Natural gypsum generally includes dihydrate gypsum and anhydrous gypsum. In order to get the valuable materials, generally, we get semi-hydrated gypsum through heating the dihydrate gypsum.

Main Technology
Gypsum mine->first breaking->second breaking->grinding->calcining->aging->finished products (CaSO4.1 / 2H2O)
Raw Materials
Content of CaSO4.2h2o in gypsum mine 80%
The grade of mine and the crystal configuration will influence the quality of semi-hydrated gypsum