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Matches 1 - 50 out of 9,700

Document Document Title
WO/2019/175838A1
A process for controlling iron within a hydromet solution and/or removing iron from a hydromet solution containing a dissolved metal value comprises seeding the hydromet solution with a seed precipitate material comprising iron. Seeding ...  
WO/2019/174103A1
A method for producing nickel sulfate and cobaltous sulfate by purification of a laterite nickel ore sulfuric acid leaching solution and silica gel chelate resin, comprising: 1) grinding laterite nickel ores (limonite type, transition la...  
WO/2019/176175A1
Provided is a solvent extraction method capable of selectively separating magnesium from an acidic aqueous solution of sulfuric acid. This solvent extraction method is for extracting magnesium in an organic solvent by bringing an acidic ...  
WO/2019/178051A1
Materials and methods for precious metal recovery are disclosed. Usable leaching solutions may be aqueous based and include appropriate materials in sufficient quantities to solubilize and stabilize precious metals. Such materials typica...  
WO/2019/172392A1
Provided is a method for increasing Ni yield of a sulfide product and lowering iron grade F. This method comprises: step (S10) for subjecting a Ni/Co-containing aqueous sulfuric acid solution (1) to a sulfurization reaction with H2S gas ...  
WO/2019/168941A1
The present invention relates to the extraction of lithium from liquid resources such as natural and synthetic brines, leachate solutions from clays and minerals, and recycled products. For the extraction of lithium from the liquid resou...  
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...  
WO/2019/169185A1
The present invention relates to use of alkysulfonic acids, with optionally an oxidant peroxide to leach copper from copper sulfide minerals or copper concentrates, a dichromate oxidant or a nitrate oxidant, or a combination thereof.  
WO/2019/163284A1
Provided is a method for recovering highly pure scandium by effectively and economically efficiently removing iron from an acidic solution containing scandium while reducing loss. The scandium recovery method according to the present inv...  
WO/2019/161447A1
A process is described for the recovery of manganese sulphate and manganese oxides from manganese-bearing feedstocks, comprising leaching the feed material in sulphuric acid, followed by selective crystallisation of manganese sulphate he...  
WO/2019/161448A1
A method is disclosed for the recovery of nickel, copper and cobalt as pure salts from mixtures of these metals, and especially when the ratio of the individual metals to each other in the feed solution is less than five (5), and close t...  
WO/2019/163285A1
Provided is a more economical method for obtaining a concentrated scandium solution from an acidic solution containing scandium by means of an ion exchange treatment that uses a chelating resin. This method is suppressed in deterioration...  
WO/2019/160982A1
The present invention relates to the extraction of lithium from liquid resources, such as natural and synthetic brines, leachate solutions from clays and minerals, and recycled products.  
WO/2019/149293A1
The alunite ore processing method consists of crushing, grinding and flotation of raw alunite ore. The enriched alunite ore is roasted at 520 to 620 °C, the roasting time is 1 to 3 hours. The roasted alunite is leached with 5 to 20 % so...  
WO/2019/150005A1
The present invention relates to a process for processing a leach solution of black mass of spent alkaline batteries which leach solution (14) includes metals dissolved to an acidic solution and in which process one or more elements (49)...  
WO/2019/152738A1
An aluminum alloy composition is provided. The aluminum alloy composition may include from 20 to 600 ppm Fe and from 10 to 800 ppm Mn. A ratio of Fe (ppm)-to-Mn (ppm) in the aluminum alloy composition may be from 0.25:1 to 7:1.  
WO/2019/150403A1
The present invention concerns a method for treatment of lithium batteries and recovery of the metals contained therein comprising the following steps: - completely discharging the single cells by immersion in a conductive solid material...  
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...  
WO/2019/149698A1
The invention relates to a method for recycling lithium batteries, comprising the steps of: (a) breaking down a comminution product (10), which contains comminuted constituent parts of electrodes of lithium batteries, with concentrated s...  
WO/2019/146619A1
Provided is a method for obtaining high-purity scandium oxide efficiently from a solution containing scandium. The method for producing high-purity scandium oxide of the present invention has a first firing step S12 for subjecting a solu...  
WO/2019/148105A1
Provided is a liquid-liquid extraction process and apparatus for recovering an alkali or alkaline earth metal or other metal from a source solution such as geothermal brine.  
WO/2019/143264A1
The present method comprises dissolving a scandium-containing concentrate in a mineral acid, purifying the scandium solution, separating the precipitate, treating same with an alkaline agent, and separating the precipitate of scandium co...  
WO/2019/136792A1
A method for separating nickel and cobalt from a solution, comprising the following steps: after acid leaching the cathode material of a waste lithium ion battery, obtaining a solution containing nickel and cobalt; adjusting the pH value...  
WO/2019/137544A1
A method for extracting valent components in vanadium titanium magnetite by means of oxygen-rich selective leaching, comprising the steps of: (1) crushing vanadium titanium magnetite, placing same and a sodium hydroxide solution into an ...  
WO/2019/137714A1
The invention relates to a method for obtaining gold, silver and platinum group metals from starting materials. According to the invention, the starting materials are treated with a gaseous oxidising agent in an aqueous solution of iodid...  
