| Patents for C22B 34 - Obtaining refractory metals (6,435) |
|---|
| 02/05/1985 | CA1181951A1 Recovery of molybdenum from spent catalyst solutions from hydroperoxide epoxidations |
| 01/29/1985 | US4496445 Separation of isotopes of zirconium |
| 01/29/1985 | CA1181595A1 Entrained-flow chlorination of fine titaniferous materials |
| 01/23/1985 | EP0132073A2 Process for producing metallic niobium or metallic tantalum |
| 01/22/1985 | US4495158 Process for the recovery of tantalum values |
| 01/22/1985 | US4495157 Recovery of metal values from spent hydrodesulfurization catalysts |
| 01/17/1985 | WO1985000160A1 Process for making titanium metal from titanium ore |
| 01/15/1985 | CA1180904A1 Process for the exploitation of low-grade oxidic and iron-bearing complex ores or concentrates |
| 01/02/1985 | EP0129555A1 Process and apparatus for obtaining silicon. |
| 01/02/1985 | CA1180192A Autoclave soda digestion of refractory scheelite concentrates |
| 01/02/1985 | CA1180191A Recovery of molybdenum as an aqueous solution |
| 01/02/1985 | CA1180190A Process for the removal of arsenic compounds from tungsten or molybdenum concentrates |
| 12/27/1984 | CA1179827A Chlorinator furnace and method for producing tetrachloride of such metals as titanium and zirconium |
| 12/25/1984 | US4490339 Process for recovering tungsten from MoS3 /WS3 precipitates |
| 12/25/1984 | US4490225 Separation of isotopes of zirconium |
| 12/19/1984 | EP0128440A2 Process for the preparation of titanium dioxide concentrates |
| 12/18/1984 | US4489045 Recovery of by-product calcium chloride from chlorination of titaniferous ores |
| 12/11/1984 | US4487747 Production of metal chlorides |
| 12/11/1984 | US4487677 Electrolytic recovery system for obtaining titanium metal from its ore |
| 12/11/1984 | US4487637 Purification of niobium |
| 12/11/1984 | CA1179147A1 Process for the extraction of arsenic from solutions containing carbonates, sulfates, possibly an alcaline hydroxide and at least one of the metals vanadium, uranium and molybdenum |
| 12/11/1984 | CA1179144A1 Method and an apparatus for producing titanium metal from titanium tetrachloride |
| 12/11/1984 | CA1179143A1 Process for the exploitation of oxidic, vanadium- bearing titanium ores |
| 11/27/1984 | US4485075 Addition of lime |
| 11/20/1984 | CA1178062A1 Recovery of vanadium |
| 11/14/1984 | EP0124578A1 Chlorination of titanium ores using lignitic reactive carbons. |
| 11/13/1984 | US4482526 Recovery of tungsten and molybdenum from sulfur-bearing material |
| 11/08/1984 | WO1984004333A1 High temperature pre-treatment by means of an aqueous alcolyne solution of clayish gangue ore containing at least one valuable element |
| 10/31/1984 | EP0123634A1 Process for separating zirconium tetrachloride from hafnium tetrachloride by extractive distillation for the removal of the aluminium introduced by the solvent |
| 10/30/1984 | CA1176852A1 Autoclave soda digestion of scheelite concentrates with feedback control |
| 10/23/1984 | US4478698 Roasting; solvent extraction; precipitation |
| 10/16/1984 | US4477416 Salt roasting of vanadium ore in the presence of carbon |
| 10/16/1984 | US4477277 Process for producing high-purity metals |
| 10/09/1984 | US4475993 Extraction of trace metals from fly ash |
| 10/09/1984 | CA1175663A1 Combined autoclave-soda digestion of wolframite and scheelite |
| 10/09/1984 | CA1175662A1 Chemical treatment of low-grade wolframite concentrate having high mo/wo.sub.3 ratio |
| 10/09/1984 | CA1175661A1 Process for aluminothermic production of chromium and chromium alloys low in nitrogen |
| 10/02/1984 | US4474735 Process for the recovery of valuable metals from spent crude-oil sulfur-extraction catalysts |
| 10/02/1984 | CA1175240A1 Process for the recovery of metals from their ores |
| 10/02/1984 | CA1175239A1 Wet oxidation of organic matter |
| 10/02/1984 | CA1175238A1 Method and apparatus for the thermal production of metal carbides and metals |
| 09/18/1984 | US4472360 Heating; leaching residue |
| 09/12/1984 | EP0118380A2 Microstructural refinement of cast metal |
| 09/11/1984 | US4471004 Method of forming refractory metal conductors of low resistivity |
| 09/11/1984 | CA1174083A1 Process for the preparation of alloy powders which can be sintered and which are based on titanium |
