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Matches 651 - 700 out of 7,970

Document Document Title
WO/2012/033077A1
[Problem] To decompose hydrogen peroxide in a copper etching waste liquor that contains hydrogen peroxide at a high concentration, with high efficiency. [Solution] A method of treating a copper etching waste liquor containing hydrogen pe...  
WO/2012/026061A1
A valuable-metal recovery method for recovering metals from lithium-ion batteries without using cumbersome steps and using comparatively simple equipment. A positive-electrode material containing a lithium/transition-metal composite oxid...  
WO/2012/024744A3
A method for leaching copper and molybdenum from an ore, residue and/or concentrate containing such, in which more than 1% of the total molybdenum is present as a sulfide and in which more than 1% of the total copper is present as an oxi...  
WO/2012/024744A2
A method for leaching copper and molybdenum from an ore, residue and/or concentrate containing such, in which more than 1% of the total molybdenum is present as a sulfide and in which more than 1% of the total copper is present as an oxi...  
WO/2012/019265A1
A method for treating liquid effluents and recovering metals is described, which comprises the steps of: a) liquid effluent equalization; b) sulphide addition and precipitation of metals in the form of metal sulphides; c) solid/liquid se...  
WO/2012/019383A1
Disclosed is a method for recycling lead from waste glass containing lead, which comprises the following steps: mechanical crushing waste glass containing lead, ball milling and screening to obtain glass powder containing lead; alkaline ...  
WO/2012/016511A1
A process for in-situ leaching of ion-adsorption rare earth by liquid injection comprises setting up a liquid injection network having liquid injection shallow wells and liquid injection deep wells distributed at intervals; during the li...  
WO/2012/016513A1
An in situ leaching liquid collection process with secondary channels comprises:1) multiple liquid collection channels are provided in an ore body; 2) secondary channels are provided at both sides of the liquid collection channels, the m...  
WO/2012/014685A1
Provided are: a process for producing ferronickel from a nickel sulfide material produced by a wet refining of a lateritic nickel ore or a scrap or a work-in-process material or from a mixed sulfide material containing nickel and cobalt....  
WO/2012/006935A1
Provided is a method for producing mercury-free alkaline-manganese type electrolyzed manganese dioxide, which sequentially comprises: (1) mixing manganese oxide ore and pyrite, continuously feeding the mixture and sulfuric acid into a co...  
WO/2012/005548A2
The present invention relates to a method of economical extraction of magnesium, boron and calcium, while minimizing the loss of lithium, from a lithium bearing solution. More specifically, the present invention provides a method for eco...  
WO/2012/005182A1
A rare earth metal extractant containing, as the extractant component, dialkyldiglycol amide acid which is excellent in breaking down light rare earth elements is reacted in diglycolic acid (Xmol) and an esterification agent (Ymol) at a ...  
WO/2012/005183A1
A rare earth metal extractant containing, as the extractant component, dialkyldiglycol amide acid which is excellent in breaking down light rare earth elements is reacted in diglycolic acid (Xmol) and an esterification agent (Ymol) at a ...  
WO/2012/005545A4
The present invention relates to a method of extracting lithium from a lithium bearing solution. More specifically, the present invention provides a method of economical extraction of lithium from a lithium bearing solution by adding a p...  
WO/2012/005545A2
The present invention relates to a method of extracting lithium from a lithium bearing solution. More specifically, the present invention provides a method of economical extraction of lithium from a lithium bearing solution by adding a p...  
WO/2012/005545A3
The present invention relates to a method of extracting lithium from a lithium bearing solution. More specifically, the present invention provides a method of economical extraction of lithium from a lithium bearing solution by adding a p...  
WO/2012/005548A3
The present invention relates to a method of economical extraction of magnesium, boron and calcium, while minimizing the loss of lithium, from a lithium bearing solution. More specifically, the present invention provides a method for eco...  
WO/2012/000090A1
A method of recovering copper from chalcopyrite concentrate by chemical leaching, using pyrite and silver. The catalytic properties of pyrite in the chalcopyrite leaching process are significantly enhanced by pretreating the pyrite with ...  
WO/2012/001501A1
A method of recovering copper wherein a copper sulphide mineral is subjected to a chloride leach cycle, and then to a bioleach cycle in which the mineral is heated with a chloride-containing solution from the chloride leach.  
WO/2011/160575A1
A manufacturing system for producing electrolytic manganese metal by two-mining method is disclosed. The system is designed to solve the problems of the conventional reduction roasting process in producing electrolytic manganese using ma...  
WO/2011/161671A1
An aeration system for a bed of ore that is laid upon a basal layer has a gas source located upstream for supplying gas and aeration pipes that distribute the gas downstream to the bed. Each aeration pipe has spaced-apart gas emitters th...  
WO/2011/160179A1
A method (10) for the pretreatment and separation of metals from cyanide containing solutions, the method characterised by the step of: directing a feed stream (12) containing cyanide, particulate matter and metal values to a pre-treatme...  
WO/2011/160578A1
A method for producing electrolytic manganese metal by using two ores and apparatus thereof are disclosed. The method comprises the following steps: leaching in sulfuric acid (5), purifying to remove iron (7), deeply purifying (18) and e...  
WO/2011/162254A1
Disclosed are: a method for removing copper ions from a copper-containing nickel chloride solution, which can remove copper contained in the copper-containing nickel chloride solution with high efficiency; and a process for producing an ...  
WO/2011/156861A1
A method of recovering a metal, such as a noble metal, from an impure source material by contacting the source material with a leach solution comprising a metal halide, an oxidant and an acid. The leach solution containing the target met...  
