Alumina hollow ball brick introduction
Alumina hollow ball brick for high temperature furnace is a kind of light refractory materials with excellent energy saving. They are characterized by high porosity, which can generally reach 40%-85%. The bulk density is low, generally less than 1.5g/cm3, especially in the 1800℃ high temperature kiln application.
Alumina hollow ball brick features
- High operating temperature:
Can reach more than 1750 degrees, good thermal stability. Reburn wire change rate is small, use longer. - To reduce the weight of the furnace:
Now high-temperature resistant materials belong to the heavy brick volume density of 2.6-3.0g/cm, and alumina hollow ball brick only 1.1~1.5g/cm, the same cubic meter volume, the use of alumina hollow ball brick can reduce the weight of 1.1-1.9 tons. - Energy saving:
Alumina hollow ball has obvious thermal insulation characteristics, low thermal conductivity, can play a very good thermal insulation effect, reduce heat emission, improve thermal efficiency, so as to save energy. The energy saving effect can reach more than 30%.
More refractory product: Thermal Insulation Silicon Brick for Refractory
Alumina hollow ball brick index
| Alumina Bubble brick | Al2O3 | Bulk Density | C.C.S | P.L.C(%) | Thermal Conductivity | R.U.L |
| - | (%) | (g/cm3) | (MPa,Min) | 1600℃*3h | (W/mk) | (0.2MPa,℃) |
| KR-90 | 90 | 1.1 | 10 | ±0.3 | 0.8 | 1650 |
| KR-90 | 90 | 1.3 | 12 | ±0.3 | 0.8 | 1700 |
| KR-95 | 95 | 1.5 | 12 | ±0.3 | 0.7 | 1750 |
Alumina hollow ball brick application
Alumina hollow ball brick has been widely used in high and ultra-high temperature kilns such as gasifier in petrochemical industry, carbon black industrial reactor and induction furnace in metallurgical industry, and has shown excellent energy saving effect.