%0 Journal Article %T Effects of SnO<sub>2</sub> Addition on the Properties of Alumina-Magnesia Refractory Castables %A Wenjie Yuan %A Qingyou Zhu %A Chengji Deng %A Hongxi Zhu %J New Journal of Glass and Ceramics %P 1-7 %@ 2161-7562 %D 2015 %I Scientific Research Publishing %R 10.4236/njgc.2015.51001 %X 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. %K Castables %K SnO< %K sub> %K 2< %K /sub> %K Spinel %K Calcium Hexaaluminate %U http://www.scirp.org/journal/PaperInformation.aspx?PaperID=52347