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Matches 251 - 300 out of 3,668

Document Document Title
WO/2010/021341A1
A method for recovering gold, which comprises a first step wherein a gold layer (12) of a composite material (10), wherein the gold layer is formed on a copper plate (11), is converted into an Au-Zn-Cu alloy layer (12a) containing zinc b...  
WO/2010/019064A1
According to the invention, the procedure and the device for extraction of platinum metals and their concentration from copper ores relates to extraction of solid materials through a subsequent concentrate treatment using flotation, and ...  
WO/2010/019062A1
According to this invention, a process for obtaining zinc, lead, gold and silver concentrate from a complex low - concentration ore. The process consists of several stages: three - staged basic grinding and two - staged classification, c...  
WO/2010/014500A1
Synthesis of nanoparticles with particle size control is provided by the method of using two different metal-containing precursors, a capping component, an optional reducing agent, and then contacting the two precursors with the capping ...  
WO/2010/014637A1
Embodiments related to recycling alkaline batteries are disclosed. In one disclosed embodiment, a method for recycling a battery having a basic electrolyte comprises rupturing the battery under anaerobic conditions and flooding the inter...  
WO/2010/003693A1
When producing calcine products by dead roasting of metal sulfide concentrate, in particular concentrate with a low sulfur content such as PGM sulfide concentrate, the concentrate is roasted in a circulating fluidized bed (1) at a temper...  
WO/2009/149590A1
An atmospherically catalyzing and oxidizing method of refractory gold concentrate with high arsenic and high sulfur, comprises ① adding predefined ore, solid catalyst, acid and water into reaction container with stirrers to form ore pu...  
WO/2009/149241A2
A method is provided for recovering a catalytic element from a fuel cell membrane electrode assembly. The method includes grinding the membrane electrode assembly into a powder, extracting the catalytic element by forming a slurry compri...  
WO/2009/149241A3
A method is provided for recovering a catalytic element from a fuel cell membrane electrode assembly. The method includes grinding the membrane electrode assembly into a powder, extracting the catalytic element by forming a slurry compri...  
WO/2009/135665A1
The present invention relates to a method for recovering rhenium from an ethylene oxide catalyst containing rhenium and at least silver on a solid support, wherein at least a substantial portion of the rhenium present in the catalyst is ...  
WO/2009/130345A1
The invention relates to a method for recovering gold using hollow-fibre membranes and dispersion-based back-extraction in the presence of one or more of the following metals: Zn, Ag, Ni, Fe and Cu, in an aqueous cyanide medium.  
WO/2009/130006A1
The present invention relates to a cyanide-free process of isolating precious metal gold from a particulate material containing said metal, comprising the following steps of (i) preparing an aqueous mixture containing said particulate ma...  
WO/2009/122240A1
Methods and apparatus for the recycling and purification of an inorganic metallic precursor. A first gaseous stream containing ruthenium tetroxide is provided, and transformed into a solid phase lower ruthenium oxide. This lower phase ru...  
WO/2009/120373A2
A process and composition for extracting metal from a metal-laden ore, soil or rock is provided A liquid, three-component aqueous lixiviant comprises water, an alkali metal salt and a low pH acidic composition A four-component aqueous li...  
WO/2009/113842A1
An improved process for leaching and recovering precious metals from materials and ores containing same by using ammoniacal thiosulphate solutions of copper with added EDTA, and performing direct selective electroseparation thereof from ...  
WO/2009/111076A3
A method is provided for recovering rhenium from a titania- supported, rhenium-containing catalyst by treating the catalyst in the reduced form with an acid in an amount and for a time sufficient to dissolve the rhenium without dissolvin...  
WO/2009/111076A2
A method is provided for recovering rhenium from a titania- supported, rhenium-containing catalyst by treating the catalyst in the reduced form with an acid in an amount and for a time sufficient to dissolve the rhenium without dissolvin...  
WO/2009/107647A1
A process for the recovery of metal which comprises heating a metal-containing material in the presence of a perovskite-type double oxide represented by compositional formula (1): ABHaO3-b (1) (wherein A is at least one element selected ...  
WO/2009/105832A1
The invention relates to a method for recovering gold from an acid digest of a gold-containing copper anode slime. The acid digest is selectively extracted with an alcohol having low miscibility with water. Gold is then recovered from th...  
WO/2009/108125A1
Gold nanoparticles are prepared by combining a gold salt, an N,N'-disubstituted imidazolium salt and a thiol.  
WO/2009/101926A1
Disclosed is a novel rare metal extracting agent. Also disclosed is a method for extracting/separating a rare metal with high efficiency. The rare metal extracting agent comprises a cyclic phenol sulfide derivative represented by general...  
WO/2009/094732A1
Process for recovering precious metals from catalytic carriers comprising at least the following stages : - Stage 1 : treatment of the carriers with at least one aqueous and/or alcoholic composition - Stage 2 : treatment of the carriers ...  
WO/2009/093730A1
A recovering method is provided, which includes contacting a solid component containing Ru with an aqueous solution to create a Ru compound, and causing the Ru compound to selectively elute in the aqueous solution. The aqueous solution i...  
WO/2009/092023A1
The present invention relates, generally, to a method and apparatus for recovering metal values from a metal-bearing materials, and more specifically, a process for recovering copper and other metals through leaching, electrowinning usin...  
WO/2009/091391A1
A pulse of over six kilovolts with a duration of 200 nanoseconds causes an explosion that fragments a mineral deposit with metals embedded therein. The fragmentation separates the metals from the mineral. A conditioning electromagnet tem...  
