high purity alumina bubble of refractory material
1,white fused alumina bubble for refractory 2,shape:ball 3,enjoy a high reputation 4,reasonable prices
Fused alumina bubble is produced by blowing the melt of high bayer process alumina a controlled atmosphere to produce hollow spheres.Due to its low density and extremely low thermal conductivity fused alumina bubble is ideal for high alumina based insulating Bricks and castables.
| CHEMICAL COMPOSITION | QUOTA | Typical Values |
| Al2O3%> | 99 | 99.4 |
| SiO2%< | 0.2 | 0.17 |
| Na2O%< | 0.2 | 0.15 |
| Fe2O3%< | 0.15 | 0.08 |
| PACKING DENSITY(g/cm3) | 0.5-1.0 | |
| PACKING SIZE(Φmm) | 0.2-5 |
high purity alumina bubble of refractory material
