| Patents for C22B 34 - Obtaining refractory metals (6,435) |
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| 10/06/2004 | CN1169643C Preparation method of high specific surface area tantalum powder and/or niobium powder |
| 10/05/2004 | US6800260 Processes for treating iron-containing waste streams |
| 10/05/2004 | US6800259 Using a copper compound; reduction |
| 10/05/2004 | US6800111 Concentrating the catalytic metal colloid on a filter; removing the catalytic metal of the catalytic metal colloid from the filter with an oxidizer; collecting the catalytic metal |
| 09/23/2004 | WO2004081238A1 Process for producing reduced matal and agglomerate with carbonaceous material incorporated therein |
| 09/23/2004 | WO2004058431A3 Method and apparatus for melting titanium using a combination of plasma torches and direct arc electrodes |
| 09/22/2004 | EP1458897A1 Chromium removal from leach liquors produced during high pressure acid leaching of lateritic ores |
| 09/22/2004 | CN1531508A Autoclave control method for pressure oxidation of molybdenite |
| 09/21/2004 | CA2090919C Process for isolating tantalum and niobium |
| 09/14/2004 | US6790319 Method for recovering titanium compound, process for preparing titanium halide, and process for preparing catalyst for polymer production |
| 09/10/2004 | WO2004076496A2 Process for making titanium dioxide |
| 09/09/2004 | US20040173470 Reduction of metal oxides in an electrolytic cell |
| 09/07/2004 | US6788525 Powdered tantalum, niobium, production process thereof and porous sintered body and solid electrolytic capacitor using the powdered tantalum or niobium |
| 09/07/2004 | US6786951 Reduction of tantalum and/or niobium oxides with magnesium, calcium, strontium, barium or cerium halides |
| 09/02/2004 | US20040168548 Production process for niobium powder |
| 09/01/2004 | EP1451380A2 Process for the treatment of molybdenum concentrate also containing copper |
| 08/26/2004 | US20040166054 from titanium oxide, chlorine and oxygen, analyzing the chlorinator tail gas for residual chlorine using an on-line chlorine analyzer. |
| 08/26/2004 | US20040166045 Ceramics and method of producing ceramics |
| 08/25/2004 | EP1448802A2 Electrochemical processing of solid materials in fused salt |
| 08/24/2004 | US6780384 Method and system for recovering zirconium values from a hard rock ore containing uranium |
| 08/24/2004 | US6780218 Production process for niobium powder |
| 08/19/2004 | WO2004070066A1 A method for increasing the chrome to iron ratio of chromites products |
| 08/19/2004 | US20040161379 Method for manufacturing nanophase TiC-based composite powders by metallothermic reduction |
| 08/19/2004 | US20040159559 Electrolysis of calcium, barium, lithium, cesium, or strontium chloride; reducing level of dissolved oxygen or other elements from solid metals, metal compounds and semi-metal compounds and alloys |
| 08/18/2004 | CN1522315A Reduction of metal oxides in an electrolytic cell |
| 08/18/2004 | CN1162437C Process for recovering titanium compound and process for preparing titanium halide and polymerization catalyst |
| 08/12/2004 | US20040154436 Method for producing granular metal |
| 08/11/2004 | EP1445350A1 Method and apparatus for smelting titanium metal |
| 08/11/2004 | CN1161607C Method for separating and analyzing Nb, Ta, Zr and Hf |
| 08/06/2004 | CA2418546A1 A method for increasing the chrome to iron ratio of chromites products |
| 08/04/2004 | EP1443121A1 Process of neutralizing and recycling digested residues from the sulphate process production of dioxide of titanium |
| 08/03/2004 | US6770255 Process for chlorine recovery |
