Refractory zircon mullite brick

zircon mullite bricks are made of alpha alumina, stablized zirconium, crushed AZS aggregates,etc.. after fully mixing,pressing/viberating, drying and firing in high temperature shuttle kilns. These products have very compact microstructure, high bulk/volume density, high mechanical strength under high temperature, excellent thermal shock resistance, low reheating contract and creeping rate, excellent chemical stability against alkaliattack. typical properties Itemsdense zircon brickregular zircon bricksintered AZS brickzircon mullite bricksemi-zircon brickZrO2 %≥65≥60≥30≥18≥15—20Al2O3 %——≥45≥55≥50—60SiO2 %—≤38≤25≤25≤20Fe2O3 %≤0.3≤0.5≤0.5≤0.5≤1.2A.P.%≤18≤22≤20≤17≤20B.D. g/cm3≥3.7≥3.5≥3.2≥2.7≥2.7C.C.S. MPa≥100≥100≥100≥100≥100R.U.L °C≥1650≥1620≥1650≥1650≥1550(0.2MPa,0.6%)