Phase formation and the kinetics of metal reduction during the interaction of columbite, tantalite, and wodginite with carbon.

Autor: Chumarev, V., Mar’evich, V., Mansurova, A., Kozhakhmetov, S.
Zdroj: Russian Metallurgy (Metally); Apr2008, Vol. 2008 Issue 2, p99-103, 5p
Abstrakt: The phase formation and kinetics of metal reduction upon the interaction of natural iron-manganese tantalum niobates with carbon is studied using X-ray diffraction analysis, electron probe microanalysis, and thermogravimetry. The reducibility of the minerals increases in the series wodginite-tantalite-columbite. Reduction occurs in stages with the formation of niobium tapiolite and disordered tantalite and wodginite as intermediate phases. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index
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