| 07/29/2004 | DE10303287A1 Improving filter cake neutralization in titanium dioxide production by sulfate process, involves using a basic-reacting solution or suspension in the membrane chamber filter press |
| 07/28/2004 | EP1440175A2 Superconductor materials and fabrication method using electrolytic reduction and infiltration |
| 07/28/2004 | CN1516744A Method for producing granular metal |
| 07/22/2004 | WO2004061138A1 Method for reducing chromium containing raw material |
| 07/22/2004 | WO2004060594A1 Process for the production of elemental material and alloys |
| 07/15/2004 | WO2004058636A1 Process and tubular for recovery of chlorine from iron chlorides |
| 07/15/2004 | WO2004058431A2 Method and apparatus for melting titanium using a combination of plasma torches and direct arc electrodes |
| 07/15/2004 | US20040136899 Recovery of titanium dioxide from titanium oxide bearing materials like steelmaking slags |
| 07/15/2004 | US20040136889 reprocessing heavy metal chlorides by precipitated the hydroxides, then thickened in the form of sludge and further dewatered; landfilling |
| 07/15/2004 | DE10260737A1 Verfahren und Anlage zur Wärmebehandlung von titanhaltigen Feststoffen Method and apparatus for heat treatment of titanium-containing solids |
| 07/15/2004 | CA2510611A1 Process and tubular reactor for recovery of chlorine from iron chlorides |
| 07/14/2004 | EP1437420A1 Method for producing titanium oxide containing slag |
| 07/08/2004 | WO2004057043A1 Process for purifying inorganic materials |
| 07/08/2004 | WO2004057040A1 Fluidized bed method and plant for the heat treatment of solids containing titanium |
| 07/08/2004 | WO2004028655A3 Filter cake treatment method |
| 07/08/2004 | CA2510926A1 Fluidized bed method and plant for the heat treatment of solids containing titanium |
| 07/07/2004 | CN1511195A Process for selectively removing molybdenum from liquid mixtures containing it together with vanadium |
| 07/01/2004 | WO2004054686A2 Circumferential air knife and applications |
| 07/01/2004 | WO2004033748A3 Method to recover spent components of a sputter target |
| 07/01/2004 | WO2004024656A3 Process for reducing chromium in nonvolatile residue resulting from air oxidation of cyclohexane |
| 07/01/2004 | US20040123700 Reacting a halide with reducing agents in solid phase in fluidized bed |
| 06/30/2004 | EP1433861A2 Methods for producing a metallic alloy |
| 06/24/2004 | WO2004053201A1 Electrochemical reduction of metal oxides |
| 06/24/2004 | WO2004053173A1 METHOD FOR RECOVERING VALUABLE METAL FROM WASTE CONTAINING V, Mo AND Ni |
| 06/24/2004 | WO2004052778A2 Plasma synthesis of metal oxide nanopowder and apparatus therefor |
| 06/24/2004 | US20040118246 Oxidation; forming metal oxide chemical intermediate ; reducing metal oxide to alloy |
| 06/22/2004 | US6752858 Circumferential air knife and applications |
| 06/17/2004 | WO2004050955A2 Separation of metals |
| 06/17/2004 | WO2004050928A1 Low cost high speed titanium and its alloy production |
| 06/17/2004 | US20040115085 Method for producing a metallic alloy by dissolution, oxidation and chemical reduction |
| 06/17/2004 | US20040112216 Circumferential air knife and applications |
| 06/17/2004 | US20040112176 directly from precursor material comprised nano-particles of molybdic oxide (MoO3) without intermediate step |
| 06/16/2004 | EP1428896A2 Method for producing a metallic alloy by dissolution, oxidation and chemical reduction |
| 06/15/2004 | US6749663 Reducing and carburizing tungsten and/or molybdenum oxide powders in the presence of alkali metal compounds |
| 06/10/2004 | WO2004048622A1 Separation system of metal powder from slurry and process |
| 06/10/2004 | WO2004022269A9 Method and apparatus for controlling the size of powder produced by the armstrong process |
