| Patents for C22B 15 - Obtaining copper (5,364) |
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| 10/03/2002 | WO2002077301A1 Metal ion extraction materials and processes using same |
| 10/03/2002 | WO2002076378A2 Method for producing stable cupric hydroxide and basic cupric salts |
| 10/03/2002 | US20020139753 Materials and methods for the separation of copper ions and ferric iron in liquid solutions |
| 10/03/2002 | CA2440977A1 Metal ion extraction materials and processes using same |
| 10/02/2002 | EP1244817A1 Improved bacterial oxidation of sulphide ores and concentrates |
| 10/02/2002 | CN1372600A Improved bacterial oxidation of sulphide ores and concentrates |
| 09/26/2002 | WO2002075006A2 In situ desulfurization scrubbing process for refining blister copper |
| 09/26/2002 | US20020136685 Process for producing stable cupric hydroxide and basic cupric salts |
| 09/25/2002 | EP1242639A1 Equipment for the even feed of pulverous material to a concentrate burner of suspension smelting furnace |
| 09/25/2002 | EP1242638A1 A process for the recovery of copper from aqueous solutions containing iodinated organic compounds |
| 09/25/2002 | CN1371358A Method for separating copper from iron |
| 09/25/2002 | CN1370828A Intermediate thermophilic acidophilic thiobacillu strin and its application |
| 09/24/2002 | US6455019 Process for the extraction of copper from a sulphide copper ore or concentrate |
| 09/24/2002 | US6454829 And subsequent casting of the degassed metal, vacuum, copper |
| 09/17/2002 | US6451089 Process for direct electrowinning of copper |
| 09/17/2002 | US6451088 Method for improving metals recovery using high temperature leaching |
| 09/12/2002 | WO2002070758A1 Improved, high yield bioheap leaching of chalcopyrite copper ores |
| 09/12/2002 | WO2002070757A1 A method for the bacterially assisted heap leaching of chalcopyrite |
| 09/11/2002 | EP1064412B1 Method for transforming slag derived from non-iron metallurgy |
| 09/11/2002 | CN1090515C Method and apparatus for recirculating heavier solution from the separation part of two separable solutions into mixing unit |
| 09/06/2002 | WO2002008475A3 Method for recovery of copper from sulfidic ore materials using super-fine grinding and medium temperature pressure leaching |
| 08/29/2002 | WO2001091873A3 Polysulfonamide matrices |
| 08/28/2002 | EP1234062A2 Recovery of metals from ore by bioleaching with sulfur addition |
| 08/20/2002 | US6436169 Method of operating a copper smelting furnace |
| 08/15/2002 | WO2002008125A3 Method for recovering copper from sulfide ore materials using high temperature pressure leaching, solvent extraction and electrowinning |
| 08/14/2002 | EP1230406A2 Solvent extraction process for the recovery of valuable metals from acidic leachates |
| 08/14/2002 | EP1229977A1 Polyamide-containing ligands covalently bonded to supports, polyamide-containing resins, and methods for removing metals from solutions |
| 08/13/2002 | US6432167 Processes for the recovery of copper from aqueous solutions containing nitrate ions |
| 08/08/2002 | WO2002061157A2 Silica-polyamine based extraction materials for the separation of copper ions and ferric iron in aqueous leach liquids |
| 08/07/2002 | CN1362999A Electrowinning cell incorporating metal ion filtration apparatus |
| 08/06/2002 | US6428604 Hydrometallurgical process for the recovery of nickel and cobalt values from a sulfidic flotation concentrate |
| 07/30/2002 | CA2237710C Recovery of nickel from copper refinery tankhouse electrolyte |
| 07/25/2002 | WO2002058081A1 Device for recovering copper from waste electric lines |
| 07/24/2002 | EP1224972A1 A method for recovering catalytic metals from a colloidal solution |
| 07/23/2002 | US6423281 Adding a first fraction of a zinc oxide (zno)/ammonium chloride (nh4cl) solution to given amount of water to form an intermediate solution and zno precipitate, and the second fraction to the intermediate solution; from industrial waste |
| 07/18/2002 | WO2002055746A1 Method and apparatus for feeding solid material and oxidizing gas into suspension smelting furnace |
| 07/16/2002 | CA2067483C Process for removal of copper ions from aqueous effluent |
| 07/10/2002 | CN1357639A Purifying agent recovering method |
| 07/09/2002 | US6416565 Mixing with silica and calcium oxide |
| 07/09/2002 | CA2162626C Process for leaching nickel-copper matte |
| 07/04/2002 | US20020084220 Recovering a copper component from a cleaning agent that has been used for removing a phosphine or a silane contained as a harmful component in a harmful gas. |
| 07/03/2002 | EP1115891A4 Process for extracting and recovering copper |
| 07/03/2002 | EP0784193B1 Metal fusion furnace and metal fusing method |
| 07/02/2002 | CA2171149C Reduced dusting bath system for continuous metallurgical treatment of sulfide materials |
| 06/27/2002 | WO2002050319A1 Method for leaching copper concentrate |
| 06/27/2002 | CA2431466A1 Method for leaching copper concentrate |
| 06/25/2002 | US6409799 Recovering copper with sulfuric acid |
| 06/18/2002 | US6406676 Hydrometallurgy with iron and arsenic ions, acidity, precipitation and oxidation |
| 06/12/2002 | CN1353771A Equipment for even feed of pulverous materials to concentrate burner of suspension smelting furnace |
| 06/11/2002 | US6403043 Use of gaseous mixture containing an inert gas and an oxygen containing gas in desulphurization of blister copper during anode refining |
