Abstract

The present invention relates to a method for the recovery of vanadium from a vanadium containing leach residue, the method comprising the steps of: subjecting the leach residue to a pulping step, the pulping step comprising the contact of the leach residue with an aqueous solution to produce a repulp slurry; passing the repulp slurry to a solid liquid separation step to produce a repulp solution containing vanadium and a repulp residue; and recovering vanadium from solution in an ion exchange step.

IPC Classes  ?

• C22B 34/22 - Obtaining vanadium
• 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 3/42 - Treatment or purification of solutions, e.g. obtained by leaching by ion-exchange extraction
• C22B 3/44 - Treatment or purification of solutions, e.g. obtained by leaching by chemical processes

Abstract

A method for the recovery of vanadium from a vanadium containing feed stream, the method comprising the steps of: subjecting the vanadium feed stream to a leach step, the leach step comprising contacting the vanadium feed stream with an alkaline carbonate leach solution to form a leach slurry comprising a pregnant leach solution containing vanadium and a solid residue; passing the leach slurry to a solid/liquid separation step to produce a pregnant leach solution containing vanadium; and recovering a vanadium product from the pregnant leach solution.

IPC Classes  ?

• C22B 34/22 - Obtaining vanadium
• C22B 7/04 - Working-up slag
• C22B 3/22 - Treatment or purification of solutions, e.g. obtained by leaching by physical processes, e.g. by filtration, by magnetic means
• C22B 3/42 - Treatment or purification of solutions, e.g. obtained by leaching by ion-exchange extraction
• C22B 3/12 - Extraction of metal compounds from ores or concentrates by wet processes by leaching in inorganic alkaline solutions
• C22B 7/00 - Working-up raw materials other than ores, e.g. scrap, to produce non-ferrous metals or compounds thereof

Abstract

The present invention relates to a method for the recovery of vanadium from a vanadium containing leach residue, the method comprising the steps of: subjecting the leach residue to a pulping step, the pulping step comprising the contact of the leach residue with an aqueous solution to produce a repulp slurry; passing the repulp slurry to a solid liquid separation step to produce a repulp solution containing vanadium and a repulp residue; and recovering vanadium from solution in an ion exchange step.

IPC Classes  ?

• C22B 3/12 - Extraction of metal compounds from ores or concentrates by wet processes by leaching in inorganic alkaline solutions
• 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 3/42 - Treatment or purification of solutions, e.g. obtained by leaching by ion-exchange extraction
• C22B 34/22 - Obtaining vanadium

Abstract

The present invention relates to a method for the recovery of vanadium from a vanadium containing leach residue, the method comprising the steps of: subjecting the leach residue to a calcination step to produce a calcined residue; subjecting the calcined residue to a leach step comprising contacting the calcined residue with an alkaline carbonate leach solution to form a leach slurry; passing the leach slurry to a solid liquid separation step to produce a calcine leach solution containing vanadium and a secondary leach residue; and recovering a vanadium product from the calcine leach solution.

IPC Classes  ?

• C22B 1/02 - Roasting processes
• C22B 3/12 - Extraction of metal compounds from ores or concentrates by wet processes by leaching in inorganic alkaline solutions
• 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 34/22 - Obtaining vanadium
• B01J 6/00 - CalciningFusing
• C01G 31/00 - Compounds of vanadium
• C22B 7/00 - Working-up raw materials other than ores, e.g. scrap, to produce non-ferrous metals or compounds thereof
• C22B 7/04 - Working-up slag

Abstract

The present invention relates to a method for the recovery of vanadium from a vanadium containing leach residue, the method comprising the steps of: subjecting the leach residue to a pulping step, the pulping step comprising the contact of the leach residue with an aqueous solution to produce a repulp slurry; passing the repulp slurry to a solid liquid separation step to produce a repulp solution containing vanadium and a repulp residue; and recovering vanadium from solution in an ion exchange step.

IPC Classes  ?

