Brown fused alumina is fused in the electric furnace with the high quality abrasive grade bauxite , coal and scrap iron as the raw material.
Brown Fused Alumina for refractory is characterized by high purity, good crystal, strong fluidity, low coefficient of linear expansion ,good corrosion-resistance and so on.
Brown Fused Alumina can’t burst、pulverise and craze in the using course.
In particular, its performance-cost ratio is much higher than traditional Brown Fused Alumina,
making Brown Fused Alumina become the best aggregate and padding of brown fused alumina refractory materials.
Brown Fused Alumina
| Purpose | Specification | Chemical composition(%) | Magnetic material content(%) | ||||
| Al2O3 | Fe2O3 | SiO2 | TiO2 | ||||
| For refractory | Size sand | 0-1mm 1-3mm 3-5mm 5-8mm | 95 Min | 0.3 Max | 1.5 Max | 3.0 Max | — |
| 0-3mm 0-5mm 0-10mm | 95Min | 0.3 Max | 1.5Max | 3.0Max | — | ||
| Fine powder | 180#-0 200#-0 325#-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 |
3.85g/cm3 |
9.0 |
2050℃ |
trigonal system |
1900℃ |
