Calculation of Activities of the Constituents in FetO-(CaO+MgO)-(SiO2+P2O5) Slags by Regular Solution Model
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Open Access
- 1 January 1987
- journal article
- Published by Iron and Steel Institute of Japan in Tetsu-to-Hagane
- Vol. 73 (3) , 476-483
Abstract
Calculation of Activities of the Constituents in Fet0-(Ca0 + Mg0)-(Si02+ P205) Slags by Regular Solution Model Shiro BAN-YA and Mitsutaka HINO Synopsis: The chemical equilibria of gas-slag-metal reactions have been discussed to clarify the applicability of LUMSDEN'S regular solution model to oxygen distribution in steelmaking process. The slage studied are FeO-CaO, Fe,0-CaO-Si02 , Fet0-Mg0-SiO2 , Fet0-(Ca0 + MgO)-Si02 and FeO-(CaO + MgO)-P205 systems. The influence of slag composition on the activity of iron oxide and the Fe3+; Fe2-f ratio has been discussed. It has been confirmed that the regular solution model is satisfied over wide composition range' in above-mentioned steelmaking slags except for Si02 saturation and FeO rich region. In has been possible by the use of the model to calculate activities of the constituents in Fe,0-(Ca0 + Mg0)-(Si02 P205), iso-activity lines for each component in FetO-Ca0-Si02 slags and contours of ctF,in Fe,0-MgO-Si02 slags.Keywords
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