WO/2009/080522A1
The invention refers to a preparation method for nano- or microcrystals of Au, Pd, Pt or Ag comprising the steps of: a) preparing an ionic liquid mixture of cellulose and at least one metal salt selected form the group consisting of Au, ...  
WO/2009/076684A3
A method of recovering silver from a silver chloride mixture in which hydrogen gas is passed through the mixture to produce a metal chloride hydride which is then heated to dissociate the metal and to release hydrogen chloride gas.  
WO/2009/076684A2
A method of recovering silver from a silver chloride mixture in which hydrogen gas is passed through the mixture to produce a metal chloride hydride which is then heated to dissociate the metal and to release hydrogen chloride gas.  
WO/2009/072908A2
A system of gold recovery whereby the bulk waste component of a gold ore is removed by froth flotation and the resultant concentrate is then treated by conventional cyanide leaching procedures, characterized in that 96 - 98 % of gold fro...  
WO/2009/072908A3
A system of gold recovery whereby the bulk waste component of a gold ore is removed by froth flotation and the resultant concentrate is then treated by conventional cyanide leaching procedures, characterized in that 96 - 98 % of gold fro...  
WO/2009/069005A3
The present invention is directed to recovery of gold from refractory and double refractory ores using a fungal agent and/or culture media. The fungal agent is inoculated in the feed material to either decompose sulfide sulfur or deactiv...  
WO/2009/068735A1
The invention relates to a method for processing pyritic copper sulphide concentrate, in which, in addition to copper, there is arsenic and gold bound to the sulphide minerals, or invisible gold. In the method concentrate is leached into...  
WO/2009/067039A1
The inventive method for extracting precious metals from refractory ores and concentrates can be used in the hydrometallurgical industry for processing sulphide mineral raw materials. The method for extracting precious metals from refrac...  
WO/2009/063438A3
This invention relates to a method of removing cyanide in the form of free cyanide (cyanide ions i.e. CN') and weak acid dissociable cyanide (WAD) from an aqueous stream. WAD is cyanide complexed with metals such as Cu. The method finds ...  
WO/2009/063438A2
This invention relates to a method of removing cyanide in the form of free cyanide (cyanide ions i.e. CN') and weak acid dissociable cyanide (WAD) from an aqueous stream. WAD is cyanide complexed with metals such as Cu. The method finds ...  
WO/2009/037596A2
The present invention is directed to a precious metal recovery process in which carbonaceous material, such as preg robbing carbon, is floated after sulfide oxidation to separate the carbonaceous material from the precious metal.  
WO/2009/037595A3
A method for suppressing mercury dissolution during pressure oxidation of precious metal-containing materials in the presence of halogens and halides is provided. Pressure oxidation is performed under controlled oxidative conditions to m...  
WO/2009/037596A3
The present invention is directed to a precious metal recovery process in which carbonaceous material, such as preg robbing carbon, is floated after sulfide oxidation to separate the carbonaceous material from the precious metal.  
WO/2009/037594A2
The present invention is directed to flotation of refractory gold sulfide ores in which the ore is ground, floated, the tailings reground, and refloated to produce gold- bearing concentrates.  
WO/2009/037594A3
The present invention is directed to flotation of refractory gold sulfide ores in which the ore is ground, floated, the tailings reground, and refloated to produce gold- bearing concentrates.  
WO/2009/034482A2
In the process of recovering platinum group metals from platinum group metal-and base metal-containing materials, the present invention uses reductants and a sulfur- deficient matte to aide the separation of the furnace matte from the fu...  
WO/2009/034482A3
A method for recovering one or more platinum group metals (PGMs) comprising: (a) smelting, under reducing conditions, a feed material comprising one or more PGMs, base metals, iron, and chromium in the presence of a reductant to form a s...  
WO/2009/029463A1
The membrane electrode assemblies of fuel cells are recycled by pulverizing the membrane electrode assemblies into a powder by cryo-grinding and contacting with acid to leach precious metals. Surfactants can optionally be used to increas...  
WO/2009/023813A1
There rs provided a metals recover. s\ stem including at least one tank ha\ ing a top portion and a bottom portion, wherein the top portion has an inlet and sajd bottom portion has an outlet a process Quid cierh erv deuce in fluid commun...  
WO/2009/017136A1
A method of recovering catalyst metals from a catalyst containing a chalcogen element. The method includes: a chalcogen element ingredient removal step in which the electrode catalyst is heated in a hydrogen-containing inert gas to remov...  
WO/2009/018592A3
The invention provides an enrichment process for a PGM-group metals containing stream, said process including the steps of contacting activated carbon particles with a PGM-rich stream by contacting the stream with a batch of the particle...  
WO/2009/018592A2
The invention provides an enrichment process for a PGM-group metals containing stream, said process including the steps of contacting activated carbon particles with a PGM-rich stream by contacting the stream with a batch of the particle...  
WO/2009/017434A1
The invention relates to methods for recovering non-ferrous, rare, radioactive and precious metals from refractory mineral raw materials and can be used in production. The inventive method for recovering non-ferrous, rare, radioactive an...  
WO/2009/007911A3
This invention relates to a separating apparatus and a separation method for quantitative separation of molten collector material and a molten slag during a process of assaying mineral ore samples to determine the concentration of select...  
WO/2009/007911A2
This invention relates to a separating apparatus and a separation method for quantitative separation of molten collector material and a molten slag during a process of assaying mineral ore samples to determine the concentration of select...  

Matches 251 - 300 out of 3,668