungsten. The surfaces of the secondary particles have a degree of coverage with tungsten, P (%), determined through XPS analysis and a calculation with (equation 1), of 30-95%. (Equation 1): P=(W/(W+Ni+Co+M))×100 (%)
H01M 4/525 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
Provided is a positive electrode active material for a lithium-ion secondary battery, the positive electrode active material containing a lithium nickel composite oxide having a hexagonal crystal layered structure, wherein the lithium nickel composite oxide contains lithium, nickel, and an element M at a substance amount ratio of Li : Ni : M = a : b : c (when 0.90 ≤ a < 1.00, 0.80 ≤ b < 1.00, 0.00 < c ≤ 0.20, b + c = 1, and the element M is at least one element selected from the group consisting of Mn, Co, Al, Ti, Zr, W, Fe, Si, Nb, Mg, Ca, B, Na, K, Mo, Cu, V, P, and Ba), and the occupancy percentage of nickel present at a lithium seat and obtained from a powder neutron diffraction pattern is 2.5-10.0%.
H01M 4/525 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
H01M 4/505 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy
31.
POSITIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM ION SECONDARY BATTERIES, METHOD FOR PRODUCING POSITIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM ION SECONDARY BATTERIES, AND LITHIUM ION SECONDARY BATTERY
NATIONAL UNIVERSITY CORPORATION YOKOHAMA NATIONAL UNIVERSITY (Japan)
Inventor
Aida, Taira
Hayashi, Kazuhide
Yabuuchi, Naoaki
Abstract
A positive electrode active material for lithium ion secondary batteries contains secondary particles in which a plurality of primary particles are aggregated with each other. The positive electrode active material for lithium ion secondary batteries includes: a lithium transition metal composite oxide having a layered rock salt type structure; and crystallized lithium phosphate. In crystal structure analysis by neutron diffraction of the lithium transition metal composite oxide having the layered rock salt type structure, the ratio of elements other than lithium included in the lithium site (3b site) is 3%-8%.
H01M 4/525 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
H01M 4/36 - Selection of substances as active materials, active masses, active liquids
H01M 4/505 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy
32.
POSITIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM ION SECONDARY BATTERIES, METHOD FOR PRODUCING POSITIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM ION SECONDARY BATTERIES, AND LITHIUM ION SECONDARY BATTERY
H01M 4/525 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
06 - Common metals and ores; objects made of metal
09 - Scientific and electric apparatus and instruments
17 - Rubber and plastic; packing and insulating materials
Goods & Services
Films and sheets made from metal for use in the manufacture
of circuit boards; resin-coated copper sheets; resin-coated
copper foils; resin-coated copper foils based copper-clad
laminate for use in the manufacture of electronic circuits. Flexible circuit boards; printed circuit boards. Copper-clad laminate using resin film for use in the
manufacture of electronic circuits; metal-coated resin
films; resin films based copper-clad laminate for use in the
manufacture of electronic circuits; metalized resin films;
metalized plastic sheets; plastic semi-worked products;
plastic substances, semi-processed; artificial resins,
semi-processed; synthetic resins, semi-processed.
The present invention is a treatment method for an alloy, the method being used for the purpose of obtaining a solution that contains nickel and/or cobalt from an alloy that contains nickel and/or cobalt and copper. This treatment method for an alloy comprises a leaching step in which the alloy is subjected to a leaching treatment by adding an acid solution to the alloy in the coexistence of a sulfurizing agent, thereby obtaining a leachate and a leaching residue; and in the leaching step, the leaching treatment is carried out while maintaining the copper concentration in the reaction solution within the range of 0.5 g/L to 15 g/L by adding a divalent copper ion source thereto. Moreover, in the leaching step, the leaching treatment is carried out while maintaining the redox potential of the reaction solution at 50 mV or more, using a silver/silver chloride electrode as a reference electrode.
Disclosed is a positive electrode active material for lithium ion secondary batteries, the positive electrode active material containing a lithium nickel composite oxide that has a hexagonal layered structure. The lithium nickel composite oxide contains Li, Ni, and element M at an amount-of-substance ratio Li:Ni:M = a:b:c (wherein 0.90 ≤ a < 1.00, 0.80 ≤ b < 1.00, 0.00 < c ≤ 0.20, b + c = 1, and the element M is at least one element that is selected from the group consisting of Mn, Co, Al, Ti, Zr, W, Fe, Si, Nb, Mg, Ca, B, Na, K, Mo, Cu, V, P, and Ba). The nickel occupancy rate in the lithium site is 2.5% to 10.0% inclusive as obtained from the powder neutron diffraction pattern, and the half-value width of the diffraction peak of the (003) plane in the powder X-ray diffraction pattern is not less than 0.054° but less than 0.074°.
H01M 4/525 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
H01M 4/505 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy
22 generated is reduced and the nickel recovery rate is high. The present invention is a method for smelting a nickel-containing oxide ore, the method comprising: a step for using a tubular reaction vessel, introducing a raw material that contains a nickel-containing oxide ore so as to move from above to below within the reaction vessel, and supplying a hydrogen-containing gas as a reducing agent to the raw material from below and from the side to perform a reduction treatment; a step for performing a melting treatment on the reduction product obtained using the reduction treatment; and a step for separating the slag from the melt obtained using the melting treatment and recovering a nickel-containing metal. The gas supplied from below to the raw material is supplied at room temperature. The gas supplied from the side to the raw material is at a temperature of 300°C or higher and is supplied from the side at a position above the position where the raw material for which the reduction treatment has been completed is stored.
COATED POSITIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERIES, METHOD FOR PRODUCING COATED POSITIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERIES, AND LITHIUM SECONDARY BATTERY
Disclosed is a coated positive electrode active material for lithium secondary batteries, the coated positive electrode active material being used for sulfide-based all-solid-state secondary batteries, and including a positive electrode active material that contains nickel, manganese, and cobalt, and a coating film that is disposed on the surface of the positive electrode active material and contains a fluoride and a phosphorus-containing compound.
H01M 4/525 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
H01M 4/36 - Selection of substances as active materials, active masses, active liquids
H01M 4/505 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy
H01M 4/525 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
H01M 4/505 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy
Provided is a production method by which high-purity lithium carbonate can be obtained at low cost without using a large amount of chemicals. The present invention involves sequentially executing a lithium adsorption step (1), a lithium elution step (2), an impurity removal step (3), and a conversion step (4), wherein, in the impurity removal step (3), an oxidizing agent is added to a second lithium-containing solution to oxidize manganese in the second lithium-containing solution into a form of insoluble manganese dioxide, an alkali is added to the second lithium-containing solution after an oxidation step (3A) is executed to precipitate and remove, as hydroxides, mainly magnesium in the second lithium-containing solution and manganese remaining after the oxidation step, thereby obtaining a neutralized solution with reduced magnesium and manganese, and the neutralized solution is brought into contact with an ion exchange resin to remove mainly calcium and aluminum and to remove the remaining magnesium and manganese, thereby obtaining a high-purity lithium carbonate-containing solution.
C22B 3/24 - Treatment or purification of solutions, e.g. obtained by leaching by physical processes, e.g. by filtration, by magnetic means by adsorption on solid substances, e.g. by extraction with solid resins
C22B 3/44 - Treatment or purification of solutions, e.g. obtained by leaching by chemical processes
H01M 4/525 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
H01M 4/36 - Selection of substances as active materials, active masses, active liquids
H01M 4/505 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy
41.
