Title: Determination of CaO-SiO2-MgO-Al2O3-CrOx liquidus
Authors: Arnout, Sander ×
Durinck, Dirk
Guo, Muxing
Blanpain, Bart
Wollants, Patrick #
Issue Date: Apr-2008
Publisher: Blackwell publishing
Series Title: Journal of the american ceramic society vol:91 issue:4 pages:1237-1243
Abstract: In this work, the liquidus of synthetic CaO-SiO2-MgO-Al2O3-CrOx slags is evaluated in the industrially relevant compositional domain. Equilibrium experiments are carried out at 1500 degrees C and partial oxygen pressure (p(O2)) 10^(-11.04) atm, and at 1600 degrees C and p(O2)=10^(-10.16) and 10(-9.36) atm. The studied basicities (CaO/SiO2) are 1.2 and 0.5. Al2O3 levels range from 0 to 30 wt%. Oversaturated liquid is sampled and phase relations are measured with quantitative electron probe microanalysis-wavelength dispersive spectroscopy (EPMA-WDS). The results are compared with the commercially available FactSage thermodynamic databases. Qualitative agreement is always obtained. Also a good quantitative agreement is found at the higher basicity, especially for the spinel liquidus. A minor but systematic deviation can be observed for the eskolaite liquidus. At the lower basicity, the calculated phase diagram deviates strongly from the experimental results, probably due to missing ternary interactions in the database.
ISSN: 0002-7820
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Department of Materials Engineering - miscellaneous
Chemical and Extractive Metallurgy Section (-)
× corresponding author
# (joint) last author

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