| Patents for C22B 11 - Obtaining noble metals (5,080) |
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| 12/19/1984 | EP0128887A1 A method for processing copper smelting materials and the like containing high percentages of arsenic and/or antimony |
| 12/19/1984 | EP0128439A2 Process for the recovery of noble metals of group VIII of the periodic table of the elements from a contaminated solution resulting from the carbonylation of methyl acetate and/or dimethyl ether |
| 12/11/1984 | CA1179146A1 Method for the recovery of salt of group viii noble metals from solutions |
| 12/05/1984 | EP0127357A2 Oxidation process |
| 11/23/1984 | EP0115500A4 Recovery of silver and gold from ores and concentrates. |
| 11/20/1984 | CA1178063A1 Process for the extraction of precious metals for concentrates thereof |
| 11/08/1984 | WO1984004259A1 Recovery of metal values from mineral ores by incorporation in coal-oil agglomerates |
| 11/07/1984 | EP0124213A1 Extraction process |
| 11/06/1984 | CA1177254A1 Process for the extraction of precious metals for concentrates thereof |
| 10/16/1984 | CA1176061A1 Process for separating metals from aqueous solutions |
| 10/09/1984 | US4475993 Extraction of trace metals from fly ash |
| 09/26/1984 | EP0119685A1 Hydrometallurgical arsenopyrite process |
| 09/25/1984 | CA1174861A1 Selective extraction of gold |
| 09/25/1984 | CA1174860A1 Method of recovering gold from anode slimes |
| 09/25/1984 | CA1174858A1 Recovery of precious metals from spent alumina- containing catalysts |
| 09/18/1984 | CA1174474A1 Process for separating metals from aqueous solutions |
| 09/11/1984 | CA1174055A1 Cyanidation of gold ores |
| 09/04/1984 | CA1173980A1 Dore slag treatment |
| 08/21/1984 | CA1172856A1 Process for the separation of gold and silver from complex sulfide ores and concentrates |
| 08/15/1984 | EP0115500A1 Recovery of silver and gold from ores and concentrates |
| 07/24/1984 | CA1171286A1 Recovery of silver and gold from ores and concentrates |
| 07/18/1984 | EP0113649A1 A method for working-up complex sulphidic ore concentrates |
| 07/03/1984 | US4457495 Apparatus for the automatic recovery of silver from argentiferous wash waters |
| 06/07/1984 | WO1984002148A1 Precious metal recovery |
| 05/29/1984 | US4451429 Pulverizing sputtered deposits to make powdered metal |
| 05/29/1984 | US4451290 Recovery of platinum group metals from scrap and residues |
| 05/15/1984 | US4448604 Smelting with flux to produce slag and copper matte; oxidation; treatment with copper, nickel, or iron |
| 05/01/1984 | US4445935 Method for the recovery of silver from waste photographic fixer solutions |
| 04/25/1984 | EP0106327A2 Selective separation of noble metals |
| 04/24/1984 | CA1166022A1 Recovery of zinc from zinc containing sulphidic material |
| 04/10/1984 | US4441697 Silver recovery unit |
| 04/03/1984 | US4440569 Recovery of zinc from zinc-containing sulphidic material |
| 03/20/1984 | US4438076 Leaching with sodium cyanide and oxygen under pressure |
| 03/20/1984 | US4437889 Nitric acid |
| 02/28/1984 | US4434240 Recovery of noble metal values from carbonylation residues |
| 02/16/1984 | WO1984000563A1 Recovery of silver and gold from ores and concentrates |
| 02/14/1984 | US4431614 Process for the separation of gold and silver from complex sulfide ores and concentrates |
| 02/14/1984 | US4431613 Leaching of sulphidic mattes containing non-ferrous metals and iron |
| 02/14/1984 | CA1162054A1 Process for the recovery of platinum group metals from refractory ceramic substrates |
| 02/08/1984 | EP0100237A2 Recovery of zinc from zinc-containing sulphidic material |
| 01/31/1984 | US4428768 Process for the recovery of platinum group metals from refractory ceramic substrates |
| 01/24/1984 | US4427571 Composition for stripping gold or silver from particulate materials |
| 01/24/1984 | US4427442 Separating a molten ceramic phase from a slag phase containing ceramic residues |
| 01/17/1984 | US4426225 From scrap printed circuit boards, etching |
| 01/11/1984 | EP0097842A2 Process for recovering noble metals from solutions |
| 01/10/1984 | US4425261 Liquid suspension of particles of a metal belonging to the platinum group and a method for the manufacture of such a suspension |
| 01/03/1984 | US4424194 Process for extraction of metals from leachable ores and forming of building materials |
| 12/27/1983 | US4423011 Selective recovery of base metals and precious metals from ores |