CONDUCTIVE PASTE, ELECTRONIC COMPONENT, AND MULTILAYER CERAMIC CAPACITOR
Provided is a conductive paste capable of reducing a thermal shrinkage difference during firing. This conductive paste includes a conductive powder, a ceramic powder, an additive, a binder resin, and an organic solvent. The conductive paste contains, as the additive, a phosphoric acid-based additive having a structure represented by structural formula (1) in an amount of 0.03-1.5 mass% with respect to the total amount of the conductive paste. The organic solvent includes a terpene-based solvent (a) and at least one (b) selected from a hydrocarbon-based solvent, an acetate-based solvent, an ether-based solvent, and a ketone-based solvent. The binder resin includes at least one of a cellulose-based resin and an acetal-based resin. (In the formula, R1includes at least one of an alkyl group having 6 or more carbon atoms, an ether group having 6 or more carbon atoms, a polyether group, and a polyester group; and each of R2and R3 independently represents hydrogen or an ammonium base, or includes at least one of an alkyl group, an ester group, and an ether group.)
A positive electrode active material includes a lithium-nickel composite oxide particle and a coating layer. The particle has a crystal structure belonging to a space group R-3m, contains at least Li, Ni, an element M, and Nb, wherein Li:Ni:M:Nb=a:(1-x-y):x:y (0.98≤a≤1.15, 0
H01M 4/525 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
H01B 1/08 - Conductors or conductive bodies characterised by the conductive materialsSelection of materials as conductors mainly consisting of other non-metallic substances oxides
43.
CONDUCTIVE PASTE, ELECTRONIC COMPONENT, AND MULTILAYER CERAMIC CAPACITOR
Provided is a conductive paste having high viscosity and a reduced number of coarse particles. The conductive paste comprises inorganic particles, a binder resin, a dispersant, and an organic solvent. The inorganic particles contain a conductive powder having a number average particle size of 0.05-0.3 μm in an amount of 30-70 mass% on the basis of the total amount of the conductive paste. The binder resin includes a cellulose-based resin. The dispersant includes an acid-based dispersant. The conductive paste has a viscosity of greater than 10 Pa·s at a shear rate of 4 s-1. In the conductive paste, the numeral proportion of conductive powder having a particle size exceeding twice the number average particle size of the conductive powder is 50 ppm or less on the basis of the total number of the conductive powder.
[Problem] To provide a method which enables the production of a hydroxide that contains nickel (Ni) and cobalt (Co), the hydroxide being usable as a precursor of a positive electrode active material, even if the starting material contains various impurities. [Solution] This method for producing a hydroxide containing Ni and Co comprises: a step for washing an NiCo mixed hydroxide with water; a first alkali cleaning step for cleaning the water-washed NiCo mixed hydroxide using a basic aqueous solution that has a predetermined concentration and liquid temperature for a predetermined cleaning time; a step for leaching the cleaned NiCo mixed hydroxide at a predetermined temperature using an aqueous ammonia solution that has a predetermined ammonium carbonate and/or ammonium hydrogen carbonate concentration; a thermal decomposition precipitation step for heating the thus-obtained leachate containing Ni and Co at a predetermined temperature so as to precipitate the Ni and Co in the form of a hydroxide; and a second alkali cleaning step for cleaning the precipitated hydroxide using a basic aqueous solution that has a predetermined concentration and liquid temperature for a predetermined cleaning time.
C22B 3/14 - Extraction of metal compounds from ores or concentrates by wet processes by leaching in inorganic alkaline solutions containing ammonia or ammonium salts
C22B 3/44 - Treatment or purification of solutions, e.g. obtained by leaching by chemical processes
[Problem] To provide a method for producing a leachate that contains nickel ions and cobalt ions using a starting material that includes nickel and cobalt that is less expensive than a nickel metal powder. [Solution] According to the present invention, a slurry obtained by mixing hydroxide particles that contain nickel and cobalt and ammonia water that contains ammonium carbonate or ammonium bicarbonate and has preferably been prepared such that the ammonium carbonate or ammonium bicarbonate concentration is 0.50–4.1 mol/L is subjected to a leaching treatment under prescribed temperature conditions to produce a leachate that contains nickel ions and cobalt ions that have been leached from the hydroxide particles.
C22B 3/14 - Extraction of metal compounds from ores or concentrates by wet processes by leaching in inorganic alkaline solutions containing ammonia or ammonium salts
C22B 3/44 - Treatment or purification of solutions, e.g. obtained by leaching by chemical processes
H01M 10/54 - Reclaiming serviceable parts of waste accumulators
46.
METHOD FOR PRODUCING LEACH SOLUTION FROM HYDROXIDE INCLUDING NICKEL AND COBALT
[Problem] To provide a method for producing a leach solution that includes nickel ions and cobalt ions, using a raw material that includes nickel and cobalt and is less expensive than metallic nickel powder. [Solution] A leach solution including nickel ions and cobalt ions leached from hydroxide particles is obtained by subjecting a slurry to a leaching process under prescribed temperature conditions, said slurry having been obtained by mixing the hydroxide particles, which include nickel and cobalt, and aqueous ammonia that includes ammonium sulfate and has preferably been adjusted such that the ammonium sulfate concentration is within the range 0.5-4.1 mol/L.
C22B 3/14 - Extraction of metal compounds from ores or concentrates by wet processes by leaching in inorganic alkaline solutions containing ammonia or ammonium salts
47.
METHOD FOR PRODUCING LEACHATE FROM MIXED SULFIDE CONTAINING NICKEL AND COBALT
[Problem] The present invention provides a method for producing a leachate which contains nickel ions and cobalt ions with use of a starting material that contains nickel and cobalt, the starting material being more inexpensive than a nickel metal powder. [Solution] According to the present invention, a leachate which contains nickel ions and cobalt ions leached from mixed sulfide particles is obtained by subjecting a slurry, which is obtained by having mixed sulfide particles containing nickel and cobalt mixed with ammonia water that contains ammonium carbonate or ammonium hydrogen carbonate that is prepared to preferably have an ammonium carbonate concentration or ammonium hydrogen carbonate concentration within the range of 0.50 mol/L to 4.1 mol/L, to a leaching treatment under oxidizing conditions preferably by blowing air or an oxygen gas thereinto.
C22B 3/14 - Extraction of metal compounds from ores or concentrates by wet processes by leaching in inorganic alkaline solutions containing ammonia or ammonium salts
[Problem] To provide single-crystal lithium niobate which absorbs little light having wavelengths in the visible light region. [Solution] This single-crystal lithium niobate has a platinum concentration of 1.0 ppm or less.
The present invention pertains to an alloy treatment method for obtaining a solution containing nickel and/or cobalt from alloys containing nickel and/or cobalt and copper, such as waste lithium-ion batteries, the method comprising: a leaching step S1 in which an acid solution is added to the alloys in the presence of a sulfurizing agent to perform a leaching treatment and obtain a leachate and a leaching residue; and a cementation step S2 in which a reducing agent and a sulfurizing agent are added to the resulting leachate to perform a copper-removal treatment for sulfurizing at least copper contained in the leachate and obtain a post-copper removal solution and a copper-removed residue, wherein the copper-removed residue obtained through the copper-removal treatment in the cementation step S2 is repeatedly subjected to the leaching step S1 and subjected to a leaching treatment together with the alloys.
