Fused Bubble Alumina is produced by blowing the melt of high purity Bayer process alumina in 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.
Technical Specification:
| Parameters | INDEX |
| Al2O3 | 98.7% Min |
| SiO2 | 1.1% Max |
| Fe2O3 | 0.10% Max |
| Na2O | 0.50% Max |
| Bulk Density BD ( g/cc ) | 1.0 Max |
| Apparent Porosity AP |
|
| Grit Sizes | 4F, 22F, 0.2-0.5mm |
Other Details:

Price:
Minimum Order Quantity : 50 Kilograms
Color : Light brown to gray
Product Type : Other, Refractory raw material
Dimensional Stability : Other, Excellent at high temperatures
Shape : Other, Block, Granule, Powder, Lump
Types of Refractories : Acid Refractory
Minimum Order Quantity : 50 Kilograms
Color : White
Product Type : Mineral Refractories
Dimensional Stability : Irreversible
Shape : Granule
Types of Refractories : Other,