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Matches 251 - 300 out of 3,340

Document Document Title
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/2008/100163A1
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/2008/081324A2
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/2008/081324A3
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/2008/075933A1
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/2008/032288A3
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/2008/032288A2
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/2008/030106A1
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/2008/022986A3
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/2008/022986A2
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/2008/013479A2
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/2008/006901A1
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/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/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...  
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...  
WO/2007/138345A1
A process for making high metal content stabilised metal nanoparticles, comprises decomposing at least one metal acetylide in the presence of a first solvent under reducing conditions to yield a metal colloid solution and then recovering...  
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...  
WO/2007/118257A2
Small magnetic particles are introduced into a solution which is subjected to a bioleaching process. The suspended particles are coated with a substance which has a selective affinity for, and which interacts with, a metal in the solutio...  
WO/2007/115399A1
A method for recovering precious metals such as gold and silver from aqueous solution as solid is described The method includes mixing an aqueous solution (e.g, thiosulfate or thiocyanate lixiviant) containing precious metals with ferrou...  
WO/2007/118257A3
Small magnetic particles are introduced into a solution which is subjected to a bioleaching process. The suspended particles are coated with a substance which has a selective affinity for, and which interacts with, a metal in the solutio...  
WO/2007/109841A1
The present invention relates to an improved method for the recovery of metal values, in particular copper and gold, from a metal value-bearing material containing arsenic and/or antimony and a source of sulphate ions, by means of a high...  
WO/2007/107792A1
A method is described for producing highly stable silver colloidal solu- tions by reducing silver nitrate with lithium citrate. In the method, the main steps consist of: (a) heating a first quantity of water to a first predetermined temp...  
WO/2007/108984A3
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/2007/104106A1
A trench leaching system (10, 10') including a tank (14) containing a charge of ore (50) flooded with a liquid solvent (94) up to the level of a gutter (90). A pump (42) recirculates the liquid solvent (94) upwardly through the charge of...  
WO/2007/099536A3
An efficient process for purification of palladium from a palladium and rhodium mixture is described, which is based on the difference in uptake of the two metals into a strong anion exchanger polymer, e.g., a copolymer of polystyrene an...  
WO/2007/099365A1
A process for re-processing of a Fischer-Tropsch catalyst is described comprising the steps of; (i) de-waxing the Fischer-Tropsch catalyst, (ii) subjecting the de-waxed catalyst to hydrometallurgical leaching or extraction to separate ca...  
WO/2007/099536A2
An efficient process for purification of palladium from a palladium and rhodium mixture is described, which is based on the difference in uptake of the two metals into a strong anion exchanger polymer, e.g., a copolymer of polystyrene an...  
WO/2007/098603A1
A process for extracting gold from a gold-bearing ore. The process includes, first, providing a leaching liquor with thiosulfate anion and ethylenediamine. Next, the leaching liquor is contacted with the gold-bearing ore to form a pregna...  
WO/2007/098613A1
A recovery process for at least one precious metal contained in an ore, includes: comminuting the ore to obtain particles smaller than a predetermined particle size; separating the particles into at least two groups, each group being cha...  
WO/2007/093666A1
The invention relates to a method for recovering gold in connection with the hydrometallurgical production of copper from a waste or intermediate product containing sulphur and iron that is generated in the leaching of the copper raw mat...  
WO/2007/090725A1
The present invention relates to solutions comprising water and at least one metal cyanide, with at least part of the water being obtained from wastewater which arises as depleted wastewater in a process for the winning of noble metals f...  
WO2006069738A8
The invention relates to a composition for cyanide lixiviation, comprising at least one non-ionic surfactant, and to a method for the production of metals using the above-mentioned composition.  
WO/2007/080648A1
A method of noble-metal separation/recovery by which noble metal ingredients can be efficiently isolated by a simple procedure using an easily available adsorbent and eluent. The method comprises passing through a cellulose column a meta...  
WO/2007/081243A2
The invention can be used for extracting precious metals (platinum, palladium, gold, etc) from different mineral raw materials containing chlorides of alkali and alkali-earth metals, for example a bulk concentrate obtainable from clay-sa...  
WO/2007/081243A3
The invention can be used for extracting precious metals (platinum, palladium, gold, etc) from different mineral raw materials containing chlorides of alkali and alkali-earth metals, for example a bulk concentrate obtainable from clay-sa...  
WO/2007/080963A1
A method for separation and recovery of noble metals which makes it possible to isolate noble metal components efficiently by easy operation, that is, a method which comprises passing a solution of metals in hydrochloric acid prepared by...  
WO/2007/074129A1
The invention relates to a method for recovering ruthenium from a used ruthenium-containing catalyst which contains ruthenium as ruthenium oxide on a carrier material that is difficult to dissolve in mineral acid. Said method comprises t...  
WO/2007/065154A3
The invention provides an aqueous solution-based method for producing nanosized silver platelets, which employs the controlled mixing of a silver ion solution, a reducing solution, and an acidic solution in the presence of palladium ions.  
WO/2007/053947A1
Precious metal recovery by thiosulfate leaching where thiosulfate lixiviant is generated in situ employing elemental sulfur generated from partial oxidation of sulfidic precious metal-bearing feed and/or employing reactants from processi...  
WO/2007/045034A1
A method for the recovery of metal values from a metal value-bearing material containing arsenic and/or antimony and a source of sulphate ions such as sulphide ore or concentrate is disclosed. In one form the method comprises the steps o...  
WO/2007/039665A1
The invention relates to a method for processing a nickel product from nickel- bearing sulphidic raw materials, such as nickel sulphide concentrate or ore. According to the invention, the raw material is leached in atmospheric conditions...  
WO/2007/036334A3
The inventive recycling oven for treating explosive materials containing precious metals with organic portions, the combustion of which is associated with important energy release, comprises a switching device for alternating the a combu...  
WO/2007/036334A2
The inventive recycling oven for treating explosive materials containing precious metals with organic portions, the combustion of which is associated with important energy release, comprises a switching device for alternating the a combu...  
WO/2007/029128A1
This invention relates to a novel fire assay flux composition including, inter alia, a dispersant in the form of a source of phosphate; a primary reductant in the form of iron powder comprising particles having a particle size of 60 mesh...  

Matches 251 - 300 out of 3,340