| Patents for C22B 23 - Obtaining nickel or cobalt (3,818) |
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| 10/03/1995 | CA1337156C Method and apparatus for the conversion of non-ferrous molten metal matte |
| 09/20/1995 | EP0364463B1 Separation and recovery of nickel and cobalt in ammoniacal systems |
| 09/13/1995 | EP0670911A1 Process to convert non-ferrous metal such as copper or nickel by oxygen enrichment |
| 08/24/1995 | DE19505339A1 Suspension melting of finely divided sulphur-contg. ores |
| 08/23/1995 | CN1107183A Method and apparatus for suspension smelting |
| 08/09/1995 | EP0666108A1 Process for recovering and re-using cobalt and tungsten from reaction liquors |
| 08/09/1995 | EP0665900A1 Production of metallic cobalt powder. |
| 08/08/1995 | CA2141892A1 Process for recovering and re-using cobalt and tungsten from reaction liquors |
| 08/01/1995 | US5437705 Placing scrap in inert atmosphere in furnace with oxygen getter, heating in stages to vaporize water, other substances, cadmium, condensing cadmium in connected chamber, recovering nickel from furnace |
| 07/25/1995 | US5435833 Oxidation of iron |
| 07/11/1995 | US5431892 Process for recovering valuable metal from waste catalyst |
| 07/11/1995 | US5431788 Chloride assisted hydrometallurgical copper extraction |
| 07/05/1995 | EP0660881A1 Recovery of nickel |
| 06/21/1995 | EP0658215A1 Extraction or recovery of metal values |
| 05/03/1995 | EP0651062A1 Process for the preparation of a high-purity cobalt intermediate |
| 04/25/1995 | CA1335332C Separation and recovery of nickel and cobalt in ammoniacal systems |
| 04/25/1995 | CA1335331C Non-ferrous metal recovery from metallurgical slag |
| 04/06/1995 | WO1995009250A1 Process to convert non-ferrous metal such as copper or nickel by oxygen enrichment |
| 04/05/1995 | EP0646185A1 Production of metals from minerals |
| 03/22/1995 | CN1027978C Method and apparatus for manufacturing of high-grade nickel matte |
| 03/15/1995 | EP0643147A2 The production of ferronickel from nickel containing laterite |
| 03/14/1995 | US5397380 Recovery of metal values |
| 03/08/1995 | EP0641394A1 Oxygen smelting. |
| 02/28/1995 | US5393320 Leaching process for nickel cobalt and manganese ores |
| 01/31/1995 | US5385600 Separating into two concentrates; one for pyrometallurgy and one for hydrometallurgy |
| 01/17/1995 | US5382278 Pyrometallurgy, exchange reaction with iron oxide removes chromium to slag phase, recovering nickel and cobalt |
| 01/12/1995 | WO1995001461A1 Method for extracting metals from catalysts on the basis of al2o¿3? |
| 01/03/1995 | US5377920 Method for the disposal of nickel-cadmium or nickel-hydride cells |
| 12/20/1994 | US5374299 In-flight oxidation in first reaction zone; sulfidation or reduction of reaction products in second zone |
| 11/16/1994 | CN1095112A Device and process for the recovery of cadmium and nickel |
| 11/02/1994 | EP0658215A4 Extraction or recovery of metal values. |
| 10/11/1994 | CA1332286C Method of refining oxide nickel ore or the like |
| 08/24/1994 | CN1091157A Production of metal from minerals |
| 07/27/1994 | EP0608098A1 Process for the recovery of nickel and/or cadmium and apparatus therefor |
| 07/26/1994 | US5332414 Method for producing high-grade nickel matte and metallized sulfide matte |
| 05/11/1994 | WO1994010350A1 Production of metallic cobalt powder |
| 05/11/1994 | CN1024469C Method of nickel retrieved from waste catalyst by pyrogenic process |
| 04/19/1994 | EP0660881A4 Recovery of nickel. |
| 04/06/1994 | EP0590043A1 Method for processing complex metal sulphide materials |
| 03/16/1994 | EP0410996B1 A process of recovering non-ferrous metal values, especially nickel, cobalt, copper and zinc, by using melt and melt coating sulphation, from raw materials containing said metals |
| 03/09/1994 | EP0585701A1 Method of treating nickel-cadmium of nickel-hydride cells |
| 03/08/1994 | CA1327452C Separation of nickel from copper in autoclave |
| 02/09/1994 | CN1023718C Method for processing of nickle oxide ore |
| 01/25/1994 | US5281252 Providing molten bath of sulfide material, injecting particles of sulfide below surface, bottom stirring, top blowing with oxygen containing gas to form metal and sulfur containing gas |
| 01/18/1994 | CA1326138C Removal of copper converter mush |
| 01/13/1994 | DE4320283A1 Enrichment or complete processing of nickel sulphide concentrate - by sepn. into two streams of higher and lower valuable metal content which are subjected to pyrometallurgical and hydrometallurgical processing respectively |
| 01/06/1994 | WO1994000606A1 Production of metals from minerals |
