CN218951522U

CN218951522U - Spraying type copper dissolving device

Info

Publication number: CN218951522U
Application number: CN202222840594.XU
Authority: CN
Inventors: 阮跃进; 殷勇; 周盛夫; 刘吉赛
Original assignee: Anhui Huachuang New Material Co ltd
Current assignee: Anhui Huachuang New Material Co ltd
Priority date: 2022-10-27
Filing date: 2022-10-27
Publication date: 2023-05-02
Anticipated expiration: 2032-10-27

Abstract

The utility model discloses a spray-type copper dissolving device, which comprises: a copper dissolving tank; the liquid storage chamber is positioned at the bottom of the copper dissolving tank; the charging port is arranged at the top of the copper dissolving tank; the annular spraying pipes are horizontally distributed above the inner part of the copper dissolving tank; the copper dissolving pump is communicated between the liquid storage chamber and the annular spray pipe; the copper dissolving tank is characterized in that a plurality of vertical spray pipes are uniformly distributed on the inner wall of the copper dissolving tank between the liquid storage chamber and the annular spray pipes, the tops of the vertical spray pipes are communicated through an annular pipeline, the annular pipeline is communicated with the copper dissolving pump, and pipe caps are arranged at the bottoms of the vertical spray pipes. The copper dissolving tank has the beneficial effects that the plurality of vertical spray pipes which are uniformly distributed in the axial direction are added in the copper dissolving tank, so that the spray dead angle is greatly reduced, the spray area is increased, and the copper dissolving tank has the characteristics of good spray effect, high copper dissolving efficiency, stable copper dissolving process and the like.

Description

Spraying type copper dissolving device

Technical Field

The utility model relates to the technical field of copper foil production equipment, in particular to a copper dissolving device for electrolytic copper foil production.

Background

In the production of electrolytic copper foil, the principle of copper dissolution is to change metallic copper into Cu dissolved in water ²⁺ The method comprises the following steps: cu to Cu ² ⁺ The metallic copper becomes copper sulfate of the aqueous solution. The copper dissolving process is to take treated and qualified metallic copper as a raw material and put the raw material into a copper dissolving tank. The raw material copper metal is subjected to a series of chemical combination reactions with oxygen and sulfuric acid in a copper dissolving tank, and the solid-phase copper metal is dissolved into a liquid-phase copper sulfate solution.

The copper dissolving work section is an important link as a preparation work section for producing the lithium electric copper foil. The production efficiency of the copper sulfate solution will affect the yield and quality of the copper foil. In the copper dissolution process, under the condition that the chemical reaction temperature and the oxygen supply of the copper dissolution reach the optimal conditions, the reaction contact area is a key factor influencing the copper dissolution rate.

Chinese patent publication No. CN215906278U discloses an improved copper-dissolving spray tank, comprising a tank body, a top cover and a circulating liquid mechanism; the tank body is internally provided with an annular spray pipe and a supporting plate, and the side wall of the spray pipe is provided with a plurality of spray heads; the backup pad is located the below of shower, and the backup pad top is provided with a plurality of bottom plates, is equipped with a plurality of through-holes on the bottom plate.

Chinese patent publication No. CN206304581U discloses a copper-dissolving tank spray system, which comprises a copper-dissolving tank, a spray pipe and a liquid drain pipe, wherein a spray plate is arranged below a tank body top cover of the copper-dissolving tank, the tank body top cover, the spray plate and the tank body wall form a liquid storage type cylindrical cavity, spray holes are uniformly formed in the spray plate, and the spray pipe is arranged above the spray plate through the tank body top cover.

The spraying mechanism of the patent is limited at the top of the copper dissolving tank, so that even if a plurality of layers are arranged, the existence of spraying dead angles cannot be avoided, the uniformity of copper dissolving is low, the copper dissolving speed is low, and the defects are high cost and high energy consumption and cannot meet the requirement of efficiently producing copper foil.

Disclosure of Invention

The utility model aims to solve the technical problems that a spraying mechanism of a copper dissolving tank has a spraying dead angle and the copper dissolving efficiency is low, and provides a spraying copper dissolving device which can greatly reduce the spraying dead angle, effectively improve the spraying contact area and improve the copper dissolving speed.

The technical scheme of the utility model is as follows: a spray copper dissolving device, comprising: a copper dissolving tank; the liquid storage chamber is positioned at the bottom of the copper dissolving tank; the charging port is arranged at the top of the copper dissolving tank; the annular spraying pipes are horizontally distributed above the inner part of the copper dissolving tank; the copper dissolving pump is communicated between the liquid storage chamber and the annular spray pipe; the copper dissolving tank is characterized in that a plurality of vertical spray pipes are uniformly distributed on the inner wall of the copper dissolving tank between the liquid storage chamber and the annular spray pipes, the tops of the vertical spray pipes are communicated through an annular pipeline, the annular pipeline is communicated with the copper dissolving pump, and pipe caps are arranged at the bottoms of the vertical spray pipes.

