| Patents for C22B - Production or refining of metals; Pretreatment of raw materials (459) |
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| 08/24/2006 | WO2006087412A1 Method for the recovery of gold from sulphide concentrate |
| 08/24/2006 | CA2598181A1 Method for the recovery of gold from a gold-containing solution |
| 08/24/2006 | CA2598055A1 Method for the recovery of gold from sulphide concentrate |
| 08/23/2006 | CN1823171A Method for processing sulfide ores containing precious metals |
| 08/17/2006 | WO2006084950A1 Method for the treatment of copper-bearing materials |
| 08/17/2006 | CA2597354A1 Method for the treatment of copper-bearing materials |
| 08/01/2006 | US7083731 Binding to polymer fibers |
| 07/06/2006 | WO2006070052A1 Method for the hydrometallurgical treatment of sulfide concentrate containing several valuable metals |
| 07/06/2006 | CA2591887A1 Method for the hydrometallurgical treatment of sulfide concentrate containing several valuable metals |
| 06/27/2006 | US7066983 Thiosulfate lixiviants that include at most only small amounts of copper and/or ammonia and operate at low ph, reduction of polythionates |
| 06/07/2006 | EP1664358A1 Method and apparatus for controlling metal separation |
| 06/07/2006 | CN1258785C Sintered anode |
| 05/24/2006 | EP1659103A2 Charging material for producing refractory high-strength spherical granules and method for the production thereof |
| 05/23/2006 | CA2208026C Chloride assisted hydrometallurgical copper extraction |
| 05/02/2006 | US7037357 Dissolving; alkaline treatment in brine solutions, then acidification |
| 04/20/2006 | WO2006041394A1 A method and use of an apparatus for recovery of metals or metal compounds |
| 04/20/2006 | WO2006040392A1 Production of metallic copper by reducing copper (i) oxide using hydrogen |
| 04/20/2006 | CA2580648A1 A method and use of an apparatus for recovery of metals or metal compounds |
| 04/16/2006 | CA2580184A1 Method for comminution of material |
| 04/13/2006 | WO2006037842A1 Method for comminution of material |
| 03/16/2006 | WO2006027412A1 Preparation of zinc chemicals from the minor flow of a process |
| 03/16/2006 | US20060058173 Mixing presintered kaolin and bauxite with free quartz; jointly sintering to produce a charging material; granulating, drying and screening the charging material, sintering in the rotational furnace and screening the sintered granules; refractory propping agents |
| 03/16/2006 | CA2577863A1 Preparation of zinc chemicals from the minor flow of a process |
| 03/15/2006 | EP1112389B1 Process for recovery of gold and/or silver |
| 03/09/2006 | WO2006024691A1 Method for treating iron residue |
| 01/12/2006 | WO2006003246A1 Method and device for treating anode slime |
| 01/12/2006 | CA2570325A1 Method and device for treating anode slime |
| 12/07/2005 | EP1601802A2 Elevated discharge gas lift bubble pump and furnace for use therewith |
| 11/10/2005 | WO2005106052A1 Method for recovering gold |
| 11/10/2005 | WO2005106051A1 Method for the recovery of gold in connection with the production of copper |
| 11/10/2005 | WO2004101832A3 Microwave enhancement of the segregation roast |
| 11/10/2005 | CA2564338A1 Method for recovering gold |
| 11/03/2005 | WO2004074523A3 Elevated discharge gas lift bubble pump and furnace for use therewith |
| 10/26/2005 | EP1587936A2 Method for controlling biooxidation reactions |
| 09/28/2005 | CN1673415A Separation of nickel ion in iron trichloride solution by crystallization and extraction method |
| 09/28/2005 | CN1220785C Dressing ore process of clay type gold ore pond leaching method |
| 09/28/2005 | CN1220784C Dressing ore process of clay type gold ore pile leaching method |
| 09/21/2005 | CN1219896C Method of producing sodium tungstate solution using scheelite powder as raw material |
| 09/15/2005 | WO2005085483A1 Metal leaching |
| 09/09/2005 | WO2005083132A1 Production of metallic copper by the hydrometallurgical reduction of copper (i) oxide |
| 07/12/2005 | CA2204424C Process for the extraction and production of gold and platinum-group metals through cyanidation under pressure |
| 07/07/2005 | WO2005012581A3 Methods for improving the recovery of metal leaching agents |
| 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 | US6893607 Elevated discharge gas lift bubble pump and furnace for use therewith |
| 05/06/2005 | WO2004104238A3 Method for extracting copper from leach solutions at elevated temperatures |
| 04/28/2005 | WO2004065644A3 Method for controlling biooxidation reactions |
| 04/21/2005 | US20050084940 Via biocatalyst; measuring oxygen consumption rate and carbon dioxide evolution rate |
| 04/14/2005 | WO2005019484A3 Charging material for producing refractory high-strength spherical granules and method for the production thereof |
| 04/07/2005 | WO2005031011A1 Method for smelting inert material |
| 03/03/2005 | WO2005019484A2 Charging material for producing refractory high-strength spherical granules and method for the production thereof |
| 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 |
