Brown Fused Alumina BFA for Refractory Brick
Brown Fused Alumina is fused in the electric-arc furnace under the high temperature of above 2250℃ with high quality abrasive bauxite as raw material and matched by the carbon material and scrap iron.The degree of refractory is more than 1850℃.
Purpose |
Specification |
Chemical composition(%) |
Magnetic material content(%) |
||||
Al2O3 |
Fe2O3 |
SiO2 |
TiO2 |
||||
For refractory |
Size sand |
0-1mm
1-3mm
3-5mm
5-8mm
8-12mm
|
95 Min |
0.3 Max |
1.5 Max |
3.0 Max |
— |
|
0-3mm
0-5mm
0-10mm
0-25mm
|
95Min | 0.3 Max | 1.5Max | 3.0Max | — |
||
Fine powder |
180#-0
240#-0
320#-0
|
93.5 Min |
0.5 Max |
1.5 Max |
3.5 Max |
— |
|
| Physical Properties | |||||
| Colour | True Density | Mohs Hadness | Melting Temperature | Crystal System | Refractory Temperature |
| Brown | 3.90g/cm3 |
9.0 | 2050℃ | trigonal system | 1900℃ |
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