In the scheme, a plurality of spray holes deviating from the inner wall of the copper dissolving tank are formed in the radial direction of the vertical spray pipes, and the included angle between the adjacent spray holes is 30-60 degrees.

In the scheme, the included angles between the adjacent spray holes on the adjacent vertical spray pipes are staggered.

In the scheme, three annular spraying pipes are arranged, and spraying holes on adjacent annular spraying pipes are staggered.

The improvement of the scheme is that a plate heat exchanger is connected between the copper dissolving pump and the annular spray pipe and between the copper dissolving pump and the annular pipe.

In the scheme, the grid filter plates are fixedly connected to the inner wall of the copper dissolving tank between the vertical spray pipes and the liquid storage chamber.

A further improvement of the scheme is that the side wall of the liquid storage chamber is communicated with an air inlet.

The further improvement of the scheme is that the side wall of the copper dissolving tank above the annular spray pipe is communicated with an exhaust fan through an exhaust pipe.

According to the scheme, a filter pipe is arranged in the liquid storage chamber and is communicated with the copper dissolving pump.

A further improvement of the scheme is that the air inlet is provided with a layer of stainless steel gauze.

The utility model has the beneficial effects that a plurality of vertical spray pipes which are uniformly distributed in the axial direction are added in the copper dissolving tank, so that the spray dead angle is greatly reduced, and the spray area is increased; the exhaust fan is connected with the exhaust opening at the upper part of the tank body through a pipeline, so that air in the tank circulates, the grid filter plates can enable the air to flow uniformly, and copper materials, oxygen and sulfuric acid solution are enabled to be in full contact reaction. The utility model has the characteristics of good spraying effect, high copper dissolving efficiency, stable copper dissolving process and the like.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model:

FIG. 2 is a schematic diagram of the operation of the present utility model:

FIG. 3 is a schematic view of a shower pipe of the present utility model:

FIG. 4 is a cross-sectional view of FIG. 3;

in the figure, 1, a copper dissolving tank; 11. a cylinder; 12. a can lid; 13 charging hole; 14. an annular spray pipe; 15. a vertical spray pipe; 16. a grille filter; 17. an overflow port; 18. a liquid storage chamber; 19. an air inlet; 2. an exhaust fan; 3. an air draft pipe orifice; 4. a plate heat exchanger; 5. a copper dissolving pump; 6. and (5) a manhole.

Detailed Description

The technical solutions in the embodiments of the present utility model are clearly and completely described below with reference to the accompanying drawings. It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. Based on the embodiments of the present utility model, all other embodiments of the utility model are within the scope of the present utility model for those of ordinary skill in the art without making any inventive effort.

As shown in fig. 1-3, the copper dissolving tank 1 comprises a closed circular tank body formed by a liquid storage chamber 18 at the bottom of the tank, a cylinder 11, a tank cover 12 and the like, wherein a feed inlet 13, an air draft pipe orifice 3, an annular spray pipe 14, a vertical spray pipe 15, a grid filter plate 16, an overflow port 17, a liquid storage chamber 18, an air inlet 19 and a manhole 6 are sequentially arranged in the tank from top to bottom; the auxiliary equipment outside the tank body is provided with: an exhaust fan 2; a plate heat exchanger 4; a copper dissolving pump 5, a pipeline thereof, etc.

The cylinder, the tank cover, the annular spray pipe, the vertical spray pipe, the pipeline and the exhaust fan impeller are all made of 316L stainless steel. And the surfaces of parts of the auxiliary equipment exhaust fan, the plate heat exchanger and the copper dissolving pump, which are contacted with the electrolyte or the acid mist, are provided with corrosion-resistant layers for corrosion-resistant treatment.

The tank cover consists of a fixed cover and a movable cover, wherein the fixed cover consists of a cover plate, a coaming and a surrounding ring, and is welded on the cylinder; the movable cover consists of a coaming plate and a cover plate, and three handles are welded on the cover plate.

Six exhaust openings are uniformly distributed in the circumferential direction of the copper dissolving tank body, every three exhaust openings are connected through a pipeline, and then the exhaust openings are converged on the pipeline to be connected to an exhaust fan.

The two exhaust fans, one of which is made of glass fiber reinforced plastic, are respectively provided with a corrosion-resistant layer on the surfaces of the components which are directly contacted with acid mist in the exhaust fans, and are subjected to corrosion-resistant treatment. The acid mist generated in the copper dissolving tank is pumped away, a large amount of air is sucked in through the air inlet when the acid mist is pumped away, the oxygen content in the copper dissolving tank is improved, and the copper dissolving reaction is accelerated.

