90 Light Weight Corundum Bricks Al2O3 90% For Refractories High Temperature Furnaces
90 Light Weight Corundum Bricks Al2O3 90% for Refractories, Ceramic Tunnel Kiln and Other High Temperature Furnaces
90 Light Weight Corundum Bricks:
Alumina content of more than 90%, mainly to corundum refractory products. High temperature compressive strength at room temperature. High load softening start temperature.
Application:
It is mainly used for refractories, industrial ceramics and ceramic tunnel kilns, shuttle kiln, electric furnace and other high temperature furnace hot face or back up insulation lining.
| Items | 90 Light Weight Corundum Bricks | 85 Light Weight Corundum Bricks | 80 Light Weight Corundum Bricks |
|---|---|---|---|
|
AI2O3 % |
≥ 90 | ≥ 85 | ≥ 80 |
|
SiO2 % |
≤ 8 | ≤ 13 | ≤ 18 |
|
Fe2O3 % |
≤ 0.2 | ≤ 0.3 | ≤ 0.5 |
|
Bulk Density g／cm3 |
≥ 1.6 | ≥ 1.7 | ≥ 1.6 |
|
Reheating linear change % |
-0.3 | -0.3 | -0.4 |
|
Cold crushing stregth mpa |
≥ 6 | ≥ 6 | ≥ 5 |
|
Refractoriness Under Load(0.1mpa 0.6%) |
≥ 1630 | ≥ 1600 | ≥ 1580 |
|
Thermal Conductivity |
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Max. Service Temperaturem, ℃ |
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