To provide a method for producing lithium hydroxide allowing obtaining high purity lithium hydroxide by reducing impurities to a preliminarily determined level in a step before a conversion step by electrodialysis. The method for producing lithium hydroxide includes steps (1) to (5) below: (1) a hydrocarbonating step of blowing carbon dioxide to a slurry of a mixture of water and rough lithium carbonate; (2) a decarbonation step of heating a lithium hydrogen carbonate solution; (3) an acid solution dissolution step of dissolving a purified lithium carbonate in an acid solution; (4) an impurity removal step of removing a part of metal ions from a first lithium containing solution; and (5) a conversion step of converting lithium salt contained in a second lithium containing solution into lithium hydroxide by electrodialysis. This producing method allows reliably removing metals other than lithium, thereby allowing an increased purity of obtained lithium hydroxide.
Provided are: a substrate for SiC semiconductor devices, the substrate having a structure in which an SiC polycrystalline substrate and an SiC monocrystalline substrate are bonded, and being sufficiently suppressed in the amount of warping of the substrate after back grinding; an SiC bonded substrate; an SiC polycrystalline substrate; and a method for producing an SiC polycrystalline substrate. In this substrate for SiC semiconductor devices, a supporting substrate that is formed of an SiC polycrystal, an SiC monocrystalline substrate that is bonded to the surface of the supporting substrate, an SiC monocrystalline epitaxial layer that is formed on the surface of the SiC monocrystalline substrate, and a constituent of a semiconductor element that is formed on the SiC monocrystalline epitaxial layer are sequentially stacked. A surface of the supporting substrate, the surface not being bonded to the SiC monocrystalline substrate, is a ground surface, and the amount of warping of the ground surface is 0.17 mm/inch or less relative to the diameter of the ground surface.
A method includes preparing a raw material containing Li, Mn, Al, and valuable metals; a reductive melting step of subjecting the raw material to a reductive melting treatment to obtain an alloy containing valuable metals and a slag; and a slag separation step to recover the alloy, wherein in any one or both of the preparation step and the reductive melting step, a flux containing calcium (Ca) is added, a molar ratio (Li/Al ratio) of Li to Al in the slag obtained by the reductive melting treatment is 0.25 or more, a molar ratio (Ca/Al ratio) of Ca to Al in the slag is 0.30 or more, and a Mn amount in the slag is 5.0 mass % or more, and in the reductive melting treatment, an oxygen partial pressure in a melt obtained by melting the raw material is controlled to 10−14 or more and 10−11 or less.
C22B 9/10 - General processes of refining or remelting of metalsApparatus for electroslag or arc remelting of metals with refining or fluxing agentsUse of materials therefor
A method of producing organic-inorganic hybrid infrared absorbing particles includes a dispersion liquid preparing step of preparing a dispersion liquid containing infrared absorbing particles, a dispersant, and a dispersion medium; a dispersion medium removing step of removing the dispersion medium from the dispersion liquid by an evaporation; a raw material mixture liquid preparing step of preparing a raw material mixture liquid containing the infrared absorbing particles collected after the dispersion medium removing step, a coating resin material, an organic solvent, an emulsifying agent, water, and a polymerization initiator; a stirring step of stirring the raw material mixture liquid while cooling; and a polymerizing step of polymerizing the coating resin material after deoxygenation treatment which reduces an amount of oxygen in the raw material mixture liquid.
To provide a method for producing lithium hydroxide allowing increasing a purity of an obtained lithium hydroxide. The method for producing lithium hydroxide includes a lithium adsorption step, a lithium elution step, an impurity removal step, and a conversion step. The impurity removal step includes: (3A) a carbonating step of a step of adding a carbonic acid source to a second lithium containing solution to obtain rough lithium carbonate; (3B) a hydrocarbonating step of a step of blowing carbon dioxide to a slurry containing rough lithium carbonate to obtain a lithium hydrogen carbonate solution; (3C) a decarbonation step of a step of heating the lithium hydrogen carbonate solution to obtain purified lithium carbonate; and (3D) an acid solution dissolution step of a step of dissolving the purified lithium carbonate in an acid solution to obtain a third lithium containing solution. Since this aspect allows reliably removing a metal other than lithium, the purity of the obtained lithium hydroxide is allowed to be increased.
An infrared absorbing fiber including: a fiber; and organic-inorganic hybrid infrared absorbing particles, is provided. The organic-inorganic hybrid infrared absorbing particles include infrared absorbing particles and a coating resin that covers at least a part of a surface of the infrared absorbing particles. The organic-inorganic hybrid infrared absorbing particles are located in one or more parts selected from an interior of the fiber and a surface of the fiber.
A fixation method is provided by which carbon dioxide is fixed to a mineral containing calcium and/or magnesium, without using any expensive chemical. The fixation method comprises: a fixation step (I) in which a film (2) formed by reacting an individual (1) to be treated containing calcium and/or magnesium with carbon dioxide in the presence of water is fixed to the surface of the individual (1) to be treated; and a separation step (II) in which an external force is applied to the individual (1) to be treated having the film (2) fixed thereto to separate the film (2) and regenerate an ability to fix carbon dioxide. By thus forming the film (2) of a carbonate on the surface of the individual (1) to be treated and then separating the film (2) therefrom, it is possible to fix carbon dioxide without adding any expensive chemical. The method hence can have an extremely high industrial value.
B01D 53/14 - Separation of gases or vapoursRecovering vapours of volatile solvents from gasesChemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by absorption
Provided is a method for producing a lithium-containing solution capable of suppressing production costs for lithium production by reducing the solution amount after an adsorption step, increasing the lithium content in the lithium-containing solution, and reducing the amount of a solution to be used in a step after a manganese oxidation step. The method for producing a lithium-containing solution executes an adsorption step, an elution step, and a manganese oxidation step in the stated order. In the adsorption step, an anion exchange resin is used together with a lithium adsorbent. With this aspect, the anion exchange resin adsorbs hydrogen ions generated in the adsorption step, and thus adsorption reaction can be promoted. Thus, the solution amount after the adsorption step can be reduced, the lithium content in the lithium-containing solution is increased, and the amount of a solution to be used in a step after the manganese oxidation step is reduced. Consequently, production costs for lithium production can be suppressed.
B01J 20/06 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material comprising oxides or hydroxides of metals not provided for in group
B01J 41/00 - Anion exchangeUse of material as anion exchangersTreatment of material for improving the anion exchange properties
B01J 49/00 - Regeneration or reactivation of ion-exchangersApparatus therefor
C02F 1/28 - Treatment of water, waste water, or sewage by sorption
C22B 3/20 - Treatment or purification of solutions, e.g. obtained by leaching
C22B 3/24 - Treatment or purification of solutions, e.g. obtained by leaching by physical processes, e.g. by filtration, by magnetic means by adsorption on solid substances, e.g. by extraction with solid resins
C22B 3/44 - Treatment or purification of solutions, e.g. obtained by leaching by chemical processes
Provided is a thick film resistor comprising ruthenium oxide and glass. The ruthenium oxide has a rutile-type crystal structure. When the lattice constant of the a-axis measured by an X-ray diffraction method is La and the lattice constant of the c-axis is Lc, Lc/La is greater than or equal to 0.6885, and the crystallite diameter is 10-80 nm.
H01C 7/00 - Non-adjustable resistors formed as one or more layers or coatingsNon-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
H01C 17/065 - Apparatus or processes specially adapted for manufacturing resistors adapted for coating resistive material on a base by thick-film techniques, e.g. serigraphy
60.
