The production process of building gypsum powder

Gypsum into gypsum and anhydrite. Building gypsum from two natural gypsum calcination temperature or chemical gypsum after heating to certain, two water gypsum dehydration decomposition, grinding to obtain semi hydrated gypsum as the main component of the product beta hemihydrate gypsum, gypsum (or is customarily called plaster). The production of building gypsum products are mainly the kiln, grinding machine etc. Beta hemihydrate gypsum is the main form of building gypsum and its production process can be summarized as plaster stone crushing, calcination, grinding the three processes.

First of all, the use of gypsum ore jaw crusher, counterattack crusher to 30 mm, transported to the mill for grinding. The input into the rotary kiln calcination by gypsum powder selecting machine grinding to the required product fineness, does not comply with the will return to the mill for grinding to comply with the particle size of the product after calcination. It is a main equipment of beta hemihydrate gypsum building plaster production are: jaw crusher, impact crusher, grinder, milling machine is selected according to the requirements of different fineness and the choice of. 0 - 3MM thick powder, the European version of the coarse grinding; 80-400 mesh fine powder with MTW European version of roller mill and vertical mill; ultrafine powder 400-3250 mesh HGM tricyclic ultrafine mill and ultrafine LUM vertical milling machine. Building gypsum production in order to be able to stable production of calcined gypsum in different grade, the average field pre equalization. Then the gypsum by feeder evenly feeding jaw crusher, crushing into 10-25mm particle size, and then by the crusher for crushing, a bucket type lifting machine, hopper, feeder into the rotary kiln dried ground. Through building gypsum powder product processing broken grinding calcined production line processing quality, due to the low temperature heat source, gypsum is not easy to burn, as long as the control of the material temperature appropriate, product does not contain two water gypsum, anhydrite and only less than 5%, the rest are semi hydrated gypsum. This composition is very ideal, stable physical property, the construction industry has been in the production of various regions in the gypsum board production.