Brown fused alumina is made of high-quality bauxite, anthracite and iron filings. It is cooled and smelted in a high temperature by more than 2000 degrees in an electric arc. It is crushed and shaped by a jaw crusher and a ball mill. After magnetic separation, then sieve separated to get various kinds. Brown fused alumina is good refractory due to its high hardness, high refractoriness, and good toughness.
Application:
Brown fused alumina is widely used as refractory：
- Refractory bricks, tiles
- Ramming and gunning mixture.
- Filter plates
- Castables and aggregate
- Other high temperature refractory products
| Typical Chemical composition(1-3mm) | |
| AL2O3 | 95% |
| Fe2O3 | 0.50% |
| Si2O | 1.85% |
| Ti2O | 0.40% |
| LOI | 0.10% |
| Magnetic content | / |
| Typical physical properties | |
| Basic minerals: | Al2O3 |
| Hardness: | Mohs 9.0 |
| Melting Point: | 2200 ℃ |
| Maximum service temperature | 1850℃ |
| Specific Gravity: | 3.95g/cm3 |
| True Density: | ≥3.6g/cm3 |
| Bulk density(LPD): | 1.53-1.99 g/cm3 |
| Color: | Brown |
| Particle shape: | Trigonal |
| Available grits | |
| Section Sand | 0-1mm,1-3mm,3-5mm,5-8mmOther sizes available upon request |
| Fine powder | 200-0#,320-0# Other sizes available upon request |
