Description:
Brown fused alumina powder is produced by melting with high-quality bauxite, iron filings, and anthracite in an electric arc furnace at 2200℃ high temperatures . Then crushed, and shaped in a self-grinding machine, iron is removed by magnetic separation, and it is screened into various sizes. The main chemical component is 92%-96% Al2O3 , along with a little 0.5-1% Fe2O3, 1.5-3% SiO2, and 3-5% Ti2O3. It has a dense texture, high hardness, and is brown in color with great toughness. It’s suitable for manufacturing ceramic and resin high-bond abrasives, as well as for sand blasting, polishing, gringding, abrasive tools, precison casting and refractory materials.
Production flow:
Typical Physical Properties:
型号Available sizes： | F8, F10, F12, F14, F16, F20, F22, F24, F30, F36, F40, F46, F54, F60, F70, F80, F90, F100, F120, F150, F180, F220# | |||||
chemcial data | ||||||
型号Size | Al2O3 | TiO2 | Fe2O3 | SiO2 | ||
400# | ≥92% | ≤5% | ≤1% | ≤2.5% | ||
physical data | ||||||
堆积密度（Bulk density） | 体积密度（Specific Gravity） | 莫氏硬度(Mohs Hardness) | ||||
1.75-1.95g/cm3 | 3.6-3.9g/cm3 min | 9 | ||||
