TY - JOUR
T1 - MgO Solubility in Steelmaking Slags
AU - Tayeb, Mohammed A.
AU - Assis, Andre N.
AU - Sridhar, Seetharaman
AU - Fruehan, Richard J.
N1 - Funding Information:
The authors would like to thank industrial members of Center of Iron and Steelmaking Research (CISR) at Carnegie Mellon University for funding this project. The authors, in addition, would like to thank Dr. Eugene Pretorius for the valuable discussion.
Publisher Copyright:
© 2015, The Minerals, Metals & Materials Society and ASM International.
PY - 2015/6/26
Y1 - 2015/6/26
N2 - A predominantly liquid and MgO-saturated slag is preferred in EAF and BOF steelmaking. Fully liquid slag provides a better environment for faster mass transfer due to lower bulk viscosities and larger liquid slag volume and these help dephosphorization and desulfurization. Also, an MgO-saturated slag would be preferable in order to increase the lifetime of furnace refractory lining by reducing the extent of dissolution. This article will demonstrate the factors that would influence MgO saturation, which includes FeO, CaO, P2O5, and Al2O3 contents and temperature. In addition, this paper comments on the applicability and accuracy of FactSage prediction, which are compared to laboratory experiments. The results indicate that FactSage may underestimate MgO solubility by up to 2.5 wt pct at higher basicities while there is reasonable agreement with current measurements at lower basicities.
AB - A predominantly liquid and MgO-saturated slag is preferred in EAF and BOF steelmaking. Fully liquid slag provides a better environment for faster mass transfer due to lower bulk viscosities and larger liquid slag volume and these help dephosphorization and desulfurization. Also, an MgO-saturated slag would be preferable in order to increase the lifetime of furnace refractory lining by reducing the extent of dissolution. This article will demonstrate the factors that would influence MgO saturation, which includes FeO, CaO, P2O5, and Al2O3 contents and temperature. In addition, this paper comments on the applicability and accuracy of FactSage prediction, which are compared to laboratory experiments. The results indicate that FactSage may underestimate MgO solubility by up to 2.5 wt pct at higher basicities while there is reasonable agreement with current measurements at lower basicities.
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U2 - 10.1007/s11663-015-0352-8
DO - 10.1007/s11663-015-0352-8
M3 - Article
AN - SCOPUS:84929703728
SN - 1073-5615
VL - 46
SP - 1112
EP - 1114
JO - Metallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science
JF - Metallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science
IS - 3
M1 - 352
ER -