| Patents for C22B 34 - Obtaining refractory metals (6,435) |
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| 08/22/2001 | CN1309724A Removal of oxygen from metal oxides and solid solutions by electrolysis in fused salt |
| 08/16/2001 | WO2001059166A1 Production of nitrogen-containing tantalum or niobium powder and solid electrolytic capacitor |
| 08/16/2001 | WO2000006786A8 Beneficiation of titania slag by oxidation and reduction treatment |
| 08/01/2001 | CN1306585A Tantalum-silicon alloys and products contg. same and processes of making same |
| 07/26/2001 | DE10053737A1 Production of hydrogen storage alloy based on zirconium for nickel-metal hydride secondary cell comprises melting scrap zirconium alloy with titanium, vanadium, manganese, nickel and chromium and conversion to powder |
| 07/25/2001 | EP0934432B1 METHOD OF DE-CHROMING AND/OR DEPLETING THE MgO CONTENT OF STEEL SLAG |
| 07/25/2001 | CN1305537A Process to recover molybdenum and vanadium metal from spent catalyst by alkaline leaching |
| 07/24/2001 | US6264912 Methods for producing monodispersed particles of barium titanate |
| 07/24/2001 | US6264884 Purification hearth |
| 07/24/2001 | US6264719 Titanium alloy based dispersion-strengthened composites |
| 07/17/2001 | US6261337 Low oxygen refractory metal powder for powder metallurgy |
| 07/12/2001 | US20010007646 Leaching ore with aqueous solution of hydrogen halide; separating solids from leachate; subjecting leachate to extraction with immiscible organic phase that selectively removes iron values; |
| 07/04/2001 | CN1302338A Method for processing steel slags |
| 07/04/2001 | CN1068063C Recovery method of metal values from solids by digestion in sulfuric acid medium including reductant |
| 07/04/2001 | CN1068061C Recovery method of metal values |
| 07/04/2001 | CN1068058C Method for separating titanium and/or vanadium from pig iron |
| 06/28/2001 | WO2001045906A2 Production of metals and their alloys |
| 06/26/2001 | US6251160 Method of de-chroming and/or depleting the MgO content of steel slag |
| 06/20/2001 | EP0777753B1 Method of making metals and other elements |
| 06/19/2001 | US6248302 Digestion, heating, dissolving water soluble salts, separation |
| 06/14/2001 | WO2001042520A1 Method of high-temperature digesting titanium containing material with sulfuric acid |
| 06/14/2001 | WO2001042518A1 Method of digesting metal containing material at elevated temperature in the presence of sulphur oxide compound source such as h2s04 |
| 06/12/2001 | US6245240 Contaminated with soluble manganese salt comprising adding an oxidising agent to convert salt to manganese dioxide, addition of manganese dioxide as seeding agent, seed particles are produced by reacting ferrous sulphate and potassiumm, iron |
| 06/12/2001 | US6245211 Process for obtaining titanium or other metals using shuttle alloys |
| 06/07/2001 | WO2001041151A2 Nuclear fuel dissolution |
| 06/05/2001 | US6241806 Recovering vanadium from petroleum coke as dust |
| 05/30/2001 | EP1102651A1 Purification process for chromium |
| 05/29/2001 | US6238456 Purified tantalum powder produced by thermal agglomeration of crude powder in a reducing atmosphere of hydrogen |
| 05/23/2001 | EP1100747A1 Process for chlorine recovery |
| 05/22/2001 | US6235253 Recovering vanadium oxides from petroleum coke by melting |
| 05/15/2001 | US6231640 Exothermic oxidation |
| 05/15/2001 | US6231636 Mechanochemical processing for metals and metal alloys |
| 05/10/2001 | DE19960362C1 Apparatus for continuously casting ingots made of a titanium alloy comprises an intermediate crucible arranged between the heat source and the continuous casting mold |
| 05/01/2001 | CA2011855C Process of treating metal chloride wastes |
