... materials in minerals metallurgy 20-500 microns Use:cement,oil drilling,powder coating Bulk density:0.7-0.9g/cc oil ... cenospheres can maintain their integrity while they are utilized in Water,organic chemicals acid,alkali and other solvents.4) High refractorinessCenospheres ... :Widdely used in building material,plastics,ceramic,oil field,beton,well drilling,paint&coating,automobile,air craft etc.