| Patents for C22B 34 - Obtaining refractory metals (6,435) |
|---|
| 09/19/1978 | CA1038652A1 High surface area valve metal powder |
| 09/19/1978 | CA1038630A1 Ilmenite beneficiation with fec13 |
| 09/19/1978 | CA1038629A1 Alumina removal from chromate leach liquors |
| 09/12/1978 | US4113685 Flocculating agent comprising water-in-oil emulsion of stabilizer plus NH-active polymer carrying formaldehyde and amine radicals |
| 09/12/1978 | US4113479 Vacuum smelting process for producing ferrotungsten |
| 09/05/1978 | US4112046 Disintegration of silica-rich chromite |
| 08/29/1978 | US4110398 Metal separation from dragstream material of refining process |
| 08/15/1978 | US4107445 Titanium and zirconium production by arc heater |
| 08/15/1978 | US4107264 Titanium dioxide, digestion with hydrofluoric acid, precipitation with ammonium hydroxide, calcining |
| 08/15/1978 | CA1036320A1 Process for the joint production of sodium, tripolyphosphate and titanium dioxide |
| 08/08/1978 | US4105743 Selectively extracting copper, zinc, nickel from a mixture of metal hydroxides |
| 08/08/1978 | US4105440 Sodium, potassium, rubidium or cesium |
| 08/08/1978 | US4105192 Process and apparatus for producing zirconium sponge |
| 07/18/1978 | US4101316 Conversion of molybdenite concentrate to ferro-molybdenum and simultaneous removal of impurities by direct reduction with sulfide forming reducing agents |
| 07/18/1978 | US4101309 Method for preparing tungsten materials |
| 07/11/1978 | US4100252 Recovering vanadium |
| 07/11/1978 | US4100251 Method of recovering metals out of soot originating from the combustion of oil |
| 07/11/1978 | US4099958 Method of producing vanadium |
| 06/27/1978 | US4097574 Process for producing a synthetic rutile from ilmentite |
| 06/27/1978 | CA1033537A1 Separation process of zirconium and hafnium tetrachlorides and their mixtures |
| 06/06/1978 | US4093453 Method of making an ordered alloy |
| 05/16/1978 | US4089675 Combination beneficiation ilmenite digestion liquor reduction process |
| 05/02/1978 | US4087510 Process for extracting metals from spent desulphurization catalysts |
| 04/18/1978 | US4085190 Production of rutile from ilmenite |
| 04/18/1978 | US4085189 Continuous, chlorination of iron oxides |
| 04/11/1978 | US4083923 From clays bauxite, and laterite, carbo-chlorination |
| 04/11/1978 | US4083921 Purifying molybdenum flotation concentrates |
| 04/04/1978 | US4082833 Carbo-chlorination to produce aluminum chloride and silicon chloride; sulfur or sulfur compound as promoter |
| 04/04/1978 | US4082832 Treatment of raw materials containing titanium |
| 04/04/1978 | US4082546 Recovery of waste heavy metals from solutions by cementation with aluminum |
| 03/28/1978 | USRE29598 Method for recovering vanadium-values from vanadium-bearing iron ores and iron ore concentrates |
| 03/28/1978 | US4081507 Process for removing chemisorbed and interstitial chlorine and chlorides from a hot titanium dioxide beneficiate-carbon mixture |
| 03/21/1978 | US4080194 Titanium or zirconium reduction process by arc heater |
| 03/07/1978 | US4078039 Recovering titanium |
| 02/21/1978 | US4075277 Process for recovering molybdenum values from spent catalysts |
| 02/07/1978 | US4072510 Production of ferrochrome alloy |
| 02/07/1978 | US4072506 Method of separating hafnium from zirconium |
| 01/31/1978 | US4071229 Vacuum revolving cylindrical furnace |
| 01/10/1978 | US4067953 Process for upgrading ores containing baddeleyite |
| 01/03/1978 | US4066734 Oxidation |
| 01/03/1978 | US4066733 Metal extraction from sea nodules |
| 01/03/1978 | US4066424 Selectively recovering metal chlorides from gaseous effluent |
| 11/22/1977 | US4059442 Method for making a porous tantalum pellet |
| 11/15/1977 | US4058393 Process for the beneficiation of titaniferous ores |
| 10/25/1977 | US4055621 Chlorination, fluidization, roasting |
| 10/18/1977 | US4054517 Chrome removal and recovery |
| 09/27/1977 | US4051221 Process for the separate recovery of vanadium and molybdenum |
| 09/20/1977 | US4049438 Non-ferrous metal recovery from deep sea nodules |
| 09/20/1977 | US4049385 Graphite shell and tube |
| 09/06/1977 | US4046854 Recovery of titanium tetrachloride |
