Description: zirconia hollow ball brick entirely hollow ball made of zirconia and high-purity fused zirconia powder by molding, high temperature sintering in the system, there is a good high-temperature strength and stability of the pore structure for ultra-high-temperature devices such as the lid parts of the insulating material, such as IF furnaces, carbon black reactor, tungsten rod furnace, molybdenum furnace. Zirconia hollow ball brick is excellent performance insulating refractory products, high temperature, the maximum safe operating temperature of 2200 ℃, acid erosion, good insulation properties, widely used in metallurgy, petrochemical, electronics, military and other industrial thermal equipment in direct contact with the flame temperature as lining material, with favorable results. Usage: non-metallic materials industry, petrochemicals, iron and steel smelting, the electronics industry.