Manganese and Chromium Distribution between CaO-SiO_2-MgO_<sat.>-CrO_<1.5>-MnO Slags and Fe-Cr-Mn Stainless Steel
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概要
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The Mn and Cr equilibria between a Mn rich stainless steelmaking slag (CaO–SiO2–MgOsat.–MnO–CrO1.5) and Fe–Cr–Mn stainless steel were investigated in a temperature range from 1823 to 1873 K under Ar atmosphere. The partition ratios LMn and LCr between liquid slag and steel were determined as a function of slag composition and temperature. By combining the experimental results with thermodynamic calculations, it was found that, as basicity increases, LMn decreases, while LCr increases. The elevated basicity leads to a high MnO activity coefficient. On the other hand, the CrO1.5 activity coefficient decreases with higher slag basicities. The influence of MnO and CrO1.5 contents on the activity coefficients was also considered. It is concluded that in order to maximize Mn recovery during high Mn stainless steel production, a basic slag with a high MnO activity coefficient must be employed whereas high temperatures should be avoided.
- 社団法人 日本鉄鋼協会の論文
- 2008-10-15
著者
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Blanpain B
Department Of Metallurgy And Materials Engineering K. U. Leuven
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GUO Muxing
Department of Materials Engineering, The University of Tokyo
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Jones Peter
Department Of Biochemistry And Molecular Biology Usc/norris Comprehensive Cancer Center University O
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Blanpain Bart
Department Of Metallurgy And Materials Engineering K. U. Leuven
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Guo Muxing
Department Of Materials Engineering The University Of Tokyo
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Wollants P
Department Of Metallurgy And Materials Engineering K. U. Leuven
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Wollants Patrick
Dept. Of Metallurgy And Materials Engineering Katholieke Universiteit Leuven
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VAN ENDE
Department of Metallurgy and Materials Engineering, Katholieke Universiteit Leuven
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WOLLANTS Patrick
Department of Metallurgy and Materials Engineering, Katholieke Universiteit Leuven
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Guo Muxing
Department Of Metallurgy And Materials Engineering Katholieke Universiteit Leuven
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Jones Peter
Department Of Metallurgy And Materials Engineering Katholieke Universiteit Leuven
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Van Ende
Department Of Metallurgy And Materials Engineering Katholieke Universiteit Leuven
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Wollants Patrick
Department Of Metallurgy And Materials Engineering Katholieke Universiteit Leuven
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