| Patents for C22B 15 - Obtaining copper (5,364) |
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| 06/23/2005 | WO2005056842A1 Improved bacterial oxidation of sulphide ores and concentrates |
| 06/23/2005 | CA2549656A1 Improved bacterial oxidation of sulphide ores and concentrates |
| 06/22/2005 | CN1629327A Reducing agent and continuous powder applying apparatus for refining copper by fire method |
| 06/21/2005 | CA2289279C Method for recycling brass foundry waste |
| 06/16/2005 | US20050130866 Copper mass is dissolved in oxidant (air) in an aqueous leach liquor of both monoethanolamine and monoethanolammonium carbonate; MEA complex of copper carbonate; efficient, fast, and inexpensive suitable for making a pesticide used in the wood treatment industry against termites |
| 06/16/2005 | US20050126923 Process for recovery of copper from copper-bearing material using medium temperature pressure leaching, direct electrowinning and solvent/solution extraction |
| 06/15/2005 | CN1206376C Bioleaching of sulphide minerals |
| 06/14/2005 | US6905532 Dissolving copper in the presence of an oxidant in an aqueous leach liquor of ethanolamine and (monoethanolammonium)2 carbonate |
| 06/14/2005 | US6905531 Copper mass is dissolved in the presence of an oxidant in an aqueous leach liquor of monoethanolamine and (monoethanol ammonium)2 carbonate |
| 06/02/2005 | US20050118081 Process for the recovery of value metals from base metal sulfide ores |
| 06/02/2005 | US20050115037 Method for manufacturing core material for electrode plate and method for manufacturing alkali storage battery |
| 05/26/2005 | US20050109163 From copper-containing sulfide ores; high quality cathode copper from a leach solution without the use of copper solvent extraction techniques |
| 05/19/2005 | WO2005045079A1 Method for fire refining of metals in the thermodynamically equilibrium system of a drip-gas medium |
| 05/19/2005 | WO2005045078A1 A method for the removal of copper from a zinc sulphate solution |
| 05/19/2005 | US20050103157 Recovering metals trapped in ores and slags by reacting laterites, magnetites or iron oxides with carbon, chloride and water using microwave radiation as the primary energy source; the water, carbon and chloride can be recycled |
| 05/17/2005 | US6893482 Method for improving metals recovery using high temperature pressure leaching |
| 05/12/2005 | WO2005042790A1 Leach extraction method |
| 05/12/2005 | CA2544511A1 Leach extraction method |
| 05/11/2005 | CN1614047A Electronic tough copper and its production |
| 05/10/2005 | US6890371 Method for processing elemental sulfur-bearing materials using high temperature pressure leaching |
| 05/06/2005 | WO2004104238A3 Method for extracting copper from leach solutions at elevated temperatures |
| 05/04/2005 | CN1612944A Process for the treatment of molybdenum concentrate |
| 05/03/2005 | US6887368 Comprises six-electrode-containing bipolar cylindrical electroreactor and application of alternating current |
| 05/03/2005 | US6887298 Injecting carbonaceous reducing agent via tuyeres into throttle point |
| 04/28/2005 | US20050087722 Recovering copper using water insoluble extractant; minimizing entrainment of aqueous in the loaded organic, higher recoveries of copper, reduced equipment size such as smaller mixers and settlers and less overall organic inventory being required to operate a commercial plant |
| 04/28/2005 | US20050087037 Recovery of natural nanoclusters and the nanoclusters isolated thereby |
| 04/27/2005 | CN1198950C Recovery of zinc from zinc bearing sulphide minerals by bioleaching and electrowinning |
| 04/27/2005 | CN1198949C Recovery of copper from copper bearing sulphide minerals by bioleaching with controlled oxygen feed |
| 04/21/2005 | US20050081683 Process for extracting platinum group metals |
| 04/14/2005 | US20050077250 Methods for recovering metals |
| 04/13/2005 | CN1196799C Method for extraction of metal from iron ore containing chalcopyrite |
| 04/07/2005 | WO2005031234A1 Industrial oven |
| 04/07/2005 | WO2005031013A1 Platinum group metal extraction by ore smelting and conversion |
| 04/07/2005 | WO2005031012A1 A process for the recovery of value metals from base metal sulfide ores |
| 04/07/2005 | WO2005031011A1 Method for smelting inert material |
| 04/06/2005 | CN1604969A Recovery of copper from chalcopyrite |
| 04/06/2005 | CN1603433A Dressing and smelting united technology for processing refractory copper zinc ore mixtures |
| 04/06/2005 | CN1195598C Adhesion-resistant oxygen-free copper roughly drawn wire |
| 04/05/2005 | CA2282470C A process for the leaching of chalcopyrite |
| 03/31/2005 | WO2005028686A1 Method for processing anode sludge |
| 03/31/2005 | US20050067299 Electrolytic method in diaphragm-type cell |
| 03/31/2005 | DE10340087A1 Industrieofen Industrial furnace |
| 03/30/2005 | CN1602405A Method and apparatus for increasing the capacity of a waste heat boiler in a metallurgic smelting furnace |
| 03/30/2005 | CN1600478A Fabricating copper powder from water slurry of sulfide of copper through hydrogen reduction |
| 03/22/2005 | US6868599 Coated wire is separated into a decomposed coating insulator and a molten electric conductor by microwave |
| 03/10/2005 | WO2005022062A1 Electric reducing furnace |
