Copper dissolving system and copper dissolving process of electrolytic copper foil

Abstract

The invention discloses a copper dissolving system of an electrolytic copper foil. The system comprises a primary copper dissolving system and a secondary copper dissolving system which are connectedin series, and is provided with a compressed air assembly which is used for supplying compressed air for the primary copper dissolving system and the secondary copper dissolving system, wherein the primary copper dissolving system comprises a copper dissolving tank; a heat exchange device is arranged on the lower part of the copper dissolving tank; coiled pipes and partition plates are arranged onthe upper part and the lower part of the heat exchange device to introduce the compressed air and prevent copper raw materials; the primary copper dissolving system is connected with the secondary copper dissolving system through an overflowing structure; secondary copper dissolving treatment is conducted in the copper dissolving tank of the secondary copper dissolving system; filtering and overflowing operation is conducted in the copper dissolving treatment process; and the copper dissolving system cooperates a corresponding copper dissolving method to provide and obtain copper ion-containing mixture solutions with different concentration, and the reaction rate is increased through reasonable compressed air supply. The copper dissolving quality can be effectively improved, the cuprous ion content and the organic matter impurity content of a copper sulfate solution are reduced, and the temperature of the solution is reduced.

Description

technical field [0001] The invention belongs to the technical field of electrolytic copper foil production, and in particular relates to a copper dissolving system and a copper dissolving process of electrolytic copper foil. Background technique [0002] Copper dissolution is the first process of electrolytic copper foil production. It is a very critical process to provide copper sulfate solution for copper foil production. Copper dissolution is to oxidize copper raw materials in the container for reaction. First, the cleaned copper material and Sulfuric acid and deionized water are added to the copper-dissolving tank, and copper is oxidized under heating conditions to form copper oxide and sulfuric acid to react to form copper sulfate aqueous solution. The copper-dissolving system is composed of a copper-dissolving container (copper-dissolving tank) and A system composed of supporting auxiliary equipment. [0003] The traditional method of dissolving copper is the immersio...

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Problems solved by technology

[0004] The technical problem solved by the present invention is to provide a copper dissolving system and a copper dissolving process for electrolytic copper foil, so as to solve the problems of slow copper dissolving efficiency, high energy consumption and accompanying The cuprous ions cannot be removed, and the solution temperature is high, the heat transfer efficiency of the subsequent cooling heat exchanger is low, and the operating cost is high.

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