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Matches 251 - 300 out of 3,922

Document Document Title
WO/2012/031194A3
Methods and compositions are described for preparing metal salts and selectively separating metals from substrates and other metals. The methods can include a thionyl reagent that reacts with a metal in a solution to produce a metal salt...  
WO/2012/024603A3
Processes for recycling electronic components removed from printed wire boards, whereby precious metals and base metals are extracted from the electronic components using environmentally friendly compositions. At least gold, silver and c...  
WO/2012/024603A2
Processes for recycling electronic components removed from printed wire boards, whereby precious metals and base metals are extracted from the electronic components using environmentally friendly compositions. At least gold, silver and c...  
WO/2012/012011A1
A process for the recovery of metals (hereinafter PM) from solids includes dissolving the PM and base metals in acid. The PM are precipitated using substituted quaternary ammonium salts (hereinafter SQAS). The PM may be oxidized or reduc...  
WO/2012/008453A1
Disclosed is a rotary kiln provided with a rotary furnace in which an object to be treated containing a metal is burnt, an electric furnace which is connected to the rotary furnace via a connecting portion and which separates the metal f...  
WO/2011/160179A1
A method (10) for the pretreatment and separation of metals from cyanide containing solutions, the method characterised by the step of: directing a feed stream (12) containing cyanide, particulate matter and metal values to a pre-treatme...  
WO/2011/161597A1
A process for upgrading a precious metals-containing concentrate or residue results in near-quantitave removal of base metals and several impurity elements at elevated temperatures. The precious metals- containing concentrate or residue ...  
WO/2011/156861A1
A method of recovering a metal, such as a noble metal, from an impure source material by contacting the source material with a leach solution comprising a metal halide, an oxidant and an acid. The leach solution containing the target met...  
WO/2011/154607A1
A process for recovering gold from gold-bearing raw material is provided. The method comprises a step of leaching the raw material in leach solution comprising thiosulphate anions and trace amount of thallium ions.  
WO/2011/154603A1
The invention relates to a method for recovering gold by solvent extraction from an acidic chloride-containing aqueous solution or from slurry containing gold-bearing solids using a diester-based reagent that is poorly soluble in water a...  
WO/2011/150984A1
Method for the recovery of noble metals comprising the steps of subjecting ore particles to an electrolytic bath (1) enhanced by an ultrasonic bath (2), the electrolytic bath (1) comprising heavy and/or semi-heavy water; shock heating th...  
WO/2011/147151A1
A method for non-cyanide recycling waste circuit board (1), comprises the following steps: mechanical crushing (2) waste circuit board (1), separating crude copper powder (4) from nonmetal powder through gravity separation (3), smelting ...  
WO/2011/145760A1
In the circulation of electrolyte in a vertical-cylinder-type electrolyzer having a three-dimensional filling cathode made of active carbon granules and a fixed granular catalyst layer, the leaching and precipitation of a precious metal ...  
WO/2011/140593A1
There is provided a process for extracting platinum group metals from a platinum group metal-containing material, in particular spent automotive catalyst. The process involves roasting said material under oxidative conditions and further...  
WO/2011/139436A1
A system for processing ores is provided. The system includes a bubble collapse mill and a control system that interacts with an external system to evaluate and manipulate the processing of an ore.  
WO/2011/135184A1
A method for recovering valuable metals, such as lead, silver and gold from the residue of an electrolytic zinc process, wherein the residue from the zinc process is suspended and sulfidized for converting the lead and silver compounds i...  
WO/2011/135991A1
Disclosed is a valuable metal recovery method that has excellent valuable metal selectivity and recovery efficiency, and furthermore is capable of reusing materials that were used in the recovery of a valuable metal. The valuable metal r...  
WO/2011/132740A1
Disclosed is a system and method for recycling rare metals, which separates and collects rare metals by making use of chemical actions in an efficient combination of adsorption and separation, thereby reducing work load and improving wor...  
WO/2011/130790A1
A method of smelting a gold rich source material in a crucible comprising: i) adding a fluxing agent to the crucible; ii) heating the fluxing agent in the crucible to provide an initial molten fluid pool of fluxing agent in the crucible;...  
WO/2011/128061A1
The invention relates to a treatment and use involving a metal scavenger, such as functionalised organic or inorganic material, and a process to selectively remove specific metal ions and complexes from a stream containing a range of met...  
WO/2011/100821A1
The present invention relates to a process and system for recovery of gold from an ore comprising the steps of i) providing the ore containing the gold to be recovered, ii) leaching the ore in an oxidative chloride medium, comprising a n...  
WO/2011/090102A1
Disclosed is a means for efficiently collecting a platinum-group element by efficiently enriching the platinum-group element in a molten copper phase produced from a copper-iron scrap containing the platinum-group element. Specifically d...  
WO/2011/091231A1
A mineral processing facility is provided that includes a cogen plant to provide electrical energy and waste heat to the facility and an electrochemical acid generation plant to generate, from a salt, a mineral acid for use in recovering...  
WO/2011/056576A3
Disclosed is a system for removing metals from waste, particularly electronic waste (or "e- waste"). The process generally includes the steps of dissolving at least some of the metals from the wastein a nitric acid bath and then causing ...  
WO/2011/056548A3
Disclosed is a process and system for removing metals from waste, particularly electronic waste (or "e- waste"). The process generally includes the steps of dissolving in nitric acid at least some of the metals from the waste and then ca...  
WO/2011/021696A1
Provided are a palladium ion adsorbent for solid-liquid adsorption which has both the extraction performance and selectivity of a palladium extractant for liquid-liquid extraction used in conventional solvent extraction methods and which...  
WO/2011/010289A2
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/2011/010289A3
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...  

Matches 251 - 300 out of 3,922