WO/2011/154603A1
The invention relates to a method for recovering gold by solvent extraction from an acidic chloride-containing aqueous solution or from slurry containing gold-bearing solids using a diester-based reagent that is poorly soluble in water a...  
WO/2011/151521A1
A method and apparatus for converting an iron-bearing residue generated in the hydrometallurgical process that contains small amounts of soluble heavy metals into stable form be means of a neutralising agent. The residue is elutriated an...  
WO/2011/150584A1
A method for producing alumina from metallurgical materials containing aluminium, comprises the following steps: decomposing the metallurgical materials containing aluminium with sulphuric acid to obtain aluminum sulfate solution, purify...  
WO/2011/147867A1
Hydrometallurgical reactor provided in order to carry out an extraction of at least one first metal initially present in a first oxidation state in an aqueous phase comprising: a reaction vessel, provided in order to contain the aqueous ...  
WO/2011/147868A1
Cementation room comprising at least one cementation cell provided in order to carry out a cementation of at least one first metal in at least one first aqueous phase in contact with at least one second metal in the solid state comprisin...  
WO/2011/147871A1
The invention relates to a method for treating spent nuclear fuel which, among other advantages, does not require the operation of reductive back-extraction of plutonium. Said method can be used in particular in the treatment of uranium ...  
WO/2011/145644A1
Disclosed is a method that can reduce the production of substances adhering to the inner walls of reaction vessels, pipes, and the like without impairing the recovery rate of nickel, and that can reduce the frequency of performing operat...  
WO/2011/145760A1
In the circulation of electrolyte in a vertical-cylinder-type electrolyzer having a three-dimensional filling cathode made of active carbon granules and a fixed granular catalyst layer, the leaching and precipitation of a precious metal ...  
WO/2011/143764A1
A process for separating Co from Ni in an aqueous solution comprises subjecting the solution to extraction and using kinetic differences between Ni and Co in the extraction for achieving at least a partial separation of Co from Ni. This ...  
WO/2011/145688A1
Disclosed is a method for efficiently producing iron (III) ions from an acidic solution that contains iodide ions and iron (II) ions, while separating and recovering the iodine content. The method serves as a method for processing an aci...  
WO/2011/143689A1
A method (10) for the extraction and recovery of vanadium from its ores, the method (10) characterised by the steps of: (i) Acid leaching (12) of an ore containing vanadium and iron to extract vanadium and iron into solution; (ii) Passin...  
WO/2011/140593A1
There is provided a process for extracting platinum group metals from a platinum group metal-containing material, in particular spent automotive catalyst. The process involves roasting said material under oxidative conditions and further...  
WO/2011/138272A1
The present invention is directed to a process for obtaining titanium dioxide by the sulphate process, in which process a titanium-containing starting substance is digested with sulphuric acid in order to obtain a solids-containing diges...  
WO/2011/137268A1
A method for recovering tellurium from a module comprising cadmium telluride, comprises: contacting the module comprising cadmium telluride with an electrolyte solution at a pH greater than about 9; contacting a counter electrode with th...  
WO/2011/134402A1
Disclosed is a method for extracting gallium from fly ash, which comprises the following steps: crushing the fly ash and removing Fe by magnetic separation; then dissolving it by using hydrochloric acid to obtain hydrochloric acid leacha...  
WO/2011/135991A1
Disclosed is a valuable metal recovery method that has excellent valuable metal selectivity and recovery efficiency, and furthermore is capable of reusing materials that were used in the recovery of a valuable metal. The valuable metal r...  
WO/2011/134403A1
Disclosed is a method for extracting gallium from fly ash, which comprises the following steps: crushing the fly ash and removing Fe by magnetic separation, then dissolving it by using hydrochloric acid (2) to obtain hydrochloric acid le...  
WO/2011/130866A1
The invention relates to a lyophilized powder product for processes of bio-lixiviation or bio-oxidation of mixed or pure minerals, which includes a microbial consortium of microorganisms selected from groups of native microorganisms and/...  
WO/2011/132282A1
A lithium recovery device is provided with which, when lithium is separated and recovered, high-purity lithium can be efficiently recovered and which can be easily and cost-effectively scaled up to an industrial level. The lithium recove...  
WO/2011/132705A1
Disclosed is a treatment agent that can efficiently remove heavy metals from contaminated water by putting a treatment agent into contact with contaminated water, wherein the treatment agent comprises a compound — that reduces the pH o...  
WO/2011/132693A1
By means of installation improvements specifically in a liquid-storage tank from among sulfidation installations at which a sulfidation reaction is performed in the hydrometallurgy of nickel oxide ore, the present disclosures reduce the ...  
WO/2011/132729A1
Disclosed is a method for producing a crystalline iron arsenate starting material liquid that can efficiently separate copper and arsenic from smoke and ash generated by nonferrous smelting and can provide an arsenic solution that substa...  
WO/2011/132740A1
Disclosed is a system and method for recycling rare metals, which separates and collects rare metals by making use of chemical actions in an efficient combination of adsorption and separation, thereby reducing work load and improving wor...  
WO/2011/128061A1
The invention relates to a treatment and use involving a metal scavenger, such as functionalised organic or inorganic material, and a process to selectively remove specific metal ions and complexes from a stream containing a range of met...  
WO/2011/129395A1
Disclosed is a plant for wet smelting of laterite nickel ore which can minimize stops of a processing facility even in the event of a serious trouble in the processing facility, the processing facility requiring a great deal of preparati...  

Matches 651 - 700 out of 7,970