• C22B 3/12 - Extraction of metal compounds from ores or concentrates by wet processes by leaching in inorganic alkaline solutions
• 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 3/42 - Treatment or purification of solutions, e.g. obtained by leaching by ion-exchange extraction
• C22B 34/22 - Obtaining vanadium

Abstract

The present invention relates to a method for the recovery of vanadium from a vanadium containing feed stream, the method comprising the steps of: subjecting the vanadium feed stream to a leach step, the leach step comprising contacting the vanadium feed stream with an alkaline carbonate leach solution to form a leach slurry comprising a pregnant leach solution containing vanadium and a solid residue; contacting the leach slurry with an ion exchange resin adapted to extract vanadium from the leach slurry, thereby producing a loaded resin; separating the loaded resin from the leach slurry; and recovering vanadium from the loaded resin.

IPC Classes  ?

• C22B 3/12 - Extraction of metal compounds from ores or concentrates by wet processes by leaching in inorganic alkaline solutions
• 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 3/42 - Treatment or purification of solutions, e.g. obtained by leaching by ion-exchange extraction
• C22B 34/22 - Obtaining vanadium

Abstract

A method for the recovery of vanadium from a vanadium containing feed stream, the method comprising the steps of: subjecting the vanadium feed stream to a leach step, the leach step comprising contacting the vanadium feed stream with an alkaline carbonate leach solution to form a leach slurry comprising a pregnant leach solution containing vanadium and a solid residue; passing the leach slurry to a solid/liquid separation step to produce a pregnant leach solution containing vanadium; andrecovering a vanadium product from the pregnant leach solution.

IPC Classes  ?

• C01G 31/00 - Compounds of vanadium
• C22B 34/22 - Obtaining vanadium

Abstract

A method for the recovery of vanadium from a vanadium containing feed stream, the method comprising the steps of: subjecting the vanadium feed stream to a leach step, the leach step comprising contacting the vanadium feed stream with an alkaline carbonate leach solution to form a leach slurry comprising a pregnant leach solution containing vanadium and a solid residue; passing the leach slurry to a solid/liquid separation step to produce a pregnant leach solution containing vanadium; andrecovering a vanadium product from the pregnant leach solution.

IPC Classes  ?

• C22B 34/22 - Obtaining vanadium
• C01G 31/00 - Compounds of vanadium

Abstract

A method for the recovery of vanadium from a vanadium containing feed stream, the method comprises: subjecting the vanadium containing feed stream to an acid leach step to form a slurry including a pregnant leach solution that comprises dissolved vanadium and a solid residue; passing the product of the leach step to a solid/liquid separation step to produce a pregnant leach solution that comprises dissolved vanadium; contacting the pregnant leach solution with a reducing agent to reduce one or more species in the pregnant leach solution; passing the pregnant leach solution to a precipitation step in which the solution pH is increased to precipitate a vanadium product; and recovering the vanadium product from the solution.

IPC Classes  ?

• C22B 34/22 - Obtaining vanadium
• C01G 31/00 - Compounds of vanadium
• C22B 3/44 - Treatment or purification of solutions, e.g. obtained by leaching by chemical processes

Abstract

The present invention relates to a method for the extraction and recovery of titanium products from a feedstock comprising titanomagnetite species, the method comprising the steps of: i. subjecting the feedstock to a primary leach step comprising the acid leaching of the feedstock to extract iron into solution; ii. passing the product of the leach step (i) to a solid/liquid separation step; iii. passing the solid product of separation step (ii) to a secondary leach step comprising the acid leaching of the solid product to extract titanium into solution; iv. passing the product of the leach step (iii) to a solid/liquid separation step; v. passing the liquid product of separation step (iv) to a TiO2 precipitation step; and vi. passing the product of the TiO2 precipitation step to a solid/liquid separation step to recover a TiO2 product.

IPC Classes  ?

• C22B 3/10 - Hydrochloric acid
• C22B 34/12 - Obtaining titanium
• C22B 34/22 - Obtaining vanadium
• C01G 23/047 - Titanium dioxide