ISIJ International
Online ISSN : 1347-5460
Print ISSN : 0915-1559
ISSN-L : 0915-1559
Regular Article
Effect of TiO2 on the Liquid Zone and Apparent Viscosity of SiO2-CaO-8wt%MgO-14wt%Al2O3 System
Zhiming YanXuewei LvWenchao HeJian Xu
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2017 Volume 57 Issue 1 Pages 31-36

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Abstract

The effect of TiO2 on the liquids zone and apparent viscosity of SiO2-CaO-8wt%MgO-14wt%Al2O3 system were studied in the present work. At fixed CaO/SiO2 between 0.5 and 1.3, higher TiO2 content decrease the slag viscosity indicating that TiO2 additions up to 50 wt.% behaved as a viscosity-decrease agent by loosening the silicate network structure. The free running temperature increase at TiO2 content from 10 wt.% to 30 wt.%. At fixed TiO2 content of 20, 30 and 40 wt.%, increasing the CaO/SiO2 resulted in lower viscosity due to the depolymerization of the structure. Four different viscosity models were discussed and two of them were employed to predict the viscosity and found that the Urbain’s Model agrees well with experimental data at high viscosity (4–12 dPa·s) and the KCC’s Model agrees well with experimental data at a lower viscosity (0–4 dPa·s).

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© 2017 by The Iron and Steel Institute of Japan
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