A Tail Salt Magnesium Removal Device
A technology of tailing salt and storage tank, which is applied in the production field of high-purity magnesium hydroxide produced by caustic soda, which can solve the problems of containing, poor treatment effect, and affecting normal production, etc., and achieves good treatment effect, fast and efficient operation
Active Publication Date: 2018-01-05
QINGHAI SALT LAKE IND
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Problems solved by technology
[0006] The purpose of the present invention is to provide a tail salt magnesium removal device, which is used to solve the problem that in the existing continuous production process of sodium hydroxide and magnesium hydroxide, the sodium chloride solution recovered from the magnesium hydroxide production device will contain magnesium chloride and Magnesium hydroxide, using existing methods to deal with poor effect and will seriously affect the problem of normal production
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[0037] The present invention provides many applicable inventive concepts that can be embodied in numerous specific contexts. The specific examples described in the following embodiments of the present invention are only used as illustrations of specific embodiments of the present invention, and are not intended to limit the scope of the present invention.
[0038] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0039] This embodiment provides a tail salt magnesium removal device, comprising a baffle tank 1, a reaction tank 2, a coagulation tank 3, a sedimentation tank 4, an intermediate pool 5, a filter 6 and a clear water tank 7 arranged in sequence, wherein the folding The launder 1 is connected to the hydrochloric acid storage tank 8, the reaction tank 2 is connected to the sodium hydroxide storage tank 9, the coagulation tank 3 is connected to the flocculant storage tank 10, and between the rea...
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The invention discloses a tail salt magnesium removal device which comprises a baffling gutter, a reaction tank, a flocculation tank, a sedimentation tank, a middle water tank, a filter and a clean water tank which are arranged in turn, wherein the baffling gutter is connected with a hydrochloric acid storage tank, the reaction tank is connected with a sodium hydroxide storage tank, the flocculation tank is connected with a flocculant storage tank, an electric floating reactor is arranged between the reaction tank and the flocculation tank, and a first turbidity meter is arranged between the sedimentation tank and the middle water tank. By use of the tail salt magnesium removal device, the content of the magnesium ions in the treated sodium chloride solution can conform to the requirement of the sodium chloride solution to be electrolyzed in the sodium hydroxide preparation process. The tail salt magnesium removal device is applied to the continuous production process of sodium hydroxide-magnesium hydroxide, the treatment effect is good, continuous treatment can be carried out, and the operation is rapid and efficient.
Description
technical field [0001] The invention relates to the technical field of producing high-purity magnesium hydroxide from caustic soda, in particular to a device for removing residual tiny suspended magnesium hydroxide crystals and magnesium chloride in a by-product sodium chloride solution. Background technique [0002] When using sodium hydroxide to produce high-purity magnesium hydroxide, the reaction by-product sodium chloride solution must be returned to the caustic soda workshop for electrolysis and reuse to continue to produce sodium hydroxide. The specific reaction equation of the production process is: [0003] 2NaCl+2H 2 O→2NaOH+Cl 2 ↑+H 2 ↑, [0004] 2NaOH+MgCl→Mg(OH) 2 ↓+2NaCl. [0005] However, the sodium chloride solution to be electrolyzed will contain most of the incompletely reacted magnesium chloride and a small amount of magnesium hydroxide crystals. If the recovered sodium chloride solution is electrolyzed and reused, all the There are strict regulation...
Claims
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IPC IPC(8): C01D3/16
CPCC01D3/16
Inventor 张成玉常喜斌刘红金王冀锋何明靖张丽丽赵希文
Owner QINGHAI SALT LAKE IND