Device and process for electrolytically extracting copper in acidic etching liquid

Abstract

The invention provides a device and a process for electrolytically extracting copper in an acidic etching liquid. The device comprises an etching tank, a waste liquid barrel, a copper extraction unit, a dissolving absorption jar and a water absorption jar, wherein the etching tank is connected with the waste liquid barrel which is connected with the copper extraction unit; the copper extraction unit comprises an etching liquid chamber, a regenerated liquid chamber and an electrolytic reaction chamber; the electrolytic reaction chamber is divided into a cathode area and an anode area at an interval by use of a composite high-molecular ionic membrane; the anode area is connected with the dissolving absorption jar by use of an exhaust pipeline, while the cathode area is connected with the water absorption jar by use of an exhaust pipeline; the dissolving absorption jar is in circular connection with the etching tank. The device is reasonable in structure, and the process is complete; the problems of high energy consumption and low reuse rate of electrolytic copper extraction from the acidic etching liquids in the prior art are solved; the quality of the cathode copper is improved, and meanwhile, material waste is reduced and the reuse rate is increased.

Description

Technical field [0001] The invention relates to the field of acid etching solution recovery, in particular to an acid etching solution electrolytic copper extraction device and a process thereof. Background technique [0002] In recent years, the electrical and electronic industry has developed rapidly. As an important part of electrical and electronic products, printed circuit boards have been increasing in output, but the resulting pollution problems have become more and more prominent. In the acid etching solution of the printed circuit board, the waste solution contains more than 100g / L of copper. If it cannot be recycled well, it will lead to a large loss of copper resources and serious pollution to the environment. Although there have been related processes for electrolytic copper extraction from etching solution, there are the following problems: 1. The efficiency of electrolytic copper extraction is low and energy consumption is high; 2. It is only purely electrolytic cop...

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Problems solved by technology

In the acid etching solution for printed circuit boards, the waste solution contains more than 100g / L of copper. If it cannot be recycled well, it will lead to a large loss of copper resources and serious pollution to the environment.

Although there have been related processes for electrolytic copper extraction by etching solution, there are the following problems: 1. The efficiency of electrolytic copper extraction is low and the energy consumption is large; 2. It is only pure electrolytic copper extraction, and the etching solution cannot be recycled; 3. , the waste gas produced will still pollute the environment

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