| Patents for C22B 15 - Obtaining copper (5,364) |
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| 05/27/2003 | US6569391 Heap leaching copper ore using sodium nitrate |
| 05/27/2003 | US6569224 Hydrometallurgical process for the recovery of nickel and cobalt values from a sulfidic flotation concentrate |
| 05/22/2003 | WO2002061157A3 Silica-polyamine based extraction materials for the separation of copper ions and ferric iron in aqueous leach liquids |
| 05/20/2003 | US6565799 Equipment for the even feed of pulverous material to a concentrate burner of suspension smelting furnace |
| 05/15/2003 | US20030089619 Process and apparatus for recovery of cyanide and metals |
| 05/14/2003 | EP1309392A1 Method for metal recovery from aqueous solutions |
| 05/08/2003 | WO2003038138A1 Non-ferrous melt refinement and equipment |
| 05/08/2003 | WO2003038137A1 Recovery of copper from chalcopyrite |
| 05/08/2003 | US20030086864 Forming aqueous slurry of low grade molybdenite concentrates; oxidizing; filtering discharge; leaching solid filter cake with an alkaline solution; filtering second discharge; recovering the molybdenum value; crystallization |
| 05/08/2003 | US20030086849 Method for processing elemental sulfur-bearing materials using high temperature pressure leaching |
| 05/07/2003 | EP0879301B1 Improved beta-diketones for the extraction of copper from aqueous ammoniacal solutions |
| 05/07/2003 | CN1415768A Refining technique for producing copper containing ultra low oxygen |
| 05/01/2003 | WO2003036210A1 Arrangement and method for tapping a molten phase from a smelting furnace |
| 05/01/2003 | WO2003035916A1 A method for purifying the solution in the hydrometallurgical processing of copper |
| 05/01/2003 | WO2003010345B1 Method for improving metals recovery using high temperature pressure leaching |
| 04/30/2003 | CN1415023A Method for production of blister copper in suspension reactor |
| 04/30/2003 | CN1414124A Method of recovering waste copper foil |
| 04/23/2003 | WO2003033982A1 Melt launder |
| 04/23/2003 | EP1303642A2 Method for recovering copper from sulfide ore materials using high temperature pressure leaching, solvent extraction and electrowinning |
| 04/23/2003 | EP1303641A2 Method for recovery of copper from sulfidic ore materials using super-fine grinding and medium temperature pressure leaching |
| 04/23/2003 | EP1303640A2 Processing elemental sulfur-bearing materials using high temperature pressure leaching for sulfuric acid production and metal recovery |
| 04/23/2003 | CA2466802A1 Melt launder |
| 04/17/2003 | DE19780281C1 Separating heavy metals from sulphide-containing residual products from mining and metal processing |
| 04/16/2003 | EP1301642A1 Method and device for reducing the oxygen content of a copper melt |
| 04/03/2003 | WO2003027339A1 Metal ion recovery |
| 04/03/2003 | US20030061910 Processes for the recovery of copper from aqueous solutions containing nitrate ions |
| 04/03/2003 | CA2460813A1 Metal ion recovery |
| 04/02/2003 | CN1104620C Method and apparatus for feeding reaction gas and solids |
| 04/01/2003 | CA2222900C Method of biotreatment for solid materials in a nonstirred surface bioreactor |
| 03/27/2003 | WO2003025236A1 Method for the production of blister copper |
| 03/27/2003 | US20030057161 Using chelating resins for removing copper; displacing absorbed copper by treating resins with hydrochloric acid or sulfuric acid solutions; waste from iodine recovery by copper mineralization of X-ray contrast agent production solutions |
| 03/27/2003 | US20030057103 Electrowinning cell incorporating metal ion filtration apparatus |
| 03/26/2003 | EP1295076A1 Apparatus for removing dust accretions from a smelting furnace |
| 03/26/2003 | EP0981652B1 Sulfide mineral concentrate bioleaching |
| 03/26/2003 | CN1405340A Molten metal distillation apparatus |
| 03/25/2003 | US6537440 Processing copper sulphide ores |
| 03/20/2003 | WO2003023077A1 Zinc recovery process |
| 03/18/2003 | US6533990 Apparatus for distilling molten baths |
| 03/18/2003 | CA2150455C Process to convert non-ferrous metal such as copper or nickel by oxygen enrichment |
| 03/13/2003 | WO2003020647A1 Method of treating heavy-metal-containing wastewater with sulfidizing agent and treatment apparatus |
| 03/12/2003 | EP1289637A2 Polysulfonamide matrices |
| 03/12/2003 | EP1289628A2 Acid stable membranes for nanofiltration |
| 03/06/2003 | US20030044335 Using oxidizer |
| 02/26/2003 | EP1012352B1 Chloride assisted hydrometallurgical extraction of nickel and cobalt from sulphide or laterite ores |
| 02/20/2003 | WO2003014422A1 Improvements in solvent extraction processes for metal recovery |
| 02/20/2003 | US20030033906 Chlorine leaching; oxidation pressure leaching |
| 02/18/2003 | US6521117 Method for metal recovery from aqueous solutions |
| 02/12/2003 | EP1283273A2 Apparatus for distilling molten metal |
| 02/12/2003 | CN1396283A Reducer and process for reducing copper oxide in reduction phase of furnace using copper as anode |
| 02/11/2003 | US6517789 Method for reclaiming constituents from an industrial waste stream |
