The refining of table salt is a process with a long history and full of wisdom. Since ancient times, it has been known that salt is found in seawater, salt mines, and certain soils. However, to convert it into edible table salt, it needs to go through a series of delicate processes.
First of all, in the case of seawater, salt farmers use sunlight and wind to concentrate seawater into highly salinity brine by evaporation. This process continues for several days until the concentration of the brine is high enough to precipitate salt crystals.
Secondly, in the case of salt mines, people would dig out the ore containing salt and grind it into powder. Next, the water is removed by heating, and finally it is cooled and crystallized to obtain table salt.
In addition, the soil in some places also contains a small amount of salt. Salt can also be extracted by collecting saline soil, dissolving it with water, heating and evaporating it, and cooling it for crystallization.
It is worth mentioning that the development of modern science and technology has provided more choices and convenience for the refining of table salt. For example, membrane separation technology can extract table salt from seawater, while ion exchange technology can extract purer table salt from salt mines.
Overall, the refining of table salt is a process that is both ancient and modern. It not only embodies the greatness of human wisdom, but also provides us with an indispensable spice in life. Whether it's extracted from seawater, salt mines or soil, the ultimate goal is to satisfy people's appetite for deliciousness and health. Autumn and Winter Check-in Challenge