Bubble Alumina Refractory Insulation Brick
Product Description
Bubble Alumina and Bubble Zirconia Bricks
item | Bubble AL2O3 Brick | Bubble ZrO2 brick | ||
| BA-85 | BA-90 | BA-99 | BZ-98 | |
| ºC Max service temperature | 1680 | 1700 | 1800 | 2200 |
| AL2O3 % ≥ | 85 | ≥90 | ≥99 | - |
| ZrO2 % | - | - | - | ≥98()with stabilizer |
| SiO2 % ≤ | 13 | ≤8 | ≤0.2 | ≤0.2 |
| Fe2O3 % ≤ | ≤0.2 | ≤0.2 | ≤0.2 | ≤0.2 |
| Bulk density g/cm3 | 1.4-1.7 | 1.4-1.7 | 1.4-1.7 | ≤3.0 |
| MPa ≥ Cold crushing strength | 12 | ≥10 | ≥9 | ≥8 |
| ºC ≥ (0.1MPa,0.6%) Refractoriness under load | 1650 | ≥1700 | ≥1700 | ≥1700 |
| % (1600ºC×3h) Reheating linear change rate | ±0.3 | ±0.3 | ±0.3 | ±0.2 |
| ×10-6 (room temp - 1300ºC) Thermal expansion coefficient | ~7.8 | ~8.0 | ~8.6 | ~9.1 |
| w/(m.k) (Average 800ºC) Thermal conductivity ≤ | 0.8 | ≤1.3 | ≤1.5 | ≤0.3 |
Application | ,,,,. Primarily used for lining of high temperature furnace and thermic insulant of ultra-high temperature furnace of the industrial as refractory material, industrial ceramics, electronice ceramics, petrochemical and metallurgical industries. | |||