| Patents for C22B 23 - Obtaining nickel or cobalt (3,818) |
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| 01/19/1982 | US4311520 Process for the recovery of nickel, cobalt and manganese from their oxides and silicates |
| 01/19/1982 | CA1116582A1 Process for extracting vanadium from deactivated catalysts |
| 01/19/1982 | CA1116412A1 Recovery of nickel and cobalt from leach slurries |
| 01/13/1982 | EP0043646A1 Separation of chromium from scrap |
| 01/12/1982 | US4310350 Recovering non-volatile metals from dust containing metal oxides |
| 12/29/1981 | US4308058 Blasting oxygen-enriched air into metal layer while maintaining layer thickness |
| 12/29/1981 | US4307871 Apparatus for automatically punching the tuyeres of a converter |
| 12/29/1981 | CA1115066A1 Process for the production of extra fine cobalt powder |
| 12/08/1981 | US4304644 Autoclave oxidation leaching of sulfide materials containing copper, nickel and/or cobalt |
| 12/01/1981 | CA1113253A1 Process for the treatment of raw materials containing arsenic and metal |
| 11/25/1981 | EP0040243A1 Process and apparatus for producing metals at porous hydrophobic catalytic barriers. |
| 11/24/1981 | CA1112880A1 Hydrometallurgical process for the treatment of oxides and ferrites which contain iron and other metals |
| 11/17/1981 | US4301125 Comprising peroxymonosulfuric acid |
| 11/17/1981 | US4300949 Method for treating sulfide raw materials |
| 11/10/1981 | CA1112052A1 Refining method for non ferrous metal mattes |
| 11/03/1981 | CA1111825A1 Regeneration of organic extractants containing alpha hydroxyoximes |
| 10/13/1981 | CA1110456A1 Process for recovering nickel, cobalt and manganese from their oxide and silicate ores |
| 10/06/1981 | CA1110221A1 Process for extracting vanadium from deactivated catalysts |
| 09/29/1981 | US4292282 Process for recovering metals from catalysts for the hydrodesulfurization of hydrocarbons |
| 09/01/1981 | CA1107975A1 Process for selective extraction of metal ions from aqueous solutions and extracting agents suitable for that purpose |
| 08/26/1981 | EP0034434A1 Process for removing metal values from oxidic materials |
| 08/25/1981 | CA1107678A1 Nickel recovery from sulfur-deficient mattes |
| 08/18/1981 | CA1107079A1 Process for removing zinc from a nickel solution by extraction |
| 08/11/1981 | CA1106617A1 Autoclave oxidation leaching of sulfide materials containing copper, nickel and/or cobalt |
| 08/04/1981 | US4281821 Method of controlling the suction gas pressure of a sulfuric acid plant for treatment of smelter exhaust gas |
| 07/28/1981 | US4280839 Recovery of metal values from a metal bearing source of nickel and vanadium |
| 07/28/1981 | CA1105972A1 Electric arc furnace operation |
| 07/21/1981 | CA1105267A1 Process for the extraction of metal values from manganese nodules |
| 07/14/1981 | US4278463 Process for recovering cobalt |
| 07/14/1981 | CA1104835A1 Method of and electric furnace for processing nonferrous molten slags |
| 07/07/1981 | CA1104350A1 Separation of cobalt and nickel by solvent extraction |
| 06/30/1981 | US4276266 Process for recovering metal elements from carbonaceous products |
| 06/30/1981 | US4276083 Recovery of metal values from a metal bearing source of nickel and vanadium |
| 06/30/1981 | CA1103936A1 Process for purifying nickel sulfate solution |
| 06/30/1981 | CA1103935A1 Selective precipitation of nickel and cobalt from acidic sulfate solution |
| 06/16/1981 | US4273576 Continuous shielded arc melting, controlling and adjusting slag le |
| 06/16/1981 | CA1103040A1 Leaching of nickeliferous oxide ores |
| 06/16/1981 | CA1103039A1 Leaching of nickeliferous oxide ores containing iron and/or aluminum |
| 06/09/1981 | CA1102558A1 Reverberatory smelting of non-ferrous metal sulfide ores |
| 05/26/1981 | CA1101679A1 Leaching of ni-cu-fe-s matte |
| 05/20/1981 | EP0028968A1 Process for treating a metal in a melting bath |
| 05/19/1981 | CA1101225A1 Cobalt ion exchange process |
| 05/13/1981 | EP0028570A1 Process for refining a molten metal by oxygen injection |
| 05/12/1981 | US4266971 Continuous process of converting non-ferrous metal sulfide concentrates |
| 05/12/1981 | CA1100763A1 Hydrometallurgical leaching and refining of nickel- copper concentrates |
| 04/30/1981 | WO1981001159A1 Process and apparatus for producing metals at porous hydrophobic catalytic barriers |
| 04/21/1981 | CA1099517A1 Method for the reduction, extraction and separation of metals and/or metal compounds from metal containing raw materials |
