Brown fused alumina refractory possesses high purity, good crystal, strong fluidity, low coefficient of linear expansion, good corrosion resistance, and so on. Through decades of practical application in the refractory industry, Brown Fused Alumina can’t burst, pulverize and craze in the using course. In particular, its performance-cost ratio is much higher than other refractory materials, making brown fused alumina become the best aggregate and padding of brown fused alumina refractory materials.
Typical physical properties of brown fused alumina
Item | Content |
Hardness | 9 Mohs |
Grain shape | angular |
Melting point | 1950℃ |
Specific gravity | 3,9-4,1g/cm3 |
Typical chemical contents of brown fused alumina
Item | Process of Tilt Furnace | Process of Fixed Furnace | ||
Assurance Value | Typical Value | Assurance Value | Typical Value | |
Al2O3 | 95% min | 0.9565 | 95% min | 0.9543 |
TiO2 | 3% max | 0.0242 | 3.0% max | 0.0249 |
Fe2O3 | 0.3% max | 0.0012 | 0.3% max | 0.0011 |
SiO2 | 1.0% max | 0.0092 | 1.5% max | 0.0128 |
Specification | Average size |
Grit | 0-0.5 mm |
0.5-1 mm | |
1-3 mm | |
3-5 mm | |
5-8 mm | |
8-15 mm | |
10-20 mm | |
20-40 mm | |
20-50 mm | |
30-50 mm | |
Fine Power | 180Mesh-0 |
240Mesh-0 | |
320Mesh-0 |
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