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Method for rapidly dissolving copper in electrolytic copper foil manufacturing process

A manufacturing process, electrolytic copper foil technology, applied in electrolytic process, chemical instruments and methods, electroforming, etc., can solve the problems of slow copper dissolution speed, achieve the effect of simple equipment, simple dissolution method, and inhibition of disproportionation reaction

Pending Publication Date: 2021-09-28
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the copper dissolution rate is too slow in the electrolytic copper foil production process, and provide a method for rapidly dissolving copper in the electrolytic copper foil production process, thereby realizing rapid copper dissolution

Method used

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  • Method for rapidly dissolving copper in electrolytic copper foil manufacturing process

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Effect test

Embodiment 1

[0019] Embodiment 1 Place 100g of copper cables in 600ml of 100g / L sulfuric acid aqueous solution, feed into nano-oxygen bubbles for stirring, and make copper accelerate the oxidation and dissolution of copper under the environment of oxygen-rich sulfuric acid aqueous solution, and ensure copper dissolution The temperature of the tank was 50°C. The dissolution rate of copper and the concentration of monovalent copper ions are listed in Table 1.

Embodiment 2

[0020] Embodiment 2 Place 100g of copper cables in 600ml of 100g / L sulfuric acid aqueous solution, feed into nano-oxygen bubbles for stirring, and accelerate the oxidation and dissolution of copper under the environment of oxygen-rich sulfuric acid aqueous solution, and ensure copper dissolution The temperature of the tank was 60°C. The dissolution rate of copper and the concentration of monovalent copper ions are listed in Table 1.

Embodiment 3

[0021] Embodiment 3 Place 100g of copper cables in 600ml of 100g / L sulfuric acid aqueous solution, feed into nano-oxygen bubbles for stirring, and accelerate the oxidation and dissolution of copper under the environment of oxygen-rich sulfuric acid aqueous solution, and ensure copper dissolution The temperature of the tank was 65°C. The dissolution rate of copper and the concentration of monovalent copper ions are listed in Table 1.

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Abstract

The invention belongs to the technical field of electrolytic copper foil manufacturing, relates to a rapid copper dissolving technology which is used for preparing an electrolyte for electrolytic copper foils, and in particular, relates to a method for rapidly dissolving copper in an electrolytic copper foil manufacturing process, wherein the method comprises the following steps: putting a copper material to be dissolved into a copper dissolving tank filled with a sulfuric acid aqueous solution in advance; then introducing oxygen into the copper dissolving tank through a nano bubble generating device, and controlling the concentration of the sulfuric acid aqueous solution in the copper dissolving tank to be larger than that of electrolyte sulfuric acid in the dissolving process. Based on the method, copper can be dissolved rapidly, generation of cuprous ions can be avoided and effectively reduced, and the rapid copper dissolving technology can completely meet the production requirement of electrolytic copper foils.

Description

technical field [0001] The invention belongs to the technical field of electrolytic copper foil manufacturing, and relates to a rapid copper-dissolving technology, which is used to manufacture an electrolytic copper foil electrolyte, in particular to a rapid copper-dissolving method in the electrolytic copper foil manufacturing process. Background technique [0002] Dissolving metal copper materials that meet the production requirements of electrolytic copper foil and preparing electrolyte solution is the first process of producing electrolytic copper foil. Due to Cu 2+ The standard electrode potential of / Cu is 0.337V. Under normal circumstances, elemental copper cannot be dissolved in aqueous sulfuric acid. If there is no oxygen or other oxidants, metallic copper is stable in aqueous sulfuric acid at any pH. , This means that for the copper-dissolving liquid-making process, in the absence of oxygen or other oxidizing agents, copper cannot be transferred into the solution ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01F13/02C25D1/04B01F33/40
CPCC25D1/04
Inventor 陈智栋孙玉法王文昌明小强王朋举
Owner CHANGZHOU UNIV
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