4. Niobium and tantalum production
4.1 Niobium and niobium alloys
Niobium pentoxide is the raw material for the production of niobium metal.
It is derived from the tantalum/niobium separation process used by the American company Cabot and the German company H.C. Starck, by chlorination or nitridation of ferroniobium by the American company Allegheny Technologies, or by chemical attack of pyrochlore since 1989 by the Brazilian company CBMM (see §
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Niobium and tantalum production
Bibliography
References
Websites
Tantalum
http://www.webelements.com/tantalum/
http://webmineral.com/chem/Chem-Ta.shtml
Niobium
Directory
Ferroniobium suppliers
Cambior (Niobec) http://www.cambior.com/
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