Manufacturing white fused ceramic alumina white fused ceramic alumina,a kind of high-grade refractories, was made from the high quality alumina by melting above 2000 in the electric arc furnace and cooling. It is white with the main crystal phase alpha-Al2O3.The white alumina produced in titling electric arc furnace has the advantage of high bulk density and low porosity and the volume stability and thermal shock resistance can be improved. Product Name white fused ceramic alumina Material AL2O3 Al2O3 ≥99% Fe2O3 0.04% Na2O 0.26% SIO2 0.02% Bulk density 1.75-1.95g/cm3 Specific Gravity ≥3.95g/cm3 min Mohs Hardness 9.0 Products Show Used for refractory,castable,painting Size:0-1mm 1-3mm 3-5mm 3-6mm 5-8mm 8-10mm Al2O3:99.5%min Fe2O3:0.04%max Na2O:0.3%max   Size: -100MESH -150MESH -200MESH -320MESH   Al2O3:99.0%min Na2O:0.40%max Fe2O3:0.20%max Used for abrasives,blasting,grinding Size: ( FEPA )F8 F10 F12 F14 F16 F20 F22 F24 F30 F36 F40 F46 F54 F60 F70 F80 F90 F100 F120 F150 F180 F220 (JIS)  #8 #10 #12 #14 #16 #20 #24 #30 #36 #46 #54 #60 #70 #80 #90 #100 #120 #150 #180 #220 Al2O3:99.5%min Fe2O3:0.04%max Na2O:0.3%max   Used for abrasives ,lapping,Polishing Size:  (FEPA) F230 F240 F280 F320 F360 F400 F500 F600 F800 F1000 F1200 F1500 F2000 (JIS) #240 #280 #320 #360 #400 #500 #600 #700 #800 #1000 #1200 #1500 #2000 #2500 #3000 #4000 #6000 #8000 Al2O3:99.2-99.6% Fe2O3:0.02-0.08% Na2O:0.20-0.40%