| 04/17/2001 | CA2029494C Production of sponge metal from sponge metal fines |
| 04/11/2001 | EP1090153A1 Tantalum sputtering target and method of manufacture |
| 04/11/2001 | EP1090152A1 Method for processing steel slags |
| 04/11/2001 | CN1291217A Process and furnace for production of TiO2 pigment according to sulfate process |
| 04/10/2001 | US6214301 Hafnium radioisotope recovery from irradiated tantalum |
| 04/10/2001 | CA2196534C Method of making metals and other elements |
| 04/04/2001 | EP1088113A1 Removal of oxygen from metal oxides and solid solutions by electrolysis in a fused salt |
| 04/03/2001 | US6210634 Highly purified titanium material, method for preparation of it and sputtering target using it |
| 04/03/2001 | US6210461 Continuous production of titanium, uranium, and other metals and growth of metallic needles |
| 03/15/2001 | WO2001018271A1 Purification hearth |
| 03/15/2001 | CA2382515A1 Purification hearth |
| 03/07/2001 | EP1080242A1 Tantalum-silicon alloys and products containing the same and processes of making the same |
| 03/07/2001 | EP1080239A1 Process to recover molybdenum and vanadium metals from spent catalyst by alkaline leaching |
| 03/06/2001 | US6197082 Refining of tantalum and tantalum scrap with carbon |
| 02/27/2001 | US6193941 Scrubbing from synthesis gas formed in partial oxidation by aqueous scrubbing solution; filtering; drying filter cake; burning a dust-free soot conditioned in pulverized fuel burner; cooling; releasing heat; separating off heavy metals |
| 02/27/2001 | US6193779 Tantalum powder that is free of alkali and fluorine |
| 02/22/2001 | WO2001012867A1 Apparatus and method of producing tantalum by continuous process |
| 02/22/2001 | WO2001012556A1 Titanium tetrachloride production |
| 02/22/2001 | WO2001012364A1 Low oxygen refractory metal powder for powder metallurgy |
| 02/22/2001 | WO2000073247A9 Thermal device and method for production of carbon monoxide and hydrogen by thermal dissociation of hydrocarbon gases |
| 02/22/2001 | CA2346957A1 Low oxygen refractory metal powder for powder metallurgy |
| 02/20/2001 | US6190625 Oxidation of molybdenum sulfides to molybdenum triooxide; submerged cooling tube controls temperature |
| 02/14/2001 | CN1283706A Process for preparing Ti-enriched material from ilmenite concentrate |
| 02/14/2001 | CN1062023C Method for recovering copper and chromium from waste industrial catalyst |
| 02/13/2001 | US6187226 A thermodynamically stable high temperature process; heating the reactant stream and expanding through the outlet end of the reaction chamber to cool the gaseous stream, converting thermal energy to kinetic energy |
| 01/30/2001 | US6180080 Reducing ph of solution to within a range of about 1 to 3 by adding an acid, then adding a peroxygen compound to solution at a temperature of 20 to 110 degrees c while maintaining said ph and converting thiosulfate to sulfur |
| 01/30/2001 | US6180072 Process to recover metals from spent catalyst |
| 01/30/2001 | CA2210743C Method to upgrade titania slag and resulting product |
| 01/23/2001 | CA2055428C Production of acid soluble titania |
| 01/17/2001 | CN1060819C Process for production of pure solutions of tungsten and molybdenum |
| 01/17/2001 | CN1060818C Process for producing hydraulic binder rough steel, metal and/or alloy, e.g. ferrochromium or ferrovanadium |
| 01/11/2001 | WO2001002299A1 A process for controlling the passivation of aluminum chloride formed in the chlorination of titanium-containing ores |
| 01/11/2001 | CA2376590A1 A process for controlling the passivation of aluminum chloride formed in the chlorination of titanium-containing ores |
| 01/09/2001 | US6171563 Supported liquid membrane process for chromium removal and recovery |
