Brown Fused Alumina
Brown Fused Alumina
Brown fused alumina (BFA), also known as corundum, is a brown artificial corundum obtained by melting and reducing three raw materials of bauxite, carbon material and iron filings in an EAF.
Brown fused alumina has the characteristics of high purity, good crystallization, strong fluidity, low linear expansion coefficient and corrosion resistance. It is the most basic abrasive, which can also be used to produce refractory materials.
| Item | Abrasives Grade | Refractory Grade | ||||
| Grain | Micro Powder | Group Size | Fine Powder | |||
| BFA-95 | BFA-94 | BFA-93 | BFA-92.5 | BFA-94.5 | BFA-93.5 | |
| Al2O3 (%), ≥ | 95 | 94 | 93 | 92.5 | 94.5 | 93.5 |
| Fe2O3 (%), ≤ | 0.3 | 0.3 | 0.3 | 0.5 | 0.3 | 0.5 |
| SiO2 (%), ≤ | 1.5 | 1.5 | 1.5 | 1.8 | 1.5 | 1.5 |
| TiO2 (%), ≤ | 3.0 | 3.0 | 3.5 | 4.0 | 3.0 | 3.5 |
| Size | 12-80 | 90-150 | 180-220 | 240-4000 | 0-1mm 1-3mm 3-5mm 5-8mm | -180mesh -200mesh -240mesh -320mesh |
