... gravity:0.15-2.4g/cm3 Expanded perlite 1.Expanded Perlite size :Perlite filter aid : 30 ... 60mesh, 100mesh, 120mesh, 150mesh, 0.1-1mm, 0.5-1.5mm1-2mm, 2-4mm3-6mm 4-8mm ... 1.54-51-40.34.Perlite features : Poisonless,tasteless,staleless,nonconbustible,acid-resistant,alkali-resistant,Fireproofing,sound proofing ,light weight ,etc ... dilating agent in rubber,painter and plastice,etc.It can be used as catalyst in ...