| 01/09/2001 | US6171363 Method for producing tantallum/niobium metal powders by the reduction of their oxides with gaseous magnesium |
| 01/03/2001 | EP1064223A1 METHOD FOR REPROCESSING WASTE ACID RESULTING FROM TiO 2? PRODUCTION |
| 01/02/2001 | US6168644 Titanium hydride powder with a maximum particle diameter of substantially 150 mum or less; dehydrogenating the lumps of the titanium hydride; controlling the particle size |
| 12/28/2000 | WO2000079014A1 Method for recovering metallic chromium from slag containing chromium oxide |
| 12/26/2000 | US6165412 One step forming a potassium-doped tungsten powder, pressing to form a compact, sintering |
| 12/20/2000 | EP1060219A1 PROCESS AND FURNACE FOR THE PRODUCTION OF TiO 2? PIGMENT ACCORDING TO THE SULFATE PROCESS |
| 12/14/2000 | WO2000075075A1 Beneficiation of zircon |
| 12/07/2000 | WO2000073247A1 Thermal device and method for production of carbon monoxide and hydrogen by thermal dissociation of hydrocarbon gases |
| 11/28/2000 | US6153155 Coking residue to produce liquid, gaseous, and coke product; separating liquid; dividing coke into two fractions; combusting fractions to form flue gas and flue dust; leaching dust with solution of ammonia and ammonium carbonate |
| 11/28/2000 | US6152982 Reduction of metal oxides through mechanochemical processing |
| 11/21/2000 | US6149712 Sintered high titanium agglomerates |
| 11/16/2000 | WO2000067936A1 Metal powders produced by the reduction of the oxides with gaseous magnesium |
| 11/07/2000 | US6144690 Melting method using cold crucible induction melting apparatus |
| 11/02/2000 | WO2000065108A1 Method for processing steel slags |
| 10/24/2000 | US6136706 Process for making titanium |
| 10/24/2000 | US6136062 Niobium powder and a process for the production of niobium and/or tantalum powders |
| 10/24/2000 | US6136060 Low cost high speed titanium and its alloy production |
| 10/18/2000 | EP1045216A2 Melting method using cold crucible induction melting apparatus, tapping method and apparatus, and titanium and titanium alloy produced using the apparatus |
| 10/11/2000 | CN1269848A Electrochemical dissolution of nuclear fuel pins |
| 10/10/2000 | US6129890 Wet doping tungsten blue oxide with a solution containing potassium, sillicon and aluminum and drying to form single doped tungsten blue oxide, dry doping with potassium nitrate to form double doped oxide, reducing, acid washing, pressing |
| 09/28/2000 | WO2000056662A1 Vanadium oxidation method |
| 09/27/2000 | CN1267741A Normal-pressure base decomposing technology of scheelite |
| 09/21/2000 | WO2000055931A1 Metal sponges for rapid surface-chemical reactions |
| 09/21/2000 | CA2367990A1 Metal sponges for rapid surface-chemical reactions |
| 09/20/2000 | CN1267339A Titanium alloy based dispersion-strengthened composites |
| 09/13/2000 | EP1034136A1 Treatment of a solution containing iron salts |
| 09/12/2000 | US6117208 Reducing titanium oxide or zirconium oxide with calcium in presence of a mixture of calcium chloride and calcium fluoride, embedding the formed titanium or zirconium powder in the molten zinc alloy and settle to the bottom, separating |
| 09/12/2000 | CA2134264C Process for production of molybdenum-99 and management of waste therefrom |
| 09/08/2000 | WO2000052215A1 Endothermic heat treatment of solids loaded on trolleys moving in a kiln |
| 09/05/2000 | US6113666 Method of magnetically-controllable, electroslag melting of titanium and titanium-based alloys, and apparatus for carrying out same |
| 08/31/2000 | WO2000050650A1 Filter-press type electrochemical cell |
| 08/30/2000 | EP1031633A1 Electrochemical cell of the filter press type for the lixiviation of slurries containing valuable metals |