DISPERSED POWDER AND METHOD FOR PRODUCING SAME, HEAT RAY-BLOCKING RESIN MOLDED BODY, AND HEAT RAY-BLOCKING LAMINATE
Provided are: a dispersed powder that is represented by general formula MxWOy, that has a hexagonal crystal structure, that has a crystallite diameter of 15-80 nm, and that contains composite tungsten oxide fine particles surface-modified with an acrylic dispersant, wherein the weight ratio of the dispersant to the composite tungsten oxide fine particles is in the range of 0.3 ≤ (the weight of the dispersant/the weight of the composite tungsten oxide fine particles) < 3.0; a heat ray-blocking resin molded body manufactured using the dispersed powder; and a heat ray-blocking laminate.
B32B 27/20 - Layered products essentially comprising synthetic resin characterised by the use of special additives using fillers, pigments, thixotroping agents
C08J 3/20 - Compounding polymers with additives, e.g. colouring
C08K 3/105 - Compounds containing metals of Groups 1 to 3 or of Groups 11 to 13 of the Periodic Table
C08L 33/00 - Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereofCompositions of derivatives of such polymers
C08L 69/00 - Compositions of polycarbonatesCompositions of derivatives of polycarbonates
C08L 101/00 - Compositions of unspecified macromolecular compounds
C09C 1/00 - Treatment of specific inorganic materials other than fibrous fillers Preparation of carbon black
C09C 3/00 - Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION (Japan)
SUMITOMO METAL MINING CO., LTD. (Japan)
Inventor
Hirajima, Tsuyoshi
Miki, Hajime
Suyantara, Gde Pandhe Wisnu
Sasaki, Keiko
Tanaka, Yoshiyuki
Takida, Eri
Abstract
Provided is a mineral processing method that allows obtaining a concentrate having a low arsenic grade from a raw material having a high arsenic grade. The mineral processing method includes: a repulping step of adding water to a raw material containing a non-arsenic-containing sulfide mineral as a sulfide mineral not containing arsenic and an arsenic-containing sulfide mineral as a copper sulfide mineral containing arsenic to obtain a mineral slurry; a pH adjusting step of adjusting a pH of a liquid phase of the mineral slurry to 10 or more; a conditioning step of adding an oxidant and xanthate alkali metal salt to the mineral slurry; and a flotation step of performing flotation using the mineral slurry to separate the raw material into a floating ore having a grade of the non-arsenic-containing sulfide mineral higher than a grade of the non-arsenic-containing sulfide mineral of the raw material and a precipitating ore having a grade of the arsenic-containing sulfide mineral higher than a grade of the arsenic-containing sulfide mineral of the raw material. The raw material contains the arsenic by 4.4 to 5.8 pts. wt. per 100 pts. wt. of copper.
A method for producing a lithium-containing solution is provided in which a solution resulting from an elution step is made to have an increased lithium content and the amount of the solution in a step succeeding the elution step is reduced, thereby reducing the cost of lithium production. The method for producing a lithium-containing solution includes, in the following order, an adsorption step, an elution step in which lithium manganate resulting from the adsorption is brought into contact with an acid-containing solution to obtain an eluate, and a manganese oxidation step. The elution step comprises a first elution step, in which the acid-containing solution has a high H+concentration, and a second elution step, in which the acid-containing solution has a lower H+ concentration than in the first elution step. The second elution step is performed after the first elution step. Due to the configuration, elution is efficiently performed in the first elution step and, in the second elution step, there is no need of heightening the hydrogen ion concentration of the acid-containing solution and the amount of an acid to be added to the acid-containing solution can hence be reduced. Thus, the amount of the eluate to be used in the manganese oxidation step can be reduced.
B01J 20/06 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material comprising oxides or hydroxides of metals not provided for in group
C02F 1/28 - Treatment of water, waste water, or sewage by sorption
C22B 3/24 - Treatment or purification of solutions, e.g. obtained by leaching by physical processes, e.g. by filtration, by magnetic means by adsorption on solid substances, e.g. by extraction with solid resins
C22B 3/44 - Treatment or purification of solutions, e.g. obtained by leaching by chemical processes
63.
COATING-LAYER-PROVIDED POSITIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM ION SECONDARY BATTERIES, COATING-LAYER FORMING SOLUTION, METHOD FOR PRODUCING COATING-LAYER-PROVIDED POSITIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM ION SECONDARY BATTERIES, AND ALL-SOLID-STATE LITHIUM ION SECONDARY BATTERY
This coating-layer-provided positive electrode active material for lithium ion secondary batteries includes a lithium metal composite oxide and a coating layer that covers at least a portion of the surface of the lithium metal composite oxide and that has a coating rate of 60% or more. The lithium metal composite oxide has a layered rock salt structure and contains lithium (Li), nickel (Ni), and an M element (M) at a ratio of the amount of substances of Li:Ni:M=a:1-x:x, the a and the x satisfy the relationships 0.98≤a≤1.20 and 0≤x≤1.0, and the M element is one or more elements other than lithium, nickel, and oxygen. The coating layer contains lithium, phosphorus, and a Z element, and the Z element is at least one pentavalent transition metal element.
H01M 4/525 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
H01M 4/36 - Selection of substances as active materials, active masses, active liquids
H01M 4/131 - Electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx
H01M 4/505 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy
The purpose of the present invention is to avoid the progress of corrosion in a sulfuric acid storage tank for storing concentrated sulfuric acid, the corrosion being caused by scattering of sulfuric acid fed into the tank on the liquid surface in the tank. A sulfuric acid storage tank 100 comprising a tank body 1 for storing sulfuric acid, and a feed pipe 2 for feeding sulfuric acid into the tank body 1, the sulfuric acid storage tank 100 being configured so that: the feed pipe 2 has an jetting port 24 through which sulfuric acid is jetted above the gas-liquid interface inside the tank body 1; in the jetting port 24, the jetting direction of the sulfuric acid is directed toward a side plate 11 of the tank body 1; and a corrosion-resistant protective plate 3 is disposed at a position between the side plate 11 and the jetting port 24 inside the tank body 1.
The present invention provides a method for smelting an oxide ore, with which it is possible to enhance the quality of a metal obtained thereby and to efficiently produce a high-quality metal. The present invention specifically provides a method for smelting a nickel oxide ore, the method comprising: a mixing step in which a nickel oxide ore and a first reducing agent are mixed so as to obtain a mixture; and a reduction step in which the mixture is charged into a reduction furnace and a second reducing agent is put into the reduction furnace so as to reduce the mixture.
Infrared absorbing particles each containing a composite oxide, wherein the composite oxide contains an A1 element comprising at least one element selected from H and an alkali metal, an A2 element comprising at least one element selected from Mg and an alkaline earth metal, and a B element comprising at least one element selected from V, Nb and Ta, and the relationships represented by the formulae: 0.002 ≤ (x1+x2)/y ≤ 1.5, 0.001 ≤ x1/y ≤ 1 and 0.001 ≤ x2/y ≤ 1 are satisfied when the physical amounts of the A1 element, the A2 element and the B element contained in the composite oxide are x1, x2 and y, respectively.
Provided is a degassing tank that has a structure capable of reducing the risk of boring due to erosion occurring in the piping of a hydrogen sulfide gas flow. The present invention is a hydrogen sulfide gas vacuum degassing tank installed in a sulfurization stage of a hydrometallurgical process for nickel oxide ore, wherein the vacuum degassing tank is characterized by being a device that performs gas-liquid separation by degassing treatment of a sulfide slurry generated in the sulfurization stage, obtains gas-phase hydrogen sulfide gas and a solid-liquid component slurry, and recovers the hydrogen sulfide gas. The hydrogen sulfide gas vacuum degassing tank is also characterized in that a conical baffle with the apex thereof arranged at the top and a doughnut-shaped baffle are arranged above a sulfide slurry inflow section in the tank of the vacuum degassing tank, and the arrangement includes at least one set of a combination comprising the conical baffle in the upper portion and at least one doughnut-shaped baffle in the lower portion.
