| Patents for C22B 34 - Obtaining refractory metals (6,435) |
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| 04/01/1986 | CA1202468A1 Process for the production of nearly aluminum chloride-free titanium tetrachloride from titaniferous raw materials containing aluminum compounds |
| 03/25/1986 | US4578165 Process for separation of zirconium from hafnium |
| 03/25/1986 | CA1202183A1 Apparatus and method for producing purified refractory metal from a chloride thereof |
| 03/25/1986 | CA1202182A1 Apparatus and method for production of refractory metal from a chloride thereof |
| 03/18/1986 | US4576636 Process for beneficiating oxidic ores |
| 03/11/1986 | CA1201593A1 Selective removal of arsenical materials in the alkaline treatment of uranium and/or molybdenum containing ores, with a magnesium compound |
| 03/05/1986 | EP0173133A2 Process for partial oxidation of FeCl2 to FeCl3 |
| 03/05/1986 | EP0173132A2 Two stage chlorination of titaniferous ore with FeCl3 reclamation |
| 02/25/1986 | US4572824 Process for recovery of zirconium and acid from spent etching solutions |
| 02/25/1986 | CA1200981A1 Recovery of vanadium from carbonaceous materials |
| 02/11/1986 | CA1200397A1 Recovery of non-radioactive transition metal compounds from an ore which contains radioactive elements |
| 01/28/1986 | US4567026 Method for extraction of iron aluminum and titanium from coal ash |
| 01/21/1986 | US4565354 Apparatus for producing purified refractory metal from a chloride thereof |
| 01/08/1986 | EP0167394A2 Process for removing metals from aluminosilicate materials |
| 01/02/1986 | EP0166482A2 Improved process for recovering metals from the corresponding metal halides |
| 01/02/1986 | EP0166481A2 Process for obtaining silicon or transition metals from their halides |
| 12/31/1985 | US4562049 Recovery of titanium from perovskite by acid sulfation |
| 12/31/1985 | US4562048 Process for the treatment of metal-bearing ores |
| 12/31/1985 | US4561883 Method of producing metals or metal alloys and an arrangement therefor |
| 12/31/1985 | CA1198594A1 Process for the enrichment of anhydrous moo.sub.3 derived from molybdenum through alkaline solubilisation of molybdeneferous materials |
| 12/31/1985 | CA1198580A1 Process for making a titanium dioxide concentrate |
| 12/31/1985 | CA1198578A1 Chlorination of titanium ores using lignitic reactive carbons |
| 12/24/1985 | US4560546 Chromium hydroxide precipitate obtained by a continuous process for the removal of chromium from waste waters |
| 12/18/1985 | EP0164777A2 Process for the preparation of a concentrate of titanium dioxide from titanium dioxide containing raw materials |
| 12/12/1985 | EP0151111A4 Process for making titanium metal from titanium ore. |
| 12/10/1985 | US4557906 Recovery of rhenium |
| 12/10/1985 | CA1197690A1 Process for removing molybdenum from aqueous manganese salt solutions |
| 12/03/1985 | US4556420 Process for combination metal reduction and distillation |
| 12/03/1985 | CA1197383A1 Process for the recovery of valuable metals from spent crude-oil sulfur-extraction catalysts |
| 11/27/1985 | EP0162155A1 Production of titanium metal sponge and apparatus therefor |
| 11/26/1985 | US4555387 Flash roasting of molybdenum sulfide concentrates in a slagging reactor |
| 11/19/1985 | US4554138 Leaching metals from spent hydroprocessing catalysts with ammonium sulfate |
| 11/13/1985 | EP0160779A1 Improvements in a method and an apparatus for producing titanium metal from titanium tetrachloride |
| 11/12/1985 | US4552730 Recovery of titanium from perovskite using sulfuric acid leaching |
| 11/05/1985 | US4551315 With sulfuric acid |
| 11/05/1985 | US4551313 Flash sublimation and purification of molybdenum oxide |
| 11/05/1985 | US4551312 Process for converting molybdenite to molybdenum oxide |
| 10/22/1985 | US4548792 Method for precipitating vanadium from vanadium bearing liquors and recovering vanadium pentoxide |
| 10/15/1985 | US4547345 Recovery of molybdenum from spent catalyst solutions obtained from hydroperoxide epoxidations |
| 10/15/1985 | US4547220 Reduction of MoO3 and ammonium molybdates by ammonia in a rotary furnace |
| 10/01/1985 | US4544533 Recovering vanadium values from ammonium bicarbonate solution using heat, sulfuric acid, and ammonium sulfate |
| 09/11/1985 | EP0154448A2 Process for recovery of zirconium by solvent extraction |
| 09/10/1985 | US4540551 Two stage chlorination of titaniferous ore with FeCl3 reclamation |
| 09/10/1985 | CA1193105A1 Tungsten recovery from tungsten ore concentrates by caustic digestion |
| 09/03/1985 | US4539186 Method for leaching and recovering vanadium from vanadium bearing by-product materials |
| 08/28/1985 | EP0153296A2 Process and apparatus for treating scrap from the working of titanium parts |
| 08/20/1985 | US4536374 Process using carbonate reagent for recovering vanadium from cokes and ashes derived from heavy oils |
