Brown Fused Alumina (BFA) is made from premium bauxite, anthracite, and iron filings, which are fused at temperatures above 2000°C in an electric arc furnace. The material is then crushed,shaped in a self-mill, magnetically separated to remove iron, and sorted into various particle sizes. It has a dense, hard structure with spherical particles, making it ideal for producing high-performance abrasive tools made of ceramics and resin. BFA is also used for grinding, polishing, sandblasting, precision casting, and the manufacture of high-quality refractory materials.
Features:
- High purity
- Excellent crystallization and strong fluidity
- Low linear expansion coefficient and high corrosion resistance
Applications:
1. Abrasive Blasting: BFA Brown Fused Alumina is widely used in abrasive blasting applications, including for aluminum, copper profiles, glass, washed jeans, precision molds, and various other industries.
2. Grinding: As a high-performance abrasive, BFA is used in grinding applications such as picture tubes, optical glass, lenses, watches with glass, crystal glass, and jade. It is a key material in domestic high-end grinding processes.
3. Resin Bond Abrasive Tools: BFA is ideal for use in resin bond abrasive tools due to its suitable color, excellent hardness, toughness, appropriate particle structure, and edge retention.
4. Coated Abrasives: BFA is also used in the production of coated abrasives, offering durability and performance.
5. Corundum Functional Fillers: BFA serves as an effective corundum functional filler in various applications.
6. Filter Media: BFA is used as a filtration medium due to its efficient properties.
Additionally, it is used in producing high-quality refractory materials, such as hook refractory materials and refractory castables.
PRODUCT SPECIFICATIONS:
| PRODUCT | SIZE |
SIZE DISTRIBUTION |
BULK DENSITY | ||||
| ROUGH GRAIN | COARSE GRAIN | BASIC GRAIN | MIXED GRAIN | FINE GRAIN | |||
| BROWN FUSED ALUMINA | 20# | 0 | 19 | 49 | 73 | 0.2 | 1.91 |
| BROWN FUSED ALUMINA | 36# | 0 | 14 | 47 | 71 | 1.2 | 1.83 |
| BROWN FUSED ALUMINA | 60# | 0 | 17 | 52 | 72 | 2.1 | 1.66 |
| BROWN FUSED ALUMINA | 120# | 0 | 19 | 42 | 69 | 2.6 | 1.65 |
| BROWN FUSED ALUMINA | 180# | 0 | 12 | 46 | 66 | 5.0 | 1.61 |
| PRODUCT | SIZE | CHEMICAL COMPOSITION | ||||
| TEST ITEM | AL2CO3 | SiO2 | FE2O3 | TiO2 | ||
| STANDARDS | ≥95% | ≤1.5% | ≤0.4% | 2.2%-3.2% | ||
| BROWN FUSED ALUMINA | ALL GIVEN SIZES | MEASURED VALUE | 95.45 | 0.78 | 0.21 | 2.74 |
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