| 04/14/1981 | US4261737 Leaching ore with ammoniacal ammonium salt solution, adsorption oncarbon which has been pretreated with acid |
| 04/07/1981 | CA1098717A1 Flash smelting in confined space |
| 04/07/1981 | CA1098714A1 Process for recovering vanadium accumulated on spent catalyst |
| 04/07/1981 | CA1098713A1 Selective sulfation process for partitioning ferrous and non-ferrous values in an ore |
| 03/24/1981 | CA1097927A1 Nickel recovery |
| 03/17/1981 | CA1097506A1 Treatment of dissolved basic nickel carbonate |
| 03/03/1981 | CA1096837A1 Process for upgrading oxidised nickeliferous ores of lateritic origin |
| 03/03/1981 | CA1096636A1 Hydrometallurgical process for the selective dissolution of mixtures of oxy compounds |
| 03/03/1981 | CA1096634A1 Method for processing oxidized nickel ores |
| 02/24/1981 | CA1096514A1 Use of thiouracils as selective depressants for the flotation separation of copper and nickel sulphide minerals |
| 02/17/1981 | CA1095731A1 Stripping of cobalt from nickel-cobalt loaded organic |
| 02/17/1981 | CA1095730A1 Nickel matte chloridizing under molten salt cover |
| 02/10/1981 | CA1095260A1 Nickel sulfide benefication process |
| 02/04/1981 | EP0023428A1 Liquid-liquid process for extracting metals using organo-phosphorous compounds |
| 02/03/1981 | CA1094817A1 Hydrometallurgical recovery of metal values |
| 01/20/1981 | CA1094012A1 Atmospheric leach ion-exchange process for treating iron-containing nickel-copper matte |
| 01/20/1981 | CA1093839A1 Hydrometallurgical recovery of metal values |
| 01/06/1981 | US4243411 Reduction of metal sulfides |
| 12/30/1980 | CA1092477A1 Fluidizing means for reducing viscosity of slurries |
| 12/23/1980 | US4241031 Dissolution of nickeliferous sulfide material in HCl |
| 12/10/1980 | EP0020186A1 Method of converting non-ferrous metal mattes to the metal or metal sulphide |
| 12/09/1980 | US4238228 Non-ferrous metal treatment |
| 12/09/1980 | CA1091042A1 Solvent-extraction process for recovery and separation of metal values |
| 12/09/1980 | CA1091040A1 Method of recovering metals out of soot originating from the combustion of oil |
| 12/09/1980 | CA1091038A1 Cobalt stripping process |
| 12/09/1980 | CA1091036A1 Roast-reductive leach process for copper recovery |
| 12/02/1980 | US4236981 Electrolysis of nickle chloride solution to recover nickle of high purity at the cathode |
| 12/02/1980 | US4236915 Producing a metal matte |
| 12/02/1980 | CA1090586A1 Process for smelting nickel from nickel silicate ores |
| 11/27/1980 | WO1980002568A1 Improved method for producing cobalt metal powder |
| 11/27/1980 | WO1980002567A1 Method for producing cobaltic hexammine compounds and cobalt metal powder |
| 11/25/1980 | CA1090145A1 Extraction recovery of certain metal values |
| 11/18/1980 | US4234546 Dioxime complexing agent |
| 11/18/1980 | CA1089902A1 Matte smelting |
| 11/18/1980 | CA1089654A1 Production of ultrafine cobalt powder from dilute solution |
| 11/18/1980 | CA1089653A1 Selective recovery of nickel and cobalt or copper and zinc from solution |
| 11/18/1980 | CA1089649A1 Reduction of metal oxides to sponge metal |
| 11/04/1980 | CA1088757A1 Process for extracting nickel, nickel-copper, nickel- cobalt and nickel-copper-cobalt from concentrates or slags bearing the same |
| 10/21/1980 | US4229270 Process for the recovery of metal values from anode slimes |
| 10/21/1980 | US4229213 Hydrometallurgical recovery of nickel values |
| 10/15/1980 | EP0017285A1 Process for the recovery of metals from catalysts used in the hydrodesulfurization of hydrocarbons |
| 10/14/1980 | CA1087397A1 Scrubbing of ammonia from liquid ion exchange reagents |
| 10/07/1980 | CA1086956A1 Method and apparatus for gaseous reduction of metal ores |
| 10/01/1980 | EP0016595A1 A method of recovering non-ferrous metals from their sulphide ores |
| 09/30/1980 | US4225563 Process and apparatus for continuous leaching of ores |
| 09/09/1980 | US4221765 Purification of nickel chloride solutions |
| 09/02/1980 | US4220627 Process for the treatment of raw materials containing arsenic and metal |
| 09/02/1980 | CA1084719A1 Process for treating lead-copper-sulphur charges |
| 08/26/1980 | US4219354 Hydrometallurgical process for the treatment of oxides and ferrites which contain iron and other metals |
| 08/26/1980 | CA1084276A1 Decomposition leach of sulfide ores with chlorine and oxygen |
| 08/19/1980 | US4218240 Method for producing cobaltic hexammine compounds and cobalt metal powder |
| 08/05/1980 | US4216118 Process for recovering vanadium accumulated on spent catalyst |
| 07/29/1980 | US4214901 Hydrometallurgical refining of nickeliferous sulfides |