Black Fused Alumina
Black fused alumina is a kind of flexible abrasive material, which is made of high iron bauxite fused at high temperature in an electric arc furnace and then cool to produce a gray-black crystal with a-Al2O3 and iron spinel as the main mineral phases. Black corundum is an energy-saving and...
Black fused alumina is a kind of flexible abrasive material, which is made of high iron bauxite fused at high temperature in an electric arc furnace and then cool to produce a gray-black crystal with a-Al2O3 and iron spinel as the main mineral phases. Black corundum is an energy-saving and environmentally-friendly alternative wear resistant material because its production process uses waste comprehensive utilization and does not produce any harmful gas.
Products Description
SIZE OF BLACK FUSED ALUMINA
| "FEPA" | F8 F10 F12 F14 F16 F20 F22 F24 F30 F36 F40 F46 F54 F60 F70 F80 F90 F100 F120 F150 F180 F220 F230 F240 F280 F320 F360 F400 F500 F600 F800 F1000 |
Specification
PHYSICAL INDEX OF BLACK FUSED ALUMINA
| Color | Black |
| Crystal shape | Trigonal crystal system |
| Melting point(℃) | 2050 |
| Max temperature(℃) | 1850 |
| True density(g/cm3) | 3.5 |
CHEMICAL INDEX OF BLACK FUSED ALUMINA
| GRADE | Al2O3(%) | SiO2(%) | Fe2O3(%) | TiO2(%) |
| A | >60 | <30 | 5-13 | 2-4 |
| A+ | >70 | <15 | 5-10 | 2-4 |
APPLICATION OF BLACK FUSED ALUMINA
| 1. Preferred material of the slip-prevented road and coal pits warehousing. | ||||
| 2. Manufacturing resin-cutting slice, edges and corners grinding and coated abrasives. | ||||
| 3. Light ornament, plastic and hardware polishing, and also applicable to the sand blasting. | ||||
| 4. Suitable for stainless steel work piece polishing and abrading and making the whetstone and polishing paste. | ||||
| 5. Used for the bicycle, motorcycle, sewing machine, and clock parts. | ||||
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