A kind of anode tank, raw foil machine, electrolyte flow production method of electrolytic copper foil

Abstract

The invention discloses an anode tank, a crude foil engine and a method for producing electrolytic copper foil through electrolyte flowing, and belongs to the technical field of electrolytic copper foil production equipment. The crude foil engine is technically characterized by comprising the anode tank and an electrolyte pipeline (3), wherein the anode tank comprises an anode plate located on oneside of a cathode roller, and a plurality of electrolyte inlet holes are formed in the surface of the anode plate; the electrolyte pipeline (3) comprises a main pipeline and a plurality of branch pipelines, the main pipeline is connected with the branch pipelines, the main pipeline of the electrolyte pipeline (3) penetrates into the anode tank (1), and the branch pipelines penetrate through the electrolyte inlet holes and point to the cathode roller; and a scattering pipe is further arranged on the crude foil engine. The invention aims to provide the anode tank, the crude foil engine and themethod for producing the electrolytic copper foil through electrolyte flowing, and the uniformity of indexes such as surface density and thickness of the electrolytic copper foil is improved.

Description

technical field [0001] The invention relates to the field of electrolytic copper foil, and more specifically relates to a method for producing electrolytic copper foil by flowing an anode tank, a foil machine, and an electrolyte. Background technique [0002] Areal density and copper foil thickness uniformity are key indicators of electrolytic copper foil. How to increase the areal density of electrolytic copper foil and how to improve the thickness uniformity of copper foil have always been the key research topics of major companies. [0003] as attached figure 1 Shown, CN102277597A discloses the preparation of a kind of special lithium battery double-sided photoelectrolytic copper foil, and it comprises the following steps: get the first additive solution, the second additive solution and copper sulfate electrolytic solution; Copper ion content in the copper sulfate electrolytic solution 70~100g / L, sulfuric acid content 100~170g / L, chloride ion content 0.01~0.04g / L, coppe...

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Problems solved by technology

[0004] For the design of CN102277597A, it adopts the method of feeding liquid from the bottom, which has the following problems: 1) the liquid feeding from the bottom will drive oxygen, acid gas, etc. to the liquid surface, causing the risk of oxidation of copper foil; 2 ) The Reynolds number of the liquid inlet of the lower liquid inlet is too large, causing the thickness of the copper foil formed near the lower liquid inlet to be uneven from that of other parts

[0011] 1) It is easy to form turbulent flow at the liquid inlet and outlet (the liquid inlet needs a large flow rate, otherwise the old liquid cannot be pushed to the liquid return port), resulting in the thickness of the copper foil corresponding to the liquid inlet and outlet cannot be well controlled;

[0012] 2) The distribution field of copper ions: it must be that the liquid inlet is large and the liquid return port is small. The difference in the distribution field of copper ions will also lead to uneven thickness of the copper foil deposited by the cathode roller

[0013] And how to solve the above two problems, there is still no research in the prior art

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