| 06/06/2002 | WO2002008474A3 Processing elemental sulfur-bearing materials using high temperature pressure leaching for sulfuric acid production and metal recovery |
| 05/30/2002 | WO2002042504A2 Bioproduct production during oxidisation of metal sulphide minerals by means of microorganisms |
| 05/29/2002 | EP1105234B1 Method and device for the continuous degassing of molten metals |
| 05/29/2002 | CN1351673A Improved method for heap leaching of chalocopyrite |
| 05/28/2002 | US6395062 Process for recovery of metals from metal-containing ores |
| 05/28/2002 | US6395059 Situ desulfurization scrubbing process for refining blister copper |
| 05/23/2002 | US20020060162 Method for metal recovery from aqueous solutions |
| 05/22/2002 | CN1350596A Method for reducing non-ferrous metal content in slag in the production of non-ferrous metals occurring in suspension smelting furnace |
| 05/22/2002 | CN1350595A Method for smelting non-ferrous metal sulphides in a suspension smelting furnace in order to produce matte of a high non-ferrous metal content and disposable slay |
| 05/22/2002 | CN1350473A A method for extracting copper from an aqueous solution |
| 05/21/2002 | US6391188 Processes and apparatus for recovery and removal of copper from fluids |
| 05/21/2002 | CA2224148C Process for making shaped copper articles |
| 05/15/2002 | EP1205564A2 Method of recovering a copper and/or a manganese component from a particulate gas cleaning agent |
| 05/15/2002 | EP1204774A1 Composition and process for the solvent extraction of metals using aldoxime or ketoxime extractants |
| 05/15/2002 | CN1348999A Copper-nickel slag treating method |
| 05/15/2002 | CN1084803C Process for making copper metal powder, copper oxides and copper foil |
| 05/14/2002 | US6387239 Contacting ore with microorganism which oxidizes sulfur; leaching; separation |
| 05/10/2002 | WO2002037044A1 Cooling element |
| 05/09/2002 | US20020053306 Shredder dust feeding facilities and reverberatory furnace provided with this feeding facilities |
| 05/09/2002 | US20020053260 Process for extraction of metals |
| 05/08/2002 | CN1348505A Sulphidisation of sulphide ores for hydrometallurgical extraction of copper and other metals |
| 05/08/2002 | CN1348015A Oxygen-rich air incoming stock using for non-ferrous metal production installation |
| 05/07/2002 | US6383460 Subjecting the concentrate containing nickel and cobalt hydroxide to a leaching stage with an ammonium solution to produce a leach solution containing nickel or cobalt values and a residue, and controlling the concentration of metals |
| 05/07/2002 | US6383254 Treatment solution and treatment method for reducing copper oxides |
| 05/02/2002 | WO2001094650A3 Process for the recovery of natural nanoclusters of metals and other elements and the nanoclusters isolated thereby |
| 05/02/2002 | DE10052728A1 Device for cooling anodes, especially copper anodes, comprises a cooling sink with cooling liquid, an insertion unit, a removal unit, a unit for collecting anode waste products, and a unit for transporting the waste products from the sink |
| 04/23/2002 | US6375713 Improving recovery of copper and reducing raw material costs, sulfuric acid leaching |
| 04/18/2002 | US20020044899 Controlled, super-fine grinding so particles react completely during leaching; extraction of copper from copper sulfide ores and concentrates |
| 04/18/2002 | US20020043133 Method of smelting copper sulfide concentrate |
| 04/16/2002 | CA2169140C Gold recovery from refractory carbonaceous ores by pressure oxidation and thiosulfate leaching |
| 04/10/2002 | EP1194612A1 Electrowinning cell incorporating metal ion filtration apparatus |
| 04/10/2002 | EP1194602A1 Method for reducing non-ferrous metal content in slag in the production of non-ferrous metals occurring in suspension smelting furnace |
| 04/10/2002 | CN1344189A Casting of high purity oxygen free copper |
| 04/09/2002 | US6368380 Method of melt-removing impurity elements from iron |
| 04/04/2002 | WO2002027072A1 Hydrometallurgical processes utilising solutions containing dissolved ferric and/or ferrous salts |
| 04/03/2002 | CN1082031C Method of biotreatment for solid materials in nonstirred surface bioreactor |
| 03/28/2002 | WO2002024966A1 Recovery of nickel and cobalt values from a sulfidic flotation concentrate by chloride assisted oxidative pressure leaching in sulfuric acid |
| 03/28/2002 | WO2001089654A3 Acid stable membranes for nanofiltration |
| 03/27/2002 | CN1342218A Copper recovery process |
| 03/26/2002 | CA2356050C Process for the solvent extraction of nickel and cobalt values in the presence of magnesium ions from a solution |
| 03/26/2002 | CA2356048C Process for the recovery of nickel and/or cobalt from a concentrate |
| 03/21/2002 | US20020034465 Copper; solvent extraction, electrowinning |
| 03/21/2002 | US20020033566 Oxygen-enriched air feed for a non-ferrous metal production unit |
| 03/21/2002 | US20020033076 Comminution, slurrying, heating, controlling temperature |
| 03/20/2002 | EP1188843A1 Process and installation for supplying oxygen enriched air to a production unit of non-ferrous metals |
| 03/20/2002 | CN1081239C Process for the leaching of chalcopyrite |
| 03/18/2002 | CA2357371A1 Oxygen-enriched air feed for a non-ferrous metal production unit |
| 03/14/2002 | WO2002020856A1 Manufacturing method for zinc sulfate, manganese sulfate and ferrous sulfate |
| 03/06/2002 | CN1338893A Liquid for reducing copper oxides and process thereof |
| 02/26/2002 | US6350354 Hydrometallurgical process |