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WO/2022/185862A1 |
Provided are a platinum-group metal recovery agent represented by general formula (1) and a platinum-group metal recovery method in which the platinum-group metal recovery agent is used to recover platinum or rhodium from a hydrochloric ...
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WO/2022/182268A1 |
A method for extracting platinum and palladium from silver electrolytes envisages the dissolution of a starting material, the sorption extraction of platinum metals from the silver electrolyte using an anion exchange resin, and desorptio...
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WO/2022/173335A1 |
A method for recovering gold from a solution containing impurities of platinum metals and non-precious metals relates to the hydrometallurgy of precious metals and can be used for obtaining gold in metal form. The technical result is ach...
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WO/2022/173321A1 |
The proposed invention relates to the field of the hydrometallurgy of precious metals and can be used in processes for treating different types of concentrates containing precious metals, in particular ruthenium in the form of potassium ...
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WO/2022/167167A1 |
The invention relates to a method for reductive extraction of elemental noble metals from an acidic aqueous solution containing noble metal, the method comprising the addition of non-noble metal including zinc and/or tin to the acidic aq...
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WO/2022/168015A1 |
According to one aspect of the invention, there is provided a plant layout for extracting fine chrome from a PGM tails stream, typically after the PGM tails stream has undergone a desliming process to yield a fine fraction mineral slurry...
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WO/2022/162252A1 |
The present method relates to a method for biological recovery of metals from electrical and electronic waste, comprising: a) inoculating a series of aerobic iron-oxidising microorganisms and a mineral medium or fertilisers into a column...
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WO/2022/140770A1 |
Disclosed herein are compositions, methods, and systems for supramolecular gold stripping where the composition comprises a surface-bound, linear gold anion and a solution comprising a molecular receptor that facilitates the transfer of ...
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WO/2022/138982A1 |
In a positive electrode for electrolytic plating, a titanium-iridium laminate is used. Therefore, it is desired to recovery a resource after disposal. However, these substances are extremely stable. Therefore, it is not easy to separate ...
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WO/2022/134467A1 |
Disclosed is a method for treating a waste circuit board by means of a continuous copper smelting process. The method comprises the following steps: (1) pre-treating a waste circuit board; (2) batching and conveying; (3) side-blowing sme...
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WO/2022/132061A1 |
The present invention relates to a method that enables co- recovery and selective separation of mercury (Hg) and gold (Au) from Au-Hg metal alloys available in the wastes formed after amalgamation, or in different AuxHgy forms that are n...
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WO/2022/123438A1 |
The present invention discloses a process for recovering precious metals from electronic waste comprising the steps of cutting the terminals from the electronic waste involving metallic and non-metallic fractions using a mechanical proce...
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WO/2022/125872A1 |
The present disclosure is related to the recovery of metal(s) using molten salt and related systems.
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WO/2022/125547A1 |
Methods of recovering precious metals and/or lithium 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 unconventi...
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WO/2022/119501A1 |
The present invention relates to a composition comprising a first weak acid, an oxidant and a metal complexing agent, wherein the composition has a pH in the range of 2 to 4. The present invention also relates to a method of preparing su...
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WO/2022/117530A1 |
Process for gold and/or platinum group metals heap leaching comprising irrigating a heap (1) with an irrigation solution (9, 10, 11 & 12) containing sodium cyanide for leaching gold and/or platinum group metals from said gold and/or plat...
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WO/2022/109628A1 |
Systems and methods for plasma treatment to recover precious metals from tailings with enhanced leachability are described.
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WO/2022/104427A1 |
A process for recovery of one or more target metals, selected from precious metals and chalcophile metals as respectively herein defined, from materials containing precious and/or chalcophile metal/s, said process including: (i) leaching...
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WO/2022/097167A1 |
The present invention relates to a method for selectively precipitating and extracting gold in aqueous solution by niacin. Aqueous Au3+ is precipitated selectively as it's complex from gold containing acidic mixtures by biomolecule niaci...