Provided is a method by which it is possible to collect valuable metals from raw material including waste lithium-ion batteries or the like. The present invention is a method which includes: a step for preparing raw material including at least Li, Al, and the valuable metals; a step for obtaining a reduction that includes slag and an alloy containing the valuable metals by subjecting the raw material to a reduction melting treatment; and a slag separation step for collecting the alloy by separating out the slag from the reduction, wherein, in a step for adding a flux containing calcium (Ca) to the raw material and performing reduction and melting thereof, the reduction melting treatment is performed such that the liquidus line temperature of ternary Al2O3—Li2O—CaO slag in a phase diagram is greater than the liquidus line temperature of a ternary Cu—Ni—Co alloy in a phase diagram.
C22B 9/10 - General processes of refining or remelting of metalsApparatus for electroslag or arc remelting of metals with refining or fluxing agentsUse of materials therefor
The present invention provides a method that is capable of selectively obtaining nickel and/or cobalt from an alloy, which contains copper. A method comprises: a leaching step S1 in which an alloy that contains copper as well as nickel and/or cobalt is subjected to a leaching treatment by means of an acid solution in the coexistence of a sulfurizing agent, thereby obtaining a leachate and a leaching residue; and a reduction step S2 in which a reducing agent is added to the thus-obtained leachate so as to reduce the leachate, thereby obtaining a post-reduction solution and a reduction residue. This method is characterized in that the reduction is carried out in the reduction step S2, while controlling the addition amount of the reducing agent so that the redox potential of the leachate is 0 mV or less as determined where a silver/silver chloride electrode is the reference electrode.
xyzz (the M element is at least one element selected from alkali metal elements, alkali earth metal elements, rare-earth elements, Mg, Zr, Cr, Mn, Fe, Ru, Co, Rh, Ir, Ni, Pd, Pt, Cu, Ag, Au, Zn, Cd, Al, Ga, In, Tl, Si, Ge, Sn, Pb, Sb, B, F, P, S, Se, Br, Te, Ti, Nb, V, Mo, Ta, Re, Be, Hf, Os, Bi, and I; 0.20 ≤ x/y ≤ 0.37; 2.2 ≤ z/y ≤ 3.3), the crystalline system of the particles is hexagonal, and, in the observation of a STEM-HAADF image from [001] incidence, spots where the Z contrast of W atoms has been reduced to an average value of 95% or less are included at 0.01% to 10%.
National University Corporation Chiba University (Japan)
Inventor
Naito, Motoyuki
Sri Sumantyo, Josaphat Tetuko
Takahashi, Ayaka
Abstract
A method for measuring a state of a substance, includes an irradiating process that irradiates an electromagnetic wave with respect to the substance inside a closed space, a receiving process that receives the electromagnetic wave, and a data processing process that performs a data processing on the electromagnetic wave received by the receiving process, wherein the irradiating process uses a chirped pulse wave as the electromagnetic wave.
G01N 22/00 - Investigating or analysing materials by the use of microwaves or radio waves, i.e. electromagnetic waves with a wavelength of one millimetre or more
72.
MAGNETOSTRICTIVE MEMBER AND PRODUCTION METHOD FOR MAGNETOSTRICTIVE MEMBER
[Problem] To provide a magnetostrictive member that has high parallel magnetostriction and little variation in parallel magnetostriction from member to member and that, when incorporated into a magnetostrictive vibration power generation device, produces high device output and suppresses variation in optimum magnetic field strength as device characteristics. [Solution] A magnetostrictive member according to the present invention is formed from a plurality of identical crystals. The magnetostrictive member is a plate-shaped body that comprises crystals of a magnetostrictive iron alloy and has a long direction and a short direction. At least one of a front surface and a back surface of the plate-shaped body has a plurality of grooves that extend in the long direction. The ratio (standard deviation/average) between the standard deviation of the optimum magnetic field strengths found for a plurality of the magnetostrictive members by electromechanical equivalent circuit analysis and the average of the optimum magnetic field strengths is no more than 0.2.
A method for producing a lithium containing solution includes a neutralization step of obtaining an untreated lithium containing solution by adding alkali to a crude lithium containing solution and an ion-exchange step of obtaining a lithium containing solution in which a predetermined metallic element is reduced compared with an untreated lithium containing solution by using an ion-exchange resin. In the ion-exchange step, the predetermined metallic element is removed by passing the untreated lithium containing solution through a column containing the ion-exchange resin. A portion of the untreated lithium containing solution passing through the column that is a preliminarily determined amount after starting the liquid passing into the column is to be excluded from the lithium containing solution.
[Problem] To obtain a large amount of parallel magnetostriction and less variation in the amount of parallel magnetostriction among members, and to further lower an optimum magnetic field intensity of magnetostriction members and suppress variation of the optimum magnetic field intensity. [Solution] This method for producing a magnetostrictive member involves: forming a plurality of grooves in at least one of a front surface and a back surface of a plate-like body which is composed of an iron-based alloy crystal having magnetostrictive characteristics and which has a long-side direction and a short-side direction, the plurality of grooves extending in the long-side direction; and subjecting the plate-like body on which the plurality of grooves extending in the long-side direction have been formed to a heat treatment.
This flotation ore-dressing system separates and recovers useful minerals included in ore of an ore slurry by carrying out a flotation ore-dressing treatment on said ore slurry, the flotation ore-dressing system comprising: a slurification tank 1 that receives ore containing useful minerals and preparation water for slurifying said ore, to prepare an ore slurry; a flotation ore-dressing facility 5 composed of one or a plurality of continuous flotation ore-dressing tanks 10, to carry out a flotation ore-dressing treatment on said ore slurry extracted from the slurry tank 1; and a microbubble-containing water generation device 6 that generates microbubble-containing water including microbubbles having a diameter of 100 μm or less, said microbubble-containing water being supplied to at least one of the flotation ore-dressing tanks 10.
The present invention provides a method for producing a lithium-containing solution, the method making it possible to suppress the cost of lithium production by increasing the lithium content in a solution after an elution step and suppressing the amount of the solution to be used in a step which follows the elution step. This method for producing a lithium-containing solution sequentially executes an adsorption step, an elution step in which an eluted solution is obtained by bringing lithium manganate after adsorption and an acid-containing solution into contact with each other, and a manganese oxidation step in this order. The eluted solution is separated into a high-concentration lithium eluted solution and a low-concentration lithium eluted solution. The acid-containing solution includes one that is obtained by adding an acid into the low-concentration lithium eluted solution. Since only the low-concentration lithium eluted solution is added into the acid-containing solution in this embodiment, the hydrogen ion concentration in the acid-containing solution can be increased by adding only a small amount of an acid, thereby making it possible to reduce the amount of the acid-containing solution and to reduce the amount of the eluted solution to be used in the manganese oxidation step.
C22B 3/20 - Treatment or purification of solutions, e.g. obtained by leaching
C22B 3/24 - Treatment or purification of solutions, e.g. obtained by leaching by physical processes, e.g. by filtration, by magnetic means by adsorption on solid substances, e.g. by extraction with solid resins
C22B 3/44 - Treatment or purification of solutions, e.g. obtained by leaching by chemical processes
77.
