REDUCTION RATE OF SIO2 IN SLAG BY CARBON-SATURATED IRON

被引：23

作者：

SUN, HP ^{[1
]}

MORI, K ^{[1
]}

PEHLKE, RD ^{[1
]}

机构：

[1] KYUSHU UNIV,DEPT MAT SCI & ENGN,FUKUOKA 812,JAPAN

来源：

METALLURGICAL TRANSACTIONS B-PROCESS METALLURGY | 1993年 / 24卷 / 01期

关键词：

D O I：

10.1007/BF02657877

中图分类号：

TF [冶金工业];

学科分类号：

0806 [冶金工程];

摘要：

The reduction rate of SiO2 from CaO-SiO2-Al2O3 and CaO-SiO2-Al2O3-TiO2 slags by carbon-saturated iron melts was investigated over the temperature range 1350-degrees-C to 1600-degrees-C under an argon atmosphere. It was found that the reduction rate of silicon increased with increasing temperature and decreased with increasing ratio of CaO/SiO2 in these slags. A kinetic analysis of the experimental results developed on the basis of the two film theory showed that the silicon transport rate from slag to metal phase was controlled by the rate of chemical reaction at the slag-metal interface. The rate constants obtained for the reaction were 10 g m-2 s-1 at 1550-degrees-C. The apparent activation energy was 238.0 kJ mol-1.

引用

页码：113 / 120

页数：8

共 19 条

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