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Effects of SnO<sub>2</sub> Addition on the Properties of Alumina-Magnesia Refractory Castables
The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan, China
The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan, China
The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan, China
The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan, China
- 1 The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan, China
- 2 The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan, China
- 3 The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan, China
- 4 The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan, China
New Journal of Glass and Ceramics·Volume 05 (2014)·Pages 1–7·Published 17 December 2014·DOI10.4236/njgc.2015.51001
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Abstract
Alumina-magnesia refractory castables have been widely used in the wall and bottom impact pad of steel ladles. The properties of alumina-magnesia refractory castables with SnO<sub>2</sub> additive in 0 - 5 wt% range were investigated. The phase composition, microstructure, physical and mechanical properties of these refractories were studied. The results showed that the addition of SnO<sub>2</sub> could have a great influence on the properties of alumina-magnesia refractory castables. The expansion, apparent porosity and strength of refractories with SnO<sub>2</sub> were all more prominent than those of reference samples, which were attributed to the formation of CA<sub>6</sub> and enhanced bonding. Meanwhile SnO<sub>2</sub> could react with spinel and CA<sub>6</sub> to form solid solution.
KeywordsCastablesSnO<sub>2</sub>SpinelCalcium Hexaaluminate
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