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Vol.48, No.8, 765 ~ 775, 2010
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| Title |
| Oxygen Equilibrium and the Solubility of MgO in CaO-Fe(t)O-MgO-SiO2(≤5mass%)-ΣMxOy Slags and Molten Iron |
| 신동엽 Dong Yeop Shin , 이주호 Joo Ho Lee , 홍성훈 Seong Hun Hong , 유병돈 Byung Don You , 서성모 Seong Mo Seo , 박종민 Jong Min Park |
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| Abstract |
| Oxygen equilibrium and the solubility of MgO have been measured in the CaO-Fe(t)O-MgO-SiO2(≤5 mass%)-ΣMxOy slag in equilibrium with liquid iron in the temperature range of 1550 to 1700℃. The effect of oxides on the MgO solubility, and a method for calculating the solubility of MgO using slag composition and temperature, were discussed. The solubility of MgO is increased with increasing temperature and Fe(t)O content, and with decreasing basicity (C/S). The effect of ΣMxOy on the solubility of MgO is a dilution effect due to the increase in slag volume. The activity and activity coefficient of Fe(t)O decreased with increasing basicity (B). The effect of temperature on the activity was negligible. The value of ρ=Fe3+/Fe2+ increased with the increase of the slag basicity (B") and the decrease of the Fe(t)O content in the slag. |
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| Key Words |
| Oxides, melting, slag, thermodynamic |
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