Calcination: The powdered gypsum is heated to eliminate h2o molecules, developing unique kinds of plaster dependant upon the temperature and duration of heating. Hydration of Anhydrite: Gypsum can also form throughout the hydration of anhydrite (CaSO₄). Anhydrite is really a calcium sulfate mineral that lacks the h2o molecules current in https://www.propanraya.com/id/produk/eco-gypsum-ee-4050