Brown Fused Alumina (BFA), also known as brown corundum, is produced by smelting high‑grade bauxite together with anthracite and iron filings in electric arc furnace at 2000‑2050 ℃. After cooling, crushing, shaping, magnetic iron‑removal and size classification, we obtain angular grains and fine powders with main crystal phase α‑Al₂O₃.
BFA features brown‑colored dense grain structure, Mohs hardness of 9.0 and melting point of 2250 ℃. Compared with white fused alumina(WFA), brown fused alumina delivers higher toughness and better impact resistance with competitive cost. It contains minor TiO₂ and Fe₂O₃ impurities, widely applied for mass‑volume abrasive and general‑purpose refractory applications.
Key Features：
‑ Melting point 2250 ℃, good slag corrosion resistance and high‑temperature volume stability.
‑ High hardness and superior toughness, better anti‑breakage performance than white fused alumina.
‑ Stable chemical property with good acid‑alkali resistance.‑ Cost‑effective for large‑scale industrial procurement.
Available Grades：
‑ Standard refractory grade: Al₂O₃ ≥95.0% (most popular export grade)
Main Applications：
‑ Refractory industry: aggregate for high‑alumina castables and other monolithic refractories; raw material for high‑alumina bricks and wear‑resistant precast blocks
.‑ Abrasive field: grinding wheels, cutting discs, sandblasting rust removal, lapping polishing and water‑jet cutting.
‑ Wear‑resistant flooring, anti‑corrosion filler and precision casting.
Available Sizes& Packing：
Refractory Fraction: 0‑1 mm,1‑3 mm,3‑5 mm,5‑8 mm
Powder:100mesh ,200mesh,325mesh
Abrasive grits comply with FEPA‑F standards.
*Sizes can be customized upon request.
Packing: 1/1.25 MT ton bags, 25 kg bags or on request.
COA certificate provided per batch.
Specification:
Chemical Composition | BFA |
Al₂O₃ | 95% min |
TiO₂ | 2.80% max |
SiO₂ | 1.20% max |
Fe₂O₃ | 0.5% max |
Melting Point | 2250 ℃ |
Mohs Hardness | 9.0 |
Specific gravity | 3.90 g/cm³ |
*Specifications and Sizes can be customized upon request.
Available Sizes& Packing：
Refractory Fraction: 0‑1 mm,1‑3 mm,3‑5 mm,5‑8 mm
Powder:100mesh ,200mesh,325mesh
Abrasive grits comply with FEPA‑F standards.
*Sizes can be customized upon request.
Packing: 1/1.25 MT ton bags, 25 kg bags or on request.
COA certificate provided per batch.