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Gypsum rock - PowerPoint PPT Presentation

GYPSUM

GYPSUM. GYPSUM. In nature : Gypsum Rock Pure gypsum rock : CaSO 4 .2H 2 O Impurities : MgO, Al 2 O 3 , Fe 2 O 3 , SiO 2 , CaCO 3 , MgCO 3 . PRODUCTION STEPS. Excavating Crushing ( ~ 25 mm diameter) Grinding Heating (calcining) Cooling and Pulverizing Marketing in Bags. CALCINATION.

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Gypsum rock - PowerPoint PPT Presentation

GYPSUM