Salt is one of the most important minerals in the world. It has a wide range of application in the chemical and food processing industry. It is also used as a major de-icing agent for the maintenance of roads during winter.
Chemical production relies heavily on salt as well, as industrial salt is used as a filler for detergents and solvents, causing the chemical to be more rapidly dissolved in water. Since salt separates many of the components required for making soap, chemical industries include large amounts of industrial salt in the process of making soap.
Solar ponds and other energy-producing facilities require large amounts of salt to maintain a necessary salinity, adding to the application of industrial salt as an energy producer.
Since salt is relatively cheap, available in large quantities thus, salt come into increasing demand with increased availability of solar energy.