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Matches 251 - 300 out of 3,824

Document Document Title
WO/2011/010289A3
This invention relates to a process for the recovery of precious metal/s from a precious metal-containing material in an aqueous leach slurry or solution. The process includes the step of contacting the precious metal/s in the leach slur...  
WO/2011/008825A1
The present invention generally relates to a formulation created by reacting sodium hydroxide, water, and silicon metal which has unique properties and many uses. The present invention further relates to the separation of fine particle g...  
WO/2011/000051A1
A method of recovering gold from a gold containing source material comprising: forming a molten pool comprising at least one metal selected from the group consisting of copper, silver, gold and platinum group metals; and adding at least ...  
WO/2010/151652A1
A carbon adsorption vessel for use in a CIP (carbon in pulp) or CIL (carbon in leach) process may be constructed. A slurry is obtained having dissolved (leached) precious metals. The slurry is brought into contact with carbon particles a...  
WO/2010/140701A1
Disclosed is a method for metal recovery using plants. The aforementioned metal recovery method involves bringing protonemata from moss plants belonging to the family Funariaceae into contact with a metal-containing solution in which is ...  
WO/2010/138094A1
The invention relates to a method and devices for extracting gold from placer deposits and ores. According to the present invention, a gold-containing pulp is prepared using an absorbent prepared from liquid hydrocarbons, wherein the den...  
WO/2010/130388A1
This disclosure concerns the recovery of PGM (platinum group metals) from spent homogeneous catalysts present in an organic phase. Specifically, a pyrometallurgical process is provided whereby the PGM, and Rh in particular, are concentra...  
WO/2010/121317A1
The invention involves a method for recovering gold from a gold concentrate comprising: dissolving gold from the concentrate in an aqueous liquor to provide a gold liquor; subjecting the gold liquor to electrolysis in an electrowinning c...  
WO/2010/121318A1
A method is disclosed for recovering precious metals from source materials containing precious metals which involves leaching the source material in aqueous reducing liquor to provide a treated solid residue and processing the treated re...  
WO/2010/121329A1
An improved method for recovering refractory gold from a material comprising treating the material to at least partially remove nitric acid-insoluble lead moieties.  
WO/2010/116167A1
The present invention relates to a process for dissolving metals in perhalide containing ionic liquids, and to the extraction of metals from mineral ores; the remediation of materials contaminated with heavy, toxic or radioactive metals;...  
WO/2010/109191A1
The invention relates to a method for increasing the concentration of platinum group metals in urban waste material. The method comprises obtaining particles of urban waste material; screening the particles of urban waste material by siz...  
WO/2010/105299A1
A method and ionic liquid for the electrorecovery of metal from a metal salt including at least one metal ion. The method includes the steps of dissolving the metal salt in an ionic liquid, the ionic liquid including an ionic liquid cati...  
WO/2010/107585A1
The invention provides a novel process for improving the recovery of precious metals from recalcitrant refractory ores by the use of hydrofluoric acid dissolved in ionic liquids. The solution of hydrogen fluoride gas in an ionic liquid i...  
WO/2010/087464A1
A microwave smelting furnace has a starting material feed opening at the top of a vertical furnace body, and a hearth member that can move up and down is provided in a hearth section. A microwave irradiation chamber that connects with th...  
WO/2010/084364A1
The method according to the invention consists recovery noble-metals by removing the layer containing catalytically active noble-metal from the surface of the substrate by means of selective powdering, and separating the fine powder enri...  
WO/2010/080050A1
The invention relates to hydrometallurgy and can be used for extracting precious metals (palladium, platinum, gold and silver) from different types of raw mineral materials. The method for the sorptive extraction of precious metals from ...  
WO/2010/076297A3
The invention relates to a method for recovering ruthenium from a spent ruthenium-containing catalyst which contains ruthenium in the form of ruthenium oxide on a support material that is poorly soluble in mineral acid. Said method compr...  
WO/2010/076030A1
This disclosure concerns a process for the recovery of PGM from the cobalt-based, PGM-bearing alloys that are typically obtained after smelting spent GTL catalysts. The process comprises the steps of: - powdering the alloy to a mean part...  
WO/2010/074294A1
Disclosed is a method for manufacturing a composition containing a platinum group metal, said method including a first step wherein a nitrile compound and a solution containing platinum group metal ions and a heteropoly acid are mixed to...  
WO/2010/058188A1
The present invention relates to a method, and apparatus for the recovery of precious metals. Accordingly, it provides a continuous process for obtaining a precious metal composition from a feedstock material, the process comprising the ...  
WO/2010/058188A9
The present invention relates to a method, and apparatus for the recovery of precious metals. Accordingly, it provides a continuous process for obtaining a precious metal composition from a feedstock material, the process comprising the ...  
WO/2010/041525A1
Disclosed is a composition for use in the collection of a metal component from a metal-containing material, which comprises a compound containing at least one element selected from the group consisting of lanthanoid elements and elements...  
WO/2010/037169A1
This invention relates to a process for extraction of mined material including the steps of draining liquid from the mined material, and adding metal-binding particles to the drained liquid. The process is particularly well adapted for e...  
WO/2010/036142A1
The invention relates to methods for the recovery of noble metals and can be used to recover noble metals from mineral raw materials containing chlorides of alkali and alkaline-earth metals, such as potash production slurries. The metho...  
WO/2010/036143A1
The invention relates to methods for producing a bulk enrichment concentrate for extracting noble metals from clay-salt waste (slurries) from plants which process potassium-magnesium ores and rock salt. The method for producing a bulk c...  
WO/2010/036144A1
The invention relates to methods for extracting noble metals from raw material containing chlorides of alkali metals, for example slurries. The method involves processing cinder in two stages, secondary enrichment by flushing with water...  
WO/2010/024150A1
A process for producing a powder mixture of a noble-metal powder and an oxide powder is provided which comprises mixing a powder of the ammonium chloride salt of a noble metal with an oxide powder and subsequently roasting this mixed pow...  
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 ...  

Matches 251 - 300 out of 3,824