Patents
Sitemap › C22 - Metallurgy; Ferrous or non-ferrous alloys; Treatment of alloys or non-ferrous metals › C22B - Production or refining of metals; Pretreatment of raw materials › C22B 34 - Obtaining refractory metals
Patents for C22B 34 - Obtaining refractory metals (6,435)
12/1996
12/12/1996WO1996039359A1 Process for the reduction of carbochlorination residue
12/12/1996WO1996039241A1 Porous carbon filter assembly for processing zirconium chloride
12/05/1996WO1996038220A1 Process for recovery of metal ions
12/05/1996DE19519722A1 Pyrometallurgical prodn. of niobium oxide
12/03/1996US5580516 Deoxygenation by heating with magnesium
11/1996
11/27/1996EP0744380A1 Reclamation process for tungsten carbide and tungsten-based materials
11/27/1996CN1136534A Production of rutile type TiO2 by impurity removing oxidation method
11/26/1996US5578109 Removal of radioactive impurities by contacting with a glassy material at high temperature, ilmenite, rutile
11/26/1996CA1338731C Method of smelting reduction of chromium raw materials and a smelting reduction furnace thereof
11/24/1996CA2176179A1 Reclamation process for tungsten carbide and tungsten-based materials
11/19/1996US5575831 Reducing zirconium or vanadium oxides with calcium
11/13/1996EP0741802A1 Leaching of titaniferous materials
11/12/1996US5573572 Iron, smelting, carbon reducing agent, roasting, resmelting, from low tantalum raw material
11/07/1996WO1996034992A1 Process temperature control of a fluidized bed reactor
11/07/1996WO1996034989A1 Process for producing hydraulic binders and/or alloys, e.g. ferrochromium or ferrovanadium
11/07/1996CA2220151A1 Process temperature control of a fluidized bed reactor
10/1996
10/30/1996CN1134730A Upgrading titaniferous materials
10/30/1996CN1134472A Process for production of pure solutions of tungsten and molybdenum
10/02/1996EP0734355A1 Recovery of spent catalyst
10/02/1996EP0734354A1 Recovery of spent catalyst
10/02/1996CN1132104A Extraction of acids and metal salts from queous solutions with diethyl dodecylphosphonate
09/1996
09/19/1996WO1996028577A1 Fast quench reactor and method
09/18/1996CN1131443A Roasting of titaniferous materials
09/18/1996CN1032806C Method and device for prepn. of alkali metal chromates from chromium minerals
09/05/1996DE19607745A1 Quick, clean, simple processing of tungsten@ esp. thoriated tungsten scrap
09/05/1996DE19607356A1 Potassium-doped tungsten wire esp. for incandescent lamp filament
09/05/1996DE19607355A1 Potassium-doped tungsten wire esp. for incandescent lamp filament
09/04/1996EP0729437A1 Metal and fluorine values recovery from mineral ore treatment
08/1996
08/20/1996US5547646 Heating with oxygen in the presence of alkaline compounds
08/15/1996WO1996024699A1 Treatment of titanium-containing material
08/15/1996WO1996024555A1 PROCESSING ILMENITE ORE TO TiO2 PIGMENT
08/14/1996DE19528328A1 Method for re-mfr. of tungsten-contg. hard metals from secondary raw materials
08/07/1996CN1128546A A consumable electrode method for forming micro-alloyed products
07/1996
07/31/1996EP0642595B1 Continuous ore reaction process
07/30/1996CA1338487C Fluidized bed process for chlorinating titanium-containing material and coke useful in such process
07/11/1996WO1996020892A1 METHODS AND SYSTEMS FOR PRODUCING ULTRA HIGH PURITY TITANIUM TETRAIODIDE (TiI4) AND ULTRA HIGH PURITY TITANIUM METAL
07/10/1996EP0721017A1 Process for preparing pure solutions of tungsten and molybdenum
07/04/1996CA2166368A1 Process for the production of pure solutions of tungsten and molybdenum
07/03/1996EP0719346A1 Ilmenite processing using cold milling
07/03/1996EP0658214A4 Upgrading titaniferous materials.
