How is sea salt dried?

At present, the drying method of sea salt is mainly "saltworks method". This method needs to choose a flat beach and build a salt field in an area with high temperature and plenty of sunshine. Yantian is generally divided into evaporation pool and crystallization pool.

When the spring tide comes every month, seawater is introduced into the evaporation pool of Yantian. When it is exposed to the sun and evaporated to a certain extent, it is introduced into the crystallization pool and continues to be exposed to the sun. With the increase of time, seawater gradually becomes a saturated solution of salt, and salt crystals will gradually precipitate after sun exposure. The crystal at this time is the original salt.

Extended data:

The origin of dried sea salt

The use of seawater to dry salt originated in Wudi County, Shandong Province in the Ming Dynasty. According to the scholars in Song Dynasty and Ming Dynasty, "Heavenly nature creates things. "Salt Making Five" records: "Haifeng directly introduces seawater into the pool to bask in the sun, and does not add manpower to sweep food when it condenses. Same as salt dissolution. But the time of salt formation is very different from not borrowing the south wind. "

Haifeng in the above records refers to Wudi County, Shandong Province in the Ming Dynasty. The name Emperor Wu first appeared in Zuo Zhuan in the Spring and Autumn Period. It was renamed Haifeng in the early Ming Dynasty, and was renamed Emperor Wu in 19 14.

"Dissolved salt" refers to the salt produced in Xiezhou, Shanxi Province. The quality of dissolved salt ranked first in China at that time, belonging to the category of "tribute salt". The quality of sea salt from Wudi beach is the same as that from Jiezhou tribute salt, which shows that Wudi salt-making technology has reached a high level.

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