Brown fused alumina is made by high quality bauxite as main material, fusing and purifying in a pouring electric arc furnace at a temperature of over 2200 degree Celsius.
Chemical Composition (%)
Grit Size | Al2O3 | TiO2 | SiO2 | Fe2O3 | CaO |
F4-F80 | 95.0-96.0 | 1.50-3.80 | 1.21 | 0.3 | 0.45 |
F90-F150 | 94.5-95.5 | ||||
F180-F220 | 93.5-95.5 | ||||
F220 Finer | ≥92.0 |
Physical Index
Crystal System | Hexagonal |
True Density | 3.90g/cm3 min |
Mohs Hardness | 9 |
Micro hardness | HV1800-2200 |
Size Available
Abrasives F12-F1200, P12-P2500
Refractory 0-1mm,1-3mm,3-5mm,5-8mm,200mesh,325mesh
Other special specification could be supplied as required
Refractory materials including low cement casting, plastics, bricks, etc.