Alfa alçı α;
The chemical structure of alpha gypsum (CaSO4 + 1 / 2H2O) is the same as the beta plaster. There are differences in crystal structure resulting from the production process. For the production of alpha plaster high pressure autoclave kiln is used. Autoclave is a word of Greek origin and means self-locking. It has a variety of uses in industries.
Ytong production and the sterilization of food is only two usage place of these type kilns. Alpha plaster is produced from gypsum in the autoclave under high vapor pressure