Bubble Zirconia Brick

Bubble zirconia bricks are made by stabilized fused zirconia under high temperature. The products have many advantages, such as high temperature restistance, high strength, good thermal insulation, various acid-baseerosion resistance and better thermal shock resistance. ZrO2 % ≥ 95 CaO % ≤ 4 Fe2O3 % ≤ 0.2 Bulk density: ≥ 2.25 g/cm3 Apparent porosity: ≥ 45 % Cold crushing strength: ≥ 12 Mpa Max service temperature: ≥ 2200 °C Application: middle frenquency furnace of tungsten and molybdenum, super high temperature kilns ofrefining of high-melting point metals, laser crystals, quartz glass industry.