Soar burned slide gate plate is burned at medium temperature or high temperature. It has the characteristics of high strength, corrosion resistance, good thermal shock stability and good volume stability. It is the preferred material for large and medium-sized ladles. Soar burned slide gate plates are divided into Al₂O₃-C-based, Al₂O₃-ZrO₃-C-based, MgO-spinel-based ones, to meet the requirements of different steel grades.