? Salt from Qinghai Lake cannot be consumed directly.

Because it contains minerals in the salt crystals, which make the salt crystals greenish-black in color, and the salt grains are large and pure, and the salt tastes mellow and fragrant, which makes it an ideal edible salt. However, it contains a variety of impurities, such as sediment, gypsum and mannite, which are undesirable in edible salt. Therefore, salt from Qinghai Lake needs to be refined or purified to become edible salt.

The salt from Qinghai Lake is coarse salt, which is crystallized from seawater or brine from salt wells, salt ponds and salt springs by decoction and sunlight, i.e., natural salt, which is unprocessed, large-grained salt with the main ingredient of sodium chloride, but because it contains impurities such as magnesium chloride, it is more prone to deliquescence in the air, so attention should be paid to humidity when it is stored.

China's sea salt production methods

Sun-drying method, also known as the beach sun-drying method, is the use of coastal mudflats, damming salt fields, through the tide of water, attracting seawater into the pool, after the sun evaporation into brine. When the brine concentration evaporation reaches 25 degrees boe, precipitation of sodium chloride, that is, the original salt. Sunshine method of production of raw salt, the process is generally divided into four major processes: natatorium, brine, crystallization, salt collection.

After the production of sea salt is completed, the heap is collected manually or mechanically. In order to maintain the unique characteristics of its sea salt, Tianjin Hangu Salt Farm adopts the only domestic salt field saturated brine vacuum salt production process, which maximizes the retention of seawater calcium, potassium, magnesium and other beneficial elements. When the raw brine enters the production system, it undergoes a dozen of processes such as yarn filtration, membrane filtration, evaporation, crystallization, separation, etc., and the final product is formed.