07/03/1996CN1032223C Controlling oxygen content in tantalum material
07/03/1996CN1032222C Method for controlling oxygen content of tantalum material
07/02/1996US5531970 Calcium fluoride sediments, complexing, reacting with acid, separating primary values of ta and nb from secondary values of u or th, solubilizing
06/1996
06/26/1996EP0717783A1 Upgrading titaniferous materials
06/12/1996EP0417296B1 Direct smelting process
06/05/1996EP0714992A1 Method for increased yield when chlorinating titaniferous materials
05/1996
05/30/1996WO1996015987A1 Metal and fluorine values recovery from mineral ore treatment
05/30/1996CA2205482A1 Metal and fluorine values recovery from mineral ore treatment
05/29/1996EP0713537A1 A consumable electrode method for forming micro-alloyed products
05/29/1996CN1123206A Tantalum powder and electrolytic capacitor using same
05/15/1996EP0711203A1 Process and installation for recovering catalyst components
05/02/1996WO1996013039A1 Process for production of molybdenum-99 and management of waste therefrom
05/01/1996EP0709471A1 Use of diethyl dodecylphosphonate for extracting acid and metal salts from aqueous solutions
04/1996
04/27/1996CA2161180A1 Extraction of acids and metal salts from aqueous solutions with diethyl dodecylphosphonate
04/25/1996WO1996012047A1 Titanium and vanadium recovery process
04/24/1996EP0641396B1 Improved method for beneficiating titanium-bearing material containing iron
04/18/1996CA2154133A1 Process for the recovery of molybdenum from impure calcium molybdate resulting from the treatment of uraniferous ores
04/11/1996WO1996010653A1 Treatment of minerals for extraction of zirconium
04/09/1996US5505918 Controlled heating, oxidation
04/04/1996WO1996010096A1 Process and solution for extracting metal
04/04/1996DE19536013A1 Tantalum powder for electrolytic capacitor anodes
04/02/1996US5503655 Low cost titanium production
03/1996
03/14/1996WO1996007774A1 Preparation of lead-zirconium-titanium film and powder by electrodeposition
03/06/1996EP0585347B1 METHOD FOR PURIFYING TiO2 ORE
03/05/1996CA2025015C Direct smelting process
02/1996
02/29/1996DE19500057C1 Environmentally friendly prodn. of pure tungstate and molybdate soln.
02/27/1996US5494648 Process for removing thorium and recovering vanadium from titanium chlorinator waste
02/15/1996WO1996004407A1 Method of making metals and other elements
02/13/1996US5490976 Continuous ore reaction process by fluidizing
02/06/1996US5489423 Process for recovering sulfuric acid from metallic sulfate-containing exhaust sulfuric acid
01/1996
01/24/1996EP0527811B1 A process and plant for the preparation of alkaline chromates from chromium minerals
01/18/1996DE4414571C1 Tantalum@-niobium@ concentrate prepn.
01/09/1996US5482691 Process for the production of intermediates useful in the processing of ilmenite and related minerals
01/09/1996US5482690 Low-residue high-extraction production of sodium dichromate
01/02/1996CA1337847C Method for purifying tio _ore by alternating acid and base treatments
12/1995
12/27/1995EP0594622B1 Solids feed system and method for feeding fluidized beds
12/19/1995US5476248 Apparatus for producing high-purity metallic chromium
12/06/1995CN1113081A Method for reclaiming metal sulfate-containing waste sulfuric acid
12/05/1995US5473648 Decontamination process
11/1995
11/30/1995WO1995032313A1 Tantalum production and product
11/29/1995CN1112467A Preparation from metal alkoxides of high purity metal powder
10/1995
10/31/1995US5462647 Electrolysis of soluble salts of lead, zirconium and titanium in electrolyte bath
10/26/1995WO1995028503A1 Treatment of leach liquors for upgrading a titaniferous material
10/26/1995WO1995028502A1 Leaching of a titaniferous material
10/26/1995CA2187893A1 Treatment of leach liquors for upgrading a titaniferous material
10/26/1995CA2187892A1 Leaching of a titaniferous material
10/24/1995US5460642 Aerosol reduction process for metal halides
10/18/1995CN1110196A Treatment technology of leached residue for alkaline hydrolysis of chromium
10/17/1995US5458697 Highly purified metal material and sputtering target using the same
10/12/1995WO1995026809A1 Improved fluidized bed process
10/12/1995CA2185332A1 Improved fluidized bed process
09/1995
09/28/1995WO1995025824A1 Aerosol reduction process for metal halides
09/27/1995CN1109026A Method for manufacturing alkali chromates from chromium ore
09/19/1995CA1337020C Method of producing titanium through use of a reverse polarity d.c. plasma arc heating process
09/14/1995WO1995024510A1 Leaching of titaniferous materials
09/14/1995CA2185000A1 Leaching of titaniferous materials
09/06/1995EP0670376A2 Zircon treatment
08/1995
08/31/1995WO1995023238A1 Low cost titanium production
08/22/1995US5442978 Tantalum production via a reduction of K2TAF7, with diluent salt, with reducing agent provided in a fast series of slug additions
08/16/1995EP0667200A1 Preparation of high-purity metal powder from metal alkoxides
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