A rather important feature that fields of salt use need to pay special attention to is that the sea salt production process is typical of outdoor agriculture, mainly exploiting using natural factors: sunshine, wind. , area for drying water, ventilated, not shielded.
Although at the end of the production process, the granular salt that crystallizes on the canvas (instead of crystallizing salt on the ground) is also affected by many impurities in the air and the environment brought by wind. Therefore, the crystalline salt on the canvas is bright white in color but still contains many impurities.
Therefore, depending on the field and the needs of use, it is necessary to have an appropriate choice; Especially the salt used in foods that need to be processed, treat impurities, moisture and related factors such as NaCl, Mg2 +, Ca2 +, SO42-, moisture, and particle size.
In Vietnam, there are many salt processing factories, mainly processing from raw grain salt to refined salt products .. |