METHOD FOR PRODUCTION OF NIOBIUM FROM NIOBIUM OXIDE Russian patent published in 2004 - IPC

Abstract RU 2241774 C1

FIELD: pyrometallurgy, in particular production of niobium.

SUBSTANCE: claimed method includes: forming of liquid-phase reaction zone in furnace, providing of ore-smelting condition, feeding to reaction zone of batch containing of niobium oxide and iron oxide; and carbon-based reducing agent; reducing fusion of batch; and removing of obtained product from reaction zone. Reaction zone or furnace is formed based on melt of calcium fluoride; smelting is carried out at 1500-17000C; recrement from cladding of aluminum electrolytic cells is used as reducing agent. Method is useful for producing of Ferro niobium.

EFFECT: niobium producing in form of niobium-iron-based alloy directly from concentrate at relatively low temperature and high yield.

2 cl, 1 ex

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RU 2 241 774 C1

Authors

Digonskij S.V.

Dubinin N.A.

Kuz'Min B.M.

Ten V.V.

Dates

2004-12-10Published

2003-12-23Filed