Gypsum has many uses in the construction industry, the medical industry, the agricultural industry and the paper industry.
| 1 | Country of Origin | Iran |
|---|---|---|
| 2 | Size | Lump size, Crush size, powder size |
| 3 | Packing | Big bags, loose bulk, pallet, ۲۰~۳۰ Kgs bag |
| 4 | Producer | Arian Tejarat Nik Andish Company |
Gypsum is a natural or abnormal hydrated calcium sulfate mineral that is found in several crystalline forms. Gypsum is present in the earth's solid crust deposits and the earth's liquid layer. Gypsum is one of the oldest building materials used in the world.
Gypsum is naturally white in color and may appear gray, bluish gray, pink, or beige due to impurities of organic clay and iron oxide. Gypsum has a monoclinic crystallization system. Gypsum has a specific gravity of 2.2 and a hardness of 2. Gypsum dissolves in hydrochloric acid and hot water. Pure gypsum contains 20 to 21% of mixed water, 46.6% of SO3 and 32.5% of CaO. The purity of gypsum is defined based on the percentage of gypsum mineral in it. After extracting gypsum from the mine, gypsum is taken to a furnace and heated to a temperature of about 180 degrees Celsius to lose some of its crystalline water molecules and become gypsum that can be used as a building material and gypsums molding.
Gypsum is chemically classified into two groups:
1. Hydrated gypsum (dehydrate gypsum) with chemical formula CASO4 2H2O
2. Waterless gypsum (anhydrate gypsum) with chemical formula CASO4
Gypsum are divided into two groups according to the type of usage: industrial plasters and construction plasters.
Industrial gypsum is divided into two groups: alpha gypsum and beta gypsum. In the alpha gypsum group, medical industry gypsum is usually found, and in the beta gypsum group, there is construction industry gypsum.
Gypsum has many uses in the construction industry, medical industry, agricultural industry and paper industry.
Plasters are widely used to cover the interior walls of buildings.
Another important application of gypsum is in the production of cement.
Alabaster gypsum is used as the most special decorative stone of the building due to the passage of light color spectra. Alabaster gypsum has fine-grained masses that are dense, greasy, colorless or white. Light transmission is one of the main features of Alabaster gypsum.
Plaster is very useful in medicine to protect and support broken bones. Major uses of gypsum in the medical industry include artificial prostheses, orthopedics and the production of gypsum bandages. Gypsum used in the medical industry must have a minimum purity of 96%.
Types of medical plasters include: orthopedic plaster, fiberglass or plastic plaster, dental plaster and Paris plaster
Gypsum is used in the paper industry as a filler.
In the agricultural industry, raw or so-called uncooked gypsum is used, which must be free of any salinity or lime. It must also have other characteristics such as low magnesium, coarse particles and the percentage of hydrated calcium sulfate.
Gypsum used in the industry of calcium sulfate production must have a minimum purity of 85-90%.
