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Product introduction of high alumina insulating brick
High alumina insulating brick is also known as light alumina insulating brick. It is a new type of lightweight insulating material containing about 48% alumina, mullite and glass phase or corundum. This utility model has the advantages of high strength, good thermal stability, small change of refired fiber, small thermal conductivity and remarkable energy-saving effect, etc. It is widely used in metallurgy, machinery, ceramics, chemical industry, etc.
Advantages of high alumina insulating brick
High alumina insulation brick has high-temperature strength, resistance to various atmospheric corrosion, excellent thermal shock stability, good insulation performance and remarkable energy-saving effect.
Features of high alumina insulating brick
- High porosity.
- Small bulk density.
- Good insulation effect.
- High mechanical strength.
- Small thermal conductivity.
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 |