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Product introduction of high alumina insulating brick
More than 48% of the light refractory materials of high alumina insulating bricks are mainly composed of mullite and glass phase or corundum. The bulk density is 0.4 ～ 1.35g/cm3, the porosity is 66% ～ 73%, and the pressure resistance is 1 ～ 8MPa. Better thermal shock resistance.
Features of high alumina insulating brick
Low heat capacity
Low shrinkage rate
High insulation
High fire resistance
Low volume density
Low thermal conductivity
High strength, corrosion resistance
Parameters of high alumina insulation brick
| Item | LG-1.0 | LG-0.9 | LG-0.8 | LG-0.7 | LG-0.6 |
| Al2O3 | ≥48 | ≥48 | ≥48 | ≥48 | ≥48 |
| Fe2O3 | ≤2.0 | ≤2.0 | ≤2.0 | ≤2.0 | ≤2.0 |
| Bulk Density (g/cm3) | ≤1 | ≤0.9 | ≤0.8 | ≤0.7 | ≤0.6 |
| Cold Crushing strength (Mpa) | ≥3.92 | ≥3.43 | ≥2.94 | ≥2.45 | ≥1.96 |
| Thermal Conductivity Coefficient (W/mk) | ≤0.45 | ≤0.45 | ≤0.35 | ≤0.35 | ≤0.3 |
| Permanent Linear Change Rate (max 2%) (℃) | 1400 | 1400 | 1400 | 1350 | 1350 |