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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.
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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 ...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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 ...
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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...
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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 ...
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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...
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WO/2020/177880A1 |
The invention relates to a method for extracting gold and/or silver and/or at least one platinum metal. At least one starting material (10) which contains gold, silver and/or platinum metal is introduced into an aqueous solution (20) tha...
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WO/2020/165845A1 |
A method (1) for pre-treating whole ore and/or concentrate comprising a precious metal for subsequent precious metal recovery involves processing a solids feed (2) in a pre-treatment stage (3) and then in a sulfide oxidation stage (4). T...
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WO/2020/160611A1 |
A method of recovering gold from gold-containing sulphide minerals in an ore that has a recovery-oxidation curve in a graph of % recovery of gold versus % oxidation of the minerals that has a slope of less than 1:1 in a higher % oxidatio...
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WO/2020/157543A1 |
The invention relates to a process for recovering precious metals, in particular gold, from activated carbon powder used in a cyanide leaching process for extracting metal, said process comprising the following steps: - an activated carb...
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WO/2020/138321A1 |
The present invention pertains to a metal sheet comprising a plurality of plated parts, a frame part, and a linking part linking the plated parts and the frame part, wherein the plurality of plated parts, the frame part, and the linking ...
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WO/2020/128137A1 |
A method of treating process water of a flotation plant (1) is disclosed. The flotation plant (1) comprises a mineral flotation line (10) and a process water circuit (20) for treating underflow and/or overflow of the flotation line. The ...
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WO/2020/118446A1 |
The present disclosure broadly relates to a process for recovering gold and/or silver values from various feedstocks. More specifically, but not exclusively, the present disclosure relates to a process for the selective recovery of gold ...
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WO/2020/041914A1 |
The present invention relates to a system for imparting solubility in an aqueous medium to chemical elements contained in a sulfide ore concentrate having iron, cobalt, nickel, copper, platinum-group metals and other metals considered va...
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WO/2020/037357A1 |
A method of recovering gold and copper from a sulphide ore includes (a) removing valuable fines from a product stream from a comminution circuit, such as a crushing and milling circuit, for run of mine ore and producing a valuable fines ...
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WO/2020/039376A1 |
A method and plant for gold recovery from any gold-bearing ore by law-temperature chlorination, wherein the finely-divided gold-bearing feedstock is chlorinated gaseous chlorine at a temperature of about 245°C to form a highly volatile ...
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WO/2020/031032A1 |
The present invention relates to a process for treatment, isolation and separation of valuable ferromagnetic compounds contained in wastes of electrical and electronic equipments (WEEEs). In particular, the present invention relates to a...
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WO/2020/016671A1 |
The purpose of the present invention is to recover a material that constitutes a fuel cell stack, in a simple way. This method for recovering a material that constitutes a fuel cell stack is for recovering a material that constitutes a f...
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WO/2020/010400A1 |
The disclosure provides a process of treating an ore comprising a sulphide material. The process comprises providing a slurry of the ore comprising the sulphide material and adding a first oxidising agent and a second oxidising agent to ...
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WO/2020/006584A1 |
A PGM beneficiation process comprises (A) obtaining a PGM concentrate from which basemetals have been removed and comprising PGM complexes as chloride species, (B)producinga refining stream rich in a chloride species of a PGM, (C) if des...
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WO/2019/235967A1 |
A method for refining gold-silver alloys to produce gold relates to the hydrometallurgy of precious metals and can be used in refining gold-silver alloys. Gold-silver alloys are dissolved in aqua regia. A sodium hydroxide solution is the...
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WO/2019/219444A1 |
The invention relates to a method for recovering gold and/or silver and/or at least one platinum metal from components of a fuel cell stack (11) of a fuel cell (10) or of an electrolyzer. In an oxidation step, the components are treated ...
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WO/2019/203778A1 |
The invention relates to the mining industry. A method of decontaminating technogenic wastes and tailings after vat or heap leaching of raw material and preparing the raw material for enrichment and/or extraction of metals comprises mixi...
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WO/2019/203667A1 |
This invention provides the extraction of precious metals using enhanced gravity concentration-flotation processes of extracting the metals from the ore. Moreover, wastewater from the extraction stage is treated before being discharged t...
