White fused al2o3 800# for lens polishing

Introduce

INTRODUCE

White fused al2o3 800# lens polishing belongs to electro-corundum. It is also be called white aluminum oxide, white corundum or white fused aluminum oxide. White fused alumina is obtained from the fusion of high purity calcined alumina in electric arc furnaces. Compared with brown fused alumina, white fused alumina is characterized with high alumina purity, high hardness, chemical stability, high melting point, and large crystal size. It is widely used in coated and bonded abrasives, polishing, precision casting, sandblasting and refractory raw materials.

Chemical Analysis

Al2o3	99.2%min
SiO2	0.02%max
Fe2O3	0.1%max
Na2O	0.35%max

Physical Properties:

Crystal System	Trigonal system
Mohs Hardness	≥9
True Density	≥3.5
Specific gravity	Approx. 3,9 5 g/m³
Bulk density (Dependent on grain size)	Approx. 1.75-1.95 g/m³

Applications

•lens polishing
•oil stone

•Grinding, lapping and polishing medium
• Coated and bonded abrasives grain materials
• Precision casting
• Refractory raw materials
• Ware-resistance
• Road surface preparation

Factory