Method for treating gallium electrolysis tail liquid

A treatment method and tail liquid technology, applied in the field of electrolysis tail liquid treatment, can solve problems such as affecting the electrolysis efficiency and product quality, the electrolysis process cannot be carried out normally, affecting the leaching and freezing effects, etc., and achieve good economic and environmental benefits, The effect of good electrolysis and easy implementation

Inactive Publication Date: 2014-08-20
ZHUHAI SEZ FANGYUAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If Na in the system solution 2 SO 4 High content will cause Na to appear in freezing tank, pipeline and electrolyzer 2 SO 4 , affect the effect of washing and freezing, make the electrolysis process cannot be carried out normally, and affect the electrolysis efficiency and product quality

Method used

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  • Method for treating gallium electrolysis tail liquid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] When the NaOH concentration is 225g / L, Na 2 SO 4 Add 500kg of solid sodium hydroxide to the 2.5m3 gallium electrolytic tail liquid with a concentration of 27g / L, stir and dissolve, and form NaOH with a concentration of 420g / L after filtration, NaOH 2 SO 4 Concentration is 2.2m3 of lye of 6.3g / L. The lye is returned to prepare the eluent and continue to be used to extract gallium. The subsequent processes run stably and the electrolysis is normal.

Embodiment 2

[0026] When the NaOH concentration is 240g / L, Na 2 SO 4 Add 500kg of solid sodium hydroxide to the 2.0m3 gallium electrolytic tail liquid with a concentration of 32g / L, stir and dissolve, and form NaOH with a concentration of 485g / L after filtration. 2 SO 4 Concentration of 3.1g / L lye 1.8m3, this lye is returned to prepare the eluent, and the process of gallium extraction is continued. The subsequent processes run stably and the electrolysis is normal.

Embodiment 3

[0028] When the NaOH concentration is 230g / L, Na 2 SO 4 Add 510kg of solid sodium hydroxide to the 2.2m3 electrolytic tail liquid with a concentration of 35g / L, stir and dissolve, and form NaOH with a concentration of 460g / L after filtration. 2 SO 4 Concentration of 4.5g / L lye 2.0m3, this lye was prepared as a eluent, and the process of gallium extraction was continued. The subsequent processes were stable and the electrolysis was normal.

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Abstract

The invention discloses a method for treating a gallium electrolysis tail liquid. The gallium electrolysis tail liquid is an electrolysis tail liquid produced in a gallium extraction process by adopting a resin method; in the resin method, leacheate is prepared from NaOH and Na2S, and the method for treating the gallium electrolysis tail liquid comprises the following steps: after electrolysis, adding solid sodium hydroxide into the electrolysis tail liquid until NaOH content in the electrolysis tail liquid is more than or equal to 400g/L; after Na2SO4 in the electrolysis tail liquid is separated out in a precipitate form, filtering, and returning filtrate for preparing the leacheate. The method for treating the gallium electrolysis tail liquid has the advantages that the normal leaching and electrolysis are guaranteed, a normal gallium extraction technological process is further guaranteed, electrolysis condition is good, the usage amount of NaOH in production is reduced, recycling of the electrolysis tail liquid is realized, and no electrolysis tail liquid is discharged; and the technological process is simple, has high operability and can be carried out very easily.

Description

technical field [0001] The invention relates to a treatment method for gallium electrolysis tail liquid, in particular to a treatment method for electrolysis tail liquid in the process of extracting gallium from seed mother liquor by resin adsorption. Background technique [0002] In the process of extracting gallium from the mother liquor by resin adsorption, the resin is first used to absorb gallium from the mother liquor, and then NaOH and Na 2 The eluent prepared by S elutes gallium from the resin to form a gallium enrichment solution; the gallium enrichment solution is evaporated, filtered, oxidized and other processes to form an electrolytic stock solution, and finally metal gallium is obtained through electrolysis, and an electrolytic tail is also generated. liquid. For the treatment of electrolytic tail liquid, the factory usually uses one-third of the electrolytic tail liquid to prepare eluent, and discharges the other two-thirds. At present, the NaOH content in ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25C1/22C25C7/06C22B3/20
CPCY02P10/20
Inventor 贾立炳黄安平陈增杰
Owner ZHUHAI SEZ FANGYUAN
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