X.M. Yang
,
D.B. Huang
,
L. T. Kong
,
T.J. Yang
,
Y.S. Xie and D. G. Wang(Institute of Chemical Metallurgy
,
Chinese Academy of Sciences
,
Beijing 100080
,
China)(University of Science and Technology Beijing
,
Beijing 100083
,
China)
金属学报(英文版)
The rate of reducing Fet O in CaO-SiO2-Al2O3-Fet O slags with carbon saturated in molten iron has been determined in a graphite crucible in the temperature range of 1673-1773K. The effects of temperature, slag basicity and FetO content on the reduction rate have also been discussed. Test results show that the reduction rate increases with increasing temperature or FEtO concentration in slags, and the reduction rate has a parabolic relation with the simple basicity or optical basicity of slag, the maximum reduction rate being observed at around CaO/SiO2=1.5 of molten slags. The reduction reaction order is 1. 73 or 1.80, and the reduction activation energy is 299.9 or 295.9 kJ/mol in regard to Fet O weight content or Fet O activity calculated by using regular solution model, respectively. The reduction rate of CaO-SiO2-Al2 O3-Fet O slags with carbon saturated in molten iron is in the range of 0.32-3.48 mol-O/cm2·s.
关键词:
CaO-SiO_2-Al_2O_3-Fe_tO slags
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