Salt pan technology for separating ingredients by temperature differences

Abstract

The invention relates to the technical field of salt lake chemical engineering of inorganic chemical industry, and discloses a salt pan technology for separating ingredients by temperature differences. The salt pan technology comprises a temperature difference salt pan and a storage pool, wherein a system water inlet is formed in one side of the temperature difference salt pan; a water dischargingopening is formed in one side, far away from the system water inlet, of the temperature difference salt pan; the water discharging opening is communicated with the storage pool; a pump pool is arranged inside the storage pool; a water pump communicating with the temperature difference salt pan is arranged inside the pump pool; a system water outlet is formed in one side of the storage pool. The salt pan technology for separating ingredients by temperature differences and application have the advantages that for a hot solution after solid separation, pure solids are separated out in the cooling process by adding a proper amount of fresh water; the solids can be favorably and further purified; pure solids are beneficial for preparation of other salts (such as preparation of potassium sulphate from high-quality picromerite, preparation of potassium chloride and magnesium metal from high-purity salt pan carnallite, and preparation of potassium sulphate from high-purity magnesium sulfate heptahydrate).

Description

technical field [0001] The invention relates to the technical field of salt lake chemical industry in inorganic chemical industry, in particular to a salt field technology for separating components by temperature difference. Background technique [0002] Salt refers to a class of compounds in which metal ions or ammonium ions (NH4+) are combined with acid ions or non-metal ions. Such as sodium chloride, calcium nitrate, ferrous sulfate and ammonium acetate, etc., such as calcium sulfate, copper chloride, sodium acetate, generally speaking, salt is the product of metathesis reaction, salt and salt react to form new salt and new salt, salt React with alkali to generate new salt and new base, salt and acid react to generate new salt and new acid, such as sulfuric acid and sodium hydroxide to generate sodium sulfate and water, sodium chloride and silver nitrate to generate silver chloride and sodium nitrate, etc. There are also other reactions that form salts, such as displacem...

AI Technical Summary

Problems solved by technology

[0004] Salt pan is an important place needed for salt production. At present, the sun-dried salt pan on the salt lake uses the existing simple salt pan: use sun-dried to make the target minerals in the brine of the salt lake change from unsaturated to saturated, then precipitate the target minerals, and recover the target minerals Utilization, from the point of view of the purity of the target minerals, the target mineral impurity content of the simple salt field drying is more difficult for subsequent processing. From the perspective of the salt field utilization season, the simple salt field only uses part of the Spring Festival, the whole summer, part of the autumn sun evaporation, and no winter Therefore, the efficiency of salt fields needs to be improved. In terms of the degree of brine drying, simple salt fields only perform simple primary sun drying, while in the middle and late stages of sun drying, it is more difficult for brine to evaporate naturally, and the goal of remaining in brine at this time Minerals, because the content has not yet reached the predicted value, it is difficult to be recycled

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