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WO/2022/087676A1 |
The invention provides a process for recovering precious metal from an aqueous solution comprising thiosulfate and at least one precious metal selected from gold and silver, the process comprising: introducing a soluble reducing agent to...
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WO/2022/087656A1 |
The invention provides a process for removing cyanide from a cyanide-bearing aqueous fluid, the process comprising: (i) adding a solid composition comprising a first mixed-metal cyanide complex comprising copper and iron to a cyanide-bea...
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WO/2022/084706A1 |
The application relates to the field of artisanal gold mining and provides a device and a process for distilling and condensing mercury.
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WO/2022/081411A1 |
The present disclosure provides a method of recovering copper, molybdenum, and a precious metal value from a metal-bearing material, the method comprising bulk flotation of the metal-bearing material to form a flotation product, wherein ...
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WO/2022/078667A1 |
The invention relates to a method for recovering noble metal from a heterogeneous catalytic converter comprising a solid supporting material and palladium, platinum or rhodium, present at least partially in elemental form, said method co...
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WO/2022/079133A1 |
The invention relates to a method for purifying at least one fraction or compound of interest from a starting material comprising at least two inorganic compounds or at least one inorganic compound and at least one organic compound. The ...
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WO/2022/082042A1 |
In described embodiments, a process for recovery of a metal from a grounded ore comprises leaching the grounded ore with a leaching reagent, an oxidant and an oxygen vector. In particular, a process for recovery of gold from a grounded g...
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WO/2022/081413A1 |
The present disclosure provides a method of recovering copper, molybdenum, and a precious metal value from a metal-bearing material, the method comprising bulk flotation of the metal-bearing material to form a flotation product, wherein ...
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WO/2022/067448A1 |
Solutions and methods for leaching coinage metals. For example, Solutions and methods for leaching copper and/or silver from a substance comprising copper and/or silver (such as a coinage metal-concentrate, or electronic waste) using a w...
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WO/2022/071274A1 |
This method for eluting a valuable metal from a glass-containing electrode containing glass and a valuable metal insoluble in a hydrofluoric acid involves: immersing an object including the glass-containing electrode in a hydrofluoric ac...
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WO/2022/071297A1 |
Provided is a method for eluting valuable metals from a glass-containing electrode that contains valuable metals and glass, wherein the method includes: a step for pulverizing an object that contains a glass-containing electrode; and a s...
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WO/2022/063955A1 |
The invention relates to a process of heap leaching metal from a metal bearing ore comprising the steps: a) agglomerating the ore with an agglomeration agent to form an agglomerated ore, b) forming the agglomerated ore into a heap; and c...
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WO/2022/067085A1 |
Ultrafast flash Joule heating synthesis method and system to form carbide particles from a mixture of a reaction precursor comprising a precursor and a carbon conductive additive.
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WO/2022/062674A1 |
The present invention relates to the field of hydrometallurgy. Disclosed is a method for recycling gold from full-mud cyanide tailings, comprising the following steps: (1) performing pulping and screening on cyanide tailings to obtain a ...
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WO/2022/049790A1 |
The present invention relates to a method for recovering gold, the method comprising a step for using a gold recovery agent to recover gold from a gold solution in which gold, iodine, an iodine salt, and a reducing agent are dissolved. T...
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WO/2022/040334A1 |
A method, and systems in which such method may be practiced, allow for the separation of elemental metals from metal alloy. A metal alloy is atomized to form metal alloy particulates. The metal alloy particulates are exposed to an oxidiz...
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WO/2022/038530A1 |
The present invention relates to the recovery of high value metals such as gold and silver from the ores containing them, by means of the leaching process which is carried out in tanks or reactors, and to the destruction of cyanide, whic...
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WO/2022/033904A1 |
The present invention relates to lixiviant medium for extracting gold from a gold-containing solid material, which lixiviant medium comprises a polyether-modified siloxane and a non-ionic surfactant. The present invention also relates to...
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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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