| We produce this kind of Brown Aluminium Oxide grain normally used in blasting or polishing applications, such as removal of oil, grease, dirt, loose mill scale, lacquer kicking off, cloth grinding, glass blasting and other applications. Usually we call it blasting grade BFA sand. |
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Typical Chemical Analysis |
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|
| Al2O3 |
Fe2O3 |
TiO2 |
SiO2 |
|
92.13%
|
2.38% |
2.98% |
2.10% |
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|
| Color |
Dark brown |
| Shape |
Blocky, tough and sharp |
| Crystal Form |
Alpha-alumina trigonal system |
| True Specific Gravity |
3.96 g/cm3 |
| Hardness |
2090 Knoop scale; 9.0 Mohs scale |
| Melting Temperature |
About 2050 ℃
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| 8 |
12 |
14 |
16 |
20 |
22 |
24 |
30 |
36 |
40 |
46 |
54 |
| 60 |
70 |
80 |
90 |
100 |
120 |
150 |
180 |
220 |
240 |
280 |
320 |
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Bulk Density Test Value (g/cm3) |
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|
| Grit No |
F12 |
F14 |
F16 |
F20 |
F24 |
F30 |
F36 |
F40 |
F46 |
| B.D |
1.79-1.87 |
1.76-1.84 |
1.74-1.82 |
1.72-1.80 |
1.70-1.78 |
1.68-1.76 |
1.66-1.74 |
1.63-1.71 |
1.61-1.69 |
| Grit No |
F54 |
F60 |
F70 |
F80 |
F100 |
F120 |
F150 |
F180 |
F220 |
| B.D |
1.59-1.67 |
1.57-1.65 |
1.54-1.62 |
1.51-1.59 |
1.48-1.56 |
1.45-1.53 |
1.43-1.52 |
1.41-1.49 |
1.40-1.48 |
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