| 12/21/1983 | EP0096493A2 Plasma arc furnace |
| 12/20/1983 | US4421724 Cyanidation in aerated alkaline solution |
| 12/13/1983 | CA1158444A1 Metal recovery process |
| 11/29/1983 | US4418043 Process for separating metals from aqueous solutions |
| 11/22/1983 | US4416692 Lead as extractant |
| 11/09/1983 | EP0055257B1 A liquid suspension of particles of a metal belonging to the platinum group, and a method for the manufacture of such a suspension |
| 11/01/1983 | US4412859 Method for recovering platinum in a nitric acid plant |
| 11/01/1983 | CA1156048A1 Process for the recovery of lead and silver from minerals and process residues |
| 10/25/1983 | US4411612 Apparatus for recovering precious metals from their ores |
| 10/11/1983 | CA1155084A1 Process for the recovery of metal values from anode slimes |
| 10/04/1983 | CA1154599A1 Hydrometallurgical processing of precious metal-containing materials |
| 09/27/1983 | US4406693 Alloying with magnesium, then dissolving alloying agent |
| 09/27/1983 | CA1154265A1 Precious metals recovery process |
| 09/21/1983 | EP0089184A1 Process for the recovery of silver from metallurgical intermediates |
| 09/20/1983 | US4405569 Hydrometallurgical process for extracting metal values from complex ores containing arsenic and sulfur |
| 09/13/1983 | US4404022 For froth flotation of precious metals |
| 08/31/1983 | EP0086841A1 Process for recovering silver and photosensitive material base from photosensitive material by utilizing microorganism |
| 08/30/1983 | US4401468 Process for removing precious metals from ore |
| 08/30/1983 | CA1152756A1 Process and apparatus for recovering precious metals from bimetallic materials |
| 08/30/1983 | CA1152754A1 Process for the recovery of gold from carbonaceous ores |
| 08/23/1983 | CA1152337A1 Leaching of sulphidic mattes containing non-ferrous metals and iron |
| 08/09/1983 | US4397690 Process for recovering gold |
| 08/09/1983 | US4397689 Process for the extraction of precious metals from concentrates thereof |
| 08/09/1983 | US4397686 Oxidation of impurities |
| 08/02/1983 | US4396585 Silver removal with halogen impregnated non-carbon adsorbents |
| 08/02/1983 | CA1150931A1 Process for the recovery of silver values from silver-containing material which also contains iron and arsenic |
| 07/19/1983 | US4394354 Silver removal with halogen impregnated activated carbon |
| 07/19/1983 | CA1150064A1 Process and apparatus for recovery of hydrogen-reduced metals, ions and the like at porous hydrophobic catalytic barriers |
| 07/19/1983 | CA1150061A1 Process for the production of elemental silver from silver chloride or silver sulphate |
| 07/12/1983 | US4392962 Process for separating metals from aqueous solutions |
| 07/12/1983 | US4392889 Hot caustic bath |
| 06/28/1983 | US4390366 Process for the extraction of precious metals from solutions thereof |
| 06/28/1983 | CA1148749A1 Process for treating liquid container au-cn compound |
| 06/28/1983 | CA1148748A1 Recovery of precious metals from difficult ores |
| 06/21/1983 | US4389248 Method of recovering gold from anode slimes |
| 06/14/1983 | US4388109 Mixing and heating with sodium carbonate |
| 05/31/1983 | CA1147482A1 Process for recovering precious metals |
| 05/24/1983 | US4384889 Simultaneous leaching and cementation of precious metals |
| 05/18/1983 | EP0079179A1 Dore slag treatment |
| 05/10/1983 | CA1145951A1 Process for beneficiating gold |
| 04/20/1983 | EP0077128A1 Recovery of platinum group metals from scrap and residues |
| 04/20/1983 | EP0077121A2 Method for recovering platinum in a nitric acid plant |
| 04/12/1983 | US4379526 Ore mill and metal separating device |
| 04/06/1983 | EP0076049A1 Recovery of precious metals from leach residues |
| 04/05/1983 | CA1143950A1 Silver recovery method and apparatus |
| 03/08/1983 | US4375984 Recovery of gold from bromide etchants |
| 03/03/1983 | WO1983000630A1 Process for recovering silver and photosensitive material base from photosensitive material by utilizing microorganism |
| 03/02/1983 | EP0073108A1 A process for the recovery of metals |
| 02/16/1983 | EP0061468A4 Recovery of silver from ores and concentrates. |
| 02/15/1983 | US4374098 Method of concentrating silver from anode slime |
| 02/15/1983 | US4374097 Method for recovering precious metals |
| 02/08/1983 | US4372782 Recovery of lead and silver from minerals and process residues |