Corundum mullite brick

Item Indicator Corundum mullite brick Al2O3 % ≥80≥86SiO2 % ≤14≤11Fe2O3 % <0.8<0.3Volume Density (g/cm3) ≥2.75≥2.90Apparent porosity % ≤21≤19Cold compressive strength (Mpa) ≥60≥80 Thermal expansion coefficient *10-6/°C 4.8-7.65.0-8.0 Refractoriness under load °C (0.2 Mpa,0.6%) ≥1700≥1700 Reheating linear change rate % (1600°C*2h) ±0.2(1450°C*12h)±0.2(1600°C*12h) Maximum working temperature °C 1700The product imported tabular alumina, high-purity fused corundum as the main raw materials,and the application of advanced applied technology of superfine powder,mixing and drying,forming,firingat high temperature shuttle kiln made.The material is widely used in residue gasification,ammonia, Sec conversion furnace,carbon black reactor and refractory furnaces and other equipment.Products,dimensions,physical and chemical indicators of useful life are up to customer requirements.