Polishing Materials Grade A Brown Fused Alumina for Abrasive
Product Description
Brown fused alumina also named emery. The raw materials is bauxite, carbon materials and iron scrap. Put the raw materials into arc furnace, passed the high temperature. The main ingredient is Al2O3 and the content is 75-95%. Also have some other ingredient, such as Ti, Si, Fe. The brown fused alumina is the based material of the abrasive.
The brown fused alumina have many kinds of size.
Section of sand(Refractory): 0-1, 1-3, 3-5, 5-8mm
Granular: 16, 20, 24, 30, 36, 46, 60, 80, 100, 120, 150, 180, 200, 220mesh
Powder: 325, 400, 600, 800, 1000, 1200, 1500, 1800, 2000mesh
Production process:
sorting of the raw materials → electrolytic smelting → crushing → magnetic separation → filter → physical and chemical testing→ packing → warehousing
Features of the brown fused alumina:
- High hardness
- Good crystallization
- Line flow energy consumption is good
- It have less ash.
Usage of the brown fused alumina:
- Used to make the high grade refractory, refractory bricks, pouring materials.
- Sandblasting
- Polishing
Specification of the brown fused alumina:
Ingredient Content |
Grade A |
Grade A' |
Grade B |
Grade B' |
Grade C |
Al2O3 |
95% |
90% |
85% |
80% |
70% |
TiO2 |
1.5% |
1.8% |
2.0% |
2.6% |
3.8% |
SiO2 |
1.5% |
1.8% |
2.0% |
2.5% |
3.0% |
Fe2O3 |
0.3% |
1.0% |
1.8% |
3.0% |
4.3% |
Note: Using time: Grade A 5-7tims. Grade B 3-5times. Grade C 1-2times.