Process exit fire grade vermiculite powder vermiculite SLATE fire door

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insulation vermiculite
Vermiculite is the general name of unexpanded vermiculite.Vermiculite through excavation,mining, remove the impurities, the
appearance is flake, so called vermiculite, vermiculite, vermiculite, raw vermiculite, vermiculite, vermiculite, not expanded, not
foamed vermiculite.Its chemical formula is: (Mg, Ca) 0.3 0.45 (H2O) n {(Mg, Fe3, Al) 3/4 o12 (Si, Al) (OH) 2}.