| 09/04/1984 | CA1173784A1 Transferred-arc plasma reactor for chemical and metallurgical applications |
| 09/04/1984 | CA1173654A1 Reduction of ferrotitaniferous materials |
| 08/28/1984 | US4468248 Zinc-aluminum alloy at elevated pressure |
| 08/21/1984 | US4466824 Transferred-arc plasma reactor for chemical and metallurgical applications |
| 08/07/1984 | CA1172205A1 Process and apparatus for treating titanium machining scrap |
| 07/31/1984 | US4462912 Process for removing molybdenum from aqueous manganese salt solutions |
| 07/31/1984 | US4462822 Molybdenum dioxide-molybdenite roasting |
| 07/24/1984 | CA1171239A1 Method for purifying titanyl hydrate |
| 07/18/1984 | EP0113649A1 A method for working-up complex sulphidic ore concentrates |
| 07/17/1984 | US4460550 Suspension in molten salt |
| 07/05/1984 | WO1984002515A1 Process and apparatus for obtaining silicon from fluosilicic acid |
| 07/03/1984 | US4457776 Process for the removal of arsenic compounds from tungsten or molybdenum concentrates |
| 07/03/1984 | CA1170060A1 Chromium recovery from superalloy scrap by selective chlorine leaching |
| 06/26/1984 | CA1169661A1 Process using carbonate reagent for recovering vanadium from cokes derived from heavy oils |
| 06/19/1984 | US4455283 Molybdenum epoxidation catalyst recovery |
| 06/19/1984 | CA1169232A1 Retort pipe seal |
| 06/12/1984 | US4454098 Also containing arsenic; digestion with alkali metal hydroxide, slurrying with water, adding ferric salt |
| 05/29/1984 | US4451439 Oxidant and catalyst |
| 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 | WO1984001940A1 Chlorination of titanium ores using lignitic reactive carbons |
| 05/24/1984 | WO1984001939A1 Improvement in entrained downflow chlorination of fine titaniferous material |
| 05/08/1984 | US4447403 Method for autoclave oxidation of ion species aqueous solutions |
| 05/08/1984 | US4447045 Apparatus for preparing high-melting-point high-toughness metals |
| 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 | US4446115 Hydrofluoric acid, ion exchange resin |
| 05/01/1984 | US4445931 Reacting metal halide vapor with molten sodium spray |
| 04/25/1984 | EP0106456A1 Tungsten recovery |
| 04/24/1984 | US4444733 Hydrometallurgy, pollution control |
| 04/18/1984 | EP0105638A1 Method of producing parts of a nuclear reactor |
| 04/18/1984 | EP0105637A1 Method of separating isotopes of zirconium |
| 04/18/1984 | EP0105542A1 Process for producing metallic chlorides |
| 04/17/1984 | US4443415 Recovery of V2 O5 and nickel values from petroleum coke |
| 04/11/1984 | EP0105164A1 Process for the chlorination of oxidic materials |
| 04/10/1984 | US4442082 High purity; reaction of silicon tetrafluoride with sodium |
| 04/10/1984 | US4442076 Separation and recycling of ore and reductant |
| 04/10/1984 | US4442075 Titanium ore chlorination process using a molten salt |
| 04/10/1984 | US4442073 Oxidation, solvent extraction, precipitation |
| 04/10/1984 | US4441925 Method and an apparatus for producing titanium metal from titanium tetrachloride |
| 04/10/1984 | US4441920 Method for the thermal production of metals |
| 04/10/1984 | CA1165126A1 Refractory metal recovery process |
| 04/10/1984 | CA1165111A1 Vacuum separator |
| 04/03/1984 | US4440730 Fluidized bed with high surface area, microporous reductant; easily removable vanadium values |
| 04/03/1984 | US4440384 Retort pipe seal |
| 04/03/1984 | CA1164629A1 Method of recovering molybdenum oxide |
| 03/21/1984 | EP0103312A2 Process for producing high-purity metals |
| 03/20/1984 | US4438077 Two stage selective oxidative leach method to separately recover uranium and refractory uranium-mineral complexes |
| 03/20/1984 | US4437888 Preparation of titanium/aluminum alloys |
| 03/20/1984 | US4437885 Method for the physical separation of a metallic phase and scoriae in an induction furnace |
| 03/20/1984 | CA1163800A1 Metal distillation apparatus |
| 03/14/1984 | EP0102892A1 Process for manufacturing high purity metals and alloys |
| 03/13/1984 | CA1163468A1 Manufacture of titanium and aluminium alloys |
| 03/06/1984 | US4435365 Leaching iron-titanium ore with hydrochloric acid |
| 02/28/1984 | US4434141 Leaching spent hydroprocessing catalysts |
| 02/28/1984 | US4434140 Stripping a solution containing molybdenum and vanadium values |
| 02/28/1984 | CA1162745A1 Low-temperature fluid-bed chlorination of titaniferous ore |