Products
Precision Casting Advanced Refractory Material White Corundum 280 Mesh 320 Mesh
Product Description
White fused alumina powder is made of high-purity low-sodium alumina powder by melting at the high temperature, cooling crystallization, and then crushing. The white fused aluminum oxide powder grit is under strict controlling to keep the grain size distribution and the consistent appearance.
The grain size distribution of the white fused alumina powder is narrow. After shaping processing, high purity white corundum powder has full grain, sharp edges and corners, high grinding efficiency, high polishing brightness. The grinding efficiency is much higher than the soft abrasives such as silica.
CHEMICAL PROPERTIES
| Abrasives Grade | Refractory Grade | |||||
| Item | Grain | Micro Powder | Group Size | Fine Powder | ||
| Al2O3 (%)≥ | 99 | 99 | 99 | 98.5 | 99 | 99 |
| Fe2O3 (%)≤ | 0.05 | 0.06 | 0.08 | 0.1 | 0.1 | 0.1 |
| SiO2 (%)≤ | 0.26 | 0.28 | 0.30 | 0.40 | 0.35 | 0.35 |
| TiO2 (%)≤ | 0.08 | 0.09 | 0.10 | 0.15 | 0.3 | 0.3 |
| Size | 12-80 | 90-150 | 180-220 | 240-4000 | 0-1mm
1-3mm 3-5mm 5-8mm |
-180mesh -200mesh -240mesh -320mesh |
|
Physical Properties |
||||
| Appearance | Angular | |||
| Color | White | |||
| Hardness | MOH 9.0 2100-3000kgf/cm2 | |||
| True Density | ≥3.90g/cm3 | |||
| Basic Material | a-Al2O3 | |||
|
Chemical Analysis |
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|
Grain Size |
Component |
Required by GB Standard |
Typical Value of Our Product |
|
#4 - #80 |
Al2O3 |
≥ 99.10% |
99.65% |
|
Na2O |
≤ 0.35% |
0.22% |
|
|
Fe2O3 |
- |
0.03% |
|
|
SiO2 |
- |
0.03% |
|
|
#90 - #150 |
Al2O3 |
≥ 99.10% |
99.35% |
|
Na2O |
≤ 0.40% |
0.30% |
|
|
Fe2O3 |
- |
0.04% |
|
|
SiO2 |
- |
0.05% |
|
|
#180 - #220 |
Al2O3 |
≥ 98.60% |
99.20% |
|
Na2O |
≤ 0.50% |
0.34% |
|
|
Fe2O3 |
- |
0.05% |
|
|
SiO2 |
- |
0.08% |
|
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Grinding and Polishing
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Surface Preparation
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Refractories
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Precision Casting
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Abrasive Blasting
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Superabrasives
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Ceramics and Tiles
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