Chlorination of Nb-Bearing Slag from Baotou Hot Metal and Mechanism on Its Demanganification

作     者：Tan, Zanlin Wei, Shoukun Zhu, Yuankai 

作者机构：Univ of Science and Technology China 

出 版 物：《Rare Metals》 (稀有金属（英文版）)

年 卷 期：1989年第9卷第1期

页      面：1-8页

核心收录：

学科分类：0806[工学-冶金工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0703[理学-化学] 0702[理学-物理学] 

主　　题：Slags Chlorination 

摘      要：Nb-bearing slag from Baotou blast furnace 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 the addition of flux, ferroniobium with about 60% Nb was made. A kinetic study of chlorination of synthetic MnO-Nb2O5-SiO2 and FeO-Nb2O5-SiO2 slag systems was conducted. A non-reacting core model for demanganification with free use of activity was formulated, and the rate-controlling step is explained.