Click on the image to check the artwork
By certification 
Comparing with brown fused alumina. It is also characterized by its high purity, acid and alkali resistance, good thermal stability. It’s the high grade refractory materials.
|
Purpose
|
Specification
|
Chemical composition(%)
|
Magnetic material content(%)
|
||||
|
Al2O3
|
Na2O
|
SiO2
|
CaO
|
||||
|
For refractory
|
Size sand
|
0-1mm
1-3mm
3-5mm
5-8mm
8-12mm
|
99.0Min | 0.5 Max |
—
|
0.4 Max
|
0.003 Max
|
|
Fine powder
|
180#-0
240#-0
320#-0
|
98.5Min |
0.3 Max
|
0.5 Max
|
0.001 Max
|
||
| Mohs Hadness | ≥10 |
| Melting Temperature（℃） | 2250 |
| Refractory Temperature（℃） | 1900 |
| True Density | ≥3. 50 |
