Zirconia hollow ball

The working temperature of zirconia and its products can reach to more than 2500°C, can remain stable in oxidation or reduction atmosphere,for some metal solution and slag, this type of product has great erosion resistance. Moreover, it has conductivity at 1000°C or more. Zirconia hollow brick was used for fire super and hard high-temperature furnace lining.this brick can be also used for other working lining of the ultra-high temperature furnace. Item Indicator Zirconiahollowball Zirconiahollow balls productsZrO2 % 9998 (+stabilizer)SiO2 % ≤ 0.2≤ 0.2Fe2O3 % ≤ 0.2≤ 0.2Volume density (g/cm3) /≤ 3.0Long-period serving temperature °C 22002200Cold compressive strength (Mpa) ≥ 8≥ 8Refractoriness under load °C (0.2Mpa,0.6%) ≥ 1700 ≥ 1700Reheating linear change rate % (1600°C*2h) ± 0.2± 0.2Thermal conductivity w/(m.k) ≤ 0.5≤ 0.5