Introduction of Light Weight Alumina Hollow Ball Brick High Alumina Bubble Brick High Quality Insulation Bricks For Kiln
Alumina bubble brick, also known as lightweight alumina brick or bubble alumina brick, is a type of refractory material used in high-temperature industrial applications. It is known for its excellent insulating properties and high resistance to heat and chemical corrosion.
Features of Alumina Bubble Brick
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
Advantages of Alumina Bubble Brick
Exceptional insulating properties.
High resistance to heat and thermal shock.
Good chemical resistance.
Lightweight, which can help reduce the load on the supporting structure.
Parameter of Light Weight Alumina Hollow Ball Brick
Item |
Index |
GQZ-1 |
GQZ-2 |
GQZ-3 |
GQZ-4 |
GQZ-5 |
GQZ-6 |
Zr(Hf)O2+Stabilizer % |
≥99 |
≥98 |
Al2O3 % |
≤0.4 |
≤0.6 |
SiO2 % |
≤0.2 |
≤0.4 |
Fe2O3 % |
≤0.2 |
≤0.2 |
Bulk Density g/cm3 |
2.4~2.9 |
2.9~3.2 |
3.2~3.8 |
2.4~2.9 |
2.9~3.2 |
3.2~3.8 |
Cold Crush Strength MPa |
≥10 |
≥15 |
≥20 |
≥10 |
≥15 |
≥20 |
Thermal Conductivity W/(m·K)
Hot Face 1100℃ |
≤0.7 |
≤0.9 |
≤1.2 |
≤0.7 |
≤0.9 |
≤1.2 |
Permanent linear change %
1600℃×3h |
-0.3~0 |
-0.3~0
|