| Patents for C22B 34 - Obtaining refractory metals (6,435) |
|---|
| 06/13/2007 | EP1451380B1 Process for the treatment of molybdenum concentrate also containing copper |
| 06/13/2007 | CN1978325A Method for producing titanium product from titanic slag for titanium white waste sulfuric acid treatment |
| 06/06/2007 | CN1975305A Closed electric furnace and titanium slag smelting process |
| 06/06/2007 | CN1320142C Method for enriching vanadium in vanadium containing steel slag |
| 06/06/2007 | CN1320141C Method for preparing rutile type titanium-rich material from primary titanium-rich material |
| 05/31/2007 | WO2007044635A3 Titanium or titanium alloy with titanium boride dispersion |
| 05/31/2007 | US20070122325 Production of titania |
| 05/30/2007 | EP1789609A1 Electrochemical reduction of metal oxides |
| 05/30/2007 | CN1970803A Process for smelting ferrovanadium by extraction of vanadium from vanadium-containing errophosphorus |
| 05/22/2007 | US7220394 Economical and environment-friendly process for recovery of chromium and iron and avoids landfilling of toxic metals |
| 05/22/2007 | US7219412 having less than 100 parts per million (ppm), by weight, of a combined total of interstitial materials selected from the group consisting of nitrogen, oxygen, carbon and hydrogen |
| 05/17/2007 | US20070110647 Process for the recovery of titanium dioxide from titanium-containing compositions |
| 05/17/2007 | US20070108672 Method for producing molybdenum metal and molybdenum metal |
| 05/16/2007 | CN1963361A Heater furnace to produce titanium sponge by combination method |
| 05/16/2007 | CN1962906A Process for charging titanium tetrachloride for use in preparation of titanium sponge by magnesium method |
| 05/16/2007 | CN1316065C Reduction of metal oxides in an electrolytic cell |
| 05/15/2007 | US7217366 Highly pure ammonium molybdate solutions; filtering industrial ammonium metallate by contacting a feed solution of ammonium metallate and alkali metal impurities with the retentate side of said membrane; withdrawing impurities; repeating |
| 05/10/2007 | WO2007052801A1 Method for extraction of rutile |
| 05/09/2007 | EP1088113B9 Electrolytic process for removing a substance from solid compounds |
| 05/09/2007 | CN1961098A Electrochemical reduction of metal oxides |
| 05/09/2007 | CN1961086A Production of titania |
| 05/08/2007 | US7214362 Dissolving a niobium compound including tantalum as an impurity in an HydroFluoric acid solution; precipitating crystals of a niobium compound, separating, dissolving the precipitated crystals in an aqueous solution, adding an organic solvent, extracting and recovering a highly pure niobium compound |
| 05/02/2007 | CN1957097A Agglomeration of titania |
| 05/02/2007 | CN1313232C Method and device for producing metal powder |
| 05/01/2007 | CA2221703C Process for recovery of metal ions |
| 04/26/2007 | WO2007011397A3 Molybdenum metal powder and production thereof |
| 04/26/2007 | US20070092425 Process for purifying inorganic materials |
| 04/26/2007 | CA2625087A1 Titaniferous ore beneficiation |
| 04/25/2007 | EP1776491A1 Production of titanium |
| 04/25/2007 | CN1954086A Method for reducing cr in metallurgical slags containing cr |
| 04/25/2007 | CN1952193A Comprehensive utilization technology for detoxification of chromium residues by waterproof pulverization and high-temperature calcination |
| 04/25/2007 | CN1952192A Process for extracting vanadium from peroxide sintered ore and furnace slag |
| 04/25/2007 | CN1952188A Process for separation and production of titanium-rich materials from titanium-containing blast furnace slag |
| 04/25/2007 | CN1952187A Process for extracting tungsten metal and other rare metal from waste and old hard alloy |
| 04/25/2007 | CN1311943C Method for producing metal powder and formed product of raw material for metal |
| 04/24/2007 | US7208075 Reduction of metal oxides in an electrolytic cell |
| 04/19/2007 | WO2007044635A2 Titanium or titanium alloy with titanium boride dispersion |
| 04/19/2007 | CA2623544A1 Titanium or titanium alloy with titanium boride dispersion |
| 04/18/2007 | EP1633896A4 Process for purifying inorganic materials |
| 04/12/2007 | WO2007039938A1 METHOD OF ROASTING V, Mo AND Ni-CONTAINING MATTER, AND ROTARY KILN FOR ROASTING OF V, Mo AND Ni-CONTAINING MATTER |
| 04/12/2007 | WO2007020338A3 Method of preparing calcium tungstate, vanadate and molybdate and mixtures of same |
| 04/12/2007 | CA2624296A1 A method of recovering a valuable metal comprising v, mo and ni, and a system for such recovery |
| 04/11/2007 | CN1309660C Method for purifying metal salt, method of deoxidating titanium material and producing method for same |
| 04/04/2007 | CN1942594A Method of roasting V, MO and NI-containing matter, and rotary kiln for roasting of V, MO and NI-containing matter |
| 04/04/2007 | CN1940096A Extraction of vanadium and molybdenum compound from refused materials containing vanadium and molybdenum etc. multiple elements |
| 03/29/2007 | WO2007034645A1 PROCESS FOR PRODUCING Ti AND APPARATUS THEREFOR |
| 03/29/2007 | CA2623212A1 Process for producing ti and apparatus therefor |
| 03/28/2007 | CN1936037A Method for oxidizing-converting-leaching vanadium from converter steelmaking extracted vanadium slag under pressure field |
