以方镁石为主晶相镁铝尖晶石为基质的碱性耐火制品。产品具有较高的抗热震性能、高温机械强度 高，高温下体积稳定等特点 。产品广泛应用于冶金 、有色 、建材、化工、等工业窑炉。 　　 It`s made from periclasite and magnesite alumi-nium spinel with alkaline refractory pr oducts as raw material . It`s characteristic of thermal shock resist-ance,high temperature machinery and strength,bulk stability under high temperature etc.It`s mainly used in indus trial kiln(furnace) of metallurgy,non-ferrous,buildings and materials , chemical and engin eering etc.