Abstract

An apparatus is provided for detaching substrate components such as electronic components mounted on a substrate. The apparatus has a screw blade roller having a screw blade attached to a rotary shaft of the screw blade roller, wherein the apparatus causes the screw blade roller to come into contact with the electronic components mounted on the substrate and detaches the electronic components while the screw blade roller rotates. In the apparatus, two or more screw blades are arranged, and the winding direction of the screw blade(s) in one side of the screw blade roller is opposite to the winding direction of the screw blade(s) in the other side of the screw blade roller. Also, the screw blade roller is placed at a front side of the substrate where many components are typically mounted. A feed roller supporting a rear side of the substrate is placed at the rear side of the substrate.

IPC Classes  ?

• H05K 3/22 - Secondary treatment of printed circuits
• B09B 3/30 - Destroying solid waste or transforming solid waste into something useful or harmless involving mechanical treatment
• B09B 3/40 - Destroying solid waste or transforming solid waste into something useful or harmless involving thermal treatment, e.g. evaporation
• B09B 101/15 - Electronic waste
• H01L 23/00 - Details of semiconductor or other solid state devices

Abstract

[Problem] To provide a means for efficiently peeling electronic components mounted on a mount board. [Solution] The present invention pertains to a board peeling device which peels electronic components mounted on a board, the board peeling device being characterized by having a screw blade roller in which screw blades are attached to a rotary shaft, wherein: the screw blade roller makes contact with the electronic components mounted on the board while rotating, and has a function (structure) of peeling the components; the screw blades are disposed in plurality; the winding direction of the screw blades in one region of the screw blade roller is opposite to the winding direction of the screw blades in the other region; the screw blade roller is disposed on the board front surface side where a plurality of components are mounted; and feeding rollers which support the board rear surface are disposed on the board rear surface side.

IPC Classes  ?

• B09B 3/30 - Destroying solid waste or transforming solid waste into something useful or harmless involving mechanical treatment
• B09B 3/40 - Destroying solid waste or transforming solid waste into something useful or harmless involving thermal treatment, e.g. evaporation

Abstract

The present invention provides an electronic component separation device 1 and an electronic component separation method, configured so that heating efficiency is good, and an electronic component can be easily separated from a printed substrate without requiring complex machinery such as vibratory equipment. The electronic component separation device 1 comprises: a conveying unit 2 that conveys a printed substrate 10 to which an electronic component EP is attached; a heating unit 3 that heats the printed substrate 10 during conveying by the conveying unit 2; and a separating unit 4 that causes the printed substrate 10 to drop onto a dropping surface 6 below the conveying unit 2 from the conveying unit 2 during heating or after heating, and that separates the electronic component EP from the printed substrate 10.

IPC Classes  ?

• H05K 3/34 - Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits by soldering
• B09B 3/00 - Destroying solid waste or transforming solid waste into something useful or harmless
• B09B 5/00 - Operations not covered by a single other subclass or by a single other group in this subclass

Abstract

A method for recycling processing of dust generated in a converter furnace, includes: crushing and drying a cake formed by adding a binder to a slurry containing iron powder-containing dust that is generated at the time of converter blowing and wet-collected to produce a mixed slurry and subjecting the produced mixed slurry to a dehydration treatment in a filter press; accumulating the cake in an accumulation tank; and charging the cake into a converter furnace 10, the crushed product in the accumulation tank 25 is kept at a temperature of less than 90° C. by forcibly passing air into the accumulation tank 25 and charged into a converter furnace according to the converter operation.

IPC Classes  ?

• C21B 5/00 - Making pig-iron in the blast furnace
• C21C 5/38 - Removal of waste gases or dust
• C21C 5/56 - Manufacture of steel by other methods
• C21C 7/00 - Treating molten ferrous alloys, e.g. steel, not covered by groups
• C22B 7/02 - Working-up flue dust
• C22B 1/242 - BindingBriquetting with binders
• C21C 7/068 - Decarburising

Abstract

Provided is a method for the recycling-processing of dust generated in a converter furnace, whereby it becomes possible to process and collect the dust at low cost and within a short time and to return the collected dust to a converter furnace process as a metal iron resource. A method for recycling-processing of dust generated in a converter furnace, said method comprising dehydrating a mixed slurry, which is prepared by adding a binder to a slurry containing iron-powder-containing dust that is generated upon the blowing of the converter furnace and is collected in a wet mode, by means of a filter press to form a cake, pulverizing and drying the cake, then storing the pulverized product in a storage vessel, and then installing the pulverized product in a converter furnace (10), wherein air is forcibly allowed to blow into the storage vessel (25) to keep the temperature of the pulverized product stored in the storage vessel (25) at a temperature lower than 90°C, and the pulverized product is installed in the converter furnace in accordance with the operation of the converter furnace.

IPC Classes  ?

• C21C 5/28 - Manufacture of steel in the converter
• C22B 1/00 - Preliminary treatment of ores or scrap
• C22B 1/248 - BindingBriquetting of metal scrap or alloys

Abstract

A method for recycling a plastic component (13) in which a coating film (12) that is mainly composed of a thermosetting resin is formed on the surface of a plastic molded body (10) that is formed of a thermoplastic resin, with a metal plating layer (11) being interposed therebetween. The method for recycling a plastic component (13) comprises: a first step wherein the plastic component (13) is exposed to a high temperature atmosphere so as to embrittle the coating film (12) and the embrittled coating film (12) is removed; and a second step wherein the plastic molded body (10) having the metal plating layer (11) exposed on the surface is brought into contact with a solution that dissolves the metal plating layer (11), so that the metal plating layer (11) is removed. The plastic molded body (10), from which the coating film (12) and the metal plating layer (11) have been removed, is recycled as a plastic starting material. Consequently, the plastic component (13) can be processed even if the size thereof is large since it is not necessary to crush the plastic component (13), and the recovery rate of the plastic molded body (10), from which the coating film (12) and the metal plating layer (11) have been removed, is high. In addition, the recovered plastic molded body (10) contains less impurities, and the plating metal can be also recovered in some cases.

IPC Classes  ?

• B29B 17/02 - Separating plastics from other materials
• C23F 1/00 - Etching metallic material by chemical means

Abstract

A method comprising: a first step in which coarse particles are separated from a converter dust recovered with a wet type dust collector to obtain a zinc-containing fine-particle dust having a zinc content of 0.5-10 mass% and an iron content of 50-90 mass%; a second step in which the dust is separated by a water cyclone (15) into a low-zinc-content medium-fine-particle dust having an average particle diameter of 8-25 쎽m and a zinc content of 1 mass% or lower and a high-zinc-content microfine-particle dust having an average particle diameter of 1-5 쎽m and a zinc content higher than 1 mass% and containing more iron oxide than the medium-fine-particle dust; a third step in which the medium-fine-particle dust, without undergoing a zinc elimination treatment, is mixed with a binder and pressed to form a mass for use as a converter feed material or electric-furnace feed material; and a fourth step in which the microfine-particle dust is dried and subsequently subjected to a zinc elimination treatment and the resultant dust is used as it is as a blast-furnace feed material or is converted to a mass for use as a converter feed material.

IPC Classes  ?

• C22B 1/00 - Preliminary treatment of ores or scrap
• C21C 5/28 - Manufacture of steel in the converter
• C21C 5/52 - Manufacture of steel in electric furnaces
• C22B 1/243 - BindingBriquetting with binders inorganic