Current location - Recipe Complete Network - Diet recipes - What are the main components of plaster of Paris?
What are the main components of plaster of Paris?

calcium sulfate.

Gypsum Fibrosum is a building material based on calcium sulfate. Its preparation method is to mix gypsum with water and then heat it to 15 C. Plaster is a common material on the inner wall and ceiling surface of cathedral buildings in Europe, and it is usually painted with wet murals.

plaster of Paris is monoclinic. The crystal is microscopic needle-like, gypsum-like, and also massive. Colorless or white. Stripes are white. Glassy luster. Opaque. The hardness is about 2, and the density is 2.55 ~ 2.67 g/cm 3. It is produced in the oxidation zone of lead-zinc mine, gypsum claystone in salt lake and blowhole of extrusive rock.

Extended information:

Application of plaster of Paris: it can be used as polishing powder, paper filler, gas desiccant and medical plaster bandage, and also used in metallurgy and agriculture. Cement plants also use gypsum to adjust the setting time of cement.

gypsum deposits are mainly sedimentary deposits, accounting for more than 9% of the country's reserves, while epigenetic and hydrothermal metasomatic gypsum deposits are not very important. Gypsum mines have been produced in various geological ages, with the early Cretaceous and tertiary sedimentary gypsum mines as the most important. It is mainly the product of chemical deposition, and often forms a huge seam or lens, which occurs in limestone, red shale and? Sandstone? , marl and clay rock series, often with anhydrite, halite, etc.

Baidu encyclopedia-burned plaster

Baidu encyclopedia-? plaster