| 03/28/2007 | CN1936027A Method for producing titanium oxide containing slag |
| 03/22/2007 | WO2007032228A1 Methods for recovery of molybdenum and process for preparation of catalysts |
| 03/22/2007 | WO2007031246A2 Reduction method |
| 03/22/2007 | CA2622336A1 Reduction process |
| 03/21/2007 | EP1649082A4 Low temperature refining and formation of refractory metals |
| 03/21/2007 | CN1306044C Method for producing titanium oxide containing slag |
| 03/20/2007 | US7192564 Cooling melt to harden; extraction, separation |
| 03/20/2007 | US7192467 directly from precursor material comprised nano-particles of molybdic oxide (MoO3) without intermediate step |
| 03/14/2007 | EP1761353A1 Metalothermic reduction of refractory metal oxides |
| 03/08/2007 | WO2007027466A2 Production of fine grain micro-alloyed niobium sheet via ingot metallurgy |
| 03/08/2007 | WO2007026565A1 METHOD FOR ELECTROLYSIS OF MOLTEN SALT, ELECTROLYTIC CELL, AND PROCESS FOR PRODUCING Ti USING SAID METHOD |
| 03/08/2007 | WO2006136948A3 Chemical beneficiation of raw material, containing tantalum-niobium |
| 03/08/2007 | CA2620402A1 Method for electrolysis of molten salt, electrolytic cell, and process for producing ti using said method |
| 03/08/2007 | CA2619813A1 Production of fine grain micro-alloyed niobium sheet via ingot metallurgy |
| 03/07/2007 | EP1758823A1 Tungstic acid powder consisting of spherical tungsten particles and method for producing same |
| 03/07/2007 | CN1303233C Iron-extraction process ferro-tungsten production using schellite, tungsten waste and iron ore as raw material |
| 02/28/2007 | EP1756007A1 Method for producing titanium dioxide according to the sulfate process |
| 02/28/2007 | CN1921941A Method for recovering molybdenum and method for preparing catalyst |
| 02/28/2007 | CN1920069A Method of detoxifying chromic slag by bacteria |
| 02/28/2007 | CN1919508A Metal powders produced by the reduction of the oxides with gaseous magnesium |
| 02/27/2007 | US7183114 Determining the concentration and ratio of carbon monoxide to carbon dioxide in the gaseous product of a fluidized bed reactor for producing titanium tetrachloride using infrared analysis |
| 02/27/2007 | US7182931 from titanium oxide, chlorine and oxygen, analyzing the chlorinator tail gas for residual chlorine using an on-line chlorine analyzer. |
| 02/27/2007 | US7182926 Process for separating and recovering valuable metals |
| 02/27/2007 | US7182925 Tantalum concentrates dissolution and purification method |
| 02/22/2007 | WO2006037999A3 Electro-reduction process |
| 02/21/2007 | EP1753566A1 Method for the production of niobium and tantalum powder |
| 02/21/2007 | CN1917975A Method and apparatus for perimeter cleaning in cold hearth refining |
| 02/15/2007 | WO2007018805A2 Process for metals recovery from spent catalyst |
| 02/15/2007 | WO2006078901A3 Process for the recovery of materials from a desulfurization reaction |
| 02/15/2007 | CA2616375A1 Process for metals recovery from spent catalyst |
| 02/14/2007 | EP1537248B1 Producing metallic articles by reduction of nonmetallic precursor compounds and melting |
| 02/14/2007 | CN1912155A Method of titanium or titanium alloy melting liquid deoxidizing purification |
| 02/14/2007 | CN1300003C Autoclave control method for pressure oxidation of molybdenite |
| 02/13/2007 | US7175823 Purification method for producing high purity niobium compound and/or tantalum compound |
| 02/08/2007 | WO2007014422A1 Electrochemical reduction of metal oxides |
| 02/08/2007 | US20070029208 Thermal and electrochemical process for metal production |
| 02/07/2007 | EP1749110A1 Upgrading of zircon |
| 02/07/2007 | EP1625351B1 Method for the analysis of gas produced by a titanium tetrachloride fluidized bed reactor |
| 02/07/2007 | EP1558771B1 Production of titania |
| 02/07/2007 | CN1908209A Titanium tetrachloride atomization method of preparing titanium sponge using magnesium |
| 02/07/2007 | CN1298872C Phosphorus-eliminating purification process of vanadium-containing chamotte leachate |
| 02/01/2007 | US20070025899 Process for metals recovery from spent catalyst |
| 01/31/2007 | EP1747297A1 Method for reducing cr in metallurgical slags containing cr |
| 01/31/2007 | CN1904097A Technology of preparing fluorine less niobium oxide by oxalic acid system extraction method |
| 01/31/2007 | CN1904096A Copper wire tower having supporting device used for removing vanadium impurity in titanium tetrachloride |
| 01/31/2007 | CN1904092A Method of oxidizing transforming leaching vanadium from stone coal under pressure field |
| 01/30/2007 | US7169371 Process for the treatment of molybdenum concentrate |
| 01/25/2007 | US20070018361 Nanofibers, and apparatus and methods for fabricating nanofibers by reactive electrospinning |
| 01/25/2007 | US20070018138 Highly pure hafnium material, target thin film comprising the same and method for producing highly pure hafnium |
| 01/24/2007 | CN1900329A Distilling path dredger on cold end reactor large lid for producing sponge titanium |
| 01/24/2007 | CN1899728A Valve metal powders and process for producing them |
| 01/24/2007 | CN1296520C Method and apparatus for smelting titanium metal |