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Continuous ion exchange device and method for removing boron from salt lake magnesium chloride brine

A technology of continuous ion and exchange device, applied in the direction of improving process efficiency, to achieve the effect of high degree of automation, stable product concentration and saving consumption

Active Publication Date: 2012-10-03
SUNRESIN NEW METERIALS CO LTD XIAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Combining the chelating resin adsorption boron removal process with the continuous ion exchange device not only solves the technical problem of boron removal from magnesium chloride brine in salt lakes, but also improves the utilization efficiency and utilization rate of the resin through the continuous ion exchange device, reducing material consumption and product loss. Production cost, so as to realize the industrial production of magnesium chloride after removing boron from salt lake brine

Method used

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  • Continuous ion exchange device and method for removing boron from salt lake magnesium chloride brine
  • Continuous ion exchange device and method for removing boron from salt lake magnesium chloride brine
  • Continuous ion exchange device and method for removing boron from salt lake magnesium chloride brine

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Embodiment 1

[0106] As shown in Table 1, the continuous ion exchange extraction process of the present invention for removing boron from salt lake magnesium chloride brine adopts continuous ion exchange equipment to remove boron from salt lake magnesium chloride brine, and adopts a series continuous operation mode. (Numbers represent different resin columns)

[0107] Table 1: Functional step-by-step operation table of different regions of the resin column

[0108]

[0109] The method described in this embodiment includes the following steps:

[0110] The resin of the resin column is seplite LSC-100 (Xi'an Lanxiao Technology New Material Co., Ltd.), and the boron content in the brine is 294ppm.

[0111] As shown in Table 1, each resin column is in the following different resin column groups, taking step number (1) as an example:

[0112] 1#, 2# column: desorption group 3# column: eluting group

[0113] 4#, 5#, 6# columns: brine adsorption boron removal group 7#, 8# columns: material t...

Embodiment 2

[0123] The method described in this embodiment includes the following steps:

[0124] The resin of the resin column is seplite LSC-800 (Xi'an Lanxiao Technology New Material Co., Ltd.), and the boron content in the brine is 60ppm.

[0125] As shown in Table 1, each resin column is in the following different resin column groups, taking step number (3) as an example:

[0126] 3#, 4# column: desorption group 5# column: eluting group

[0127] 6#, 7#, 8# column: brine adsorption boron removal group 9#, 10# column: material top water group

[0128] 1#, 2# column: recoil group

[0129] 6#, 7#, 8# columns: brine adsorption boron removal group. 6#, 7#, and 8# columns operate in series in forward flow, and the salt lake brine enters the brine feed branch pipe at the top of the 6# column from the brine feed main pipe, passes through the 7# column and 8# column in turn through the series pipeline, and finally The brine discharge branch pipe from the lower port of the 8# column enters ...

Embodiment 3-16

[0137] The difference with embodiment 1 is:

[0138] Carry out comparative experiments under different speed and temperature conditions of the brine adsorption boron removal group:

[0139] The resin of the resin column is sepliteLSC-500 (Xi'an Lanxiao Technology New Materials Co., Ltd.).

[0140] name

[0141] name

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Abstract

The invention discloses a continuous ion exchange device and method for removing boron from salt lake magnesium chloride brine. The device comprises resin, a plurality of resin columns used for loading the resin, a feeding header pipe and a discharging header pipe, wherein the feeding header pipe is communicated with the upper end of the same resin column; the discharging header pipe is communicated with the lower end of the same resin column; the resin columns are successively connected in series by a serial pipeline; a brine adsorption boron removal group, a leaching group, a desorption group, a back-washing group and a material top water group which are moved and circularly operated in sequence are formed therebetween; and each feeding branch pipe and each discharging branch pipe are respectively provided with a control valve used for harmoniously controlling all groups of resin columns to realize ion exchanging, leaching and desorbing processes in turn. Compared with the prior art, the continuous ion exchange device disclosed by the invention is simple, is convenient to operate, and has the advantages of high automation degree, small resin use amount, high use ratio, stable product concentration and high concentration of qualified liquid.

Description

technical field [0001] The invention relates to a continuous ion exchange device, in particular to a continuous ion exchange device for removing boron from magnesium chloride brine in a salt lake, and also relates to a continuous ion exchange method for removing boron from magnesium chloride brine in a salt lake by using the device. Background technique [0002] After the potassium salt is extracted from salt lake brine, a large amount of brine is produced as a by-product, that is, magnesium chloride solution, which is an important raw material for the production of metal magnesium. For every ton of potassium chloride produced, 10 tons of bischofite (magnesium chloride containing six waters of crystallization) are produced. Bischofite is a chemical raw material, which can produce many kinds of downstream products, such as magnesium oxide, high-purity magnesium products, carnasite, etc. For example, magnesium chloride extracted from salt lake brine is used as raw material to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B3/24
CPCY02P10/20
Inventor 寇晓康郭福民王程王日升陈绍添王刚刘琼
Owner SUNRESIN NEW METERIALS CO LTD XIAN
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