Recovery of niobium metal

Specialized metallurgical processes – compositions for use therei – Processes – Producing or treating free metal

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

75 1043, 75622, C01G 3300

Patent

active

053225481

ABSTRACT:
Ferroniobium, ferrotantalum and ferrovanadium alloys are hydrogenated to facilitate crushing then nitrided, and then acid-leached to produce a soluble iron nitride leachate and a niobium, tantalum or vanadium nitride residue which residue can be denitrided to yield the metal which can be recovered by melting.

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), Frey
patent: 2849275 (1958-08-01), Bleecker
patent: 2886616 (1959-05-01), Mertz et al.
patent: 2992094 (1961-07-01), Powell
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
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 Columbian 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.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Recovery of niobium metal does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Recovery of niobium metal, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Recovery of niobium metal will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-2218430

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.