Preparation technology of solar salt

Abstract

The invention relates to a preparation technology of salt, in particular to a preparation technology of solar salt. The preparation technology of the solar salt comprises the specific steps of 1, making saturated brine from seawater, and transporting the saturated brine to a purifying pond through a pipeline for filtration and purification so as to filter off biological dead bodies, plant residual bodies, atmospheric dust fall and the like in the saturated brine; 2, adding the purified pure brine into a crystallization pond, controlling the depth of water in the crystallization pond to be 5-10cm, and during sun-curing, performing salt spinning and brine spinning with a rotary rake; 3, when the sodium-magnesium ratio of the brine is smaller than or equal to 2, stopping crystallization; 4, when the particles of the salt reach to 0.5-2.0mm and the evaporation amount of the salt reaches to 7mm, collecting the salt, when the salt needs to be collected, gathering the salt into heaps through cleaning tools, washing the salt with cleaning brine, then performing vacuum suction filtration and dehalogenation on the salt, and when the water content of the salt is smaller than or equal to 5.4%, stopping the operations of vacuum suction filtration and dehalogenation; and 5, preserving the obtained solar salt, packaging the preserved solar salt, and enabling the packaged solar salt to appear on the market.

Description

technical field [0001] The invention relates to a preparation process of salt, in particular to a preparation process of sun-dried salt. Background technique [0002] Sun-dried salt is made of groundwater, which is evaporated in the sun by using a special production process. It has the characteristics of white color, uniform particle size, low impurity, and easy dissolution. As far as the process is concerned, the yield and quality of sun-dried salt have been greatly improved after years of practice, but it is still not stable enough. [0003] There are also uneven particle sizes, large and small, and the quality of the sun-dried granular salt is difficult to control, and the production process is complicated, and the labor intensity of the workers is high. Contents of the invention [0004] In view of the deficiencies in the prior art, the present invention provides a preparation process for solar salt. The solar salt produced by it has controllable particles, natural an...

AI Technical Summary

Problems solved by technology

As far as the process is concerned, the yield and quality of sun-dried salt have been greatly improved after years of practice, but it is still not stable enough.

[0003] There are also uneven particle sizes, large and small, and the quality of sun-dried granular salt is difficult to control, and the production process is complicated, and the labor intensity of workers is high.

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