| Patents for C22B - Production or refining of metals; Pretreatment of raw materials (459) |
|---|
| 09/02/2014 | US8821613 Method for thiosulfate leaching of precious metal-containing materials |
| 07/08/2014 | CA2698578C Method for thiosulfate leaching of precious metal-containing materials |
| 02/20/2014 | US20140047954 Method for thiosulfate leaching of precious metal-containing materials |
| 01/07/2014 | CA2597354C Method for the treatment of copper-bearing materials |
| 12/03/2013 | US8597399 Method for thiosulfate leaching of precious metal-containing materials |
| 10/08/2013 | CA2605005C Method for the recovery of valuable metals and arsenic from a solution |
| 07/16/2013 | CA2580184C Method for comminution of material |
| 04/09/2013 | CA2530355C Method for processing sulfide ores containing precious metals |
| 04/02/2013 | CA2570325C Method and device for treating anode slime |
| 12/04/2012 | CA2664756C Method for thiosulfate leaching of precious metal-containing materials |
| 09/04/2012 | CA2511572C Method for controlling biooxidation reactions |
| 08/28/2012 | CA2745933C Method for thiosulfate leaching of precious metal-containing materials |
| 05/01/2012 | CA2515778C Elevated discharge gas lift bubble pump and furnace for use therewith |
| 11/22/2011 | US8062614 Methods for improving the recovery of metal leaching agents |
| 11/01/2011 | CA2617457C Method for thiosulfate leaching of precious metal-containing materials |
| 10/04/2011 | US8030055 Method of biotreatment for solid materials in a nonstirred surface bioreactor |
| 09/20/2011 | US8021870 Method of biotreating a solid material comprising an organic compound |
| 09/20/2011 | US8021459 Method and apparatus for controlling metal separation |
| 09/14/2011 | CN1981060B Method and device for treating anode slime |
| 06/09/2011 | US20110132147 Method for thiosulfate leaching of precious metal-containing materials |
| 04/19/2011 | CA2424372C Precious metal scavenging from a liquid medium with a functionalised polymer fiber |
| 12/23/2010 | US20100319490 Methods for Improving the Recovery of Metal Leaching Agents |
| 11/25/2010 | US20100296987 Method for the Recovery of Gold from a Gold-Containing Solution |
| 11/17/2010 | EP1834001B1 Method for the hydrometallurgical treatment of sulfide concentrate containing several valuable metals |
| 11/10/2010 | EP1664358B1 Method and apparatus for controlling metal separation |
| 10/12/2010 | US7811534 leaching copper minerals such as chalcopyrite, bornite, digenite and gangue minerals, in the presence of iron sulfide, to obtain copper sulfide, then smelting to form copper; removal of impurities by floatation |
| 09/21/2010 | US7799294 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 |
| 09/21/2010 | CA2429691C Bioproduct production |
| 08/31/2010 | US7785395 particularly arsenopyrite and/or pyrite; hydrometallurgy; leaching; separating Elemental sulfur and precipitated iron and arsenic compds; free gold that remains undissolved is separated by gravity separation; sulfide minerals are decomposed, gold-containing solution is routed to concentrate leach circuit |
| 07/20/2010 | US7757977 Method for comminution of material |
| 07/06/2010 | US7749302 Method for the hydrometallurgical treatment of sulfide concentrate containing several valuable metals |
| 06/03/2010 | US20100132509 Method for thiosulfate leaching of precious metal-containing materials |
| 04/27/2010 | US7704298 contacting with thiosulfate lixiviants to solubilize the precious metal and form pregnant leach solution, then electrowinning in presence of sulfite |
| 04/27/2010 | CA2181961C Interseparation of platinum group metals |
| 04/06/2010 | CA2620644C Method for thiosulfate leaching of precious metal-containing materials |
| 03/23/2010 | US7682581 removal of Cu from a concentrated chloride-containing ZnSO4 raw solution that is going to an electrolytic preparation of zinc, using chelating alkyl-silylated silica-based ion exchanger having polyamine group, comprising routing raws solution to an ion exchange stage; purifying copper free raw solution |
| 03/02/2010 | US7670575 Method and device for treating anode slime |
| 02/23/2010 | CA2314581C Improvements in refining |
| 02/23/2010 | CA2229232C Method for recovering nickel hydrometallurgically from two different nickel mattes |
| 01/12/2010 | CA2617415C Method for thiosulfate leaching of precious metal-containing materials |
| 01/12/2010 | CA2409378C Method for thiosulfate leaching of precious metal-containing materials |
| 11/11/2009 | CN100558918C Method for the recovery of valuable metals and arsenic from a solution |
| 11/10/2009 | US7615199 Method for the recovery of valuable metals and arsenic from a solution |
| 07/14/2009 | US7559974 Method for thiosulfate leaching of precious metal-containing materials |
| 06/09/2009 | US7544231 From cyanide solution or leachate via precipitation; ion exchanging |
| 06/09/2009 | US7544227 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 |
| 05/06/2009 | CN100485091C Separation method of nickel ion in iron trichloride solution by crystallization and extraction method |
| 05/06/2009 | CN100485060C Method for recovering gold from a gold-containing solution |
| 05/06/2009 | CN100485059C Method for recovering gold from sulphide concentrate |
| 04/07/2009 | CA2525090C Aluminosilicate mixture for fabrication of fireproof, high-strength granules, fireproof high-strength spherical granules and the method of their manufacture |
