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Activation Energy of Alumina Dissolution in FexO Bearing Slags
Version 1
: Received: 7 September 2023 / Approved: 7 September 2023 / Online: 8 September 2023 (05:00:33 CEST)
A peer-reviewed article of this Preprint also exists.
Kwack, T.; Um, H.; Chung, Y. Activation Energy of Alumina Dissolution in FeO-Bearing Slags. Metals 2023, 13, 1702. Kwack, T.; Um, H.; Chung, Y. Activation Energy of Alumina Dissolution in FeO-Bearing Slags. Metals 2023, 13, 1702.
Abstract
The dissolution of Al2O3 non-metallic inclusions from slag containing FexO was investigated in this study. The slag system used in the experiments was a quaternary system of CaO-SiO2-Al2O3-FexO. The composition of the slag was studied by fixing the basicity (CaO/SiO2 ratio) to 1 and varying the FexO content to 10 and 20wt%. In addition, the experimental temperature was varied as 1550℃, 1575℃, and 1600℃ to study the effect of temperature on the Al2O3 dissolution behavior. The experimental equipment is a single hot thermocouple apparatus. The dissolution rate of Al2O3 particles increased linearly with increasing temperature and FexO content. In addition, the mass transfer activation energy of Al2O3 dissolution in FexO 10wt% and FexO 20wt% was calculated by an Arrhenius type analysis. The obtained mass transfer activation energies were 159 and 189 kJ/mole, respectively.
Keywords
non-metallic inclusions; Al2O3 dissolution; activation energy; refining
Subject
Engineering, Metallurgy and Metallurgical Engineering
Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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