( Calcium Carbonate ( gypsum, limestone, calcite, aragonite and marble

Calcium carbonate is known as gypsum, limestone, calcite, aragonite and marble. The chemical formula of calcium carbonate CaCO3, its appearance is pure powder white and its cream is whitish cream. The density of calcium carbonate decomposes from 2.71 to 2.83 g / cm2 at 825 C. It has a linear molecular shape and is non-flammable. Applications of Calcium Carbonate Paint Industry: In this industry, micronized powder is used as a filler. The specifications of the powder used in this industry are as follows: Cao content more than 97% and Fe2O3 content less than 1% and its grading more than 500 mesh. Approximately 22% of the consumption of micronized powder in the Iranian paint industry is considered. Cable and Wire Industry: Micronized powder is used for strength and as a filler in the amount of 20% for cable production and 10% for wire production. The specifications of the powder used should have a purity of 98%, a moisture content of less than 1% and a grain size of about 350 mesh. Plastics and Rubber Industry: Micronized powder is used in this industry as a filler and product resistance to heat and strength. The specifications of micronized powder in this industry are such that the amount of CaO is at least 98%, the amount of moisture is at most 1%, the amount of Fe2O3 is at most 2%, and the pH is 8.5 to 9.5%. Food and Pharmaceutical Industry: In these industries, micronized powder is used as a filler and production of antibiotics, antacids, dentistry and is used with 100% purity for the production of cosmetics and as a filler. Paper Industry: The precipitated calcium carbonate is used as a turbidizer, smoother, filler and also to prevent the ink from spreading on the paper. Detergent Industry: In this industry, micronized powder is used to prepare bleaching materials with special and soft size. Oil Drilling industry: In drilling oil wells and in drilling fluid compositions, micronized powder with 85% purity and 325 mesh is used.