SUBSTRATE FOR SiC SEMICONDUCTOR DEVICES, SiC BONDED SUBSTRATE, SiC POLYCRYSTAL SUBSTRATE, AND SiC POLYCRYSTAL SUBSTRATE MANUFACTURING METHOD
Provided are: a substrate that is for SiC semiconductor devices, has a structure in which an SiC polycrystal substrate and an SiC monocrystal substrate are bonded, and can suppress the warp amount of the substrate to not more than 1.0 mm after having undergone a reverse surface grinding process; an SiC bonded substrate; an SiC polycrystal substrate; and an SiC polycrystal substrate manufacturing method. This substrate for SiC semiconductor devices sequentially has laminated therein a support substrate made of SiC polycrystals, an SiC monocrystal substrate bonded to the surface of the support substrate, an SiC monocrystal epitaxial layer formed on the surface of the SiC monocrystal substrate, and a constituent of a semiconductor element formed on the SiC monocrystal epitaxial layer. The surface of the support substrate not bonded to the SiC monocrystal substrate is a ground surface, and the warp amount of the ground surface is not more than 1.0 mm.
C01D 17/00 - Rubidium, caesium, or francium compounds
79.
METHOD FOR MANUFACTURING POSITIVE-ELECTRODE ACTIVE MATERIAL PRECURSOR AND POSITIVE-ELECTRODE ACTIVE MATERIAL FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY
A method for manufacturing a positive-electrode active material precursor for a nonaqueous electrolyte secondary battery containing a nickel-cobalt-manganese carbonate compound includes: an initial aqueous solution preparation process of preparing an initial aqueous solution; a nucleation process of forming nuclei; and a nucleus growth process of growing the nuclei. In the nucleation process, a pH value of the mixed aqueous solution is controlled to be greater than or equal to 8.0 at the reference reaction temperature of 25° C. In the nucleus growth process, the pH value of the mixed aqueous solution is controlled to be greater than or equal to 6.0 and less than or equal to 7.5 at the reference reaction temperature of 25° C. The nucleation process takes a time greater than or equal to 1/20 and less than or equal to 3/10 of a combined time of the nucleation process and the nucleus growth process.
H01M 4/525 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
H01M 4/02 - Electrodes composed of, or comprising, active material
H01M 4/505 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy
Provided is a method of effectively separating impurities, in particular, iron contained in a raw material to be processed, and recovering valuable metal at a high rate of recovery. Provided is a method of producing valuable metal including cobalt (Co), comprising: a preparation step for preparing a raw material containing at least iron (Fe) and the valuable metal; a fusing step for heating and fusing the raw material into a melt and thereafter making the melt into a fusion containing alloy and slag; and a slag separation step for separating the slag out from the fusion to recover alloy containing the valuable metal. In the preparation step, the mass ratio of Fe/Co in the raw material is controlled to 0.5 or less. In the fusion step, the oxygen partial pressure in the melt generated by heating and fusing the raw material is made to be 10−9.0 atm or less.
Organic-inorganic hybrid infrared absorbing particles including: a resin capsule; and an infrared absorbing particle placed in the resin capsule, wherein a content of the infrared absorbing particle is 15 mass % or more and 55 mass % or less.
NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY POSITIVE ELECTRODE ACTIVE MATERIAL AND METHOD FOR PRODUCING SAME, AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY WHICH USES POSITIVE ELECTRODE ACTIVE MATERIAL
The present invention provides a composite oxide that can achieve a high low-temperature output characteristic, a method for manufacturing the same, and a positive electrode active material in which the generation of soluble lithium is suppressed and a problem of gelation is not caused during the paste preparation. A positive electrode active material for non-aqueous electrolyte secondary batteries, including a lithium-metal composite oxide powder including a secondary particle configured by aggregating primary particles containing lithium, nickel, manganese, and cobalt, or a lithium-metal composite oxide powder including both the primary particles and the secondary particle, wherein the secondary particle has a hollow structure inside as a main inside structure, the slurry pH is 11.5 or less, the soluble lithium content rate is 0.5 [% by mass] or less, the specific surface area is 2.0 to 3.0 [m2/g], and the porosity is 20 to 50 [%].
H01M 4/505 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy
H01M 4/02 - Electrodes composed of, or comprising, active material
H01M 4/36 - Selection of substances as active materials, active masses, active liquids
H01M 4/525 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
H01M 10/0525 - Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodesLithium-ion batteries
84.
METHOD FOR PRODUCING LITHIUM ADSORBENT PRECURSOR AFTER ROASTING, AND METHOD FOR PRODUCING GRANULATED BODY FOR LITHIUM ADSORPTION
Provided is a method for producing a lithium adsorbent precursor after roasting, the precursor comprising a large amount of tetravalent manganese with low solubility in water. The method for producing a lithium adsorbent precursor after roasting includes an oxidative roasting step for subjecting a powdery lithium adsorbent precursor containing manganese to oxidative roasting at a temperature of 300 °C to 600 °C to obtain a powdery lithium adsorbent precursor after roasting. By subjecting the powdery lithium adsorbent precursor containing manganese to oxidative roasting at a predetermined temperature, divalent manganese can be converted into tetravalent manganese. Since tetravalent manganese has low solubility in water, it is possible to suppress the lithium adsorbent from dissolving in water at the time of use of the lithium adsorbent.
B01J 20/30 - Processes for preparing, regenerating or reactivating
B01J 20/06 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material comprising oxides or hydroxides of metals not provided for in group
Provided is a method that is for producing, from a raw material containing an oxide including nickel and cobalt, a valuable metal containing said nickel and cobalt, and that enables the degree of reduction of an alloy obtained through a melting process to be adjusted efficiently and properly. The method comprises: a melting step for obtaining a melted product; and a slag separation step for separating a slag from the melted product and recovering an alloy containing the valuable metal. In the melting step, the degree of reduction in the melting process is determined on the basis of the proportion of the amount of cobalt (cobalt recovery rate) in the produced alloy, with respect to the amount of cobalt in the raw material, and, if the degree of reduction is determined to be excessive, the raw material containing an oxide including nickel and cobalt is added as an oxidizer.
Provided is a producing method of granulated body for lithium adsorption that allows sufficiently suppressing a manganese elution in an eluting step when producing lithium on a commercial basis.
Provided is a producing method of granulated body for lithium adsorption that allows sufficiently suppressing a manganese elution in an eluting step when producing lithium on a commercial basis.
A producing method of granulated body for lithium adsorption includes a kneading step of kneading a powder of a lithium adsorbent precursor and a binder to obtain a kneaded product, a granulating step of granulating the kneaded product to obtain a 1st granulated body, and a sintering step of sintering the 1st granulated body to obtain a 2nd granulated body. The configuration allows a manganese valence contained in the lithium adsorbent precursor to change from 2 to 4, and thus allowing the suppressed manganese elution in the eluting step. Further, in production on a commercial basis, the lithium adsorbent can be used repeatedly. In addition, a manganese concentration in an eluent obtained in the eluting step can be suppressed, thus allowing loads in steps after the eluting step to be reduced.
Provided is a method for recovering a valuable metal from a material including waste lithium ion batteries or the like. The method comprises: a preparation step for preparing a material including at least Li, Al, and a valuable metal; a reduction and melting step for carrying out a reduction and melting process on the material to obtain a reduced product including a slag and an alloy containing a valuable metal; and a slag separation step for separating the slag from the reduced product to recover the alloy. In the preparation step and/or the reduction and melting step, a flux containing Ca is added. In the reduction and melting step, the reduction and melting process is performed such that the mass ratio of aluminum oxide/(aluminum oxide+calcium oxide+lithium oxide), in the generated slag, is set to 0.5-0.65, and the slag heating temperature is set to 1400-1600° ° C.
H01M 10/54 - Reclaiming serviceable parts of waste accumulators
88.
