Chlorination of Nb-Bearing Slag from Baotou Hot Metal and Mechanism on Its Demanganification
来源期刊：Rare Metals1989年第1期
论文作者：Tan Zanlin;Wei Shoukun;Zhu Yuankai Department of Physical Chemistry of Process Metallurgy,University of Science and Technology Beijing Formerly Beijing University of Iron and Steel Technology
文章页码：1 - 8
摘 要：<正> Nb-bearing slag from Baotou hot metal was chlorinated in the solid state with molten CaCl2 under vacuum,96～98% MnO or FeO being thus volatilized.By reducing the chloridized residue under addition of flux,ferroniobium withabout 60% Nb was successfully made.Kinetic study of chlorination of synthetic MnO-Nb2O5-SiO2 andFeO-Nb2O5-SiO2 slag systems was conducted,and a non-reacting core model for the demanganification with free useof activity was formulated and the rate-controlling step was explained.
Tan Zanlin;Wei Shoukun;Zhu Yuankai Department of Physical Chemistry of Process Metallurgy,University of Science and Technology Beijing Formerly Beijing University of Iron and Steel Technology
摘 要：<正> Nb-bearing slag from Baotou hot metal was chlorinated in the solid state with molten CaCl2 under vacuum,96～98% MnO or FeO being thus volatilized.By reducing the chloridized residue under addition of flux,ferroniobium withabout 60% Nb was successfully made.Kinetic study of chlorination of synthetic MnO-Nb2O5-SiO2 andFeO-Nb2O5-SiO2 slag systems was conducted,and a non-reacting core model for the demanganification with free useof activity was formulated and the rate-controlling step was explained.
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