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Product introduction of high alumina insulation bricks
High alumina insulation brick with alumina content of more than 48%, mainly composed of mullite and glass phase or corundum light refractory. Volume density 0.4 ~ 1.35g/cm3. The porosity is 66%-73%, and the compressive strength is 1-8mpa. Good thermal shock resistance.
Features of high alumina insulation bricks
High alumina insulation brick has the characteristics of high temperature strength, corrosion resistance to various atmospheres, excellent thermal shock stability, good heat insulation performance, energy saving effect and so on.
Parameters of high alumina insulation bricks
| 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 |
More relevant refractory products: Magnesia carbon brick