Chemistry of inorganic compounds – Treating mixture to obtain metal containing compound – Group vb metal
Patent
1992-04-02
1993-02-23
Lewis, Michael
Chemistry of inorganic compounds
Treating mixture to obtain metal containing compound
Group vb metal
423138, 423325, 423439, 423440, 423592, 423644, C01G 3300, C01G 3100, C01G 3500, C01B 33113
Patent
active
051888106
ABSTRACT:
A process for preparing metal oxides from ferrometal and nickel metal alloys is disclosed comprising first providing a ferrometal or nickel metal alloy containing an oxide forming metal, hydriding the alloy to an effective temperature and pressure with hydrogen containing gas, subdividing then carbiding the hydrided product at a temperature above about 500.degree. C. to form carbides, then employing an aqueous acid leach to dissolve the iron or nickel carbide and separating the acid soluble from the acid insoluble carbides. The acid insoluble carbides are reacted with oxygen at an elevated temperature for a time sufficient to form the metal oxides of said carbides.
REFERENCES:
patent: 2164198 (1939-06-01), Clements et al.
patent: 2474021 (1949-06-01), Vining
patent: 2553444 (1951-05-01), Dunn et al.
patent: 2682445 (1954-06-01), Basel
patent: 2849275 (1958-08-01), Bleecker
patent: 2886616 (1959-05-01), Mertz et al.
patent: 3053620 (1962-09-01), Greenberg et al.
patent: 3230077 (1966-01-01), Hiller
patent: 3300297 (1967-01-01), Fields
patent: 3322510 (1967-05-01), Anselin et al.
patent: 3356513 (1967-12-01), Washburn
patent: 3425826 (1969-02-01), Schmidt et al.
patent: 3461190 (1969-08-01), Kemeny
patent: 3539165 (1970-11-01), Ingels
patent: 3573000 (1971-03-01), Toomey et al.
patent: 3639101 (1972-02-01), Washburn
patent: 3854882 (1974-12-01), Washburn
patent: 3999981 (1976-12-01), Brandstatter
patent: 4029740 (1977-06-01), Ervin, Jr.
patent: 4211754 (1980-07-01), Van Hecke et al.
patent: 4318897 (1982-03-01), Gonczy
patent: 4425318 (1984-01-01), Maeland et al.
patent: 4440737 (1984-04-01), Libowitz et al.
patent: 4607826 (1986-08-01), Ron
patent: 4720300 (1988-01-01), Nishizawa et al.
patent: 4727928 (1988-03-01), De Vynck et al.
patent: 4728507 (1988-03-01), Worcester
patent: 4741894 (1988-05-01), Melas
patent: 4812301 (1989-03-01), Davidson et al.
patent: 4913778 (1990-04-01), Lee et al.
Mellor, "A Comprehensive Treatise on Inorganic Chemistry", vol. VIII, Longmans, Green & Co., 1947, pp. 124-126.
Hattangadi, "How to Set a Periodic Table", Industrial Chemist, vol. 9, No. 5, 1988, pp. 20-23.
Hart, The Reduction of Columbic Acid and the Measurement of the Oxidation Potential of the Pentavalent-Trivalent Columbium System, 226-7, 1926.
Sherwood, Columbium, Rare Metals Handbook, pp. 149-177.
McClain et al., Zirconium-Hafnium Separation, Chapter 4, pp. 64-73, 1960.
Kroll et al., Pilot Plants, Production of Malleable Zirconium, vol. 42, No. 2, pp. 395-396, 1950.
Fairgrieve et al., Hafnium, Molybdenum Techniques Revealed, Journal of Metals, pp. 25-26, 1960.
Spink, Fused-Salt Scrubbing of Zirconium Tetrachloride, Transactions Aime, vol. 224, pp. 965-970, 1962.
Fairbrother, The Chemistry of Niobium and Tantalum, pp. 4, 5, 8-19, 1967.
de Hoboken, Production of Tantalum and/or Columbium, pp. 1-6.
Pennington, Derivatives of Columbium and Tantalum, 1985.
Duke, Resources and Planning Advisory Council, vol. VIII, pp. 1-51, 1969.
Stuart, Niobium, Proceedings of the International Symposium, pp. 3-16; 1237-1249, 1981.
Gibalo, Analytical Chemistry of Niobium and Tantalum, pp. 118-140, 1970.
Merrill, The Separation of Columbium and Tantalum by Means of Selenium Oxychloride, pp. 2378-2383, 1921.
Kalinchak Stephen G.
Lewis Michael
Teledyne Industries Inc.
LandOfFree
Process for making niobium oxide does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Process for making niobium oxide, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for making niobium oxide will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2203039