NONAQUEOUS ELECTROLYTE SECONDARY BATTERY POSITIVE ELECTRODE ACTIVE MATERIAL AND METHOD FOR PRODUCING SAME, AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY WHICH USES POSITIVE ELECTRODE ACTIVE MATERIAL
The present invention provides a composite oxide that can achieve a high low-temperature output characteristic, a method for manufacturing the same, and a positive electrode active material in which the generation of soluble lithium is suppressed and a problem of gelation is not caused during the paste preparation. A positive electrode active material for non-aqueous electrolyte secondary batteries, including a lithium-metal composite oxide powder including a secondary particle configured by aggregating primary particles containing lithium, nickel, manganese, and cobalt, or a lithium-metal composite oxide powder including both the primary particles and the secondary particle, wherein the secondary particle has a hollow structure inside as a main inside structure, the slurry pH is 11.5 or less, the soluble lithium content rate is 0.5 [% by mass] or less, the specific surface area is 2.0 to 3.0 [m2/g], and the porosity is 20 to 50 [%].
H01M 4/505 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy
H01M 4/02 - Electrodes composed of, or comprising, active material
H01M 4/36 - Selection of substances as active materials, active masses, active liquids
H01M 4/525 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
H01M 10/0525 - Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodesLithium-ion batteries
Provided is a method for separating impurities and cobalt without using an electrolysis process from a cobalt chloride solution containing impurities and producing a high purity cobalt sulfate. The production method for cobalt sulfate includes: a copper removal step (S1) of adding a sulfurizing agent to a cobalt chloride solution containing one or more impurities of copper, zinc, manganese, calcium, and magnesium and generating a precipitate of sulfide of copper to separate to remove copper; a neutralization step (S2) of adding a neutralizer or a carbonation agent to a cobalt chloride solution having undergone through the copper removal step (S1) and generating cobalt hydroxide or basic cobalt carbonate to separate magnesium; a leaching step (S3) of adding sulfuric acid to the cobalt hydroxide or the basic cobalt carbonate to obtain cobalt sulfate solution; and a solvent extraction step (S4) of bringing an organic solvent containing an alkyl phosphoric acid-based extractant to the cobalt sulfate solution and extracting zinc, manganese, and calcium into the organic solvent to separate to remove zinc, manganese, and calcium. These steps are sequentially executed.
The magnetostrictive member contains an iron-based alloy crystal having magnetostrictive characteristics and is a plate-like body having front and back faces. In one of the front and back faces, a thickness and a surface roughness Ra of the magnetostrictive member satisfy Expression (1): log Ra≥0.48t−0.62. In Expression (1), log indicates a common logarithm, Ra the surface roughness (μm), and t the thickness of the magnetostrictive member (mm).
The present invention provides: a precursor for obtaining a positive electrode active material for lithium ion secondary batteries, the positive electrode active material having excellent particle strength, while maintaining good battery characteristics; and an intermediate. The present invention provides a precursor of a positive electrode active material for lithium ion secondary batteries, the precursor being composed of a lithium metal composite oxide that is configured from secondary particles, each of which is an aggregate of primary particles, or that is alternatively configured from both the primary particles and the secondary particles. This precursor of a positive electrode active material for lithium ion secondary batteries is characterized in that: the precursor is composed of a metal composite hydroxide that is configured from secondary particles, each of which is an aggregate of primary particles, or that is alternatively configured from both the primary particles and the secondary particles; the secondary particles are each composed of a core part that occupies the inside of the secondary particle, and a shell part that encloses the core part and covers the outer side of the core part; the core part has a porous structure; the shell part has a solid structure; the metal composite hydroxide contains nickel, manganese and cobalt; and the metal composite hydroxide has a pore volume of 0.2 to 0.5 ml/g and an average pore diameter of 11.5 to 15.0 nm.
Provided is a positive electrode active material that is for lithium ion secondary batteries and that maintains good battery characteristics, while having excellent particle strength. This positive electrode active material is for lithium ion secondary batteries, and is formed from a lithium-metal composite oxide composed of secondary particles each configured by aggregating primary particles, or composed of both the primary particles and the secondary particles. The positive electrode active material for lithium ion secondary batteries is characterized in that: the lithium-metal composite oxide contains lithium, nickel, manganese, and cobalt; the lithium-metal composite oxide has a particle strength of 10-50 MPa; and each of the secondary particles is formed of a core part occupying the inside of the particle and a shell part enclosing and covering the outside of the core part, and has the following forms (a)-(c) observed by imaging a cross section of the secondary particle. (a) The core part has a porous structure, and the core part porosity is 20-60%. (b) The shell part has a solid structure, and the shell part porosity is 5% or less. (c) The entire porosity of the secondary particle is 10-50%.
H01M 4/525 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
H01M 4/36 - Selection of substances as active materials, active masses, active liquids
H01M 4/505 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy
H01M 4/1391 - Processes of manufacture of electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx
93.
COMPOSITION FOR BONDED MAGNET, BONDED MAGNET, AND INTEGRALLY MOLDED COMPONENT
Provided is a composition for a bonded magnet, the composition having higher flowability than conventional ones while enabling the bonded magnet to retain durability and adhesion in a thermal impact test. Also provided are: a bonded magnet which is a molded object of such composition for a bonded magnet; and an integrally molded component including the bonded magnet. This composition for a bonded magnet comprises 88.0-91.0 mass% samarium-iron-nitrogen magnet powder having an average particle diameter of 1.7-2.8 μm, 3.0-7.0 mass% polyamide elastomer having a tensile elongation at rupture of 400% or greater and a flexural modulus of 70 MPa or greater, 0.5-2.0 mass% carbon fibers having a fiber diameter of 5-12 μm, 0.3-1.0 mass% carboxylic acid ester, and 1.0-8.0 mass% polyamide 12 resin having, in a molecular-weight distribution examination, a weight-average molecular weight Mw of 4,500-7,500. This composition for a bonded magnet has a flowability of 1.5 cm3/sec or greater when examined using a flow tester under the conditions of a capillary temperature of 250°C, a load of 588 N, an orifice diameter 1 mm, an orifice length of 1 mm, and a preheating time of 300 seconds.
C08L 77/00 - Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chainCompositions of derivatives of such polymers
H01F 1/055 - Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5
H01F 1/059 - Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and Va elements, e.g. Sm2Fe17N2
94.
ELECTRIC FURNACE AND METHOD FOR PRODUCING VALUABLE METAL
The present invention provides an electric furnace including: a furnace body; and a plurality of electrodes that are provided so as to hang down into the interior of the furnace body from a top section thereof. The raw material is heated and melted in the furnace body by energizing the electrodes and a molten material consisting of a slag and a metal is generated. The electric furnace is configured so that the overall heat transfer coefficient of a side wall of the furnace body is lower than the overall heat transfer coefficient of a side wall of the furnace body, the side wall coming into contact with a layer of the metal formed in a bottom layer, the side wall coming into contact with a layer of the slag formed in a top layer, and said layers being formed in the molten material due to gravity separation.
The present invention provides a method for producing a valuable metal from a starting material that contains waste lithium ion batteries, the method being capable of effectively obtaining a metal which has a reduced phosphorus content. The present invention provides a method for producing a valuable metal from a starting material that contains waste lithium ion batteries containing phosphorus, the method comprising: a melting step in which the starting material is melted, thereby obtaining a melt; and a slag separation step in which slag is separated from the melt and an alloy containing a valuable metal is recovered. According to the present invention, an alloy is recovered, while making it sure that the recovery ratio of cobalt from the starting material is from 95.0% to 99.6%, thereby suppressing the phosphorus content in the alloy to 0.1% by mass or less.