| 03/10/2005 | WO2005021808A1 Method for the pyrometallurgical production of copper in a converter |
| 03/10/2005 | US20050051110 Method and apparatus for increasing the capacity of a waste heat boiler in a metallurgic smelting furnance |
| 03/10/2005 | CA2539011A1 Method for the pyrometallurgical production of copper in a converter |
| 03/09/2005 | EP1511868A1 Method for producing blister copper |
| 03/09/2005 | EP1301642B1 Method and device for reducing the oxygen content of a copper melt |
| 03/08/2005 | US6863873 Process to produce simonkolleite, zinc oxide and zinc hydroxide |
| 03/03/2005 | WO2005019500A1 Method of recovery of metals from etching solutions |
| 03/03/2005 | WO2005019481A2 Methods and systems for removing copper from ferrous scrap |
| 03/03/2005 | WO2004101834A3 Treatment of base metal concentrate by a two-step bioleaching process |
| 03/03/2005 | WO2004096717A3 Method and apparatus for treating waste water |
| 03/03/2005 | US20050044990 Recovery of copper from chalcopyrite |
| 03/01/2005 | US6860919 Recovery of precious metal from sulphide minerals by bioleaching |
| 02/24/2005 | US20050042156 Using an etching solution of ferric chloride to etch nickel and/or copper, placing iron particles in the spent etching solution to precipitate a metal powder of nickel and/or copper; regeneration of remaining etching solution; prevents sludge waste |
| 02/24/2005 | US20050040108 Metal ion recovery |
| 02/23/2005 | EP1507878A1 Chloride assisted hydrometallurgical extraction of metals |
| 02/23/2005 | CN1584129A Method and apparatus for separating copper from copper-containing waste liquid |
| 02/22/2005 | US6858175 Bottom structure for a smelting furnace |
| 02/17/2005 | US20050034563 Process for the dissolution of copper metal |
| 02/17/2005 | DE10335847A1 Electric arc reduction furnace for reducing slag in the recovery of metallic components comprises a charging opening for charging material which simultaneously acts as an exhaust gas line opening for the gas produced |
| 02/10/2005 | WO2005012581A2 Methods for improving the recovery of metal leaching agents |
| 02/10/2005 | US20050031512 Clarifying a first aqueous leach pulp by solid-liquid separation and solvent extraction to obtain a raffinate and a second aqueous leach pulp; diluted separation and extraction of the second pulp; pollution control |
| 02/09/2005 | CN1188533C Smelting method for separating Cu, Zn and Co from each other |
| 02/03/2005 | US20050022629 Pyrite is removed from leaching residue by pyrolyzing the residue at 550 degrees C. or higher in a non-oxidative atmosphere to produce calcined ore containing pyrrhotite, precious metals and gangue; and re-leaching the calcined ore in an acidic, aqueous solution |
| 02/02/2005 | EP1502963A1 Recovery of metals from azole containing waste fluid by ozonization and electrolysis |
| 02/02/2005 | EP1501952A2 Process for extracting platinum group metals |
| 02/02/2005 | CN1575346A Method for purifying the solution in the hydrometallurgical processing of copper |
| 01/27/2005 | WO2005007905A1 Method for smelting copper concentrates |
| 01/27/2005 | WO2005007902A1 Method for producing concentrates |
| 01/27/2005 | WO2005007901A1 Method for processing sulfide ores containing precious metals |
| 01/27/2005 | CA2530355A1 Method for processing sulfide ores containing precious metals |
| 01/26/2005 | EP0986432B1 Method and system for selective removal of contamination from gas flows |
| 01/26/2005 | CN2673882Y Copper smelter with function of removing oxygen |
| 01/26/2005 | CN1571910A Melt launder |
| 01/26/2005 | CN1571852A Zinc recovery process |
| 01/25/2005 | US6846346 Sulfatization process for metal extraction from sulfide ores |
| 01/20/2005 | WO2005005672A1 Oxidative leach process |
| 01/20/2005 | CA2532999A1 Oxidative leach process |
| 01/19/2005 | EP1497474A1 Method for the purification of copper chloride solution |
| 01/19/2005 | EP1434893A4 Zinc recovery process |
| 01/19/2005 | CN1566379A Copper-zinc separation method during smelting in a blast furnace |
| 01/18/2005 | US6843827 Method of smelting copper sulfide concentrate |
| 01/13/2005 | WO2004083467A3 Recovery of metal values from cermet |
| 01/12/2005 | EP1495149A1 Process for the treatment or removal of impurities in a hydrometallurgical extraction process |
| 01/12/2005 | CN2670376Y Continuous powder spraying apparatus for reduction of refined copper by firing process |
| 01/12/2005 | CN1184337C Process for refining raw copper bynon-oxidiznig nitrogen-doping reducing pyrometallurgy |
| 01/11/2005 | CA2323412C Method for transforming slag derived from non-iron metallurgy |
| 01/04/2005 | US6837996 Polysulfonamide matrices |
| 01/04/2005 | CA2258607C Apparatus and method for copper extraction by in-situ electrolysis in heap-leaching of ores |
| 12/30/2004 | US20040261579 Interlaced series parallel configuration for metal solvent extraction plants |
| 12/29/2004 | EP1490375A2 Process for the dissolution of copper metal |
| 12/29/2004 | CN1182263C Base metal recovery from tailings drum by bacterial oxidation |
| 12/28/2004 | US6835295 Electroplating; improved efficiency |
| 12/23/2004 | US20040258590 Method for extracting copper from leach solutions at elevated temperatures |
| 12/23/2004 | US20040256771 Arrangement and method for tapping a molten phase from a smelting furnace |