Brown Fused Alumina

Brown fused Alumina Brown fused Alumina is fused and crystalized under high temparature from a mixture of bauxite and other raw materials. It is characterized by its high hardness, good toughness and sharp shape in size. Abrasives tools made of it are suitable for grinding metals of high-tensile strength such as: carbon stell, general-purpose alloy steel, annealed malleable iron and hard bronze, etc. It also can be used as refractory materials. Chmical Composition (%) GB/T 2479-1996CHEMICAL Composition (%, by weight )TypeGrit SizeAl203TiO2CaOHD-BC-01P80&P100 P15095.00 97.501.50 3.80MAX 0.45P180 P22094.00 97.50P220 FinerMIN 92.00HD-BC-02P8 P80MIN 93.001.50 4.20----P100 P200MIN 91.00----P220 FinerMIN 90.00MAX 4.50---- According to customer’s requirement, various spec of group size and mixed sizes also can be supplied. Its reference chemical composition is as following: Group sizes(mm)Main Chemical Content(%)Other Chemical Content(%)8 5, 5 3,3 1, 1 0 Al2O3 MIN 94.50SiO2 MIAX 1%ZrO2 MAX 0.2CaO MAX 0.5MgO MAX 0.4TiO2 MAX 3.8Fe2O3 max 0.4