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WO/2022/028899A1 |
The invention relates to a method for extracting gold and/or silver and/or at least one platinum metal from at least one starting material, wherein the starting material is treated in an electrolyte solution using at least one oxidizing ...
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WO/2022/027146A1 |
Methods for leaching and extraction of precious metals. For example, methods of leaching palladium, rhodium, platinum from a substance comprising palladium, rhodium, and/or platinum (such as a platinum group metal (PGM) concentrate, and ...
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WO/2022/031191A1 |
A method of processing copper-containing materials with the recovery of a precious metal concentrate can be used in non-ferrous metallurgy in the comprehensive processing of copper materials, copper-nickel materials or other copper-conta...
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WO/2022/028900A1 |
The invention relates to a method for extracting gold and/or silver and/or at least one platinum metal from at least one starting material. The starting material is treated in a solution which contains at least one nitrile using at least...
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WO/2022/028901A1 |
The invention relates to a method for obtaining gold. Said method comprises the provision (41) of at least one starting material (20), which contains gold and carbon and/or sulfide ions, and the treatment of comminuted starting material ...
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WO/2022/028898A1 |
The invention relates to a method for extracting gold and/or silver and/or at least one platinum metal. At least one starting material, which contains gold and/or silver and/or at least one platinum metal, is introduced into an aqueous s...
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WO/2022/022987A1 |
The invention relates to a method for obtaining gold and silver from raw materials (1) such as ores, gangue or by-products having a minimum content of 0.2 ppm gold. The raw material (1) is comminuted by grinding in a grinding step (2). I...
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WO/2022/018437A1 |
1. The invention provides a method of recovering a precious metal in solid form from an article, the article comprising a base metal attached to the precious metal, the method comprising the steps of: (a) bioleaching of the base metal by...
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WO/2022/013414A1 |
Alkaline oxidation process for treating refractory sulfide ore or concentrate particles enriched in a metal to be recovered comprising stages in which refractory ore or concentrate particles are surface-oxidized in an alkaline oxidation ...
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WO/2022/013518A1 |
A method for separating at least two metals from each other in a metal refining process, the method comprising: injecting a feed solution comprising the metals into a column or flow pipe comprising a monolithic solid body having a plural...
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WO/2022/013824A1 |
THIS invention relates a method for processing a sulphide ore containing metal values comprising the integration of a sand heap leach (10) and a flotation process (12), providing a method which is suited to processing ores with significa...
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WO/2022/003747A1 |
Described is a process for the simultaneous treatment of residues of the non-ferrous metallurgical industry, in particular Waelz slag and residues deriving from thermal fuming processes of jarosite, goethite or KSS slag, comprising the f...
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WO/2022/001103A1 |
A method for pyroenrichment of platinum-group metal (PGMs) in an aluminum-based waste catalyst. A CaO-Al203-Fe203-B203 slag system is used, and high-efficiency enrichment of a platinum-group metal is implemented by means of slag iron sep...
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WO/2022/001351A1 |
Disclosed is a method for recovering a hydrogen fuel cell of a new energy vehicle. The method comprises the following steps: (1) sequentially discharging and disassembling the hydrogen fuel cell to obtain a hydrogen supply system, an air...
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WO/2021/257646A1 |
Methods of recovering precious metals from unconventional feed water sources. In approaches, the methods use a combination of one or more of ultrafiltration, nanofiltration, and/or reverse osmosis membranes. The unconventional feed water...
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WO/2021/255562A1 |
A method for recovery of precious metals from copper anode slime (CAS) may include leaching a leach liquor out of the CAS by mixing the CAS with a mixture of nitric acid and sulfuric acid, separating silver from the leach liquor by formi...
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WO/2021/148758A9 |
The present invention relates to a method for recovering one or more metals M chosen from gold and metals from the platinum group contained in an acidic aqueous phase A1, said method comprising the following steps: (1) extracting the met...
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WO/2021/246340A1 |
A method according to the present invention is for recovering a platinum group metal present within a film formation chamber after introducing a feedstock gas containing the platinum group metal into the film formation chamber and formin...
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WO/2021/237308A1 |
A process for producing direct reduced iron ("DRI") from iron ore and biomass in a single stage fluidised bed includes injecting (a) iron ore, (b) gaseous oxygen and (c) a solid reductant including biomass into a reaction zone of the flu...
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WO/2021/217273A1 |
Methods for recovering gold from a refractory gold ore and concentrate are described. The method can include leaching the refractory gold ore and concentrate with the alkaline reagent under ambient or near-ambient conditions and a subseq...
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WO/2021/212936A1 |
The present invention relates to a method for recovering a precious metal from a precious metal-containing waste catalyst, comprising the following steps: (i) at least partially dissolving a precious metal-containing waste catalyst in an...
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WO/2021/207792A1 |
A process for leaching minerals that contain metal sulphides and one or more precious metals or precious metal compounds, the process comprising the steps of a first leaching step to leach the minerals under oxidative conditions at a pH ...
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WO/2021/207791A1 |
A process for treating minerals containing metal sulphide and a precious metal, the process comprising fine grinding the minerals and subjecting the minerals to a first leaching step conducted under oxidising conditions at a pH of from 5...
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WO/2021/195430A1 |
A method for precious metal extraction comprising contacting a precious metal-containing ore with an improved cyanide extraction agent under conditions suitable for the formation of a coated precious metal-containing ore where the extrac...
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WO/2021/186143A1 |
A method for separating of at least two transition metals, the method comprising: injecting a feed solution into a chromatography column comprising a chromatographic support media, the feed solution comprising at least two transition met...
