Clarification method for gallium purification electrolysis waste solution

A technology for electrolytic waste liquid and purification treatment, which is applied in chemical instruments and methods, water/sewage treatment, water/sludge/sewage treatment, etc. It can solve problems such as increased alkali consumption in production, complicated process operation, and increased impurity content. Achieve the effect of reducing alkali consumption, simplifying production process and improving production efficiency
CN100572294CActive Publication Date: 2009-12-23GUIZHOU BRANCH CHINA ALUMINUM IND
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
GUIZHOU BRANCH CHINA ALUMINUM IND
Publication Date
2009-12-23
Patent Text Reader

Abstract

The invention relates to a purification treatment method for purifying gallium from waste electrolyte, which is characterized in that the treatment process comprises that: the electrolyte is filtered to remove floating slag and passive film of the electrolyte, the electrolyte to be purified is used as an electrolysis medium to electrolyze an insoluble anode, thus precipitating and eliminating impurities and Ga, and the purified electrolyte can be sent back to be reused. On the one hand, the purification and treatment method for purifying gallium from waste electrolyte can purify the electrolyte by electrolyzing the electrolyte, thus recycling the electrolyte, cutting down alkaline consumption and realizing the closed loop circulation of the electrolyte during the purification process of gallium; on the other hand, a specialized electrolyte recovery device needs not to be set up, thus simplifying the production process and improving the production efficiency.
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Description

technical field

[0001] The invention relates to a purification treatment method for gallium purified electrolytic waste liquid. Background technique

[0002] Gallium is a precious rare metal. More than 90% of gallium in the world is extracted in the process of producing alumina, and the remaining 10% of gallium is mainly recovered and regenerated from zinc smelting residues or other impurities. With the rapid development of microelectronics and optoelectronics industries, people pay more and more attention to gallium metal, and the requirements for its purity and stability are getting higher and higher. More than 80% of the gallium consumption in the world is high-purity gallium and ultra-pure gallium, and more than 95% of Ga is used to prepare GaAs or GaN. The terminal markets are mobile phones, digital cameras, LEDs and semiconductor light sources.

[0003] High-purity gallium is made of crude gallium as a raw material, which is comprehensively purified by various purific...

Claims

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