1. High AL2O3 content: 99%min;
2.More than3.9 Bulk Density;
3. Barmac Grains;
4. Passed ISO9001:2000;
5.25 years experience.
White Fused Alumina
♣De
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It is fused by alumina powder by electric arc furnace under high temperature.
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It has white color and little higher hardness and lower toughness comparing with brown fused alumina.
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The micro hardness of the product is 2200-2300kg/mm2. It has higher hardness and slight lower toughness comparing with brown fused alumina.
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It is also characterized by its high purity, acid and alkali resistance, good thermal stability.
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It’s the high grade refractory materials.
♣ The chenmical performance index
Purpose |
Specification |
Chemical Composition% |
||||
Al2O3 |
Na2O |
SiO2 |
CaO |
|||
For Abrasives |
F |
12#—80# |
≥99.0 |
≤0.5 |
— |
≤0.4 |
90#—150# |
≥98.5 |
≤0.6 |
||||
180#—240# |
≥98.2 |
≤0.7 |
— |
≤0.4 |
||
W |
1#-63# |
≥97.5 |
≤0.8 |
≤1.0 |
≤0.5 |
|
Refractory |
- |
0-1mm |
≥99.0 |
≤0.5 |
— |
≤0.4 |
Micro-powder |
180#—0 |
≥98.5 |
≤0.3 |
≤0.5 |
♣Physical Performance Index
Item |
Index |
Color |
White |
Crystal shape |
Trigonal |
Hardness(mohs) |
≥9.0 |
Melting Point (°C) |
2250 |
True density (g/cm3) |
≥3. 90 |
Linear Expansion Coefficient(0—1600°C) |
7—9 |