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Matches 251 - 300 out of 3,601

Document Document Title
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...  
WO/2009/001897A1
Disclosed is a novel separation reagent which has never exist before and can achieve a high extraction rate of rhodium in a chlorine-containing acid solution. Also disclosed is a method for the separation/collection of a platinum-group m...  
WO/2008/141443A1
A process for the extraction of a precious metal, such as gold or silver, from a sulphide ore or concentrate or other source material comprises subjecting the source material to pressure oxidation to produce a pressure oxidation slurry. ...  
WO2007108984B1
To produce metallic iron from iron ore, a composition comprising a mass of material formed from a mixture of iron ore particles and particles of a reductant that is either a biomass material in particulate form or a plastic resinous mate...  
WO/2008/131856A2
The invention relates to a method for the recovery of ruthenium in the form of ruthenium halide, in particular ruthenium chloride from a supported catalyst material containing ruthenium, comprising at least the following steps: a) chemic...  
WO/2008/131856A3
The invention relates to a method for the recovery of ruthenium in the form of ruthenium halide, in particular ruthenium chloride from a supported catalyst material containing ruthenium, comprising at least the following steps: a) chemic...  
WO/2008/122251A1
The suspensions of micrometer crystals of silver are prepared according to this invention by mixing a silver salt, advantageously silver nitrate (AgNO3), a reduction agent from a group of species containing -OH or -CHO functional groups,...  
WO/2008/100163A1
The subjects of the invention are a method of manufacturing silver nanoparticles of 1 to 350 nm in size, a method of manufacturing cellulosic fibers and nanofibers containing silver nanoparticles, fibers and nanofibers containing silver ...  
WO/2008/099747A1
Disclosed is a method for recovering a platinum group metal from a waste containing a platinum group metal such as iridium. This method comprises a step wherein an easily water-soluble chloride of a platinum group metal is obtained by re...  
WO/2008/099681A1
Disclosed is a material which enables to efficiently recover metal ions such as silver ions. Also disclosed are a method for producing such a material, a method for adsorbing metal ions by using such a material, and a method for recoveri...  
WO/2008/081324A3
The present invention is directed to a precious metal recovery process in which basic ferric sulphates and/or jarosites are controlled by hot curing of the autoclave discharge slurry followed by decomposition of argentojarosite using str...  
WO/2008/081324A2
The present invention is directed to a precious metal recovery process in which basic ferric sulphates and/or jarosites are controlled by hot curing of the autoclave discharge slurry followed by decomposition of argentojarosite using str...  
WO/2008/075933A1
The present invention relates to a procedure for preparation by a wet reduction method of nanometric particles of metallic silver, with diameter ranging from 1 to 100 nm and an average diameter of 20 to 40 nm, with monodispersion charact...  

Matches 251 - 300 out of 3,601