High-strength gypsum powder

Gypsum is the main raw material for the production of gypsum and gypsum building products cementitious materials, as well as Portland cement retarder. Plaster after 600 ~ 800 ° C calcined catalyst such as adding a small amount of common ground lime, anhydrite binder can be obtained (also known as Kim binder); after 900 ~ 1000 ° C calcined and milled, it can get hot calcined gypsum . Gypsum obtained using these two products, the strength of higher construction gypsum products, and anhydrite binder has good insulation, high-temperature calcined gypsum has good abrasion resistance and water resistance.