Salt which is so extensively used in our foods is essential not only to human beings but also to plants and animals. It is not only used as a seasoning in our dishes it is also used as a preservative. It has played an essential role in our lives. An evidence of this is that in some place it was used as a form of currency. History is also replete to in cidents related to salt. In India the Gandhi’s Dandi march which defied the British salt laws has gone down the annals of India’s freedom movement as a decisive event.
Manufacturing Process
Salt is manufactured using any of the three methods viz. mining, solar evaporation, and vacuum evaporation.
Solar Evaporation: Salt is also obtained by evaporating sea water or brine in shallow basins by sunlight and wind. When the water evaporates, a salt bed forms at the bottom of the basin. This salt is then collected, cleaned and then packed.
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