Alumina based Sintered Magnesium aluminium Spinel is made from high-quality alumina and high-quality magnesium oxide, adopting a unique technique and sintering at high temperature above 1900 °C. It has the characteristics of strong corrosion resistance, good slag resistance, high thermal vibration stability and high temperature resistance. Compared with the current market products, it has higher strength and bulk density, lower porosity and water absorption, so it has better high temperature performance.