| 09/06/1977 | US4046853 From iron containing titaniferous ore |
| 08/30/1977 | US4045216 Direct reduction of molybdenum oxide to substantially metallic molybdenum |
| 08/23/1977 | US4044116 Method for the complete dissolution of mineral samples |
| 08/23/1977 | US4043599 Acid preinjection to decrease instantaneous acid consumption in in-situ mining |
| 08/16/1977 | US4042474 Separating nickel, cobalt and chromium from iron in metallurgical products |
| 08/02/1977 | US4039614 Method of preparing vanadium pentoxide from metallurgical slags containing vanadium |
| 08/02/1977 | US4039325 Vacuum smelting process for producing ferromolybdenum |
| 07/26/1977 | US4038364 Reducing agent of hydrogen, steam, and carbon monoxide or dioxide |
| 07/26/1977 | US4038363 Upgrading sorelslag for production of synthetic rutile |
| 07/19/1977 | US4036637 Dissolving in a molten metal solvent |
| 07/12/1977 | US4034969 Oxidation roasting of ore |
| 06/28/1977 | US4032329 Metal reduction process employing metal sub-halides |
| 06/28/1977 | US4032328 Metal reduction process |
| 06/14/1977 | US4029734 Recovery of chromium values |
| 05/31/1977 | US4026773 Extracting metal values from manganiferous ocean nodules |
| 05/17/1977 | US4023959 Method for recovering vanadium from magnetite and forming a magnetite product low in sodium and silica |
| 05/03/1977 | US4021531 Process for the separation of zirconium and hafnium tetrachlorides from mixtures thereof |
| 04/26/1977 | US4020105 Oxime |
| 04/26/1977 | US4019898 Leaching with hydrochloric acid |
| 04/19/1977 | US4018866 Metal carbonate recycle to reduction circuit in the cuprion process |
| 04/12/1977 | US4017583 Volitilization process for separation of molybdenum-99 from irradiated uranium |
| 04/12/1977 | US4017304 Process for selectively chlorinating the titanium content of titaniferous materials |
| 04/05/1977 | US4016054 Hydrometallurgical treatment process for extracting constituent metal values from ferro-nickel |
| 03/29/1977 | US4014976 Process for production of titanium tetrachloride |
| 03/22/1977 | US4013755 From sulfuric acid treatment of ilmenite or titanium slag |
| 03/15/1977 | US4012484 Chromite recovery from chromite-bearing ore |
| 02/22/1977 | US4009247 Production of metal carbides |
| 02/15/1977 | US4008104 Method for dephosphorization and denitrification of an alloy containing easily oxidizable components |
| 02/15/1977 | US4008077 Chelating agent, aluminum coated with alumina |
| 02/01/1977 | US4006215 Recovering iron, nickel, or cobalt from sulfate solution |
| 02/01/1977 | US4006212 Process for recovery of molybdenum and rhenium from ores |
| 01/25/1977 | US4005175 Sulfate process |
| 12/28/1976 | US4000244 Wet-chemical digestion of molybdenum sulphide containing material |
| 12/28/1976 | US3999981 Production and recovery of metallic carbides from ores and concentrates |
| 12/28/1976 | US3999951 Apparatus for chlorinating metal-bearing materials |
| 12/07/1976 | US3996332 Synthesis of rutile from titaniferous slags |
| 11/23/1976 | US3993471 Roasting powdered mineral ore, anthracite and binder |
| 11/16/1976 | US3992193 Metal oxides, quenching |
| 11/09/1976 | US3991157 Process for producing titanium tetrachloride |
| 11/02/1976 | US3989512 Plasma heat treatment means and method |
| 11/02/1976 | US3989511 Metal powder production by direct reduction in an arc heater |
| 11/02/1976 | US3989510 Manufacture of titanium chloride and metallic iron from titaniferous materials containing iron oxides |
| 10/26/1976 | US3988418 Hydrometallurgical production of technical grade molybdic oxide from molybdenite concentrates |
| 10/26/1976 | US3988416 Elevated pressure operation in the cuprion process |
| 10/26/1976 | US3988150 Liquid gallium-aluminum alloy |
| 09/28/1976 | US3983208 Recovery of vanadium and copper catalyst metals using ketones |
| 08/31/1976 | US3977866 Method for producing titanium |
| 08/31/1976 | US3977864 Process for selectively chlorinating the titanium content of titaniferous materials |
| 08/31/1976 | US3977863 Hydrochloric acid, iron chloride |
| 08/24/1976 | US3976761 Preparation of TiO2 and artificial rutile from sodium titanate |