99.5% high purity refractory white fused alumina
White fused alumina / White Corundum is a high-grade refractory material, which made from high-quality alumina powder by melting above 2000 ℃ in the electric arc furnace and cooling, classified into different grain sizes. The white fused alumina is the main raw material for the production of unshaped and shaped refractory materials.
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Properties/type |
0-1mm, 1-3mm, 3-5mm |
0-100, 0-200, 0-320mesh |
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Guarantee Value |
Typical Value |
Guarantee Value |
Typical Value |
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|
Chemical composition |
AI2O3 |
99.0 min |
99.5 |
98.5min |
99.0 |
|
SiO2 |
0.4 max |
0.06 |
0.3max |
0.08 |
|
|
Fe2O3 |
0.2 max |
0.04 |
0.2max |
0.10 |
|
|
Na2O |
0.4 max |
0.30 |
0.4max |
0.35 |
|
|
Test items |
indicators |
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Mohs hardness |
9.0 |
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Bulk density |
1.75-1.95g/cm3 |
|
Real density |
3.95g/cm3 |
|
Melting point |
2250℃ |
|
The highest operating temperature |
1900℃ |
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