| Patents for C22B 23 - Obtaining nickel or cobalt (3,818) |
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| 08/23/2000 | CN1055731C Device and method for recovery of cadmium and nickel |
| 08/22/2000 | CA2270850C Metal recovery from skimmed slag |
| 08/09/2000 | EP1026268A1 Nickel fine powder and method for preparing the same |
| 08/09/2000 | EP1025269A1 Process for the extraction of metals from ammoniacal solution |
| 08/02/2000 | EP0862659B1 METHOD FOR RECOVERING NICKEL FROM HIGH MAGNESIUM-CONTAINING Ni-Fe-Mg LATERITIC ORE |
| 07/18/2000 | US6090293 Flocculating process; organic flocculent based on a copolymer derived from slightly anionic acrylic acid |
| 07/18/2000 | US6090179 Decomposing a halogen-containing metal compound to a metal halide and reducing agent by heat treatment in a stationary, nonoxidizing atmosphere, reducing the metal halide using the reducing agent and collecting a high purity metal powder |
| 07/12/2000 | CN1259408A Decomposition treatment method for cohesive magnet |
| 07/06/2000 | WO2000039350A1 Method for extracting anions of ivb to viii metals using alkyl-substituted 1,3-diaminopropanes |
| 07/06/2000 | CA2355853A1 Method of extracting anions of metals of groups ivb to viii by means of alkyl-substituted 1,3-diaminoprpopanes |
| 07/05/2000 | CN1258754A Recovery process of waste cobalt-molybdenum catalyst |
| 06/28/2000 | EP1012352A1 Chloride assisted hydrometallurgical extraction of nickel and cobalt from sulphide or laterite ores |
| 06/28/2000 | EP1012351A1 Chloride assisted hydrometallurgical extraction of copper from sulphide ore materials |
| 06/22/2000 | WO2000036167A1 Composition of oxime and hydroxy-ester for the solvent extraction of metals |
| 06/21/2000 | CN1053705C Cobalt-bearing oxidized ore treatment by microwave-heat plasma |
| 05/23/2000 | CA2134490C Process for the preparation of a high purity cobalt intermediate |
| 05/18/2000 | WO2000028093A1 Recovering metals from soil |
| 05/17/2000 | CN1253186A Process for desulfurizing high-glacial nickel |
| 05/11/2000 | WO2000026432A1 Nickel carbonyl vapour deposition apparatus and process |
| 05/10/2000 | EP0999566A2 A method for decomposition and treatment of bond magnet |
| 05/10/2000 | CN1052265C Chloride assisted hydrometallurgical extraction of copper |
| 05/04/2000 | WO2000025382A1 Method and system for recovering valuable metal from waste storage battery |
| 05/02/2000 | CA2138777C Production of metals from minerals |
| 04/25/2000 | US6054105 Process for the solvent extraction of nickel and cobalt values in the presence of magnesium ions from a solution |
| 04/25/2000 | US6053327 Process for enriching nickel-bearing oxide ores |
| 04/19/2000 | EP0993510A1 Method for phytomining of nickel, cobalt and other metals from soil |
| 04/13/2000 | DE19846093A1 Metallic nickel is recovered from wastes, e.g. electroplating sludge, by dissolution as sulfate, precipitation as hydroxide, calcination to oxide and reduction with hydrogen |
| 04/11/2000 | US6048578 Closed loop carbon monoxide self-contained nickel carbonyl deposition process |
| 04/05/2000 | CN1249354A Process for efficiently extracting cobalt compound from leftover containing cobalt |
| 03/21/2000 | US6039790 Leaching using nickel sulfate and sulfuric acid, reducing to nickel metal, leaching an iron bearing solution after acidifying to form nickel sulfate, using formed nickel sulfate solution as leaching solution |
| 03/01/2000 | EP0948655A4 Recovery of nickel from bioleach solution |
| 02/24/2000 | WO2000009782A1 Method for the removal of sulfur in the nickel leaching process |
| 02/10/2000 | WO2000006328A1 A process for manufacturing of metallic powder |
| 02/01/2000 | US6019813 Cobalt metal agglomerates, process for producing the same and their use |
| 01/18/2000 | US6015447 Cobalt metal agglomerates, a method of producing them and their use |
| 01/05/2000 | EP0832306B1 Chloride assisted hydrometallurgical extraction of nickel and cobalt from sulphide ores |
| 12/14/1999 | US6001763 Feeding waste catalyst into pyrometallurgical reaction zone to produce alloy of manganese, cobalt and carbon, liberating off-gases including carbon monoxide, hydrogen, and bromine, forming powder, digesting with acetic acid to form acetates |
| 12/09/1999 | WO1999063121A1 Melt and melt coating sulphation process |
| 12/09/1999 | CA2333967A1 Melt and melt coating sulphation process |
| 12/08/1999 | CN1237920A Production of aromatic carboxylic acids and recovery of Co/Mn cattalyst from ash |
| 12/01/1999 | CN1046966C Wet-metallurgy method for recovering metal |
| 11/30/1999 | US5993635 Processing a sulphide mineral composition which at least partly comprises an iron-containing mineral. |
| 11/24/1999 | CN1236014A Method for leaching nickel from nickel matte |
| 11/09/1999 | US5980841 Method for recovering reusable elements from rare earth-nickel alloy |
