What are the uses of building gypsum

Building gypsum is mainly used for building plastering, painting, masonry mortar and manufacturing various gypsum products;  High strength building gypsum is mainly used for higher requirements of plastering engineering, decorative products and gypsum board;  High strength building gypsum mixed with waterproof agent can also be made of high strength waterproof gypsum.  Add organic bonding material such as polyvinyl alcohol solution or synthetic resin emulsion.  Used to paint the surface of the interior walls of buildings.  There are three main uses of plaster: surface plastering anhydrite;  The bottom layer is painted plaster;  Insulation plastering anhydrite.  The initial setting time of plaster is not less than 1h, and the final setting time is not more than 8h.  The raw material of gypsum production is mainly natural gypsum containing calcium sulfate (also known as raw gypsum) or chemical by-products containing calcium sulfate and waste residues such as phosphogypsum, fluoropressum and boron gypsum.  Its chemical formula is CaSO4/2H2O, also known as hemihydrate gypsum.  Different kinds of gypsum can be obtained by calcination of natural dihydrate gypsum at different temperatures