China Rongsheng Refractory Alumina Bubble Insulation Brick, Find details about China Alumina Bubble Brick, Alumina Hollow Ball Brick from Rongsheng Refractory Alumina Bubble Insulation Brick
Item | Alumina Bubble Brick | |||
Types | Unit | 85# | 90# | 99# |
Maximum Service Temperature | ºC | 1680 | 1700 | 1800 |
Al2O3 | % | ≥85 | ≥90 | ≥99 |
SiO2 | % | ≤15 | ≤8 | ≤0.2 |
Fe2O3 | % | ≤0.2 | ≤0.2 | ≤0.2 |
Bulk Density | g/cm3 | 1.4-1.7 | 1.4-1.7 | 1.4-1.7 |
Cold Crushing Strength | MPa | ≥12 | ≥10 | ≥9 |
Refractoriness Under Load (0.1MPa, 0.6%) | ºC | ≥1650 | ≥1760 | ≥1760 |
Reheating Linear Change (1600ºC*3h) | % | ±0.3 | ±0.3 | ±0.3 |
Thermal Expansion Coefficient (Room temperature -1300ºC) | ×10-6ºC-1 | ~7.8 | ~8.0 | ~8.6 |
Thermal Conductivity (Average temperature 800ºC ) | W/(m·K) | ≤0.8 | ≤1.3 | ≤1.5 |