Reaction kinetics of FeO containing molten slags

被引：1
|
作者：
Ito, K [1 ]
Hamano, T [1 ]
Matsuzaki, K [1 ]
机构：
[1] Waseda Univ, Dept Mat Sci, Tokyo, Japan
来源：
STEEL RESEARCH INTERNATIONAL | 2003年 / 74卷 / 01期
关键词：
steelmaking slag; reduction rate; activity; regular solution model; rate constant; dissolution of lime; diffusion control;
D O I：
10.1002/srin.200300154
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
The kinetic study of FeO-containing slag is valuable if we consider slag-gas and slag-metal reactions in steelmaking process. In the present work, the reduction rate of FetO-SiO2-TiO2-MOx (MOx = CaO, MgO, AlO1.5, PO2.5) melts in equilibrium with solid iron by CO gas was measured using the thermobalance system at 1673 K. A rate equation was developed based on the results obtained. The mechanisms of the reaction and the effect of P2O5 as a surfactant were discussed. Solid CaO was reacted with FeO-containing slag at 1573 to 1673 K. The CaO-slag interface was analyzed by SEM and EDX, and the reacted layers were identified. The rate of solid CaO dissolution into a stagnant FeO-containing slag at hot-metal temperatures was explained by the FeO diffusion in slag phase.
引用
收藏
页码：9 / +
页数：6
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