White Fused Alumina is made of high-quality alumina powder as raw material,which is refined and crystallized by electrofusion.Its hardness is slightly higher than that of brown fused alumina,its toughness is slightly lower.high purity,good self-sharpening,strong grinding ability,low calorific value,high efficiency,acid and alkali corrosion resistance,high temperature resistance and stable thermal performance. It is used to make abrasive tools ,suitable for grinding high-carbon steel,high-speed steel,stainless steel and other fine-grained abrasives, and can also be used for precision casting and advanced refractory materials. Main Physical Properties: Mohs Hardness 9.0 Bulk Density 1.75-1.95g/㎤ Real Denstiy 3.95g/㎤ Melting Point 2250℃ Maximum Service Temperature 1900℃ Application: 1.Brake linings 2.Surface treatment 3.Bonded and coated abrasives 4.Thermal and plasma spraying 5.Floor and wall laminate materials 6.Lapping and micromolecular spraying 7.Advanced refractory and ceramic materials Micro Powder Production Process 1.Semicolon precipitation 2.Vertical ball mill 3.Acid washing tank 4.Overflow tank 5.Hydraulic classification 6.Pressure controller Grit Production Process 1.Shaking sieve 2.Jaw crusher 3.Ball mill 4.Dust collector 5.Dumping furnace Chemical Composition(Used for refractory and castable) Properties Type 0-1mm,1-3mm,3-5mm 0-100,0-200,0-320 Guarantee Value Typical Value Guarantee Value Typical Value Chemical Composition Al₂O₃ ≥99% 99.50% ≥98.5% 99.00% Na₂O ≤0.4% 0.06% ≤0.3% 0.08% Fe₂O₃ ≤0.2% 0.04% ≤0.2% 0.10% SiO₂ ≤0.4% 0.30% ≤0.4% 0.35% Chemical Composition (Used for abrasive,blasting and grinding) Properties Type Grit 8#,10#,12#,14#,16#,20#,22#,24#,30#,36#,40#,46#, 54#,60#,70#,80#,90#,100#,120#,150#,180#,220# Guarantee Value Typical Value Chemical Composition Al₂O₃ ≥99% 99.50% Na₂O ≤0.2% 0.04% Fe₂O₃ ≤0.2% 0.04% SiO₂ ≤0.3% 0.23% Chemical Composition (Used for abrasive,lapping and polishing) Properties Type Micropowder "W" W63,W50,W40,W28,W20,W14,W10,W7,W3.5,W2.5 "FEPA" F230,F240,F280,F320,F360,F400, F500,F600,F800,F1000,F1500,F2000 "JIS" 240#,280#,320#,360#,400#,500#,600#,700#,800#,1000#, 1200#,1500#,2000#,2500#,3000#,4000#,6000#,8000# Chemical Composition Al₂O₃ ≥99% 99.20% Na₂O ≤0.4% 0.08% Fe₂O₃ ≤0.2% 0.06% SiO₂ ≤0.4% 0.35%