| 08/14/1985 | EP0151111A1 Process for making titanium metal from titanium ore |
| 08/07/1985 | EP0150438A2 Method of recovering valuable metals from waste materials, particularly from spent petroleum cracking catalysts |
| 08/06/1985 | US4533527 Extracting from tungsten carbide with hydrogen peroxide |
| 07/23/1985 | CA1190748A1 Process for purifying molybdenite concentrates |
| 07/17/1985 | EP0148194A1 High temperature pre-treatment by means of an aqueous alcolyne solution of clayish gangue ore containing at least one valuable element. |
| 07/10/1985 | EP0147608A1 Process for the preparation of titanium dioxide |
| 07/09/1985 | US4527778 Apparatus for production of refractory metal from a chloride thereof |
| 07/02/1985 | US4526762 Recovery of vanadium from acidic solutions thereof |
| 06/26/1985 | EP0146314A2 Method of producing a high-purity metal member |
| 06/26/1985 | EP0145984A1 Process for the preparation of titanium dioxide |
| 06/19/1985 | EP0144868A2 Process for manufacturing fine metallic chromium powder with a low oxygen content |
| 06/18/1985 | US4524049 Vanadium and nickel |
| 06/18/1985 | US4524001 Method of purifying uraniferous aqueous solutions |
| 06/04/1985 | US4521385 From ores by reduction and carburization, magnetic separation of carburized iron, chlorination of titanium carbide |
| 06/04/1985 | US4521384 Process for the production of nearly aluminium chloride-free titanium tetrachloride from titaniferous raw materials containing aluminum compounds |
| 06/04/1985 | US4521383 Lime addition to heavy crude oils prior to coking |
| 06/04/1985 | US4521382 Pollution control |
| 05/28/1985 | US4519988 Two stage chlorination of titaniferous ore |
| 05/28/1985 | US4519837 Low temperature liquid metal reduction |
| 05/28/1985 | US4519835 Transferred-arc plasma reactor for chemical and metallurgical applications |
| 05/22/1985 | EP0142291A1 Process for separation of zirconium from hafnium |
| 05/21/1985 | US4518426 Magnesium chloride decomposition, titanium tetrachloride-magnesiumreaction |
| 05/14/1985 | US4517163 Process for making titanium dioxide concentrates |
| 05/14/1985 | CA1186901A2 Method for producing titanium metal from titanium tetrachloride |
| 05/08/1985 | EP0140088A2 Process for recovering vanadium from waste water |
| 05/07/1985 | US4515757 Stripping a solution containing molybdenum, tungsten and/or vanadium values |
| 04/30/1985 | US4514369 Recovery of cobalt, molybdenum, nickel, tungsten and vanadium from an aqueous ammonia and ammonium salt solution by coextracting molybdenum, tungsten and vanadium and sequential extraction of nickel and cobalt |
| 04/30/1985 | US4514368 Leaching nickel, cobalt, molybdenum, tungsten, and vanadium from spent hydroprocessing catalysts |
| 04/30/1985 | CA1186154A1 Process for removing molybdenum from aqueous salt solutions |
| 04/23/1985 | US4512557 Apparatus for preparing high-melting-point high-toughness metals |
| 04/17/1985 | EP0137166A2 High-purity molybdenum target and high-purity molybdenum silicide target for LSI electrodes and process for producing the same |
| 04/16/1985 | US4511399 Control method for large scale batch reduction of zirconium tetrachloride |
| 04/09/1985 | CA1185097A1 Process for preparing metals from their fluorine- containing compounds |
| 04/02/1985 | US4508701 Extraction of tungsten from spent or scrap catalyst materials |
| 04/02/1985 | US4508563 Reducing the oxygen content of tantalum |
| 04/02/1985 | US4508322 Apparatus for preparing high melting point high toughness metals |
| 03/27/1985 | EP0135457A1 Pretreatment of ores having an argillaceous gangue by alkali humidifying and thermal treatment |
| 03/26/1985 | CA1184387A1 Process for recovering rare metals from the combustion residue of coal by digestion |
| 03/26/1985 | CA1184386A1 Process for the separate recovery of molybdenum and vanadium |
| 03/20/1985 | EP0134780A2 Process for preparing metals or alloys and apparatus therefor |
| 03/20/1985 | EP0134643A2 Preparing metallic zirconium, hafnium or titanium |
| 03/20/1985 | EP0134351A1 Recovery of vanadium oxide |
| 03/19/1985 | US4505764 Temporary alloying with hydrogen |
| 03/12/1985 | US4504448 Activated carbon adsorption of flotation reagents from tungsten solutions |
| 03/12/1985 | US4504310 Process for the production of high purity metals or alloys |
| 02/26/1985 | CA1183005A1 Ammonium hydroxide stripping of tungsten from organic solvents |
| 02/26/1985 | CA1183003A1 Autoclave tungstate upgrading of scheelite concentrates |
| 02/26/1985 | CA1183002A1 Separation of trace molybdenum from tungstate solutions |
| 02/19/1985 | US4500496 Adding ferrous chloride and chlorinating |
| 02/19/1985 | US4500495 Roasting, contacting with aqueous ammonia and sulfur dioxide, precipitation with hydrogen sulfide |
| 02/19/1985 | US4500350 Disintegration of chromites |
| 02/12/1985 | CA1182277A1 Purification of ammonium tungstate solutions |
| 02/05/1985 | CA1181952A1 Process for conditioning tungsten concentrates |