| 11/02/1999 | US5976218 Process for the recovery of nickel |
| 10/20/1999 | CN1232538A Method for feeding and directing reaction gas and solids into smelting furnace and multiadjustable burner designed for said purpose |
| 10/19/1999 | US5968228 Efficient, low temperature reduction of cobalt oxide with ammonia or nitrogen/hydrogen gas mixture while continuously raising temperature to between 300 to 550 degrees c to yield high purity cobalt |
| 10/13/1999 | EP0948655A1 Recovery of nickel from bioleach solution |
| 10/13/1999 | CN1045624C Method for leaching nickel-copper matte |
| 10/06/1999 | EP0946300A1 Production of aromatic carboxylic acids and recovery of co/mn cattalyst from ash |
| 10/05/1999 | US5961938 Adding a diluted nitric acid solution to a slurry of the rare earth-iron alloy containing cobalt, while maintaining ph of a resulting mixture at 5 or higher; filtering an undissolved residue containing iron from a rare earth-containing nitrate |
| 09/23/1999 | WO1999047715A1 Method for transforming slag derived from non-iron metallurgy |
| 09/15/1999 | EP0646185B1 Production of metals from minerals |
| 08/31/1999 | US5944872 Method for phytomining of nickel, cobalt and other metals from soil |
| 07/21/1999 | EP0930373A1 Recovery of nickel and/or cobalt from a hydroxide concentrate with an ammonium leach solution |
| 07/20/1999 | US5925862 Process for the recovery of cobalt from ores containing metal sulfides |
| 06/23/1999 | EP0924307A1 Solvent extraction of cobalt and nickel values from a magnesium containing solution |
| 06/08/1999 | CA2054205C Process for recovering valuable metals from spent catalysts |
| 05/26/1999 | EP0918094A1 Hydrometallurgical process for the recovery of nickel and cobalt by ammoniacal leaching |
| 05/19/1999 | EP0915727A1 Process for the recovery of nickel |
| 05/05/1999 | CN1215761A Method for recovery of Co-Mn metal from p-phthalic acid residual liquid |
| 04/28/1999 | EP0910295A1 Cryoplasty device and method |
| 03/31/1999 | EP0905265A1 Method of reducing water quantity in slurries of oxidic nickel ores by injection of acrylic flocculant |
| 03/30/1999 | US5888462 Method of solvent extraction of nickel sulfate solutions |
| 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 |
| 03/16/1999 | CA2137124C Pressure leaching of nickel and cobalt sulphides with chlorine under controlled redox potential conditions |
| 03/09/1999 | CA2145054C A process for the extraction and separation of nickel and/or cobalt |
| 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 |
| 02/11/1999 | WO1999006603A1 Selective precipitation of nickel and cobalt |
| 02/10/1999 | EP0896070A1 Process of upgrading nickel bearing oxidic ores |
| 02/09/1999 | US5868735 Cryoplasty device and method |
| 01/13/1999 | EP0828577B1 Cobalt metal agglomerates, process for producing the same and their use |
| 01/07/1999 | DE19727276A1 Removal of nickel from fatty acid residues e.g. from catalysed hydrogenation of fats |
| 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 | WO1998059080A1 Method for phytomining of nickel, cobalt and other metals from soil |
| 12/30/1998 | EP0792199B1 Micron-sized nickel metal powder and a process for the preparation thereof |
| 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 |
| 11/24/1998 | CA2111612C Conversion of non-ferrous sulfides |
| 11/18/1998 | EP0877829A1 Oxygen smelting of copper and/or nickel sulphide ore concentrates |
| 10/30/1998 | CA2236124A1 Method for purifying nickel sulfate with acid extractant |
| 10/14/1998 | CN1195710A Method for preparing cubic texture nickel-base strip |
| 09/30/1998 | CN1194602A Cobalt metal agglomerates, process for producing the same and their use |
| 09/30/1998 | CN1040030C Method for producing high grade nickel matte from at least partly pyrometallurgically refined nickel-bearing raw materials |
| 09/11/1998 | WO1998038934A1 Cryoplasty device and method |
| 09/09/1998 | EP0862659A1 METHOD FOR RECOVERING NICKEL FROM HIGH MAGNESIUM-CONTAINING Ni-Fe-Mg LATERITIC ORE |
| 09/09/1998 | CN1192785A Method for recovering nickel hydrometallurgically from two different nickel mattes |
| 08/27/1998 | WO1998037247A1 Hydrometallurgical process for the recovery of nickel and cobalt by ammoniacal leaching |
| 08/27/1998 | CA2256560A1 Hydrometallurgical process for the recovery of nickel and cobalt by ammoniacal leaching |
| 08/26/1998 | CN1191521A Method of biotreatment for solid materials in nonstirred surface bioreactor |
| 07/29/1998 | EP0854765A1 Process for the production of ultrafine particles |
| 07/29/1998 | EP0828552A4 Process for recovery of metal ions |
| 07/28/1998 | US5787353 Fluorination of uranium oxide and/or uranyl fluoride; carbonylation of metallic nickel with carbon monoxide and a gaseous promoter |
| 07/08/1998 | CN1187220A Chloride assisted hydrometallurgical extraction of metal |