| Patents for C22B 15 - Obtaining copper (5,364) |
|---|
| 10/06/1999 | CN1045476C Chloride assisted hydrometallurgical copper extraction |
| 10/05/1999 | US5961940 Method for the treatment of bismuth-containing sulphide ores or concentrates of such ore |
| 09/30/1999 | WO1999049105A1 Fluoboric acid control in a ferric fluoborate hydrometallurgical process for recovering metals |
| 09/23/1999 | WO1999047715A1 Method for transforming slag derived from non-iron metallurgy |
| 09/21/1999 | CA2094192C Process for separating contaminants from organic phases during hydrometallurgical extraction of metals |
| 09/16/1999 | WO1999046414A2 Process for the desulphurization of blister copper |
| 09/15/1999 | EP0833961B1 Ammoniacal metal solution recycling process |
| 09/15/1999 | EP0646185B1 Production of metals from minerals |
| 09/11/1999 | CA2231717A1 Use of gaseous mixtures containing an inert gas and an oxygen containing gas in desulphurization of blister copper during anode refining |
| 08/31/1999 | US5945077 Separation of copper from chalcopyrite using hydrochloric acid |
| 08/19/1999 | WO1999041420A1 Process and apparatus for the continuous refining of blister copper |
| 08/19/1999 | WO1999041419A1 Forebay for a metallurgical furnace |
| 08/18/1999 | EP0752013B1 Hydrometallurgical extraction process |
| 08/17/1999 | US5938128 Process and apparatus for treating composite elements |
| 08/11/1999 | CN1044620C Refining agent for molten copper and its prepn. method |
| 08/10/1999 | US5935409 Fluoboric acid control in a ferric fluoborate hydrometallurgical process for recovering metals |
| 08/04/1999 | EP0836523A4 Process for making shaped copper articles |
| 07/28/1999 | EP0703993B1 Method for treatment of residues from organochlorosilane and/or chlorosilansynthesis |
| 07/22/1999 | WO1999036582A1 Method for microwave induced oxidation of sulphidic ores and ore concentrates without the production of sulphur dioxide gas |
| 07/21/1999 | EP0930373A1 Recovery of nickel and/or cobalt from a hydroxide concentrate with an ammonium leach solution |
| 07/21/1999 | EP0930372A1 Use of alkxoylated alcoholes or amines as modifiers in the seperation of metalions from aqueous solutions by solvent-extraction |
| 07/06/1999 | US5919674 Copper recovery |
| 06/29/1999 | US5917116 Milling copper sulfide or chalocopyrite mineral, oxidatively leaching the activated copper mineral in oxygen in presence of chloride ion to recover copper |
| 06/23/1999 | EP0924307A1 Solvent extraction of cobalt and nickel values from a magnesium containing solution |
| 06/23/1999 | CN1220319A Improved beta-diketones for extraction of copper from aqueous ammoniacal solutions |
| 06/17/1999 | CA2243925A1 Improved beta-diketones for the extraction of copper from aqueous ammoniacal solutions |
| 06/16/1999 | CN1043667C Copper converting |
| 06/16/1999 | CN1043665C Copper fine powdery agglomeration and preparing process thereof |
| 06/15/1999 | US5912401 Carbon material for reducing fe3o4 and oxidation |
| 06/10/1999 | DE19752800A1 Ultra-fine spherical metal particles are precipitated from solution with finely divided white phosphorus |
| 06/09/1999 | CN1219205A Process for treatment of particulat matter by fuidisation, and vessel with apparatus to carry out the treatment |
| 06/01/1999 | US5908605 Extraction of aqueous ammoniacal solutions containing copper values; beta-diketone copper extractant; aqueous acidic stripping solution; hydroxy oxime in a catalytic amount |
| 05/25/1999 | US5906749 Method for recovering metals from solutions |
| 05/25/1999 | CA2085791C Hydrometallurgical process for the treatment of copper-bearing ore |
| 05/19/1999 | EP0766749B1 Use of hydrocarbon-soluble aminomethylene phosphonic acid derivatives in the solvent extraction of iron ions from aqueous solutions |
| 05/19/1999 | CN1216933A Method and apparatus for recirculating a heavier solution from the separation part of two separable solutions into a mixing unit |
| 05/19/1999 | CN1216932A Method and apparatus for adjustion the boundary surface between two conducting both solution out of the separation part |
| 05/14/1999 | WO1999023263A1 Method for removing contaminants from process streams in metal recovery processes |
| 05/11/1999 | US5902977 Flotation cell and method |
| 05/11/1999 | US5902474 Chloride assisted hydrometallurgical extraction of metal |
| 05/05/1999 | CN1215760A Process for smelting red copper |
| 05/05/1999 | CN1043248C Hydrometallurgical recovery of metals from complex ores |
| 04/20/1999 | US5895633 Solvent extraction process for recovering copper from copper-containing solutions |
| 04/14/1999 | EP0908525A1 Process for the recovery of metals. |
| 04/14/1999 | EP0879301A4 Improved beta-diketones for the extraction of copper from aqueous ammoniacal solutions |
| 04/06/1999 | US5891215 Molten metal degassing and filtering methods |
| 04/06/1999 | US5890889 Shaft furnace |
