| Patents for C22B 3 - Extraction of metal compounds from ores or concentrates by wet processes (16,429) |
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| 07/01/1980 | CA1080481A1 Recovery of precious metals from refractory material |
| 06/24/1980 | US4209419 Certain sulfonamidoquinolines, metal complexes thereof, and solutions containing such sulfonamidoquinolines and metal complexes |
| 06/17/1980 | US4208379 Recovery of metals from Atlantic sea nodules |
| 06/17/1980 | US4208377 Process for recovering actinide values |
| 06/03/1980 | US4205979 Process for beneficiating oxide ores |
| 05/28/1980 | EP0011484A1 Removal of metals from solution |
| 05/27/1980 | US4205048 Liquid-liquid extraction of Cu, Co, Ni from ammoniacal solutions with 7-ethyl-undeca-2,4-dione |
| 05/27/1980 | CA1078191A1 Method of recovery of metal compounds and metals from nitrate solutions |
| 05/20/1980 | US4203964 Sulfurization |
| 05/20/1980 | US4203952 Process for the removal of heavy metals and transition metals other than platinum from solution |
| 05/20/1980 | CA1077725A1 Process for obtaining metal values by leaching raw sea nodules |
| 05/14/1980 | EP0010608A1 Method and apparatus for recovering dissolved, suspended or chemically bonded materials from water |
| 05/13/1980 | US4202862 By controlling temperature and ph |
| 05/13/1980 | CA1077279A1 Catalytic hydrogen reduction of metals from solutions |
| 05/06/1980 | US4201747 Solvent extraction of aqueous solution of rare earth ions and hydroxyethyl ethylenediaminetriacetic acid with tributyl phosphate and organic phosphate |
| 05/06/1980 | US4201638 Triple ions of 1,2- and 1,4-dicarbonyl compounds and analogs thereof containing nitrogen and containing two strategic oxygen or nitrogen groups and process for producing same |
| 05/06/1980 | US4201636 Recovering group 8 metal hydroxides and hydrated oxides from effluents; adjust ph, filtration, heating, and electrolysis |
| 05/06/1980 | US4201573 Using the slag as an agitation medium |
| 05/06/1980 | CA1077176A1 Process for neutralizing waste sulfuric acids |
| 05/06/1980 | CA1076816A1 Liquid-liquid extraction of metal values from aqueous solution |
| 05/06/1980 | CA1076815A1 Method for removing arsenic from copper and/or nickel bearing aqueous acidic solutions by solvent extraction |
| 05/01/1980 | WO1980000796A1 Improvements relating to extractants |
| 04/30/1980 | EP0010367A1 Method of recovering metal values |
| 04/29/1980 | US4200504 Hydrometallurgy |
| 04/29/1980 | CA1076367A1 Process for the treatment of complex lead-zinc concentrates |
| 04/29/1980 | CA1076362A1 Process for the recovery of vanadium and molybdenum |
| 04/16/1980 | EP0010044A1 Process for the separation of americium from curium |
| 04/15/1980 | CA1075636A1 Recovery of zinc from residual solutions of electroplating |
| 04/15/1980 | CA1075474A1 Separation of cobalt and nickel |
| 04/15/1980 | CA1075467A1 Process for extracting metal values from manganese nodules |
| 04/08/1980 | US4197275 Silver recovery |
| 04/08/1980 | US4197076 Forced draft burner |
| 04/08/1980 | CA1075015A1 Process for working up manganese modules and recovery of the contained valuable constituents |
| 04/01/1980 | US4196076 Separation of cobalt and nickel by solvent extraction |
| 04/01/1980 | CA1074695A1 Method and apparatus for recovering metal values from mineral ores by in-situ mining |
| 03/25/1980 | US4194905 Solvent-extraction process for recovery and separation of metal values |
| 03/25/1980 | CA1074127A1 Process for precipitating precious metals from solutions which contain them |
| 03/25/1980 | CA1074126A1 Process for separating and recovering rhodium and iridium from their mixtures with other precious metals |
| 03/19/1980 | EP0008992A1 Process for recovering indium |
| 03/18/1980 | US4193970 Process for the precipitation of iron as jarosite |
| 03/18/1980 | US4193969 Selective nickel and cobalt extraction from aqueous acidic solutions |
| 03/18/1980 | US4193968 Process for recovering gallium |
| 03/11/1980 | US4192852 Process for precipitating iron as jarosite with a low non-ferrous metal content |
| 03/11/1980 | US4192851 Leaching of metal sulphides |
| 03/11/1980 | CA1073434A1 Purification of iron containing acidic solutions |
| 03/11/1980 | CA1073217A1 Recovery of metal values from basic aqueous ammoniacal leach liquor |
| 03/11/1980 | CA1073216A1 Method of separating zinc and copper from aqueous solutions |
| 03/04/1980 | US4191729 Hydrometallurgical process for separating lead and zinc from oxidized ore |
