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Patent Searching and Data


Matches 651 - 700 out of 3,171

Document Document Title
WO/2004/063404A1
Disclosed is an apparatus for rapidly making a noble metal solution using plasma. This apparatus includes a power charging unit for charging electric energy so as to evaporate and ionize a noble metal into plasma, and a pulse energy appl...  
WO/2004/059018A1
A process for recovering a precious metal from a sulfidic material comprises the steps of preparing an acidic aqueous halide solution having an oxidation potential sufficient to oxidise the sulfidic material and render the precious metal...  
WO/2004/056468A1
This invention relates to a method for the thermal treatment of granular solids in a fluidized bed (3, 3a) which is located in a fluidized-bed reactor (1, 1a), wherein microwave radiation is fed into the fluidized-bed reactor (1, 1a) thr...  
WO/2004/056471A1
This invention relates to a method for the thermal treatment of granular solids in a fluidized bed (3, 3a) which is located in a fluidized-bed reactor (1, 1a, 38), wherein microwave radiation is fed into the fluidized-bed reactor (1, 1a,...  
WO/2004/050927A1
A method for separating a platinum group element which comprises a step (A) of treating a material containing a platinum group element and one or both of selenium and tellurium with an alkali, a step (B) of leaching selenium and/or tellu...  
WO/2004/050660A1
The present invention is directed to novel heteroatom containing tetracyclic derivatives, pharmaceuticalcompositions contianing them, their use in the treatment and/or prevention of disorders mediated by oneor more estrogen receptors and...  
WO/2004/050926A1
The present invention relates to a process for the recovery of precious metals from spent catalysts or adsorbent or inorganic waste. More specifically a process is provided for the recovery of palladium from silica, which is used as an a...  
WO/2004/048623A1
The present invention is directed to a method for the recovery of one or more trace elements including gold and one or more platinum group elements from coal (11). More particularly, the present invention may specify parameters for the s...  
WO/2004/046036A2
Processes are provided for recovering precious metals from refractory materials using thiosulfate lixiviants. The processes can employ heap leaching or lixiviants that include one or more blinding agents.  
WO/2004/042094A1
Precious metals such as gold can be extracted from a refractory ore using a conventional cyanide leaching step and with reduced cyanide consumption by pre-treating the ore prior to cyanide leaching. The refractory ore is pretreated by fi...  
WO/2004/035844A1
A process for extracting gold from arsenic-containing concentrate, including heat and keep the smelting chamber to a temperature of 100-300 °C under the reduced pressure lower than 50 Pa to remove the water vapor and some dust in the co...  
WO/2004/033734A1
A method of extracting amounts of precious metals from target materials. The target material in particulate form is mixed with particulate copper and coarse−ground wheat flour and roasted at least once in an induction furnace (220) . T...  
WO/2004/033735A1
The invention relates to a method for removing silver from a chloride solution in a copper recovery process. According to this method, silver is removed using fine-grained copper powder and mercury. Silver removal occurs in at least two ...  
WO/2004/029308A1
The invention relates to rear-metal metallurgy and can be used for efficient osmium extraction from copper production waste material. The inventive method consists in pre-distilling organic components in a reducing medium from initial ra...  
WO/2004/022796A1
Disclosed is a process for recovering components from a liquor containing a complex or compound electrochemically dissociable to form a cation (C) and an oxidisable species for recovery including: (a) delivering the liquor containing sai...  
WO/2004/022795A1
The process of the present invention recovers platinum group metal(s), such as platinum and palladium, from PGM-containing materials containing base metals, such as copper and nickel. The process controls sulfur levels by using solvent e...  
WO2004005557B1
The present invention relates to a process for separating at least one metal compound and/or a component thereof from a mixture, said process comprising contacting the said mixture with a heteropoly acid or heteropoly acid anion, thereby...  
WO2003087416A9
PGMs can be extracted from a source material by heat-treating the source material to form a residue containing PGMs in a cyanide leachable condition and, thereafter, cyanide leaching the resudue using a solution containing cyanide to for...  
WO/2004/013361A1
A dry method of recovering a platinum group element, comprising charging a substance containing platinum group element to be treated and a copper source material containing copper oxide together with a flux component and a reducing agent...  
WO/2004/005556A1
A process for leaching precious metals such as gold from an ore such as a sulphide ore, the process including the steps of milling an ore containing a precious metal to produce a milled ore, contacting the milled ore with water, an alkal...  
WO/2003/104503A1
Methods for inhibiting depletion of metal values from pregnant lixiviant solutions comprise contacting the requisite metal ore with a prep-robbing inhibition agent (PRIA) comprising one of: (I) alkyl polyglucoside surfactants; (II) imida...  
WO/2003/100412A2
The invention provides a novel method of treating a mineral sample comprising the steps of: introducing a comminuted mineral sample together with a flux into a reaction vessel, the flux including a collector agent adapted during fusion t...  
WO/2003/093515A1
A process for the chromatographic interseparation of rhodium in admixture with at least one base metal from a feed solution comprising complexes of these metals. The process comprises contacting the solution with at least one chromatogra...  
WO/2003/093516A1
The invention relates to a method for refining precious metal concentrate, and according to said method, at least the precious metal concentrate (9), reaction gas (10), flux (11) and flue dust (12) to be treated are fed together into the...  
WO/2003/091463A1
The invention relates to a method for the recovery of gold in connection with the hydrometallurgical production of copper from a residue or intermediate product containing sulphur and iron generated in the leaching of copper raw material...  
