Bulk Density:≤1.2 g/cm3
Cold Crushing Strength:≥4.5 MPa
Linear Change on Reheating，（5h,≤2%）:≥1400 ℃
Cold Crushing Strength:≥4.5 MPa
Linear Change on Reheating，（5h,≤2%）:≥1400 ℃
Thermal conductivity（350±25）℃:≤0.55 W/m·K
Bulk Density:≤≤1.2 g/cm3
Cold Crushing Strength:≥4.5 MPa
Linear Change on Reheating，（5h,≤2%）:≥1400 ℃
Raw material:Fireclay
Color:Ivery white
Al2O3:≥35%
Raw material:High alumina
Color:Yellow
Al2O3:≥30%
Raw material:mullite
Color:White
Al2O3:≥50%
Raw material:mullite
Al2O3:≥50%
Bulk density:≤1.0g/cm3
