Manufacturing process of electrolytic copper foil

Abstract

The invention discloses a manufacturing process of an electrolytic copper foil. The process comprises a copper melting and solution preparing process, an electrolyte purifying process, a foil generating and electrolyzing process and an electrolyte recovering process which are sequentially carried out. The process further comprises a complexing and impurity removing process and a carboxylic acid removing process, wherein the complexing and impurity removing process is carried out between the electrolyte purifying process and the foil generating and electrolyzing process and specifically comprises the following steps: feeding organic carboxylic acid into the purified electrolyte at a constant speed before the purified electrolyte is fed into an electrolytic bath so as to enable the content of organic carboxylic acid in the electrolyte fed into the electrolytic bath to be not less than 0.3g / m<3>, and conveying the uniformly-stirred electrolyte into the electrolytic bath to enter the foil generating and electrolyzing process; the carboxylic acid removing process is carried out between the foil generating and electrolyzing process and the electrolyte recovering process and specifically comprises the following step: feeding organic alcohol into the electrolyte at a constant speed when the electrolyte to be recovered flows out from the electrolytic batch. The manufacturing process of the electrolytic copper foil has the advantages that the surface of an electrolytic anode can be effectively prevented from scaling, and thus the quality of the copper foil generated at a cathode can be improved.

Description

technical field [0001] The invention relates to the technical field of electrolytic copper foil production, in particular to a manufacturing process of electrolytic copper foil. Background technique [0002] As we all know, electrolytic copper foil is to deposit metal copper foil on the surface of the cathode roller through the principle of electroplating. Although there are many kinds of electrolytic copper foils with their own characteristics, the manufacturing process is basically the same, that is, electrolytic copper or copper wire waste with the same purity as electrolytic copper is used as raw material, and it is dissolved in sulfuric acid to make sulfuric acid. Copper solution, with the metal roller as the cathode, continuously electrolytically deposits metallic copper on the surface of the cathode through electrolytic reaction, and at the same time continuously strips it from the cathode. This process is called raw foil electrolysis process. [0003] In the process...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a manufacturing process of electrolytic copper foil, which can effectively prevent the scaling of the anode of the electrolytic cell during use, and solve the problem of premature failure of the titanium-based metal oxide anode caused by the scaling of the anode and the copper obtained by electrolysis. The problem of serious decline in foil quality, to achieve the purpose of reducing labor intensity and improving the quality of cathode copper foil