... ,60-90mesh,60-120mesh,50-150mesh C/O,SGS Expanded Perlite and Perlite Oresize:8-12mesh ,12-18mesh ,18-20mesh ,20-50mesh ... ) can be as insulation, thermal insulation material widely used in construction. (2) can be used as a cover agent deslagging agents. (3 ... -2.5 0.1-1 1-3 3-5mmType: Expanded Perlite and Perlite oreApplication: building ,horticulture, filter aid...SiO2 Content (%): 69-75 ...