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white fused alumina, brown fused aumina, silicon carbide, bubble alumina, glass beads, dense alumina
white fused alumina, brown fused aumina, silicon carbide, bubble alumina, glass beads, dense alumina
The process of brown fused alumina grit F-size F8-F220 :
Brown fused alumina is produced from high-quality bauxite. This process is conducted via the 3500 KVA electric arc furnace at a temperature higher than 2200℃.
bauxite is broken into crushing machine — elevating– roll crusher mill– sizing —magnetic separator —fine sieve —water washing (acid washing )—package (25kg/pp bag or 25kg paper bag,40 bags/ton bag or pallet )
Our brown fused alumina covers two production lines. The F type is mainly used for producing resin cutting /grinding wheels and sandblasting. The P-type is designed for coating abrasives.
FEPA Average grain size (µm) brown fused alumina grit F-size F8-F220
| F8 | 2000 – 2800µm |
| F10 | 1700 – 2360µm |
| F12 | 1400 – 2000µm |
| F14 | 1180 – 1700µm |
| F16 | 1000 – 1400µm |
| F20 | 850 – 1180µm |
| F22 | 710 – 1000µm |
| F24 | 600 – 850µm |
| F30 | 500 – 710µm |
| F36 | 425 – 600µm |
| F40 | 355 – 500µm |
| F46 | 300 – 425µm |
| F54 | 250 – 355µm |
| F60 | 212 – 300µm |
| F70 | 180 – 250µm |
| F80 | 150 – 212µm |
| F90 | 125 – 180µm |
| F100 | 106 – 150µm |
| F120 | 90 – 125µm |
| F150 | 63 – 106µm |
| F180 | 53 – 90µm |
| F220 | 45 – 75µm |
Typical physical properties of brown fused alumina grit F-size F8-F220
| Hardness | 9 Mohs |
| Grain shape | angular |
| Melting point | 2050 °C |
| Specific gravity | 3.9 – 4.1 g/cm3 |
| Bulk density | 1.5 – 2.1 g/cm3 |
Typical chemical analysis of brown fused alumina grit F-size F8-F220
| Al2O3 | 95.65 % |
| TiO2 | 2.42 % |
| Fe2O3 | 0.12 % |
| SiO2 | 0.92 % |
| CaO | 0.35 % |