Description
white aluminium oxide grain is made from high quality alumina by melting above 2000°C in the electric arc furnace and then cooling. It is with high purity, great self-sharpening, acid and alkali resistance, high temperature and stable thermal performance. Its hardness is a little higher than brown fused alumina. It is with low toughness, great grinding ability, small heat and high efficiency.
Physical and chemical analysis
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Physical properties
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Chemical compositions
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Value of specifications (%)
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Hexagonal
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Al2O3
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≥99.55
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Main crystal body
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Al2O3
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Color
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white
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Na2O
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≤0.22
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Grain density
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≥3.9 g/cm3
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Bulk density
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1.75-1.95 g/cm3
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SiO2
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≤0.03
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Morse hardness
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≥9
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Linear expansion coefficient(1/°C)
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8.3x10-4
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Fe2O3
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≤0.04
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Loss on ignition (%)
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≤0.08
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Performance and advantages of sandblasting:
1. Not affecting the color of the processing cases;
2. Sandblasting in the non-iron process;
3. High speed processing and quality;
4. Containing a very low amount of iron oxide, suitable for non-ferrous blasting operations.
4. Containing a very low amount of iron oxide, suitable for non-ferrous blasting operations.