WO/2003/080879A1
The present invention relates to a process for the recovery of gold and silver from the used refractory bricks of Dore furnace. This invention particularly relates to a process for the recovery of gold and silver from the used refractory...  
WO/2003/078670A1
A method for separating a platinum group element, which comprises a step (A) subjecting a material containing a platinum group element and selenium and/or tellurium to a treatment with an alkali, a step (B) of leaching selenium and/or te...  
WO/2003/055598A1
This invention provides a method for recovering rhenium oxide from a material containing rhenium by itself or rhenium in combination with some other element, such as an element catalytically active for a catalytic process, such as hydrog...  
WO/2003/056043A1
The present invention was structured by the author to make feasible the industrial recovery of Platinum Group Metals-PGM and oth er noble metals through the processing of spinel minerals. The spinel minerals are rejected in phosphate, ti...  
WO/2003/045627A1
A system, workstation (100) and method for recovering noble metal from scrap generated during the manufacture of noble metal units. The method includes providing a cast metal unit such as a dental crown or a jewelry item. The unit is mad...  
WO/2003/046231A1
A method to enhance the extraction of an element from an ore includes subjecting the ore, or element bearing material to electromagnetic radiation to induce pyrolysis of the material. The residue of the pyrolysis may then be processed in...  
WO2003010345B1
The present invention is directed to a process for recovering metal values from metal-bearing materials. During a reactive process, a seeding agent is introduced to provide a nucleation site for the crystallization and/or growth of solid...  
WO/2003/033747A1
A method of separation and/or recovery of a precious metal from a solution containing said precious metal in ionic form, optionally in the presence of impurities, including the step of contacting a solution containing said precious metal...  
WO/2003/029501A1
The present invention provides an additive alloy consisting essentially of (7) percent to (45) percent by weight copper, (40) percent to (84.50) percent by weight zinc, and 0.1 percent to (4) percent by weight silicon, the alloy being fr...  
WO/2003/027339A1
A process for the recovery or removal of metal species from a solution or slurry comprising the steps of: contacting the solution or slurry with a poly(alkyleneimine) polymeric material to load the poly(alkyleneimine) polymeric material ...  
WO/2003/025234A2
The invention relates to a method for obtaining metals from a cobalt and/or nickel arsenic sulfide ore or ore concentrate and/or a cobalt and/or nickel sulfide ore or ore concentrate, according to which the cobalt and/or nickel arsenic s...  
WO/2003/020990A1
The invention relates to a method of transforming colloidal silver into ionic silver consisting in subjecting a medium containing the colloidal silver to the action of ultrasound. The invention also relates to a method of purifying a dev...  
WO/2003/010346A2
A process is disclosed for recovering platinum group metals from a spent catalytic member, and in particular, from a catalytic converter from an automobile. The process comprises comprising introducing the catalytic member (10) into a re...  
WO/2002/100563A1
A method for decomposing a material containing an organic substance as a waste which comprises incorporating the material containing an organic substance such into a molten metal (10) such as lead or aluminum to thereby decompose the mat...  
WO/2002/099144A1
A process for the selective removal of a least a portion of at least one precious metal in the form of a metal-cyanide complex from an ion-exchange resin to which the precious metal and at least one base metal-cyanide complex are bound, ...  
WO/2002/077302A2
The process for recovering gold from carbon eluate which includes the steps of adsorbing gold-cyanide from solution using an anion exchange resin, eluting the gold using a suitable eluant to produce a high-concentration gold solution, an...  
WO/2002/070756A2
A method of dissolve at least one metal from jarosite or other iron hydroxy sulfate containing-material which includes the steps of subjecting the material to alkaline treatment in a brine solution to facilitate jarosite decomposition, a...  
WO/2002/066691A2
A sieve tray column for stripping or recovering metal values from a metal value bearing material includes an elongate column body having an upper end and a lower end and a chamber defined therein. A plurality of spaced apart sieve trays ...  
WO/2002/061156A1
A method for recovering palladium by reducing and capturing a palladium ion present in water together with a divalent copper ion and the like, using a metal ion treating agent having a porous carrier and an anthrahydroquinone compound ca...  
WO/2002/059387A1
A method for selectively separating and recovering palladium from an aqueous palladium/tin catalyst solution. The method includes teh steps of adjusting the pH of the aqueous solution to a specified pH range therby precipitating the tin,...  
WO/2002/053788A1
A method for the recovery of base metals such as cobalt, nickel, copper, lead, zinc, mercury and cadmium, precious metals such as silver and gold, as well as the platinum group metals, comprising ruthenium, rhodium, palladium, osmium, ir...  
WO/2002/046483A2
This invention relates to methods for regenerating spent DNA detection chips for further use. Specifically, this invention relates to a method for removal of silver form used DNA detection chips that employ gold nanoparticle-oligonucleot...  
WO/2002/036837A1
A chromatographic separation method separates ruthenium from other platinum group metals in a feed solution, by converting the Ru to a nitrosyl complex, retaining the nitrosyl complex temporarily on the chromatography column and subseque...  
WO/2002/034399A1
The invention relates to a method for processing shredder residues of metal-containing refuse, especially bodies of motor vehicles, according to which the shredder residues are separated into a shredder light fraction (SLF) and a non-fer...  
WO/2002/033135A1
A method for the recovery of a metal from a liquid medium containing the metal I solution or in finely divided insoluble from comprises contacting the medium with a functionalised polymer fibre capable of binding the metal and recovering...  

Matches 651 - 700 out of 3,171