Fine calcined alumina powder

Calcined alumina A white powder, uniform in grain size, low in moisture, stable in chemical performance. Used as raw materials for aluminous refractory, ceramic products, sparking plugs and grinding materials. It is the basic material for aluminous refractory and high quality fillers with strong fire-retardant performance. Al2O3 %a-Al2O3 %SiO2 %Fe2O3Na2O % %Particle Size %≤2umD50um≥99≥92.0≤0.06≤0.03≤0.30≥90≥0.60≥99≥92.0≤0.06≤0.03≤0.30≥85≥0.80