Sintered bauxite-based magnesia-alumina spinel chooses the high-quality bauxite and high-grade light burned magnesia. It’s sintered in high-temperature after complicated homogenized processes. With the features of good erosion, abrasion, slagging resistance,perfect thermal shock resistance and high heat-resistance, it is the optimal material in producing magnesia-alumina spinel brick , ladle brick , ladle castable, etc.