Calcium carbonate is an inorganic chemical compound with the chemical formula CaCO3. Calcium carbonate, or CaCO3, makes up more than 4% of the earth’s crust and may be found all over the world. Its most prevalent natural forms are chalk, limestone, and marble, which are formed over millions of years by the sedimentation of the shells of minuscule fossilized snails, shellfish, and coral. Although all three forms are chemically equivalent, they differ in a variety of ways, including purity, whiteness, thickness, and homogeneity. Many of us first come into contact with calcium carbonates in the school classroom, where we utilize blackboard chalk. Chalk has been used as a writing instrument for over 10,000 years and is a fine, microcrystalline substance.
Calcium carbonate, as it is used for industrial purposes, is extracted by mining or quarrying. Pure calcium carbonate can be produced from marble, or it can be prepared by passing carbon dioxide into a solution of calcium hydroxide. In the later case calcium carbonate is derived from the mixture, forming a grade of product called “precipitated calcium carbonates,” or PCC. PCC has a very fine and controlled particle size, on the order of 2 microns in diameter, particularly useful in the production of paper. The other primary type of industrial product is “ground calcium carbonates,” or GCC. GCC, as the name implies, involves crushing and processing limestone to create a powdery-like form graded by size and other properties for many different industrial and pharmaceutical applications.
Application of Calcium Carbonate
- Calcium carbonates is largely employed in the pulp and paper industry. It can be used as a filter and pigment, making possible the production of a whiter, higher quality pigment than other minerals.
- In the construction industry, calcium carbonate is used as a filler in concrete, increasing its durability and appearance and to purify metals for use in construction applications.
- Another application of calcium carbonates is in fertilizers to provide calcium to plants and pH stabilization of the soil.
- Calcium carbonates can also be an additive to food products for livestock animals and humans and as a supplement in vitamins.
- In water and sewer treatment plants, calcium carbonate is employed in the removal of acidity and impurities.
Calcium Carbonate Uses
The list of uses of calcium carbonate is given below.
- It plays an important role in construction, be it as a building material (marble) or as an ingredient in cement.
- It is used in medicinal industries which manufacture antacids, tablets that are made of base materials, etc.
- It is used as a calcium supplement.
- It is used in the manufacture of paints, paper, plastics, etc.
Medicinal Uses of Calcium Carbonate
Calcium carbonate is a dietary supplement used when the amount of calcium taken in the diet is not enough. Calcium is needed by the body for healthy bones, muscles, nervous system, and heart. Calcium carbonates also is used as an antacid to relieve heartburn, acid indigestion, and upset stomach.
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