Alumina bubble bricks are porous insulating material primarily made from alumina. It features low thermal conductivity, high refractoriness, and good compressive strength. It is widely used in insulation applications in industries such as steel, glass, ceramics, and cement. · Low Thermal Conductivity: Excellent thermal insulation properties, effectively reducing heat loss. · High Refractoriness: Suitable for high-temperature environments with good refractory performance. · High Compressive Strength: Possesses sufficient mechanical strength to withstand certain loads.
Steel Industry: Used in the insulation layers of blast furnaces and hot blast stoves.
Glass Industry: Applied in insulation areas of glass furnaces.
Ceramics Industry: Used in the insulation layers of ceramic kilns.
Cement Industry: Utilized in insulation areas of cement rotary kilns.
Item/Grade | ABB-85 | ABB-90 | ABB-99 |
Max Service Temperature, ℃ | 1680 | 1700 | 1800 |
Al2O3, % | ≥85 | ≥90 | ≥99 |
SiO2, % | ≤13 | ≤8 | ≤0.2 |
Fe2O3, % | ≤0.2 | ||
Bulk Density, g/cm³ | 1.4-1.7 | ||
Cold Crushing Strength, MPa | ≥12 | ≥10 | ≥9 |
Reheating Linear Change, % (1600℃*3h) | ±0.3 | ||
Thermal Expansion Coefficient (Room temp-1300℃) | ~7.8 | ~8.0 | ~8.6 |
Thermal Conductivity Coefficient (1800℃), W/(m·K) | ≤0.8 | ≤1.3 | ≤1.5 |
f you need other models, please send us the specifications.
Steel Industry: Used in the insulation layers of blast furnaces and hot blast stoves.
Glass Industry: Applied in insulation areas of glass furnaces.
Ceramics Industry: Used in the insulation layers of ceramic kilns.
Cement Industry: Utilized in insulation areas of cement rotary kilns.
Item/Grade | ABB-85 | ABB-90 | ABB-99 |
Max Service Temperature, ℃ | 1680 | 1700 | 1800 |
Al2O3, % | ≥85 | ≥90 | ≥99 |
SiO2, % | ≤13 | ≤8 | ≤0.2 |
Fe2O3, % | ≤0.2 | ||
Bulk Density, g/cm³ | 1.4-1.7 | ||
Cold Crushing Strength, MPa | ≥12 | ≥10 | ≥9 |
Reheating Linear Change, % (1600℃*3h) | ±0.3 | ||
Thermal Expansion Coefficient (Room temp-1300℃) | ~7.8 | ~8.0 | ~8.6 |
Thermal Conductivity Coefficient (1800℃), W/(m·K) | ≤0.8 | ≤1.3 | ≤1.5 |
f you need other models, please send us the specifications.
