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Matches 251 - 300 out of 3,488

Document Document Title
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...  
WO/2008/062785A1
Disclosed is a method for recovering ruthenium from a solid, wherein a ruthenium compound is supported by a carrier, with good recovery yield. Specifically disclosed is a method for recovering ruthenium, which is characterized by compris...  
WO/2008/059770A1
It is an object of the present invention to collect a scarce metal such as iridium from a light-emitting element which is no longer used. A method for collecting a metal is provided in which an organic metal compound which can emit visib...  
WO/2008/047010A2
The invention relates to a method for treating waste containing precious metals, said method comprising the following successive steps: the waste is brought into contact with a composition based on molten lead; the mixture obtained is sk...  
WO/2008/047010A3
The invention relates to a method for treating waste containing precious metals, said method comprising the following successive steps: the waste is brought into contact with a composition based on molten lead; the mixture obtained is sk...  
WO/2008/036820A3
A method of oxidizing carbonaceous ores to assist in the recovery of metals is provided. The method includes the steps of heating a bed of carbonaceous ore in the reaction chamber of a reactor vessel, using microwave energy to initiate a...  
WO/2008/032288A2
The invention relates to a process for the pre-treatment of feed to a non-stirred surface heap leach bioreactor by applying in sequence first and second pre-treatment solutions to a feed to a non-stirred surface heap leach bioreactor, in...  
WO/2008/032288A3
The invention relates to a process for the pre-treatment of feed to a non-stirred surface heap leach bioreactor by applying in sequence first and second pre-treatment solutions to a feed to a non-stirred surface heap leach bioreactor, in...  
WO/2008/030106A1
This invention relates to a method and device for catchment of platinum group metals (PGM) in a gaseous stream, where the method comprises using a catalyst comprising a porous ceramic body in which at least a part of the surface area is ...  
WO/2008/022986A2
The invention relates to a process for the recovery of metals from electronic components which comprise at least one full-area or structured metallic coating on a substrate, with the at least one full-area or structured metallic coating ...  
WO/2008/022986A3
The invention relates to a process for the recovery of metals from electronic components which comprise at least one full-area or structured metallic coating on a substrate, with the at least one full-area or structured metallic coating ...  
WO/2008/013479A2
The invention relates to low-waste hydrometallurgy of precious metals, in particular to a method for refining precious metals and can be used for increasing the ratio of extraction of precious metals from alloys and to improve the purity...  
WO/2008/013479A3
The invention relates to low-waste hydrometallurgy of precious metals, in particular to a method for refining precious metals and can be used for increasing the ratio of extraction of precious metals from alloys and to improve the purity...  
WO/2008/006194A3
A process for the production of a purified PGM selected from the group consisting of platinum and rhodium from an impure PGM source, the process comprising (a) obtaining an anhydrous PGM halide from the impure PGM source; (b) treating th...  
WO/2008/006901A1
The present patent describes a method for the recovery of noble metals from materials to recycle or intended for disposal and specifically from electric and electronic material discards. The method is mainly directed to the recovery of g...  
WO/2007/143807A1
The invention provides a recycling step in an oxidative pressure leaching process for recovery of metals using halide ions, in which a portion of the leached solids are recycled back to the feed to the autoclave, to allow two or more pas...  
WO/2007/137325A1
A process for recovering metals involving ion exchange comprising the step of recovering metal species from an ion exchange resin by elution of the resin with an eluent system containing (i) a first sulphite component comprising at least...  
WO2006039380A8
This invention relates to a composition of matter comprising predominantly silver metal microribbons, wherein the microribbons are at least 1 micron in length x 0.1 to 0.5 microns in width x 0.05 to 0.5 microns in height. It further rela...  

Matches 251 - 300 out of 3,488