Black Fused Alumina Size:
FEPA standard: F*2~F**0, F**0~F***0

Black Fused Alumina selects and uses bauxite, iron oxide raw materials and adds to other microelement aborative smelt by tilting arc furnace, ensuring all the piece shape black corundum were high grade product. Few impurity, high grade and stable quality, which prepares the ground for producing grain-size sands and micro-powder with moderate rigidity, fine tenacity and excellent service performance.

Black Fused Alumina main chemical components of segment sand and grain-size sand:
**1mm, **3mm **5mm: Al2O3 *3% min
#8~#*0 Al2O3 *3% min
#*0~#**0 Al2O3 *7%min

Black Fused Alumina main chemical components of the choicest goods:
#*6~#*0 Al2O3 *2%min
#*0~#**0 Al2O3 *0% min
F**0~F***0 Al2O3 *3%min