Bubble Alumina insulation bricks are sintered mainly by high-purity alumina refractory bubble.
Bubble Alumina insulation bricks are sintered mainly by high-purity alumina refractory bubble. Their advantages include low bulk density, low thermal conductivity, excellent compression resistance, outstanding high temperature kilns, which work in a high temperature environment, such as synthetic ammonia liquefaction furnace, ethylene gas furnace, etc. Recommended service temperature: less than 1800°C.
Item | Brands | ||
PL-1.3 | PL-1.5 | PL-1.7 | |
Al2O3 , % | ≥98 | ||
Fe2O3 , % | ≤0.5 | ||
Bulk density g/cm3, | 1.3 | 1.5 | 1.7 |
Cold Crush strength (MPa) | 6.0 | 8.0 | 10.0 |
Testing temperature when reheated with 2% contracting rate (°C) | 1700*8 |
1700*8 | 1750*8 |
Thermal conductivity ,(W/m·K)(350°C±25°C) | 0.55 | 0.65 | 0.75 |
Refractory Bubble Alumina Insulation Bricks For Glass Kiln
