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A Review of the Extractive Metallurgy of Niobium
BS>The preparation of niobium was attempted by a number of chemical and electrochemical routes. Chemical reduction of oxides and halides such as Nb/sub 2/O/sub 5/, K/sub 2/NbOF/sub 5/, K/sub 2/NbF/sub 7/, and NbCl/sub 5/ was conducted with varying degrees of success. Aqueous electrochemical reduction has not yet yielded a metallic deposit. The electrolysis of molten baths containing K/sub 2/NbOF/sub 5/ or K/sub 2/NbF/sub 7/ produced niobium metal. The more promising methods of preparation for Nb metal at the present time include the reaction of Nb/sub 2/O/sub 5/ with C, the H/sub 2/ and active metal reduction of NbC1/sub 5/, and electrolysis of K/sub 2/NbF/sub 7/- NaC1 melts. (auth)
Date:
January 1, 1950
Creator:
Sibert, M. E.; Kolk, A. J., Jr. & Steinberg, M. A.
System:
The UNT Digital Library
Brookhaven National Laboratory, Annual Report, as of July 1, 1950. (Highlights)
None
Date:
July 1, 1950
Creator:
Laboratory, Brookhaven National
System:
The UNT Digital Library