| 03/25/2009 | CN100471967C Method for the hydrometallurgical treatment of sulfide concentrate containing several valuable metals |
| 03/18/2009 | CN100469908C Method for the treatment of copper-containing materials |
| 02/24/2009 | CA2295066C Selective precipitation of nickel and cobalt |
| 02/12/2009 | US20090038440 Method for the Recovery of Gold from Sulphide Concentrate |
| 01/22/2009 | US20090022639 Treatment of material containing at least one valuable metal and arsenic to form a valuable metal-depleted scorodite sediment and a pure aqueous solution to be discharged from process; valuable metals are first removed and then arsenic precipitation from solution is performed in two stages |
| 01/01/2009 | US20090004728 Method of biotreatment for solid materials in a nonstirred surface bioreactor |
| 12/18/2008 | US20080311647 Method of Biotreating a Solid Material Comprising an Organic Compound |
| 12/10/2008 | EP1659103A4 Charging material for producing refractory high-strength spherical granules and method for the production thereof |
| 10/02/2008 | US20080241024 Method for Leaching Metal Sulphide Minerals |
| 08/05/2008 | CA2384664C Stable ferric arsenate precipitation from acid copper solutions whilst minimising copper losses |
| 07/30/2008 | CN100406593C Preparation of zinc chemicals from the minor flow of a process |
| 07/17/2008 | US20080170976 Method for the Hydrometallurgical Treatment of Sulfide Concentrate Containing Several Valuable Metals |
| 06/26/2008 | US20080152558 Method for the Treatment of Copper-Bearing Materials |
| 05/08/2008 | US20080105088 Method for thiosulfate leaching of precious metal-containing materials |
| 04/30/2008 | CN101171348A Method for the recovery of valuable metals and arsenic from a solution |
| 04/02/2008 | EP1601802B1 Elevated discharge gas lift bubble pump and furnace for use therewith |
| 02/06/2008 | CN101120108A Method for the treatment of copper-bearing materials |
| 02/06/2008 | CN101120107A Method for the recovery of gold from a gold-containing solution |
| 02/06/2008 | CN101120106A Method for the recovery of gold from sulphide concentrate |
| 01/16/2008 | EP1877587A1 Method for the recovery of valuable metals and arsenic from a solution |
| 01/16/2008 | CN100362118C Method and apparatus for controlling metal separation |
| 01/01/2008 | US7314604 Adding air to an acidic solution containing arsenic(V), copper, ferric iron and ferrous iron in a continuously stirred tankto oxidize the ferrous to ferric ion and heating to precipitate FeAsO4; recycling a portion of FeAsO4; seeding with FeAsO4 to enhance crystalline formation |
| 12/19/2007 | CN101090984A Method for the hydrometallurgical treatment of sulfide concentrate containing several valuable metals |
| 12/12/2007 | CN100354437C Method for processing sulfide ores containing precious metals |
| 11/29/2007 | US20070274884 Method and Device for Treating Anode Slime |
| 11/29/2007 | US20070273071 Method and Apparatus for Controlling Metal Separation |
| 11/08/2007 | US20070257139 Method for Comminution of Material |
| 11/01/2007 | US20070253878 Preparation of Zinc Chemicals from the Minor Flow of a Process |
| 10/31/2007 | EP1848834A1 Method for the treatment of copper-bearing materials |
| 10/25/2007 | US20070245856 Method for Recovering Gold |
| 09/20/2007 | US20070215019 Method and Use of an Apparatus for Recovery of Metals or Metal Compounds |
| 09/19/2007 | EP1834001A1 Method for the hydrometallurgical treatment of sulfide concentrate containing several valuable metals |
| 09/19/2007 | EP1834000A1 A method and use of an apparatus for recovery of metals or metal compounds |
| 09/18/2007 | US7270947 Method for controlling biooxidation reactions |
| 09/18/2007 | US7270704 Mixture for fabrication of fireproof high-strength spherical granules and the method of their manufacture |
| 09/18/2007 | CA2439970C Recovery of metals from jarosite-containing materials |
| 09/12/2007 | CN101035623A Method for comminution of material |
| 08/08/2007 | CN101014723A Preparation of zinc chemicals from the minor flow of a process |
| 06/13/2007 | EP1794334A1 Preparation of zinc chemicals from the minor flow of a process |
| 06/13/2007 | CN1981060A Method and device for treating anode slime |
| 04/19/2007 | WO2007042604A1 A method for leaching metal sulphide minerals |
| 04/18/2007 | CN1950524A Method for recovering gold |
| 03/13/2007 | CA2149442C A method of producing metallic magnesium, magnesium oxide or a refractory material |
| 03/01/2007 | US20070048203 removal of Cu from a concentrated chloride-containing ZnSO4 raw solution that is going to an electrolytic preparation of zinc, using chelating alkyl-silylated silica-based ion exchanger having polyamine group, comprising routing raws solution to an ion exchange stage; purifying copper free raw solution |
| 02/01/2007 | US20070022843 Recovery of platinum group metals |
| 01/10/2007 | EP1740730A1 Method for recovering gold |
| 11/09/2006 | WO2006117424A1 Method for the recovery of valuable metals and arsenic from a solution |
| 11/09/2006 | CA2605005A1 Method for the recovery of valuable metals and arsenic from a solution |
| 09/06/2006 | CN1829809A Method and apparatus for controlling metal separation |
| 08/24/2006 | WO2006087413A1 Method for the recovery of gold from a gold-containing solution |