... .65-1mm,1-2mm 2-4mm,1-3mm,0.3-1mm,3-6mm,4-8mm200mesh 325mesh 20-40mesh 40-60mesh 60 ... %maxExpanded silver vermiculite size : Vermiculite gradeVermiculite sizeBulk densityImpuritySuper fine0.3-1mm 20-40mesh 40-70mesh 70-100mesh120-150kgs/m32%maxFine1 ... FoundriesGood thermal insulation, low density and its natural refractory properties combine with ease of application to make vermiculite a highly suitable ...