Aluminum Oxide
Aluminum Oxide is generally produced by high quality bauxites together with hard coal through the fusion in electric arc furnaces subject to temperature in excess of 2000°C. Aluminum oxide, a chemically stable compound is resistant to most acid as well as against chemical effects caused by gases, metallic also at high temperatures. Fused aluminum oxide is a tough, hard material with high strength, excellent wear and corrosion resistance and good thermal conductivity.
| General Characteristic | Friable | Regular |
| Color | White | Reddish-Brown |
| Crystal Structure | α- Al2O3 Trigonal in the Hexagonal system. Polycrystalline | α- Al2O3 Trigonal in the Hexagonal system. Polycrystalline |
| Grain Shape | Angular. Sharp-edged | Angular. Sharp-edged |
| Specific Gravity | 3.92 g/cm3 | 3.92 g/cm3 |
| Melting Point | Over 2000℃ | Over 1950℃ |
Chemical compositions:
| Al2O3 | : 90.0 – 99.6 % | ||
| SiO2 | : ＜2.0 % | Fe2O3 : ＜3.0 % | |
Physical properties:
| Color | : brown, white, pink |
| Crystal shape | : sharply, blocky |
| Smell | : none |
| Hardness | : Moh’s scale 9 |
| specific gravity | :3.9 |
-
Application:
Grinding，lapping，polishing，blasting
Production specification:
Marco grits: #16 - # 220 Micro grits: #240 - #8000
Packing: 20 kgs / bag or 25 kgs / bag