Calcium is part of nearly everything around you.
Not only is it essential in our own body's growth and an agricultural super-agent, it is also a key building block in all the everyday items around us.
Calcium carbonate is critical to the construction industry, both as a building material in its own right and as an ingredient of cement. It contributes to the making of:
MORTAR BRICKS CONCRETE STONES SHINGLES RUBBER TILE GLASS
Calcium carbonate decomposes to form carbon dioxide and lime, an important material in making: STEEL, GLASS, and PAPER. It plays an important role as a reducing agent in the process of METAL extraction as well.
It is used as a filler in paper because they are cheaper than wood fiber. Printing and writing paper can contain 10-20% calcium carbonate. In North America, calcium carbonate has begun to replace kaolin in the production of glossy paper.
Because of its antacid properties, calcium carbonate is used in industrial settings to neutralize acidic conditions in both soil and water. Calcium carbonate also benefits the environment through water and waste treatment.
In the oil industry, calcium carbonate is added to drilling fluids as a formation-bridging and filter cake-sealing agent; it is also a weighting material which increases the density of drilling fluids to control the downhole pressure. Calcium carbonate is added to swimming pools as a pH corrector for maintaining alkalinity and offsetting the acidic properties of the disinfectant agent.
Calcium carbonate is widely used as an extender in paints, in particular matte emulsion paint where typically 30% of the weight of the paint is either chalk or marble. It is also a popular filler in plastics.
Polypropylene compounds are often filled with calcium carbonate to increase rigidity, a requirement that becomes important at high use temperatures.It is used in the production of some metals, and acts as an allying agent.