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Matches 301 - 350 out of 3,911

Document Document Title
WO/2012/051652
A method for selectively removing arsenic from a solid sulphide material containing arsenic comprises the steps of conducting a leaching step by contacting the solid material with a leaching solution that leaches arsenic from the materia...  
WO/2012/053614
A copper concentrate treatment method characterized by comprising: a roasting step of roasting an enargite (Cu3AsS4) or a copper concentrate mainly composed of an enargite at 550-700°C in an inert gas atmosphere; and a leaching step of ...  
WO/2012/050317
Valuable metals such as cobalt, nickel, manganese, and lithium can be economically recovered from various lithium secondary battery-related wastes by the inventive method which comprises liquid-phase leaching a scrap powder containing Co...  
WO/2012/050317
Valuable metals such as cobalt, nickel, manganese, and lithium can be economically recovered from various lithium secondary battery-related wastes by the inventive method which comprises liquid-phase leaching a scrap powder containing Co...  
WO/2012/049361
The invention relates to a method for treating a solution containing zinc sulphate, so that at least one of the rare metals such as indium, gallium and germanium can be separated from it. A portion of the metals to be separated can be pr...  
WO/2012/047711
The present invention relates to a method and article for manipulating an amount of organic material entrained in an aqueous phase of a solvent extraction process. The method includes estimating an interfacial shear stress between an aqu...  
WO/2012/044858
A process for treating waste includes reacting a feedstock in a reactor to form an effluent. The feedstock is part of a reaction mixture that includes sulfuric and nitric acid. The effluent is separated into a liquid fraction and a solid...  
WO/2012/042714
To provided a method for recovering lithium from a lithium ion battery using comparatively simple equipment and without using a cumbersome process. A lithium extraction method for extracting lithium from the positive electrode material o...  
WO/2012/040868
The invention relates to an electronic inductive heating system for bioleaching and electrowinning plants at high altitude for heating fluids, said system comprising a DC/DC converter that controls the power entering an autoresonant inve...  
WO/2012/040829
Zinc and lead are usually concomitantly present in Zn-Pb ores and tailings. A novel non-polluting hydrometallurgical process for selectively leaching and recovering zinc (Zn) from a composite lead (Pb) and zinc sulphide containing minera...  
WO/2012/035207
The invention relates to a mixing device and method by means of which two solutions that are insoluble or poorly soluble in each other are mixed together into a dispersion. The device consists of at least three helical bars rotating upwa...  
WO/2012/034202
The present invention refers to a method to remove organic chemicals and organometallic complexes (organic heavy metal complexes) using zeolite from process water or tailings streams of a mineral processing plant where diethylenetriamine...  
WO/2012/031317
A heap of a material to be leached to recover a valuable metal from the material and a method of constructing the heap are disclosed. The heap comprises sides and a top and a system to control air flow into the heap. The air flow control...  
WO/2012/033077
[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/2012/024744
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/2012/024744
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/2012/026061
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/2012/019265
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/2012/019383
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/2012/016511
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/2012/016513
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/2012/014685
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/2012/006935
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/2012/005545
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/2012/005545
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/2012/005548
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/2012/005545
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/2012/005548
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/2012/005182
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/2012/005183
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/2012/000090
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/2012/001501
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/2011/162254
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/2011/160578
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/2011/160575
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/2011/161671
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/2011/160179
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/2011/156861
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/2011/154603
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/2011/150584
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/2011/151521
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/2011/147868
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/2011/147867
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/2011/147871
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/2011/143764
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/2011/143689
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/2011/145644
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/2011/145688
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/2011/145760
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/2011/140593
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...  

Matches 301 - 350 out of 3,911