Brief introduction

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

The working process is as following:

CaSO₄·2H₂O heating   CaSO₄·1/2H₂O+3/2 H₂O↑

The calcined semi-hydrated gypsum can widely be used for plasterboard, decoration gypsum board, gypsum block, stucco gypsum, and molding gypsum etc.

Main technology 

 Calcining furance craft (grinding first, calcine second)

Gypsum-mine→breaking→grinding→calcining→aging→finished-products (CaSO₄·1/2H₂O)