| Patents for C22B 3 - Extraction of metal compounds from ores or concentrates by wet processes (16,429) |
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| 07/04/1984 | EP0112764A1 Process for removing iron from leaching solutions |
| 07/04/1984 | EP0112617A1 Process for the extraction of metal values and novel metal extractants |
| 07/03/1984 | US4457495 Apparatus for the automatic recovery of silver from argentiferous wash waters |
| 07/03/1984 | CA1170211A1 Method of producing zinc from chloride solutions which contain chiefly iron copper and zinc |
| 06/21/1984 | WO1984002355A1 Bacterial beneficiation of minerals |
| 06/19/1984 | US4455245 Orange peel, corn husk extracts |
| 06/19/1984 | US4455234 Continuous process, circulation |
| 06/13/1984 | EP0110789A1 Process for recovering actinides and/or lanthanides present in their trivalent state in an aqueous acidic solution |
| 06/12/1984 | US4454077 Process and apparatus for mixing a gas and a liquid |
| 06/07/1984 | WO1984002148A1 Precious metal recovery |
| 06/05/1984 | US4452706 Metals recovery |
| 06/05/1984 | US4452633 Method for producing cobalt metal powder |
| 05/29/1984 | US4451438 Process for recovering niobium and/or tantalum metal compounds from such ores further containing complexes of uranium, thorium, titanium and/or rare earth metals |
| 05/24/1984 | WO1984001947A1 New chelate forming quinoline compounds and processes for recovering metals |
| 05/24/1984 | WO1984001946A1 New chelate forming bisquinoline compounds and processes for recovering metals |
| 05/22/1984 | US4450144 Mixing and shearing with aqueous ammonium hydroxide with a maximum ph gradient |
| 05/22/1984 | US4450143 Process for reducing the organic solvent losses in the treatment of a suspension resulting from the acid attack on an ore |
| 05/15/1984 | US4448886 Biodispersions |
| 05/09/1984 | EP0108015A2 Process for recuperating heavy metals from acid solutions |
| 05/01/1984 | US4446116 Process for recovering niobium and/or tantalum compounds from such ores further containing complexes of uranium, thorium, titanium and/or rare earth metals |
| 05/01/1984 | US4446026 Process and solvent for extraction of the chromates present in an aqueous solution |
| 04/25/1984 | EP0106118A1 Process for removing arsenic from a copper-bearing electrolyte |
| 04/25/1984 | EP0106117A1 Process for the separation of gallium and indium from aqueous solutions |
| 04/24/1984 | US4444733 Hydrometallurgy, pollution control |
| 04/24/1984 | CA1166020A1 Method of disposing of spent organic complexing solutions containing cuprous halides |
| 04/17/1984 | US4443414 Process for separation of molybdenum from tungsten leachates |
| 04/17/1984 | US4443253 Recovery of zinc from zinc containing sulphidic materials |
| 04/17/1984 | CA1165907A1 Method of purifying waste aqueous solutions from heavy metals |
| 04/17/1984 | CA1165534A1 Process for purifying a gallium solution by liquid/ liquid extraction using quaternary ammonium salts |
| 04/10/1984 | US4442074 Recovery of cobalt, molybdenum, nickel and vanadium from an aqueous ammonia and ammonium salt solution by serial extraction of nickel and cobalt and coextracting molybdenum and vanadium |
| 04/10/1984 | US4442073 Oxidation, solvent extraction, precipitation |
| 04/10/1984 | US4442072 Selective recovery of base metals and precious metals from ores |
| 04/10/1984 | US4442071 Extraction of plutonium ions from aqueous sulfuric acid solutions with D2 EHPA or D2 EHPA/TOPO |
| 04/10/1984 | US4441697 Silver recovery unit |
| 04/04/1984 | EP0104346A2 Insoluble chelating compositions |
| 04/03/1984 | US4440734 Process for the recovery of sulfuric acid |
| 04/03/1984 | US4440569 Recovery of zinc from zinc-containing sulphidic material |
| 03/27/1984 | US4439235 Chlorination process for removing precious metals from ore |
| 03/27/1984 | CA1164218A1 Solvent extraction of platinum group metals |
| 03/21/1984 | EP0103383A1 Process for selenium purification |
| 03/20/1984 | US4438077 Two stage selective oxidative leach method to separately recover uranium and refractory uranium-mineral complexes |
| 03/14/1984 | EP0102882A1 Process for extracting gallium using substituted hydroxyquinoleins and organophosphorous compounds |
| 03/14/1984 | EP0102754A1 Process for reclamation of high purity selenium, tellurium, and arsenic from scrap alloys |
| 03/14/1984 | EP0102725A2 Recovery of metal value from sulphide materials |
| 03/13/1984 | US4436705 Extracting chromium (III) from aqueous solutions with 2-ethylhexyl acid phosphate |
| 03/07/1984 | EP0102299A1 Process for the selective dissolution of lead |
| 03/07/1984 | EP0102280A1 Process for extracting gallium using substituted hydroxyquinolines, and organic compounds having a sulfate or sulfonate group |