| 06/10/2004 | CA2506765A1 Separation system of metal powder from slurry and process |
| 06/09/2004 | EP1425439A1 Method of manufacturing titanium and titanium alloy products |
| 06/09/2004 | EP1034136B1 Treatment of a solution containing iron salts |
| 06/03/2004 | US20040104125 Intermetallic compounds |
| 06/03/2004 | US20040103751 producing titanium tetrachloride as molten slag by chlorinating ore and removing impurities by distillation, introducing into plasma chamber for gas phase reduction to form titanium drops, then heating with plasma guns |
| 05/27/2004 | US20040099396 Method for forming consumable electrodes from metallic chip scraps |
| 05/26/2004 | EP1268105B1 Method for manufacturing metal parts |
| 05/26/2004 | EP1007750B1 Titanium alloy based dispersion-strengthened composites |
| 05/26/2004 | CN1500156A Extraction of metals |
| 05/21/2004 | WO2004042095A1 A process for the production of niobium and/or tantalum powder with large surface area |
| 05/21/2004 | WO2004022797A9 Preparation of alloys by the armstrong method |
| 05/18/2004 | US6737030 Extracting an aqueous feed mix comprising zirconium oxychloride and hafnium oxychloride and a thiocyanate salt with thiocyanate-containing organic solvent to produce a aqueous raffinate stream and organic raffinate stream |
| 05/18/2004 | US6737017 Method for preparing metallic alloy articles without melting |
| 05/13/2004 | WO2004040027A1 A process for simultaneous recovery of chromium and iron from chromite ore processing residue |
| 05/13/2004 | WO2004039523A1 Method for preparing metal powder and method for evaluating raw material or diluting salt for use therein |
| 05/12/2004 | CN1149295C Apparatus and method of producing tantalum by continuous process |
| 05/11/2004 | US6733561 Production of high titania slag from ilmenite |
| 05/06/2004 | WO2004038048A1 Method and device for carrying out a tribochemical reaction |
| 05/06/2004 | WO2004037470A1 Niobium powder, process for producing the same and solid electrolytic capacitor therefrom |
| 05/06/2004 | US20040086438 Process for simultaneous recovery of chromium and iron from Chromite Ore Processing Residue |
| 05/06/2004 | US20040084323 Electrolysis of halide salt of calcium, barium, lithium, sodium, potassium, magnesium, strontium, cesium, and/or yttrium; alloying, chemical reduction, denitrification, desulfurization; heat and chemical resistance |
| 05/06/2004 | DE10249163A1 Verfahren und Vorrichtung zur Nutzung von Faraday-Instabilitäten zur Durchführung von tribochemischen Reaktionen A method and apparatus for utilizing Faraday instabilities on the implementation of tribochemical reactions |
| 05/04/2004 | US6730279 Forming aqueous slurry of low grade molybdenite concentrates; oxidizing; filtering discharge; leaching solid filter cake with an alkaline solution; filtering second discharge; recovering the molybdenum value; crystallization |
| 04/29/2004 | WO2004035873A1 Minimising carbon transfer in an electrolytic cell |
| 04/29/2004 | WO2004035843A1 Production of titania |
| 04/29/2004 | WO2004035842A1 Production of titania |
| 04/29/2004 | WO2004035841A1 Production of titania |
| 04/29/2004 | WO2004007775A3 Direct melting and refining of metal oxide material |
| 04/29/2004 | US20040079197 Preparation of alloys by the armstrong method |
| 04/29/2004 | US20040079196 Injecting, reduction halide vapor into liquid metal; controlling temperature |
| 04/29/2004 | DE19519722B4 Verfahren zur Herstellung von Nioboxid Process for the preparation of niobium oxide |
| 04/29/2004 | DE10296846T5 Verfahren zum selektiven Entfernen von Molybdän aus flüssigen Mischungen, die dieses zusammen mit Vanadium enthalten A process for selectively removing molybdenum from liquid mixtures containing this together with vanadium |