WO/2019/137543A1
A method for preparing high-purity TiO2 by selectively leaching from titanium concentrate with rich oxygen, comprising the following steps: (1) crushing and activating titanium concentrate, placing the raw materials in an autoclave for a...  
WO/2019/138316A1
The invention provides a process for recovering copper (Cu) and cobalt (Co) from a copper–cobalt containing material sample, and which is adapted for treating both low and high grades of copper–cobalt source material, such as Cu-Co s...  
WO/2019/137542A1
A method for selectively leaching and upgrading high-titanium slag, which is carried out according to the following steps: (1) crushing high-titanium slag, and then placing the slag and a sodium hydroxide solution into an autoclave; (2) ...  
WO/2019/134185A1
A method for extracting and separating zirconium and hafnium from a nitric acid medium, mainly comprising: extracting an acid feed liquid of a zirconium compound by means of a synergic extraction system consisting of DIBK and a phosphoni...  
WO/2019/134184A1
A method for extracting and separating zirconium and hafnium from a hydrochloric acid medium, relating to the technical field of fine separation of substances. The method mainly comprises: extract acid liquid of a zirconium compound by m...  
WO/2019/126891A1
The present invention relates to copper mining, and particularly to a method for bioleaching copper sulfide minerals, preferably chalcopyrite, with a consortium of bacteria that oxidise iron and sulfur and are resistant to seawater.  
WO/2019/131832A1
This waste liquid treatment method has: an aluminum dissolution step for dissolving aluminum into an acidic waste liquid and performing separation into a first treatment water and a heavy metal reduction deposit; a gypsum recovery step f...  
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...  
WO/2019/131827A1
Provided is a waste liquid treatment method comprising: an aluminum dissolution step of dissolving aluminum in an acidic waste liquid and separating into a first treated water and a heavy metal reduced precipitate; a gypsum recovery step...  
WO/2019/128862A1
The present invention provides a method for pretreating incineration ash of a circuit board and recovering bromine, belongs to the field of comprehensive recovery of ash whole-wet valuable metals, and particularly relates to a method for...  
WO/2019/133554A1
The subject invention provides safe, environmentally-friendly, compositions and methods for extracting minerals and/or metals from ore. More specifically, the subject invention provides for bioleaching using a composition comprising one ...  
WO/2019/120649A1
The present invention relates to a process for recycling and reusing supported Pd membranes comprising the separation of the Pd (or Pd alloy) layer from the support by contacting the Pd membrane with hydrogen under pressure and at low te...  
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...  
WO/2019/122985A1
A method for the treatment of sludge containing iron, said method comprising - a leaching step wherein the sludge containing iron is mixed with an acid and an oxidation agent so as to create an oxidized leachate, and - a step of precipit...  
WO/2019/122301A1
Suggested is a process for recovering precious metals from secondary sources encompassing the following steps: (a) providing a secondary source selected from the group consisting of flow ashes, incineration ashes or their concentrates; (...  
WO/2019/123365A1
A method of maximising the amount of water available for rinsing in a high-chloride heap leach operation which includes the step of using process make-up water in the range of 0.05 to 0.35 m3 / ton of ore to rinse leach residue ore, in t...  
WO/2019/124819A1
A nickel ore drying device for nickel hydrometallurgy is provided. The nickel ore drying device for nickel hydrometallurgy, according to the present invention, comprises: a drying furnace for removing crystal water of nickel ore by raisi...  
WO/2019/123138A1
A method for the treatment of sludge containing iron, said method comprising - a leaching step wherein the sludge containing iron is mixed with an acid and an oxidation agent so as to create an oxidized leachate, and - a step of precipit...  
WO/2019/124015A1
Provided is a method for separating copper from nickel and cobalt, which can efficiently and selectively separate copper from nickel and cobalt in a substance containing copper, nickel, and cobalt in a waste lithium ion battery, etc. In ...  
WO/2019/123972A1
Provided is a production method whereby coarse particles of a so-called high-purity nickel powder, which contains a small amount of impurities and, in particular, has a low sulfur content, are formed from a nickel sulfate ammine complex ...  
WO/2019/123362A1
A method of controlling the acid balance in a high chloride heap leach process tomaximise the copper dissolution in a cure step and to increase overall copperrecovery which include an agglomeration stage in which acid and processsolution...  
WO/2019/119166A1
The present invention relates to the field of mining. Specifically, to a method for bioleaching minerals. Even more specifically, to a method for bioleaching sulfur-containing minerals using a consortium of microorganisms comprising iron...  
WO/2019/114816A1
The present invention relates to the technical field of wet metal and metallurgy, and provides an extraction method for a lithium element. The method comprises: mixing the lithium-containing solution with an extractive solvent to obtain ...  
WO/2019/117457A1
The present invention relates to a porous porphyrin polymer and a method for recovering noble metal elements by using the same, and a porous porphyrin polymer of chemical formula 1, having high selectivity and adsorptivity with respect t...  
WO/2019/109159A1
The focus of the invention is exclusively on ROM fractions of less than 50 microns from existing processes for recovering minerals, such as flotation, magnetic separation and gravity concentration, or for reprocessing waste product and s...  

Matches 1 - 50 out of 9,700