Fire Proof / Insulating Alumina Refractory Bricks , Alumina Bubble Bricks 99% Al2O3
High Purity Alumina Bubble Lightweight Fire Brick For Chemical Industry Furnace
Alumina Bubble Brick Description:
The alumina bubble brick used the alumina hollow ball as the main raw material, high-performance powder as additives, and organic material from the temporary binding agent .After mixing, drying, forming, and firing at high temperature shuttle kiln made.
Alumina Bubble Brick Specifications
1.High purity;
2.High mechanical strength;
3.Low thermal conductivity;
4.Good stability
5. Mainly apply to the insulation layer of coal-water slurry gasifier
6. Excellent thermal insulation
7. Long service life
8. High compressive strength
9. Competitive price
Alumina Bubble Brick Application:
The bubble alumina brick are mainly used for lining of high temperature furnace and industry ceramic, electrical ceramic, petrochemical and metallurgical industries, as well as the insulation material for super high temperature furnace.
Alumina Bubble Brick Physical and chemical index:
Item | RS-85 | RS-90 | RS-99 | |
| Chemical composition | Al2O3 | ≥85 | ≥90 | ≥99 |
SiO2 | ≤13 | ≤8 | ≤0.2 | |
Fe2O3 | ≤0.5 | ≤0.5 | ≤0.5 | |
Apparent Porosity% | 58-62 | 58-62 | 58-62 | |
Bulk Density g/cm3 | 1.4-1.7 | 1.4-1.7 | 1.4-1.7 | |
Cold Crushing Strength Mpa | ≥12 | ≥10 | ≥9 | |
0.1Mpa Refractoriness Under Load T0.6 °C | ≥1650 | ≥1700 | ≥1700 | |
Permanent Linear Change On Reheating | ±0.3 | ±0.3 | ±0.3 | |
20-1300°C Thermal Expansion % (x 10-6) | 0-7.8 | 0-8.0 | 0-8.6 | |
Thermal Conductivity(Average 800°C) W/(M.K) | ≤0.8 | ≤1.3 | ≤1.5 | |
Max Service Temperature °C | 1680 | 1700 | 1800 | |
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