| 02/06/2003 | WO2003010362A2 Process for direct electrowinning of copper |
| 02/06/2003 | WO2003010345A1 Method for improving metals recovery using high temperature pressure leaching |
| 02/06/2003 | US20030025253 Apparatus for distilling molten baths |
| 02/06/2003 | CA2454812A1 Method for improving metals recovery using high temperature pressure leaching |
| 02/04/2003 | US6514311 Clean process of recovering metals from waste lithium ion batteries |
| 01/30/2003 | US20030019331 Process for direct electrowinning of copper |
| 01/30/2003 | US20030019330 Method for improving metals recovery using high temperature pressure leaching |
| 01/23/2003 | US20030017106 Recovery of natural nanoclusters and the nanoclusters isolated thereby |
| 01/22/2003 | CN1392902A Recovery of nickel and cobalt values from sulfidic flotation concentrate by chloride assisted oxidative pressure leaching in sulfuric acid |
| 01/15/2003 | CN1390962A Process for refining raw copper bynon-oxidizing nitrogen-doping reducing pyrometallurgy |
| 01/09/2003 | WO2002042504A3 Bioproduct production during oxidisation of metal sulphide minerals by means of microorganisms |
| 01/09/2003 | US20030008145 Complex of metal and ligand; using reducing agent; catalyst |
| 01/07/2003 | US6503293 Process for the extraction of copper |
| 01/01/2003 | CN2528780Y Copper smelting vacuum deaerator |
| 01/01/2003 | CN1388257A Regeneration process of copper or iron system desulfurizing agent |
| 01/01/2003 | CN1097643C Process for making copper foil |
| 12/25/2002 | CN1387582A Recovery of zinc from zinc bearing sulphide minerals by bioleaching and electrowinning |
| 12/25/2002 | CN1387581A Bioleaching of sulphide minerals |
| 12/25/2002 | CN1387580A Base metal recovery from tailings drum by bacterial oxidation |
| 12/24/2002 | US6497745 Method for processing elemental sulfur-bearing materials using high temperature pressure leaching |
| 12/19/2002 | WO2002075006A3 In situ desulfurization scrubbing process for refining blister copper |
| 12/17/2002 | US6495024 Method for the removal of arsenic from sulfuric acid solution |
| 12/17/2002 | US6494932 Recovery of natural nanoclusters and the nanoclusters isolated thereby |
| 12/17/2002 | CA2215963C Atmospheric mineral leaching process |
| 12/12/2002 | WO2002099144A1 Selective recovery of precious metal(s) |
| 12/12/2002 | DE10134286C1 Device for distilling molten metal comprises a pot-like lower housing part for receiving a melt crucible and an upper housing part connected to the lower housing part |
| 12/12/2002 | CA2449353A1 Selective recovery of precious metal(s) |
| 12/11/2002 | CN1384890A Recovery of copper from copper bearing sulphide minerals by bioleaching with controlled oxygen feed |
| 12/05/2002 | WO2002076378A3 Method for producing stable cupric hydroxide and basic cupric salts |
| 12/04/2002 | CN1382814A Smelting method for separating Cu, Zn and Co from each other |
| 12/03/2002 | CA2376883C Recovery of nickel and cobalt values from a sulfidic flotation concentrate by chloride assisted oxidative pressure leaching in sulfuric acid |
| 11/28/2002 | US20020175083 Process to remove ferric iron impurities from an acidic aqueous solution used in the electro-winning of copper |
| 11/27/2002 | EP1259652A1 Process and apparatus for recovery of cyanide and metals |
| 11/27/2002 | CN1094986C Improved beta-diketones for extraction of copper from aqueous ammoniacal solutions |
| 11/21/2002 | WO2002092863A1 Extraction process |
| 11/21/2002 | DE10212416A1 Recovery of copper hydroxide, useful as raw material for copper, and filtrate containing nitrogen compounds useful in denitrification of combustion exhaust gas, comprises mixing acid and alkaline copper concentrates |
| 11/20/2002 | EP1257676A1 Method for the production of blister copper in suspension reactor |
| 11/14/2002 | WO2002089944A1 Production of pure molybdenum oxide from low grade molybdenite concentrates |
| 11/14/2002 | US20020168309 Method for recovering catalytic metals |
| 11/12/2002 | US6478847 Copper scrap processing system |
| 11/05/2002 | US6476040 Processes and intermediates for preparing anti-cancer compounds |
| 10/31/2002 | US20020157504 Sulfidization of sulfide ores for hydrometallurgical extraction of copper and other metals |
| 10/30/2002 | EP1251940A2 A method for treatment of flue gas cleaning products |
| 10/30/2002 | EP1251920A1 Method and apparatus for metal removal by ion exchange |
| 10/30/2002 | CN1376804A Flash smelting technology for copper or nickel sulfide ore concentrate |
| 10/30/2002 | CN1376803A Recovery method for catalytic metal |
| 10/23/2002 | CN1376211A Stable ferric arsenate precipitation from acid copper solutions whilst minimising copper losses |
| 10/17/2002 | CA2381957A1 Process to remove ferric iron impurities from an acidic aqueous solution used in the electro-winning of copper |
| 10/10/2002 | WO2002079529A1 Method for direct metal making by microwave energy |
| 10/09/2002 | EP1157139B1 Treatment of metal sulphide concentrates by roasting and arc furnace smelt reduction |