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Patent Searching and Data


Matches 151 - 200 out of 3,171

Document Document Title
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...  
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...  
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...  
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...  
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...  
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...  
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...  
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...  
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 ...  
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...  
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...  
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...  
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 ...  
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...  
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...  
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...  
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...  
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...  
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...  
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...  
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,...  
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...  
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...  
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...  
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: ...  
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...  
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...  
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)...  
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...  
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...  
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...  
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 ...  
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...  
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...  
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 ...  
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...  
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...  
WO/2021/001690A2
The present disclosure is directed to a gold recovery process in which activated carbon or another carbon-based material is used to accelerate thiosulfate leaching of gold from a gold-bearing material.  
WO/2020/253733A1
A method for selective oxygen pressure leaching of precious metal enrichment using nickeliferous material with high iron and copper contents. The method comprises: purification and impurity removal, atmospheric pressure leaching, oxygen ...  
WO/2020/245736A1
The subject of the invention is a procedure for the recovery of the galvanic layer containing gold and other precious metals, as well as the carrier from electronic components. The base materials of the procedure are primarily electronic...  
WO/2020/245652A1
The present disclosure is directed to a process for thiosulfate leaching of a precious metal-containing material and recovering a precious metal from a pregnant leach solution using a resin extractant. The precious metal is eluted from t...  
WO/2020/238685A1
Disclosed are a precious metal recovery method, a precious metal recovery device and a precious metal recovery system. The precious metal recovery method comprises: a melting procedure, during which a substance to be recovered, which con...  
WO/2020/238505A1
Provided are an adsorption material based on a crosslinked protein, and an application thereof for recovering precious metals; The adsorbent material is a microparticle formed by a crosslinking agent crosslinking a phase transition prote...  
WO/2020/224053A1
A method for comprehensive recycling polymetallic products from waste integrated circuit boards by pyrolysis, comprising the steps of: (1) smelting and blending: adding polymetal obtained by pyrolysis of waste integrated circuit boards i...  
WO/2020/222859A1
PGM converting process and jacketed rotary converter. The process can include low- or no-flux converting; partial pre-oxidation of PGM collector alloy; using a refractory protectant in the converter; magnetic separation of slag; recyclin...  
WO/2020/206933A1
Examples of the present invention relate to the field of gold metallurgy, and in particular, to an environmentally friendly non-cyanide gold extractor, a preparation method and use thereof. The environmentally friendly non-cyanide gold e...  
WO/2020/206962A1
Disclosed is a photocatalysis method for dissolving a metal, comprising dispersing a metal containing a material needing to be dissolved in a mixed solution of a cyanide compound and an organic chloride, then adding a photocatalyst, and ...  
WO/2020/198778A1
A process for recovering a precious metal from a precious metal containing article or composition is disclosed. The process comprises treating the precious metal containing article or composition with an oxidant composition under conditi...  
WO/2020/192977A1
The invention relates to a method for producing a PGM collector alloy, comprising the steps: (1) providing (a) copper and/or silver, (b) material to be processed by melting metallurgy, in the form of at least one sodium and/or potassium ...  
WO/2020/188527A1
This invention relates to a process for the enhanced recovery of chromite and platinum group metals (PGMs) from a mixed chromite/PGM ore. Ore is ground 12, classified 14, to produce a coarse fraction and a fine fraction 36. The coarse fr...  

Matches 151 - 200 out of 3,171