Copper electrolyte extracting and purifying process technology

A purification process and copper electrolyte technology, applied in the field of smelting, can solve the problems of no better copper electrolyte purification method, affecting the quality of electrolytic copper and current efficiency, etc., and achieve the effect of good quality, reasonable configuration and high current efficiency

Inactive Publication Date: 2013-02-13
崖巨钊
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  • Claims
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Problems solved by technology

Obviously, this copper electrolyte purification method does not remove the above-mentioned impurities, and their existence will se

Method used

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  • Copper electrolyte extracting and purifying process technology

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Embodiment 1

[0020] Example 1: The copper electrolyte is directly extracted with methyl isobutyl ketone without any treatment, and the obtained loaded organic phase is back-extracted with water to obtain the hydrolysis precipitate of antimony and arsenic, and the organic phase is returned to methyl isobutyl ketone after regeneration extraction. The raffinate obtained by methyl isobutyl ketone extraction is once extracted with two (2-ethylhexyl) pyrophosphoric acid, and the loaded organic phase is back-extracted with water to obtain the hydrolysis precipitate of iron, tin and lead, and the organic phase is regenerated and returned to two ( 2-Ethylhexyl)pyrophosphoric acid once extracted, bis(2-ethylhexyl)pyrophosphoric acid extracted once, and the raffinate was adjusted to pH between 2.5 and 4.0, and bis(2-ethylhexyl)pyrophosphoric acid was extracted twice , the obtained loaded organic phase is back-extracted with water to obtain a zinc sulfate solution, and the organic phase is regenerated...

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Abstract

The invention discloses a copper electrolyte extracting and purifying process technology which is characterized in that an extracting and purifying technique process is composed of methyl isobutyl ketone, bis(2-ethylhexyl) pyrophosphoric acid and a chelate extraction agent, according to the theory that Sb3+, As3+, Fe3+, Sn2+, Pb2+, cd2+, Zn2+, cu2+ and Ni2+ can be extracted respectively through extractants according to different acidity, the acidity and the extractants can be adjusted step by step, impurities in the copper electrolyte can be separated and removed in sequence, and the aim of purifying the electrolyte can be achieved. The copper electrolyte extracting and purifying process technology has the advantages of being high in extraction rate, complete in impurity separation, thorough in impurity removing, capable of effectively removing the impurities in the copper electrolyte, accordingly, current efficiency of the copper electrolysis is high, negative plates are good in quality, the phenomena of passivation, polarization, short circuit, resistance increasing and the like cannot occur easily, labor intensity of electrolysis operation workers is reduced, and the copper electrolyte extracting and purifying process technology is suitable for popularization and application in copper electrolysis enterprises.

Description

technical field [0001] The invention relates to a smelting technology, more specifically, the invention relates to a copper electrolyte purification technology. Background technique [0002] The anode plate of copper electrolytic refining is an alloy containing various elements. During the electrolysis process, most of these elements are transferred into the solution, and as the electrolysis process proceeds, its concentration increases, which seriously affects the copper electrolysis process. , their effects are: [0003] Zinc: Consume the sulfuric acid in the solution and increase the resistance of the solution. [0004] Iron: Oxidized to Fe on the anode 3+ , reducing the anode current efficiency. [0005] Nickel: It is easy to cause anode passivation and increase of cell voltage. [0006] Lead: Increases resistance, causing cell voltage to rise. [0007] Tin: solution reduces the quality of cathode copper, and is prone to short circuit between cathode and anode. [...

Claims

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Application Information

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IPC IPC(8): C25C1/12C25C7/06
CPCY02P10/20
Inventor 崖巨钊
Owner 崖巨钊
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