| 12/23/1993 | DE4320319A1 Producing mattes of highly enriched nickel and metallised sulphide(s) - includes successive use of flame melting and electric furnaces |
| 12/23/1993 | DE4320314A1 Valuable metal selective sepn. without jarosite or double salt formation - by neutralising organic extn. soln. and exchanging ammonium or alkali ions in extractant with metal ions before main extn. stage |
| 12/09/1993 | WO1993024666A1 Oxygen smelting |
| 12/09/1993 | CA2136425A1 Oxygen smelting |
| 12/07/1993 | CA1325068C Depressant for flotation separation of polymetallic sulphidic ores |
| 09/21/1993 | US5246481 Production of metallic powder |
| 08/31/1993 | US5240496 Pretreatment of chromium-bearing metal scrap to remove chromium |
| 08/24/1993 | US5238663 Nickel recovery process |
| 06/30/1993 | EP0548538A1 Transition metal decontamination process |
| 06/23/1993 | EP0547744A1 Process for recovering metal from oxide ores |
| 06/23/1993 | CN1021348C Method for smelting reduction of ni ore |
| 06/23/1993 | CN1021347C Method for smelting reduction of ni ore |
| 06/08/1993 | US5217585 Transition metal decontamination process |
| 06/04/1993 | CA2084252A1 Low temperature thermal upgrading of lateritic ores |
| 06/01/1993 | US5215571 Conversion of non-ferrous matte |
| 04/29/1993 | WO1993008310A1 Extraction or recovery of metal values |
| 04/29/1993 | CA2119240A1 Extraction or recovery of metal values |
| 03/31/1993 | CN1070429A Method for manufacturing magn sium manganese intermediate alloy |
| 03/09/1993 | US5192418 Metal recovery method and system for electroplating wastes |
| 01/21/1993 | WO1993001320A1 Recovery of nickel |
| 01/21/1993 | CA2113086A1 Recovery of nickel |
| 01/12/1993 | US5178666 Low temperature thermal upgrading of lateritic ores |
| 12/29/1992 | US5174812 Separation and recovery of nickel and cobalt in ammoniacal systems |
| 12/20/1992 | WO1992022673A1 Method for processing complex metal sulphide materials |
| 12/20/1992 | CA2102791A1 Method for processing complex metal sulphide materials |
| 09/15/1992 | US5147619 Feeding a sludge containing fine particles of nickel catlayst and fat into a fluidized bed, combustion or degradation of fat to produce waste gases and separating catalysts particles from fluidized bed and waste gases |
| 09/08/1992 | CA1307332C Automatic tuyere puncher |
| 07/29/1992 | EP0236480B1 Production of hydrogen by deserpentinization of ultramafic rock |
| 05/27/1992 | EP0487379A2 Method of anti-pollution treatment of a used refining catalyst and complete recuperation of the different metal constituents of this catalyst |
| 05/27/1992 | EP0487368A2 Antipolluting treatment of a used refining catalyst and recuperation of metals |
| 05/19/1992 | CA1300893C Fluidised bed process |
| 05/13/1992 | CA2055280A1 Process for antipollution treatment of a spent refining catalyst and total recovery of different metal constituents of said catalyst |
| 05/01/1992 | CA2054510A1 Process for antipollution treatment of a spent refining catalyst and recovery of metals |
| 04/28/1992 | US5108721 Leaching in dilute sulfuric acid to solubilize nickel, leaching again to solubilize copper and tellurium |
| 04/01/1992 | EP0478322A1 Pyrometallurgical process for treating a feed material |
| 03/24/1992 | CA1297681C Direct smelting process for sulfide ores |
| 03/18/1992 | EP0475308A1 Method for treating nickel magnesium silicate ores |
| 03/18/1992 | EP0475289A1 Method of recovering nickel |
| 03/14/1992 | CA2051016A1 Nickel recovery process |
| 03/13/1992 | CA2050945A1 Method for treating nickel magnesium silicate ores |
| 02/26/1992 | EP0471816A1 Process for recovering heavy metals from spent catalysts |
| 02/19/1992 | CN1058810A Method of nickel retrieved from waste catalyst by pyrogenic process |
| 02/11/1992 | CA1295486C Extraction of transition metals from organic solutions |
| 01/21/1992 | US5082638 Process of recovering non-ferrous metal values, especially nickel, cobalt, copper and zinc, by using melt and melt coating sulphation, from raw materials containing said metals |
| 01/14/1992 | CA1294131C Process for reduction smelting of materials containing base metals |
| 01/01/1992 | CN1057489A New method for processing of nickel oxide ore |
| 11/19/1991 | US5066469 Leaching cobalt from metal-containing particles |
| 11/13/1991 | EP0220198B1 Preparing metal compounds by pyrolysis |
| 09/10/1991 | US5047082 Adding carbon, vlowing oxygen, discharging slag |
| 09/02/1991 | WO1991013179A1 Process for recovering valuable metals from spent catalysts |
| 07/09/1991 | CA1285792C Process for preparing finely divided metal powders |
| 06/26/1991 | EP0434053A1 Process for treatment of nickel magnesium silicate ores |
| 06/21/1991 | CA2032279A1 Process for treatment of nickel magnesium silicate ores |