Zirconium electro corundum is a type of fused alumina-zirconia composite abrasive that adds zirconium materials( such as zircon sand or desilication zirconium) in the fusing process. The zirconia content of zirconia corundum is 25-40%. According to the different ZrO2 content, zirconia corundum is divided into AZ25 and AZ40. The wear resistance of zirconia corundum is dozens of times higher than that of corundum melted from single alumina or bauxite alumina. It is an abrasive material with high toughness and wear resistance.