Product Description

When heating and calcining the dihydrate gypsum or chemical gypsum (phosphor gypsum, desulphurization plaster, fluor gypsum), the dihydrate gypsum will be decomposed we can produce the semi-hydrated gypsum (CaSO4•1/2H2O) which is building gypsum or plaster of paris. Because of the different temperature and pressure when decomposing the gypsum, we can get different product, α-type gypsum and β-type gypsum.α-type gypsum is high-strength gypsum, β-type gypsum is building gypsum. The mechanization producing process and technical of building gypsum is basically the same. The process can be divided into three systems, crashing system, calcining system and milling system. Jaw crusher, Roll crusher, Impact crusher, Percussive mill, Central roller mill and Hammer Breakers can be used as crusher. The calcine system can use continued or discontinued rotary kiln. The continued or discontinued revolving kiln continued and discontinued vertical cooker, hot oil boiler, tray dryer and so on. Calcining after milling and milling after calcining are the two main technic. We can choose Raymond mill, Vertical mill, Cone mill, Peters mill as the grinding equipment. We can supply full complete set of service according to customer’s desire, from the machine design, working room design, produce supply, setting up until the required products are produced.