| 03/07/1984 | EP0102044A2 Agent containing thiolate and process for removing heavy metal ions from diluted aqueous solutions |
| 03/07/1984 | EP0101721A1 Stimulation of bacterial growth by inorganic pyrophosphate |
| 03/06/1984 | US4435368 Hydrometallurgical process for selective dissolution of mixtures of oxy compounds |
| 02/28/1984 | US4434241 Rhodium, lithium, idoine values |
| 02/28/1984 | US4434141 Leaching spent hydroprocessing catalysts |
| 02/28/1984 | US4434140 Stripping a solution containing molybdenum and vanadium values |
| 02/28/1984 | CA1162720A1 Process for purifying solutions containing alkali carbonate and sulfate, eventually alkali hydroxide and at least one of vanadium, uranium or molybdenum metals |
| 02/22/1984 | EP0100797A1 Method of recovering metals from metal-containing materials |
| 02/21/1984 | US4432953 Leaching cobalt from spent hydroprocessing catalysts with sulfur dioxide |
| 02/21/1984 | US4432952 And a base for solvent extraction |
| 02/21/1984 | US4432951 Solvent extraction with substituted 8-hydroxy-quinoline, then contacting with base |
| 02/21/1984 | US4432949 Precipitating vanadium by cooling, extraction of nickel with hydroxyoxime, cobalt with oximes, dioximes, or diketones, and molybdenum and tungsten with tertiary amine |
| 02/21/1984 | US4432948 Adding hydrogen peroxide, passing through cation exchange column, acid stripping, precipitation with oxalic acid, and firing to give yttrium and europium oxides |
| 02/21/1984 | CA1162662A1 Froth flotation process |
| 02/21/1984 | CA1162381A1 Production of anhydrous aluminum chloride composition |
| 02/16/1984 | WO1984000562A1 Method of recovering metals from metal containing materials |
| 02/14/1984 | US4431615 Process for the recovery of magnesium and/or nickel by liquid-liquid extraction |
| 02/14/1984 | US4431613 Leaching of sulphidic mattes containing non-ferrous metals and iron |
| 02/07/1984 | CA1161630A1 Polyalkylene oxide with hydrotropic agent and amphipathic agent for breaking petroleum emulsion |
| 02/01/1984 | EP0099514A1 Process for removing heavy metal ions and arsenic from wet-process phosphoric acid |
| 01/31/1984 | US4429023 Magnetic recording medium |
| 01/25/1984 | EP0099078A1 Process and apparatus for mixing a gas and a liquid |
| 01/24/1984 | US4427640 Separation of components free of each other |
| 01/24/1984 | US4427571 Composition for stripping gold or silver from particulate materials |
| 01/11/1984 | EP0097842A2 Process for recovering noble metals from solutions |
| 01/10/1984 | US4425236 Polysulfide |
| 01/10/1984 | CA1160055A1 Method for the recovery of valuable metals from finely-divided pyrite |
| 01/10/1984 | CA1160018A1 Recuperation of cyanides from rinsing solutions of cyanidric processes for electrodeposition of metals |
| 01/03/1984 | US4424194 Process for extraction of metals from leachable ores and forming of building materials |
| 01/03/1984 | US4424126 Apparatus for removing heavy metals from aqueous liquids |
| 01/03/1984 | CA1159781A1 Microbiological recovery of metals |
| 12/27/1983 | US4423235 Extraction agents for hydrometallurgy |
| 12/27/1983 | US4423014 Solvent extraction |
| 12/27/1983 | US4423012 Manganese and zinc solvent extraction process |
| 12/27/1983 | US4423011 Selective recovery of base metals and precious metals from ores |
| 12/27/1983 | US4423009 Carbonate, sulphate and hydroxide or hydrogen carbonate |
| 12/27/1983 | US4422943 Method for precipitation of heavy metal sulfides |
| 12/21/1983 | EP0096499A1 Recovery of zinc from zinc-containing sulphidic material |
| 12/20/1983 | US4421923 Reaction of a bisphenol ether with epichlorohydrin |
| 12/20/1983 | US4421616 Extraction of zinc chloride with tributyl phosphate, electrodeposition |
| 12/13/1983 | CA1158444A1 Metal recovery process |
| 12/06/1983 | CA1158051A1 Purifying copper salts |
| 11/30/1983 | EP0095358A1 Method of recovering metal values from superalloy scrap |
| 11/29/1983 | US4417965 Method of treating a rare-earth mineral |
| 11/29/1983 | CA1157666A1 Leaching process for metal ores |
| 11/23/1983 | EP0094630A1 Process for the removal of cadmium from crude phosphoric acid obtained by decomposition of phosphatic ores by means of sulfuric acid |
| 11/22/1983 | US4416774 Particle separating screen unit for agitation tank |
| 11/15/1983 | US4415540 Roasting; leaching with sulfuric acid; separation; circulation; simplification |
| 11/15/1983 | US4415458 Flocculating reagents |
| 11/15/1983 | US4415412 Dehydration of an aluminum compound using an acidic extractant; heating with alkali metal chlorides |
| 11/08/1983 | US4414183 Phenolic chelate resin, process for producing the same, and method of recovering heavy metal ions with the same |
| 11/08/1983 | US4414117 Decarbonation of tailings sludge to improve settling |
| 11/08/1983 | CA1156473A1 Method for leaching metal bearing ores |