High alumina insulation brick is also known as lightweight alumina insulating brick. It is a new type of lightweight insulating material that contains approximately 48% alumina, mullite, and glass phase or corundum.
Performance Characters:
1. high porosity.
2. small volume density.
3. good insulation effect.
4. high mechanical intensity.
5. small thermal conductivity.
Application:
It is used for the construction of furnace lining and insulating layer, and the parts without erosion or scouring action of intense high-temperature melting material. The surface contact temperature shouldn't be higher than 1350℃ when it is exposed to flame directly.
| 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 |