Provided is a method for producing valuable metal from raw materials including, for example, waste lithium ion batteries by a pyrometallurgical method, said method making it possible to efficiently separate manganese included in the raw materials from metal into slag without lowering the valuable metal recovery rate. The present invention is a method for producing valuable metal from raw materials comprising: a reduction melting step for subjecting the raw materials to a reduction melting process so as to obtain a reduction product containing slag and molten metal that contains valuable metal; a slag separation step for recovering the molten metal from the reduction product; and an oxidation purification step for adding silicon dioxide (SiO2) as flux to the recovered molten metal and performing an oxidation melting process. In the oxidation purification step, SiO2 is added as the flux such that the SiO2/MnO weight ratio is 0.4-1.0 in the slag.
Provided is a lithium ion secondary battery positive electrode active material that has excellent particle strength and still makes it possible to maintain favorable battery characteristics. A lithium ion secondary battery positive electrode active material according to the present invention comprises a coated lithium/metal composite oxide that is formed by providing a coating compound that includes lithium, tungsten, or both on the surface of the primary and secondary particles of a lithium/metal composite oxide that includes lithium, nickel, manganese, and cobalt and is formed from secondary particles that aggregate primary particles or from both the primary particles and the secondary particles. The particle strength of the lithium ion secondary battery positive electrode active material is 10–50 MPa. The secondary particles comprise a core part that occupies the interior of the particles and a shell part that encloses and covers the outside of the core part. As observed in an image of a cross-section thereof, the secondary particles have a morphology (a) that is a porous structure where the core part has a core part porosity of 20%–60%, a morphology (b) that is a solid structure where the shell part has a shell part porosity of no more than 5%, and a morphology (c) where the overall porosity of the secondary particles is 10%–50%.
H01M 4/525 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
H01M 4/36 - Selection of substances as active materials, active masses, active liquids
H01M 4/505 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy
01 - Chemical and biological materials for industrial, scientific and agricultural use
02 - Paints, varnishes, lacquers
12 - Land, air and water vehicles; parts of land vehicles
17 - Rubber and plastic; packing and insulating materials
19 - Non-metallic building materials
23 - Yarns and threads for textile use
24 - Textiles and textile goods
25 - Clothing; footwear; headgear
Goods & Services
Industrial chemicals; glue and adhesives for industrial
purposes; ceramic glazings; oil cement, namely putty;
chemical compositions for use in developing photographs;
unprocessed plastics in primary form. Pigments; coatings, namely paints; non-ferrous metal foils
and powders for use in painting, decorating, printing and
art; precious metal foils and powders for use in painting,
decorating, printing and art. Windshields. Chemical fiber, not for textile use; polyester fibres, other
than for textile use; plastic fibers, other than for textile
use; plastic sheeting for agricultural purposes; plastic
substances, semi-processed. Building glass. Thread; threads and yarns, other than degreased waste
threads and yarns; cotton thread and yarn; hemp thread and
yarn; jute thread and yarn; silk thread and yarn; spun wool;
worsted thread and yarn; woollen thread and yarn; chemical
fiber thread and yarn for textile use; sewing thread and
yarn; degreased waste thread and yarn. Woven fabrics; cotton fabrics; jute fabric; ramie fabric;
silk cloth; silk fabrics for printing patterns; silk base
mixed fabrics; woollen fabric; chemical fiber fabrics;
knitted fabrics of wool yarn; knitted fabrics of silk yarn;
knitted fabrics of cotton yarn; knitted fabrics of chemical
fiber yarn; felt and non-woven textile fabrics; kakebuton,
namely, futon quilts; banners of textile; banners of
plastic; cloth banners; cloth bunting; flags of textile;
flags of plastic; curtains of textile; curtains of plastic;
fabric valances; curtains made of textile fabrics; sleeping
bags. Clothing; coats; sweaters; shirts; suits; skirts; trousers;
smocks; overcoats; topcoats; nightwear; pyjamas; bath robes;
underwear; corsets being underclothing; brassieres;
petticoats; bathing suits; bathing caps; camisoles; tank
tops; tee-shirts; sleep masks; aprons being clothing; socks;
leg gaiters; fur stoles; shawls; scarves; gloves being
clothing; winter gloves; neckties; neckerchiefs; bandanas
being neckerchiefs; mufflers as neckscarves; ear muffs being
clothing; earbands being clothing; nightcaps; hats; caps
being headwear; visors being headwear; waistbands being
clothing; headbands being clothing; clothing belts; clothing
belts of textile; clothing waist belts; footwear; shoes;
slippers; sports shoes; ski boots; gymnastic shoes; riding
boots; clothing for sports; ski gloves; cycling gloves;
sports jerseys.
01 - Chemical and biological materials for industrial, scientific and agricultural use
02 - Paints, varnishes, lacquers
12 - Land, air and water vehicles; parts of land vehicles
17 - Rubber and plastic; packing and insulating materials
19 - Non-metallic building materials
23 - Yarns and threads for textile use
24 - Textiles and textile goods
25 - Clothing; footwear; headgear
Goods & Services
Industrial chemicals; glue and adhesives for industrial
purposes; ceramic glazings; oil cement, namely putty;
chemical compositions for use in developing photographs;
unprocessed plastics in primary form. Pigments; coatings, namely paints; non-ferrous metal foils
and powders for use in painting, decorating, printing and
art; precious metal foils and powders for use in painting,
decorating, printing and art. Windshields. Chemical fiber, not for textile use; polyester fibres, other
than for textile use; plastic fibers, other than for textile
use; plastic sheeting for agricultural purposes; plastic
substances, semi-processed. Building glass. Thread; threads and yarns, other than degreased waste
threads and yarns; cotton thread and yarn; hemp thread and
yarn; jute thread and yarn; silk thread and yarn; spun wool;
worsted thread and yarn; woollen thread and yarn; chemical
fiber thread and yarn for textile use; sewing thread and
yarn; degreased waste thread and yarn. Woven fabrics; cotton fabrics; jute fabric; ramie fabric;
silk cloth; silk fabrics for printing patterns; silk base
mixed fabrics; woollen fabric; chemical fiber fabrics;
knitted fabrics of wool yarn; knitted fabrics of silk yarn;
knitted fabrics of cotton yarn; knitted fabrics of chemical
fiber yarn; felt and non-woven textile fabrics; kakebuton,
namely, futon quilts; banners of textile; banners of
plastic; cloth banners; cloth bunting; flags of textile;
flags of plastic; curtains of textile; curtains of plastic;
fabric valances; curtains made of textile fabrics; sleeping
bags. Clothing; coats; sweaters; shirts; suits; skirts; trousers;
smocks; overcoats; topcoats; nightwear; pyjamas; bath robes;
underwear; corsets being underclothing; brassieres;
petticoats; bathing suits; bathing caps; camisoles; tank
tops; tee-shirts; sleep masks; aprons being clothing; socks;
leg gaiters; fur stoles; shawls; scarves; gloves being
clothing; winter gloves; neckties; neckerchiefs; bandanas
being neckerchiefs; mufflers as neckscarves; ear muffs being
clothing; earbands being clothing; nightcaps; hats; caps
being headwear; visors being headwear; waistbands being
clothing; headbands being clothing; clothing belts; clothing
belts of textile; clothing waist belts; footwear; shoes;
slippers; sports shoes; ski boots; gymnastic shoes; riding
boots; clothing for sports; ski gloves; cycling gloves;
sports jerseys.
