Brown aluminum oxide is made from bauxite, coke (anthracite) as the main raw material, which is then smelted at high temperature in an electric furnace. The main component of brown aluminum oxide is alumina, and the grade is also distinguished by the aluminum content, the lower the aluminum content is, the lower the hardness is.
Chemical Composition:
| Type | Particle Size Range | Chemical Composition (%) | ||
| AL2O3 | TiO2 | CaO | ||
| F | F4-F80 | 95.00 ~ 97.50 | 1.5 ~ 3.8 | ≤0.30 |
| P4-P80 | ||||
| F90-F150 | 94.00 ~ 97.50 | |||
| P90-P150 | ||||
| P | F180-F220 | 93.00 ~ 97.50 | ||
| P180-P220 | ||||
| F240-F1500 | ≥92.00 | |||
| P240-P3000 | ||||
Physical properties:
| Basic Minerals | Crystal Size(μm) | True Density | Bulk Density | Hardness (kg/mm²) |
| (ɡ/cm³) | (ɡ/cm³) | |||
| Alpha-Al2O3 | 400-800 | ≥3.90 | 1.40-1.95 | 1800-2200 |
Product Features:
1. Strong grinding force: high hardness, no cracking, high fluidity.
2. Good fire resistance: smelted at high temperature, can manufacture refractory materials.
3. High intensity: high mechanical strength, stable performance.
4. Wide application: mainly used in refractory, grinding wheel, sand blasting.
5. Variety: the variety is complete and can be customized.