1.Perlite ore 2.Size:5-325mesh1-8mm 3.Category:Raw perlite 4.Cast iron,cast steel 5.H. ... , 30-50mesh, 50-150mesh, 200-325 mesh 1-3mm 3-5mm 0.3-0.6mm 1-2.8mm 0.8-2.5mm ... ,0.3-1mm,2-4mm etc 2.Physical and Chemical Properties: ElementSiO2Al2O3 ... .2-1.4 900-1000 5-103.Raw perlite ore for foundry applications:Cast iron ,cast steel ,cast stainless steel ,cast ...