| 04/06/1999 | CA2113039C Process for biolixiviating copper sulfides by indirect contact with separation of effects |
| 04/01/1999 | WO1999015706A1 Method of moderating temperature peaks in and/or increasing throughput of a continuous, top-blown copper converting furnace |
| 04/01/1999 | CA2304651A1 Method of moderating temperature peaks in and/or increasing throughput of a continuous, top-blown copper converting furnace |
| 03/30/1999 | US5888458 Melting furnace of metals and melting method thereof |
| 03/30/1999 | US5888270 Copper converting |
| 03/30/1999 | CA2136417C Method for melting copper |
| 03/24/1999 | EP0804624B1 Chloride assisted hydrometallurgical copper extraction |
| 03/24/1999 | CN1211630A Pollution-free fire smelting method for Cu-Ni sulphide mine |
| 03/23/1999 | CA2052170C Pyrometallurgical process for treating a feed material |
| 03/10/1999 | EP0815289A4 Process for electrowinning of copper matte |
| 03/10/1999 | CN1210563A Improved beta-diketones for extraction of copper from aqueous ammoniacal solutions |
| 03/10/1999 | CN1210152A Copper recovery |
| 03/04/1999 | WO1999010546A1 Process for the extraction of metals from ammoniacal solution |
| 03/04/1999 | CA2302353A1 Process for the extraction of metals from ammoniacal solution |
| 02/25/1999 | WO1999009226A1 Chloride assisted hydrometallurgical extraction of nickel and cobalt from sulphide or laterite ores |
| 02/25/1999 | WO1999009225A1 Chloride assisted hydrometallurgical extraction of copper from sulphide ore materials |
| 02/25/1999 | DE19737452A1 Microbiological recovery of dissolved copper@ as pure metal |
| 02/23/1999 | US5874055 Oxidizing ore under pressure in presence of acidic solution containing halide and sulfate ions to produce slurry,filtering, solvent extracting filtrate to produce copper concentrate, recycling depleted raffinate |
| 02/09/1999 | US5869012 Chloride assisted hydrometallurgical extraction of metal |
| 01/27/1999 | EP0871800A4 Method for recovering copper |
| 01/27/1999 | CN1041845C Method for treatment of residues from organochlorosilane and/or chlorosilane synthesis |
| 01/05/1999 | US5855858 Process for the recovery of nickel and/or cobalt from an ore or concentrate |
| 01/05/1999 | CA2108216C Conversion of non-ferrous matte |
| 12/30/1998 | EP0795046A4 Process for making copper metal powder, copper oxides and copper foil |
| 12/29/1998 | US5853657 Reduced dusting bath system for metallurgical treatment of sulfide materials |
| 12/23/1998 | EP0885170A1 Method of biotreatment for solid materials in a nonstirred surface bioreactor |
| 12/23/1998 | EP0854765A4 Process for the production of ultrafine particles |
| 12/22/1998 | US5851303 Method for removing metal surface contaminants from silicon |
| 12/15/1998 | US5850047 Production of copper powder |
| 12/15/1998 | US5849061 Process for refining high-impurity copper to anode copper |
| 12/10/1998 | WO1998055209A1 Method and system for selective removal of contamination from gas flows |
| 12/02/1998 | CN1200770A Method for treatment of mismuth-contg. sulphite ores or concentrates of such ore |
| 11/25/1998 | EP0879301A1 Improved beta-diketones for the extraction of copper from aqueous ammoniacal solutions |
| 11/25/1998 | CN1199853A Method for cleaning slag in electric furnace |
| 11/24/1998 | CA2111612C Conversion of non-ferrous sulfides |
| 11/19/1998 | WO1998051828A1 Sulfide mineral concentrate bioleaching |
| 11/18/1998 | EP0877829A1 Oxygen smelting of copper and/or nickel sulphide ore concentrates |
| 10/29/1998 | WO1998048065A1 Method for recycling brass foundry waste |
| 10/21/1998 | EP0872321A2 Method for processing discarded electric motors |
| 10/21/1998 | EP0871800A1 Method for recovering copper |
| 10/14/1998 | CN1196096A Copper recovery process |
| 10/14/1998 | CA2234527A1 Method for cleaning slag in an electric furnace |
| 10/13/1998 | US5820653 Process for making shaped copper articles |
| 09/29/1998 | CA2097003C Method for adjusting the supply of a reaction gas to be fed into a smelting furnace, and a multipurpose burner designed for realizing the same |
| 09/15/1998 | US5807479 Process for recovering copper from copper-containing material |
| 09/15/1998 | US5807421 Hydrometallurgical extraction process |
| 09/11/1998 | WO1998039492A1 Reoximation of metal extraction circuit organics |
| 09/11/1998 | WO1998039491A1 A process for the leaching of chalcopyrite |
| 09/11/1998 | CA2289463A1 Reoximation of metal extraction circuit organics |
| 09/09/1998 | EP0862658A1 A method for the treatment of bismuth-containing sulphide ores or concentrates of such ore |
| 09/02/1998 | CN1192165A Process for making shaped copper articles |
| 08/26/1998 | CN1191521A Method of biotreatment for solid materials in nonstirred surface bioreactor |
| 08/19/1998 | CN2288185Y Mating device for producing oxygen-free copper with composition copper |