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Erschienen in:
01.02.2013 | Communication
Activity Coefficient of SiO2 in SiO2-Al2O3-CaO Slags with Low SiO2-Content at 1873 K (1600 °C)
Erschienen in: Metallurgical and Materials Transactions B | Ausgabe 1/2013
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Abstract
The activity coefficient of SiO2 in SiO2-Al2O3-CaO slags with limited Al2O3 content was measured by equilibrating Fe-C-Si melt and slags at 1873 K (1600 °C). When the Al2O3 content was between 48 and 54 wt pct, the results show that \( \gamma_{{{\text{SiO}}_{ 2} }} \) rapidly decreases as the amount of SiO2 in the slag decreases. The equilibrium amounts of Si and Al in a Fe melt in equilibrium with SiO2-Al2O3-CaO slags were calculated based on the result of this study.