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白刚玉
The white fused corundum is made from alumina a melt in an arc furnace at high temperature and it is one of the important materials for advancde refractories and adrasive tools. Its properties are shown as following.
Size:for refractory:8-5mm,5-3mm,3-1mm,1-0mm & other special requriement
Size:for adrasive:FEPA 10-3000#; ISO 10-3000#
Physical Properties |
Chemical Composition
(%) |
Particle Size |
Fine Powder |
Principal crystalline phase:
α -Al 2 O 3 |
Al 2 O 3 |
≥ 99 |
≥ 98.5 |
Cystal system: Hexzagon |
Na 2 O |
≤ 0.4 |
≤ 0.4 |
Colour and lustre: White |
SiO 2 |
≤ 0.2 |
≤ 0.25 |
Ture densyty(g/cm 3 ): ≥ 3.95 |
Fe 2 O 3 |
≤ 0.15 |
≤ 0.5 |
Packing density (g/cm 3 ): 1.75-1.95 |
Mohs hardness: 9 |
Linear expansion Coefficent (1/°C):8.3×10 -4 |
Grain size (mm) |
3~5, 1~3, 0~1 |
Fine Powder (mesh) |
80, 120, 180, 220, 240, 320 etc |
Micro Powder (um) |
3~5,5~10 |
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