| 02/03/2005 | WO2005010221A1 Method and apparatus for controlling metal separation |
| 02/03/2005 | CA2531772A1 Method and apparatus for controlling metal separation |
| 01/27/2005 | WO2005007901A1 Method for processing sulfide ores containing precious metals |
| 01/27/2005 | CA2530355A1 Method for processing sulfide ores containing precious metals |
| 12/29/2004 | EP1332234B1 Precious metal scavenging from a liquid medium with a functionalised polymer fiber |
| 12/23/2004 | US20040258590 Method for extracting copper from leach solutions at elevated temperatures |
| 12/02/2004 | WO2004104238A2 Method for extracting copper from leach solutions at elevated temperatures |
| 12/02/2004 | CA2525834A1 Method for extracting copper from leach solutions at elevated temperatures |
| 11/25/2004 | WO2004101832A2 Microwave enhancement of the segregation roast |
| 11/03/2004 | CN1542146A Immersion dressing process for clay type gold mine |
| 10/21/2004 | US20040206207 Method for thiosulfate leaching of precious metal-containing materials |
| 10/13/2004 | CN1170949C Method for selective precipitating arsenic from steel-containing ferric and ferric solution |
| 09/02/2004 | WO2004074523A2 Elevated discharge gas lift bubble pump and furnace for use therewith |
| 08/05/2004 | WO2004065644A2 Method for controlling biooxidation reactions |
| 06/24/2004 | US20040118248 Dissolving; alkaline treatment in brine solutions, then acidification |
| 05/06/2004 | EP1112389A4 Process for recovery of gold and/or silver |
| 04/04/2004 | CA2444309A1 Chemical formulations for treating self-heating metal ores |
| 03/16/2004 | CA2342692C A process for recovering gold from thiosulfate leach solutions and slurries with ion exchange resin |
| 02/26/2004 | US20040038354 Establishing an environment wherein microorganisms oxidise a slurry containing metal sulphide minerals, supplying a feed gas containing in excess of 21% oxygen by volume to the slurry, and extracting bioproducts from the slurry |
| 02/26/2004 | US20040035252 Thiosulfate lixiviants that include at most only small amounts of copper and/or ammonia and operate at low ph, reduction of polythionates |
| 02/12/2004 | WO2002070756A3 Recovery of metals from jarosite-containing materials |
| 02/12/2004 | US20040026329 Precious metal scavenging from a liquid medium with a functionalised polymer fiber |
| 02/11/2004 | CN1473946A Ore dressing process of clay type gold ore leaching method |
| 01/20/2004 | US6680035 Hydrometallurgy |
| 12/10/2003 | EP1232290B1 Method for leaching nickeliferous oxide ores of high and low magnesium laterites |
| 12/10/2003 | EP1228257B1 Atmospheric leach process for the recovery of nickel and cobalt from limonite and saprolite ores |
| 12/09/2003 | US6660059 Contacting the precious metal (gold) ore with a thiosulfate lixiviant at superatomopheric pressure in absence of added copper and ammonia to solubilize the precious metal from a pregnant thiosulfate leach solution, recovering the metal |
| 11/12/2003 | CN1455008A Method of producing sodium tungstate solution using scheelite powder as raw material |
| 10/23/2003 | US20030197313 Elevated discharge gas lift bubble pump and furnace for use therewith |
| 09/24/2003 | EP1346071A2 Bioproduct production |
| 08/06/2003 | EP1332234A1 Precious metal scavenging from a liquid medium with a functionalised polymer fiber |
| 07/08/2003 | CA2065491C Metal recovery |
| 04/24/2003 | US20030075021 Using sulfuric acid to recover titanium, iron, nickel, colbalt, silver and gold |
| 01/09/2003 | WO2002042504A3 Bioproduct production during oxidisation of metal sulphide minerals by means of microorganisms |
| 01/02/2003 | EP1268866A2 System for detecting inclusions in molten metals |
| 10/29/2002 | US6471743 Leaching such as ilmenite, leucoxene, perovskite or titano magnetite with sulfuric acid; precipitating titanium dioxide; improving efficiency by adding alkali metal halide, grinding, adding carbon source and/or controlling temperature |
| 10/23/2002 | CN1376211A Stable ferric arsenate precipitation from acid copper solutions whilst minimising copper losses |
| 09/26/2002 | WO2001088212A3 Method for thiosulfate leaching of precious metal-containing materials |
| 09/12/2002 | WO2002070756A2 Recovery of metals from jarosite-containing materials |
| 09/11/2002 | CN1368744A Sintered anode |
| 08/21/2002 | EP1232290A1 Method for leaching nickeliferous oxide ores of high and low magnesium laterites |
| 08/07/2002 | EP1228257A1 Atmospheric leach process for the recovery of nickel and cobalt from limonite and saprolite ores |
| 07/18/2002 | US20020092377 Method for thiosulfate leaching of precious metal-containing materials |
| 06/25/2002 | US6409979 Selective precipitation of nickel and cobalt |
| 06/25/2002 | CA2147760C Production of metallic cobalt powder |
| 05/30/2002 | WO2002042504A2 Bioproduct production during oxidisation of metal sulphide minerals by means of microorganisms |
| 04/30/2002 | US6379636 Method for leaching nickeliferous laterite ores |