- Other Organic Chemical[4]
- Chemical Auxiliary Agent[9]
- Chemical Reagents[6]
- Alkali[10]
- Chloride[2]
- Phosphate[8]
- Other Chemicals[10]
- Gas Disposal[1]
- Waste Management[1]
- Water Treatment[10]
- Abrasives[10]
- Refractory[8]
- Contact Person : Mr. Han Chaoli
- Company Name : Wenxian Hongtai Water Treatment Material Factory
- Tel : 86-371-66559912
- Fax : 86-371-66558918
- Address : Henan,wenxian,Wenxian Yue Village Industrial Zone, No. 66
- Country/Region : China
- Zip : 454800
Black fused alumina
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Black fused alumina
Introduction:
Black corundum is also known as low aluminum corundum. It is also a new type product of polishing material, and it is a dark gray crystal body made α-Al2O3 and ferropicotite
as main ore in the electric arc furnace by smelting the bauxite. It has characteristics
of moderate hardness, high toughness, high temperature resistance, and stable thermal stability. It is mainly suitable for free grinding, such as coarse grinding before electroplating products, mainly for polishing and sandblasting of stainless steel, fabricated metal products.
Technical data:
Specifications | Main Chemical Composition % | ||
Al2O3 | Fe2O3 | SiO2 | |
BA—Ⅰ | 81—85 | 9—11 | ≤8 |
BA—Ⅱ | 75—80 | 10—12 | ≤10 |
Item | Indicators |
Color | Black |
Crystal | Trigonal system |
Hardness (Mohs) | ≥ 9.0 |
Melting point (°C) | 2050 |
The maximum temperature (°C) | 1850 |
True Density (g/cm3) | ≥ 3. 50 |
Linear expansion coefficient (0-1600 °C) | 7-9 |
Black fused alumina
