2Bradt R C. Mg-A1 spinel : Is it the mullite of the 21^st century? [ J ]. Refract Appl News ,2004,9 (4) :8 -10.
3Yuan W J, Zhu Q Y, Deng C J, et al. Effects of SnO2 addition on the properties of alumina-magnesia refractory castables[ J]. New J Glass Ceram,2015 (5) :1 -7.
4Jedynak L, Wojsa J, Podworny J, et al. Refractories from the MgO- Al2O3-SnO2 system for metallurgical applications [ J]. Ceram Mater, 2011,63(1) :34 -39.