Bubble alumina is a hollow ball made of industrial grade alumina powder as the main raw material, after high temperature melting, and blown with compressed air. Annual production capacity is 2000 tons.
Bubble alumina is a hollow ball made of industrial grade alumina powder as the main raw material, after high temperature melting, and blown with compressed air. Annual production capacity is 2000 tons.
Bubble alumina is a new type of high temperature insulation material, type A-A1:0, microcrystal. It has excellent properties of thin wall, high strength and high temperature heat insulation. Bubble alumina can be made into various shape products that with high mechanical strength, the highest working temperature is more than 1800℃.
◆ Petrochemical industrial
◆ Carbon black industrial reactor furnace
◆ Casting industry induction furnace
◆ Other super high temperature furnace
◆ High purity bubble alumina has high purity, high refractoriness, excellent chemical stability and good high temperature strength, has a good heat insulation effect at high temperature working condition
◆ High strength alumina has the characteristics of white color, thinner wall and higher strength, lower ball breaking rate, small accumulation density, etc. It can reduce products bulk density with better insulation performance when manufacturing castable and other insulation products.
| Item | High purity | High strength | |
| Chemical Composition (%) | Al2O3 | ≥99 | ≥98.5 |
| SiO2 | ≤0.2 | ≤1 | |
| Fe2O3 | ≤0.1 | ≤0.08 | |
| Na2O | ≤0.3 | ≤0.25 | |
| Stacking density, g/cm3 | 0.4-1 | ||
| Rate of reduction, % | ≤15 | ||
| Size, mm | 0-7 | ||
Submit Request
PDF Request
Back to list