Method for improving chloride type salt pan production efficiency and chloride type salt pan product
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A production efficiency, chloride technology, applied in the field of salt fields, can solve problems such as low production efficiency
Inactive Publication Date: 2020-01-21
QINGHAI UNIV FOR NATITIES
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[0005] The purpose of the embodiments of the present application is to provide a method for improving the production efficiency of chloride-type salt
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Embodiment 1
[0076] In brine containing only potassium chloride and sodium chloride (concentration 0.5g / L, 2.3g / L), the evaporation efficiency of brine is at room temperature, refrigerator (-18℃), blast drying (35℃), drying (35℃) ) conditions were 0.1017kg / (m2·h), 0.010; kg / (m2·h), 0.749kg / (m2·h) and 0.05488kg / (m2·h), respectively. Compared with potassium chloride + sodium chloride + magnesium chloride (concentration 0.5g / L, 2.3g / L, 90g / L), potassium chloride + sodium chloride + half of magnesium chloride (concentration 0.5g / L, 2.3g / L) , 45g / L), potassium chloride + sodium chloride + more than half of magnesium chloride (concentration 0.5g / L, 2.3g / L, 135g / L), the evaporation efficiency is much higher. Therefore, the brine was treated under different experimental conditions to improve the evaporation efficiency.
[0077] At room temperature, in potassium chloride + sodium chloride + magnesium chloride (concentration 0.5g / L, 2.3g / L, 90g / L), potassium chloride + sodium chloride + less than h...
Embodiment 2
[0082] Under the condition of refrigerator (-18℃), in potassium chloride + sodium chloride + magnesium chloride (concentration 0.5g / L, 2.3g / L, 90g / L), potassium chloride + sodium chloride + less than half of magnesium chloride (concentration 0.5g / L) g / L, 2.3g / L, 45g / L), potassium chloride + sodium chloride + more than half of magnesium chloride brine (concentration 0.5g / L, 2.3g / L, 135g / L), then add Glauber's salt solution, Glauber's salt solution and The molar mass ratios of the original brine were 1:1, 2:1 and 3:1, respectively. The evaporation efficiency improvement ratio is shown in Table 2.
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Abstract
The invention relates to the field of salt pans, in particular to a method for improving the production efficiency of a chloride type salt pan and a chloride type salt pan product. According to the method, a mirabilite solution is firstly added into brine, so that magnesium ions in the brine are combined with sulfate radicals in mirabilite, the magnesium ions are separated out of the brine in theform of magnesium sulfate crystals, and the content of the magnesium ions in the brine is reduced; and then the residual brine with the reduced content of the magnesium ions is subjected to evaporation and sun treatment to obtain a salt pan product. According to the method, the magnesium ions in the brine are firstly reduced, and the magnesium salt does not need to be dried in the sun in the subsequent evaporation and salifying process, so that the salifying time is greatly shortened, and the production efficiency of the salt pan is improved. After magnesium ions are reduced, a potash fertilizer production route is changed from a bischofite route to a more energy-saving and simpler sylvine route, so that the process difficulty is greatly reduced.
Description
technical field [0001] The present application relates to the field of salt fields, in particular, to a method for improving the production efficiency of chloride-type salt fields and chloride-type salt field products. Background technique [0002] The Chaerhan Salt Lake is one of the rare large inland salt lakes with industrial value in the world. It is a comprehensive mineral deposit mainly composed of liquid potassium ore, coexisting of solid and liquid, and accompanied by useful elements such as boron, lithium, magnesium and bromine. . The total area of Qarhan Salt Lake is 5856km 2 , Chaerhan Salt Lake has extremely rich salt mineral resources such as potassium chloride, magnesium chloride and sodium chloride. Most of my country's potassium chloride resources are concentrated in the Chaerhan Salt Lake. Therefore, the development of the Chaerhan Salt Lake resources is of great significance for promoting my country's agricultural development. [0003] The salt field p...
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