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WO/2021/179847A1 |
Disclosed is a method for designing a slag type for capturing a platinum group metal in a waste catalyst by using iron. The method comprises: on the basis of the requirements of the easy separation of a slag phase and an iron phase, and ...
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WO/2021/181275A1 |
A noble and base metal recovery process from a comminuted ore which is added to a cyanide leach circuit. The solution from the leach circuit is treated with activated carbon that becomes loaded with the metal and is delivered to an eluti...
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WO/2021/172718A1 |
The present invention relates to a metal leaching method using linking between bioleaching and adsorption, the method adsorbing and recovering metal cyanide ions generated through bioleaching, thereby increasing metal leaching efficiency...
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WO/2021/169481A1 |
A method and device for recovering silver and mixed acid from a silver-containing waste acid solution in photovoltaic waste liquid. The method comprises: adding a chlorine-containing solution into the silver-containing waste acid solutio...
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WO/2021/169780A1 |
A gold leaching agent for selectively leaching gold from a gold-containing material, and a preparation method therefor and application thereof. The gold leaching agent is composed of halogen-containing organic matters that are soluble in...
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WO/2021/165225A1 |
A process for separating a fusion mix sample comprising a slag material and a collector material using a separator. The separator comprising a plurality of impact members configured to rotate. The process comprising the steps of providin...
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WO/2021/164931A1 |
The invention relates to a method for producing a collector alloy which comprises a total of 25 to 100 wt.% of precious metal, comprising 0 to <97 wt.% of the precious metal silver, 0 to 75 wt.% of at least one precious metal selected fr...
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WO/2021/153710A1 |
Provided is a platinum-group metal recovery method for efficiently recovering platinum-group metals. The platinum-group metal recovery method comprises an immobilization step for bringing a raw material melt containing platinum-group met...
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WO/2021/147342A1 |
An all-component rapid microwave digestion and noble metal ion liquid extraction method for a waste circuit board, belonging to the field of hydrometallurgy. As microwave can penetrate a leaching medium and directly heat a circuit board,...
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WO/2021/140012A1 |
The invention concerns a process suitable for the recovery of platinum group metals (PGM) present in PGM-bearing catalysts comprising silicon carbide (SiC). More particularly, the process for the recovery of PGM present in PGM-bearing ca...
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WO/2021/129205A1 |
A method for the coordinated treatment of slag from the pyrolysis of and smoke from smelting a scrap circuit board, which belongs to the field of the comprehensive recovery and use of valuable elements in typical ash from the fire treatm...
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WO/2021/127711A1 |
A method for the recovery of a precious metal from activated carbon fines which includes the steps of adsorption of the precious metals from the activated carbon fines onto a weak-base anion exchange resin which contains guanidine functi...
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WO/2021/117385A1 |
The present invention addresses the problem of providing a method for recovering a catalytic metal from an aqueous solution which contains a catalytic metal which is coprecipitated with tin, said method being characterized by including: ...
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WO/2021/099021A1 |
A process for recovering precious metal from an acidic aqueous solution containing dissolved precious metal and free chlorine, comprising the sequential steps: (1) a salt of a non-precious metal at a low oxidation stage and in the form o...
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WO/2021/094823A1 |
Processes for recovering iodine from solid materials in which copper is present are performed by combining the solid material with a basic solution having a pH greater than 10 to solubilize and remove iodine from the solid material, ther...
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WO/2021/089233A1 |
The present invention relates to a method for obtaining platinum and/or ruthenium. Said method comprises the provision of a solution of ethanol in water (11), the introduction of at least one starting material (20) into the solution (12)...
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WO/2021/085023A1 |
Provided is a method for treating a gold-containing ore or a gold-containing refining intermediate produced by subjecting the ore to a refining treatment, the method comprising: a leaching step of leaching gold out from the ore or the re...
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WO/2021/062897A1 |
Disclosed are an irreversible covalent organic framework for efficiently and selectively recovering gold and a preparation method therefor, and the present invention belongs to the technical field of recovering a precious metal from an a...
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WO/2021/045709A1 |
The invention relates to the platinum recovery method to obtain platinum with minimum 99.95% purity from platinum-containing scraps, the method comprises the process steps of precipitating and filtrating potassium hexachloro platinate by...
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WO/2021/044324A1 |
The present invention relates to a device (10) for increasing metal evaporation efficiency in containers (3), preferably for use in crucibles (3), in vacuum distillation systems, wherein at least a condenser (8) is provided, said device ...
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WO/2021/040546A1 |
The method of separating grains of valuable minerals, precious metals, rare-earth metals, precious and semi-precious stones from natural ores in the aquatic environment by means of the phenomenon of adhesion, consecutively covering known...
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WO/2021/030905A1 |
The disclosure provides a magnetic reagent comprised of a recombinant yeast cell having the following genetic modifications: impairment of the CCC1 gene; addition of at least one copy of a human ferritin gene complex; addition of at leas...
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WO/2021/014946A1 |
A PGM recovery method wherein the following steps are performed in order to recover a PGM alloy: a reduction smelting step in which a PGM-including processing target, a base metal and/or a base metal oxide, a flux, and a reduction agent ...
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WO/2021/005007A1 |
The present invention relates to a gold extraction set-up (100, 200, 300, 400a, 400b, 500a, 500b, 500c) for gold extraction from natural, industrial or mining fluids having a volume of greater than 500 m³, wherein the gold extraction se...
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WO/2021/003521A1 |
A method of processing a gold-containing ore that contains reactive sulphide minerals that includes selecting processing conditions to optimize liberating gold in reactive sulphide minerals and processing the ore in accordance with the s...
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