... 20-500 microns Use:cement,oil drilling,powder coating Bulk density:0.7-0.9g/cc oil drilling materials cenosphere fly ash(thermal ... cc) in minerals and metallurgy 1. Specifications:Grade No.: TX Grade TS Grade TS-F Grade Al2O327%min.35-45%(typically 39%)35- ... .3. Applications:Widdely used in building material,plastics,ceramic,oil field,beton,well drilling,paint&coating,automobile,air craft etc.