Energy-saving copper dissolving tank and copper dissolving method

Abstract

The invention discloses an energy-saving copper dissolving tank and a copper dissolving method, the energy-saving copper dissolving tank comprises a copper dissolving tank (1) with a built-in spray head, the bottom of the copper dissolving tank is respectively communicated with a buffer tank (2) and a settling tank (3), the buffer tank is communicated with the spray head through a circulating pump (4), the top of the copper dissolving tank is provided with an acid mist suction opening (5), and the settling tank is communicated with the acid mist suction opening. The device has the beneficial effects that acid mist containing oxygen is input into the buffer tank, then input into the copper dissolving tank through the buffer tank and finally pumped away through the acid mist suction opening, small circulation is formed, copper is converted into copper sulfate through an exothermic reaction, the temperature can continuously rise along with continuous dissolution of copper, and therefore steam does not need to be input.

Description

technical field [0001] The invention relates to the technical field of electrolytic copper foil production equipment, in particular to a copper melting pot and a copper melting method. Background technique [0002] The copper dissolving process is also called electrolyte preparation, which is the first process in the production of electrolytic copper foil. The purpose is to dissolve the copper material into a sulfate solution to supply the original foil production process. In order to achieve the dissolution of metal copper, the method of oxidation and dissolution is generally adopted in production: dissolved copper is generally divided into atmospheric pressure dissolved copper and high pressure dissolved copper. The so-called high-pressure copper melting is to introduce oxygen into the copper melting tank. As the pressure of oxygen increases, the oxidation tendency of copper increases, so as to achieve the rapid dissolution of copper. High-pressure copper melting is chara...

AI Technical Summary

Problems solved by technology

[0003] During the manufacturing process of electrolytic copper foil, the amount of exhaust gas from molten copper is relatively large, so it is necessary to use a blower to blow air into the copper melting tank, and at the same time, it is necessary to ventilate the copper melting tank at the top of the copper melting tank, so that the amount of exhaust air is large, which not only wastes electricity , it is also necessary to increase the volume of the treatment tower, which takes up a lot of land and wastes space. If the control is not good, it will seriously affect the copper melting speed. While increasing the steam volume to heat the copper melting tank, at the same time, use the cooling plate to replace the electrolyte in the dirty liquid tank Cooling phenomenon often occurs

[0004] China Invention Patent No. CN105040040B discloses a high-efficiency energy-saving copper dissolving system, through the special structure of the spray device, the alternate spraying method makes the copper material fully contact and react with oxygen and sulfuric acid solution, so that the reaction speed of copper dissolution is greatly improved upgrade, but still belong to low-temperature molten copper, need to input steam

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