The number of the annular spraying pipes is three, the arrangement of the three annular spraying pipes is slightly staggered, as shown in fig. 4, the distribution types of the spraying small holes are two, the left graph of fig. 4 is that the spraying small holes are distributed at 60 degrees, the right graph of fig. 4 is that the spraying small holes are distributed at 60 degrees, and the two types are uniformly distributed in turn.

Six vertical spray pipes are uniformly distributed along the circumferential direction of the copper dissolving tank cylinder body, the tops of the six vertical spray pipes are connected by an annular pipeline, the annular pipeline is communicated with a copper dissolving pump, and the lower end of the annular pipeline is connected by a pipe cap for overhauling; the distribution pattern of the spraying small holes on the six vertical spraying pipe pipelines is consistent with that of the annular spraying pipe.

The grid filter plate is made of PP plastic and is clamped on a cone in the cylinder body through a bearing boss.

The plate heat exchanger is used for controlling the temperature of the copper-dissolving electrolyte.

The air inlet is provided with one layer of stainless steel gauze which is tightly arranged at the air inlet.

Working principle: under the condition that the temperature and the oxygen supply of the copper-dissolving chemical reaction reach the optimal conditions, the factor influencing the copper-dissolving reaction rate is the reaction contact area; according to the copper dissolving tank, the vertical spray pipes are added in the circumferential direction of the copper dissolving tank body, so that spray dead angles are reduced, and the spray area is enlarged, and the copper dissolving efficiency is improved.

The application method of the utility model is as follows: specifically, firstly, copper materials are added from a charging port above a tank body, a prepared dilute sulfuric acid solution is heated through a plate heat exchanger by a copper dissolving pump, the dilute sulfuric acid solution is conveyed to a plurality of spraying holes uniformly distributed on the circumference of an annular spraying pipe and a vertical spraying pipe to be sprayed on the copper materials, and then an exhaust fan is connected with an exhaust port on the upper part of the tank body by a pipeline, so that air in the tank is circulated and is continuously supplemented. The copper material is fully contacted and reacted with oxygen and sulfuric acid solution, so that the copper material is continuously and rapidly dissolved into copper sulfate solution, and the copper sulfate solution flows into a liquid storage tank through the filtering of a grid filter plate.

Claims

1. A spray copper dissolving device, comprising: a copper dissolving tank; the liquid storage chamber is positioned at the bottom of the copper dissolving tank; the charging port is arranged at the top of the copper dissolving tank; the annular spraying pipes are horizontally distributed above the inner part of the copper dissolving tank; the copper dissolving pump is communicated between the liquid storage chamber and the annular spray pipe; the method is characterized in that: the copper dissolving tank is characterized in that a plurality of vertical spray pipes are uniformly distributed on the inner wall of the copper dissolving tank between the liquid storage chamber and the annular spray pipes, the tops of the vertical spray pipes are communicated through annular pipelines, the annular pipelines are communicated with the copper dissolving pump, and pipe caps are arranged at the bottoms of the vertical spray pipes.

2. A spray copper dissolving device as defined in claim 1, wherein: a plurality of spray holes deviating from the inner wall of the copper dissolving tank are formed in the radial direction of the vertical spray pipes, and the included angle between every two adjacent spray holes is 30-60 degrees.

3. A spray copper dissolving device as defined in claim 2, wherein: the included angles between the adjacent spray holes on the adjacent vertical spray pipes are staggered.

4. A spray copper dissolving device as defined in claim 1, wherein: the number of the annular spraying pipes is three, and the spraying holes on the adjacent annular spraying pipes are staggered.

5. A spray copper dissolving device as defined in claim 1, wherein: and a plate heat exchanger is connected between the copper dissolving pump and the annular spray pipe and between the copper dissolving pump and the annular pipeline.

6. A spray copper dissolving device as defined in claim 1, wherein: and a grid filter plate is fixedly connected to the inner wall of the copper dissolving tank between the vertical spray pipes and the liquid storage chamber.

7. A spray copper dissolving device as defined in claim 1, wherein: the side wall of the liquid storage chamber is communicated with an air inlet.

8. A spray copper dissolving device as defined in claim 1, wherein: the side wall of the copper dissolving tank above the annular spray pipe is communicated with an exhaust fan through an exhaust pipe.

9. A spray copper dissolving device as defined in claim 1, wherein: the liquid storage chamber is internally provided with a filter pipe which is communicated with a copper dissolving pump.

10. A spray copper dissolving device as defined in claim 7, wherein: the air inlet is provided with a layer of stainless steel gauze.