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WO/2019/194687A1 |
This invention provides the extraction of precious metals using an enhanced chlorination process. This is done through a variation of the chlorination process that utilizes chloride to oxidize sulfides, which physically lock the gold com...
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WO/2019/193413A1 |
A method for supercritical fluid extraction of metal from a source, the method comprising: providing a reactor chamber; providing a source comprising a target metal; optionally, providing a chelating agent; providing a solvent; adding th...
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WO/2019/187407A1 |
Provided is a novel use application of 5-methyl-2-hexanone. An extraction agent for metals contains 5-methyl-2-hexanone as an active ingredient, and can be used for the extraction of a chlorine complex or a fluorine complex of a metal ca...
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WO/2019/188708A1 |
Provided is a method for recovering a platinum group element from a water-soluble polymer on which a platinum group element is adsorbed, wherein the method is provided with a preparation step for preparing a hydrochloric acid aqueous sol...
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WO/2019/165560A1 |
A method of selectively oxidizing one or more target metals in an alloy comprising target and non-target metals is provided. The method comprises the steps of: i) melting the alloy and exposing the molten alloy to simultaneous fragmentat...
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WO/2019/155397A1 |
The present invention provides systems and methods for treating liquids including contaminant molecules dispersed therein by combining physical treatment, biological treatment and/or chemical treatment.
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WO/2019/151351A1 |
Provided is a processing method for electronic/electric device component waste by which it is possible to increase the amount of electronic/electric device component waste that can be processed in a smelting step, and by which valuable m...
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WO/2019/150198A1 |
Materials and methods for precious metal recovery are disclosed. An aqueous-based leaching solution is disclosed comprising an iodide salt material; an iodate salt material, a chlorite salt material, or any combination thereof; and phosp...
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WO/2019/145058A1 |
A process for the recovery of precious metal (PM) from PM oil, the process including combustion of PM oil within a furnace, where the PM oil is burned in atomized form.
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WO/2019/138307A1 |
The present disclosure relates to a process for the extraction of palladium from basalt. The process of the present disclosure is simple, economical and environment friendly.
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WO/2019/131946A1 |
The present invention provides a method for recovering gold and a gold recovery facility, which are capable of efficiently recovering gold from a solution that contains a gold cyano complex even in cases where the concentration of the go...
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WO/2019/128863A1 |
A method for circulated chloridized enrichment of noble metals from circuit board molten pool smelted flue dust. The smelted flue dust is subjected to acid extraction, and calcined two times to obtain calcined sands and flue gas, the cal...
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WO/2019/120368A1 |
The invention relates to a process, a unit and a gold and/or silver extraction unit for improving the yield in a sorption-leaching process (10) for extracting precious metals, in which the efficiency of the process is limited in particul...
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WO/2019/113059A1 |
Systems and methods for the recovery of silver are generally described. Certain embodiments are related to innovations newly developed within the context of the present invention that exploit the ability of elemental silver (i.e., silver...
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WO/2019/087193A1 |
A method for recovery of gold from gold-containing materials, such as electronic waste material, minerals and sands is described. The method includes crushing the gold containing material to obtain a particulate material. The particulate...
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WO/2019/078735A1 |
The invention relates to a method for recovering precious metals from electronic waste. In particular, biometallurgical techniques are utilised during the process. In a first aspect, the invention provides a method of recovering one or m...
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WO/2019/071797A1 |
A method for producing mixed slag containing nickel and iron, comprising the following steps: S1. furnace slag mixing: adding nickel smelting slag into a reaction apparatus, and adding one or more of lead smelting slag, blast furnace sla...
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WO/2019/071795A1 |
A manufacturing method using a copper-containing slag, comprising the following steps: S1, slag mixing: putting a copper slag into a reaction device and adding calcium-based minerals and additives, heating the slag into a molten state an...
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WO/2019/071788A1 |
A manufacturing method using a copper and iron containing mixing slag. The manufacturing method comprises the following steps: S1, slag mixing: putting a copper slag into a smelting reaction device, adding one or more of a lead smelting ...
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