| 03/04/1980 | US4191728 Process for selective extraction of metal ions from aqueous solutions and extracting agents suitable for that purpose |
| 02/26/1980 | US4190509 Electrochemical process for the removal of contaminants from aqueous medium |
| 02/26/1980 | US4190508 Process for removing chalcophile elements from aqueous solutions by electrolysis |
| 02/26/1980 | US4190436 Air mix agitation for the extraction of metals from leachable ores |
| 02/26/1980 | CA1072342A1 Recovery of lead |
| 02/19/1980 | US4189461 Metal leaching from concentrates using nitrogen dioxide in acids |
| 02/19/1980 | CA1071839A1 Process for the treatment of acidic waste liquid containing dissolved ferrous salts |
| 02/12/1980 | US4188362 Process for the treatment of platinum group metals and gold |
| 02/12/1980 | CA1071429A1 Method and apparatus for purification of aqueous zinc sulphate solution used in electrolytical production of zinc |
| 02/12/1980 | CA1071414A1 Method for dissolving plutonium dioxide |
| 02/07/1980 | WO1980000131A1 Magnetic separation process for beneficiating sulfide ores |
| 02/05/1980 | US4187281 Reduction, leaching |
| 02/05/1980 | CA1071236A1 Extraction process |
| 02/05/1980 | CA1071136A1 Method for the electrolytic recovery of sb, as, hg and/or sn |
| 01/29/1980 | US4186175 Crown ether uranyl halide complexes |
| 01/29/1980 | CA1070504A1 Method for removing arsenic from copper electrolytic solutions or the like |
| 01/29/1980 | CA1070503A1 Chromite recovery from chromite-bearing ore |
| 01/22/1980 | US4185078 Molybdenum, quaternary ammonium compound, highly aromatic solvent |
| 01/22/1980 | CA1070289A1 Mixtures of poly-branched monocarboxylic acids and process for preparing same |
| 01/15/1980 | CA1069854A1 Method for purifying actinides which are in low oxidation states |
| 01/15/1980 | CA1069704A1 Extraction and purification of silver |
| 01/08/1980 | CA1069316A1 Treatment of ores or metallurgical by-products containing arsenic and antimony |
| 12/25/1979 | CA1068487A Method of recovering the constituents of catalysts comprising an aluminous carrier, platinum and iridium |
| 12/18/1979 | US4179370 Flocculating agent comprising water-in-oil emulsion of stabilizer plus NH-active polymer carrying formaldehyde and amine radicals |
| 12/18/1979 | CA1068116A1 Process for the treatment of platinum group metals and gold |
| 12/11/1979 | CA1067704A1 Process for liquid-liquid extraction of cobalt |
| 11/27/1979 | US4175789 Solution mining utilizing dissolved oxygen with elimination of entrained gas |
| 11/27/1979 | CA1066875A1 Separation of sulfur from metal values |
| 11/20/1979 | US4175109 Process for extracting tungsten from alkali metal tungstate solutions |
| 11/20/1979 | US4175012 For copper and nickel |
| 11/14/1979 | EP0005415A1 A process of regenerating an ammoniacal etching solution |
| 11/13/1979 | US4174281 Countercurrent decantation |
| 11/13/1979 | CA1066062A1 Recovery of nitric acid soluble transition metals from sulfur and iron containing ores of the same |
| 11/13/1979 | CA1066061A1 Recovery of nitric acid soluble transition metals from sulfur and iron containing ores of the same |
| 11/13/1979 | CA1066026A1 Redox treatment of alunite ore |
| 11/13/1979 | CA1066025A1 Method of treating alunite ore |
| 11/06/1979 | US4173616 Extraction of copper values from aqueous solution |
| 11/06/1979 | US4173520 Chlorination, oxidation, solvent extraction, multistage |
| 11/06/1979 | US4173519 Method, process, system, and apparatus for recovering metal values from ores |
| 10/30/1979 | US4172879 Ferric iron removal from aluminum fluoride solutions |
| 10/30/1979 | US4172775 Photochemical separation of metals in solution by precipitation following reduction or oxidation |
| 10/30/1979 | CA1065143A1 Recovery of copper from chalcopyrite utilizing copper sulfate leach |
| 10/30/1979 | CA1065142A1 Selenium rejection during acid leaching of matte |
| 10/23/1979 | CA1064854A1 Method of extracting constituent metal values from pyrometallic nodules from the sea |
| 10/23/1979 | CA1064816A1 In situ leaching process for recovering uranium values |
| 10/23/1979 | CA1064711A1 Extraction method for non-ferrous metals |
| 10/23/1979 | CA1064708A1 Process for separation and recovery of metal values from sulfide ore concentrates |
| 10/23/1979 | CA1064707A1 Ferric ion as a scavenging agent in a solvent extraction process |
| 10/09/1979 | CA1063967A1 Zinc hydrometallurgical process |
| 10/09/1979 | CA1063809A1 Hydrometallurgical process for metal sulphides |
| 10/09/1979 | CA1063776A1 Method for working-up shale |
| 10/03/1979 | EP0004431A1 Bacterial leaching of minerals |