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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.
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Purpose
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Specification
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Chemical composition(%)
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Magnetic material content(%)
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Al2O3
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Na2O
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SiO2
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CaO
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For refractory
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Size sand
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0-1mm
1-3mm
3-5mm
5-8mm
8-12mm
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99.0Min | 0.5 Max |
—
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0.4 Max
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0.003 Max
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Fine powder
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180#-0
240#-0
320#-0
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98.5Min |
0.3 Max
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0.5 Max
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0.001 Max
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| Mohs Hadness | ≥10 |
| Melting Temperature（℃） | 2250 |
| Refractory Temperature（℃） | 1900 |
| True Density | ≥3. 50 |