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Metallurgical and Materials Transactions B
Published in: Metallurgical and Materials Transactions B 6/2014

01-12-2014

The Dissolution Kinetics of Al2O3 into Molten CaO-Al2O3-Fe2O3 Slag

Authors: Shenglin Xiang, Xuewei Lv, Bin Yu, Jian Xu, Jiaqing Yin

Published in: Metallurgical and Materials Transactions B | Issue 6/2014

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Abstract

The rotation cylinder method was used to investigate the dissolution kinetics of Al2O3 into molten CaO-Al2O3-Fe2O3 slag, and weight losses of the Al2O3 rod were selected as experimental variables. The final melt was milled into powders for XRF detection, and the Al2O3 rod with adhesive melt after experimental was examined by scanning electron microscopy and energy dispersive spectrometer. It is concluded that diffusion is the restricted step in Al2O3 dissolution into molten CaO-Al2O3-Fe2O3 slag; the chemical composition of the initial melts exerts a great influence on the activation energy for Al2O3 dissolution; the range of Al2O3 diffusivity is about 1.86 × 10−7 to 2.45 × 10−6 cm2/s; no apparent intermediate layer between the Al2O3 rod and melt is observed.
previous article Fundamentals of Silico-Ferrite of Calcium and Aluminum (SFCA) and SFCA-I Iron Ore Sinter Bonding Phase Formation: Effects of CaO:SiO2 Ratio
next article Prediction Model of Sulfide Capacity for CaO-FeO-Fe2O3-Al2O3-P2O5 Slags in a Large Variation Range of Oxygen Potential Based on the Ion and Molecule Coexistence Theory

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Metadata
Title
The Dissolution Kinetics of Al2O3 into Molten CaO-Al2O3-Fe2O3 Slag
Authors
Shenglin Xiang
Xuewei Lv
Bin Yu
Jian Xu
Jiaqing Yin
Publication date
01-12-2014
Publisher
Springer US
Published in
Metallurgical and Materials Transactions B / Issue 6/2014
Print ISSN: 1073-5615
Electronic ISSN: 1543-1916
DOI
https://doi.org/10.1007/s11663-014-0159-z

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