AZS brick

AZS brick, which is arranged according to the three chemical components of the phase diagram of the Al₂O₃-ZrO2-SiO₂ ternary system, according to the order of their content, Al₂O₃ takes A, ZrO₂ takes Z, SiO₂ Take S, the JC/T industry standard adopts this abbreviation, for example, No. 33 fused cast zirconium corundum brick is abbreviated as AZS-33#, and the rest are analogous.

The AZS fused cast brick manufacturing process mixes selected zircon sand and industrial alumina powder in a ratio of 1:1, plus a small amount of Na₂O (added in the form of sodium carbonate), B₂O₃ (added in the form of boric acid or borax) flux, and mixed evenly , After being melted at 1800~1900 ℃, it can be cast and formed, and the fused cast brick containing ZrO₂ 33% can be obtained. On this basis, using partially desiliconized zircon sand as raw material, fused cast bricks containing ZrO2 of 36% to 41% can be obtained. Zirconia-corundum refraetory brick uses industrial alumina powder and selected zircon sand as raw materials to make refractory products with ZrO₂ content of 33%~45%. Lead corundum bricks are mainly used in glass industry pool kilns.