Copper anode plate surface oxide and release agent pretreatment device for electrolysis

Abstract

The utility model discloses a copper anode plate surface oxide and release agent pretreatment device for electrolysis, which relates to the technical field of non-ferrous metal hydrometallurgy and comprises an anode plate online soaking and washing process and an air drying process. A soaking liquid circulating system; the anode plate online soaking washing and air drying process comprises a soaking washing tank body installed in an anode unit arrangement conveyor, the depth of the soaking washing tank body is 1.5-2.1 m, the soaking washing tank body is designed to be in a funnel shape, six circles of coil pipe steam heating pipes are installed at the position 1.3 m away from the bottom face of the inner wall of the soaking washing tank body, and the coil pipe steam heating pipes are connected with the soaking washing tank body. According to the device, online automatic soaking and air drying of the copper anode plate can be realized, impurities generated by soaking and washing the surface of the copper anode plate can be efficiently recycled, and compared with the prior art, the device can reduce the output rate of anode slime, reduce the treatment cost of the anode slime and the copper content of the anode slime, reduce the labor intensity and save the cost.

Description

Technical Field

[0001] The utility model relates to the technical field of nonferrous metal hydrometallurgy, in particular to a device for pretreating surface oxides and a release agent of a copper anode plate for electrolysis. Background Art

[0002] When casting anode plates by smelting, a release agent (mainly barium sulfate) needs to be sprayed on the mold surface to facilitate the demoulding of the anode. When electrolysis tanks are loaded, if the surface of the anode plates is not treated in any way, the release agent will enter the electrolysis system with the anode, or fall to the bottom of the tank and mix with the anode mud, reducing the grade of the anode mud; or mechanically adhere to the cathode surface, affecting the quality of cathode copper.

[0003] There is a certain time interval between the production of anode plates and their entry into electrolytic production. The average interval for domestically purchased anodes is 2 months, and the interval for purchased anodes from abroad is as long as 6 months. During this period of time, the surface of the anode is either oxidized or covered with dirt. If such anodes are directly loaded into the electrolysis tank without any treatment, it will have a significant impact on the quality of the cathode copper.

[0004] At present, domestic and foreign copper electrolysis manufacturers use mechanical roller brush cleaning devices and high-pressure spray cleaning devices to treat the anode surface. These cleaning methods only physically clean the anode surface, and the surface oxide cannot be treated, which will also have an adverse effect on the quality of cathode copper in the early stage of electrolysis. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies in the prior art, the utility model provides a device for pretreating the surface oxides and release agents of copper anode plates for electrolysis, which solves the technical problem that the prior art only physically cleans the anode surface but fails to treat the surface oxides, which also has an adverse effect on the quality of cathode copper in the early stage of electrolysis.

[0007] (II) Technical solution

[0008] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0009] A device for pretreating the surface oxide and release agent of copper anode plates for electrolysis, comprising an online soaking and air-drying process for the anode plates; a soaking liquid circulation system; and a soaking product filtering system. The online soaking and air-drying process for the anode plates comprises a soaking tank body installed inside an anode unit arrangement conveyor, the depth of the soaking tank body is 1.5-2.1m, the soaking tank body is funnel-shaped, and six coil steam heating pipes are installed 1.3m from the bottom of the inner wall of the soaking tank body, and each coil steam heating pipe is provided with a DN10 mm small hole, the groove wall at the bottom of the foam washing tank body has an angle of 20-60° with the horizontal plane, a foam washing liquid outlet pipe is installed at the bottom of the foam washing tank body, a clamping valve is installed on the foam washing liquid outlet pipe, a connecting middle tank pipeline is installed on the clamping valve, the foam washing liquid outlet pipe is connected and fixed to the connecting middle tank pipeline through the clamping valve, a liquid outlet pipe is provided on the upper right side of the foam washing tank body, an inlet and outlet loading device is installed at the front end of the foam washing tank body, an outlet and outlet loading device is installed at the end of the foam washing tank body, and a liquid level sensor and a temperature sensor are arranged inside the foam washing tank body.

[0010] Preferably, the washing liquid circulation system comprises an anode mud tank, a supernatant tank, a purification filter and a circulation tank.

[0011] Preferably, the liquid outlet pipe is connected to the anode mud tank, and a regulating valve is provided on the washing liquid inlet pipe.

[0012] Preferably, the filtration system for the washed product comprises a filter press pump and a plate-frame filter press, and the intermediate tank pipeline is connected to the plate-frame filter press via the filter press pump.

[0013] (III) Beneficial effects

[0014] 1. This process can realize online automatic washing and air drying of copper anode plates. Impurities generated by washing on the surface of copper anode plates can be efficiently recovered. Compared with the existing technology, it can reduce the output rate of anode mud, reduce the cost of anode mud treatment and the copper content of anode mud, reduce labor intensity and save costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the utility model in conjunction with the accompanying drawings.

[0016] Figure 1 This is the process flow chart of the utility model;

[0017] Figure 2 This is a schematic diagram of the practical bubble washing liquid circulation system;

[0018] Figure 3It is a structural diagram of the tank body of the utility model.

[0019] Legend: 21. Washing tank body; 22. Washing liquid inlet pipe; 23. Regulating valve; 24. Coil steam heating pipe; 25. Pipe connecting the middle tank; 26. Clamping valve; 27. Liquid outlet pipe. DETAILED DESCRIPTION

[0020] The embodiment of the present application provides a device for pretreating the surface oxides and release agents of copper anode plates for electrolysis, thereby effectively solving the problem that the existing method only physically cleans the surface of the anode, but the surface oxides cannot be treated, which also has an adverse effect on the quality of cathode copper in the early stage of electrolysis. The device for pretreating the surface oxides and release agents of copper anode plates for electrolysis can realize online automatic washing and air drying of copper anode plates, and impurities generated by washing the surface of copper anode plates can be efficiently recovered. Compared with the prior art, the output rate of anode mud can be reduced, the cost of anode mud treatment and the copper content of anode mud can be reduced, the labor intensity can be reduced, and the cost can be saved.

[0021] Embodiment: Figure 1 , Figure 2 and Figure 3 As shown, the technical solution in the embodiment of the present application effectively solves the technical problem that the existing anode surface is only physically cleaned, and the surface oxide cannot be treated, which also has an adverse effect on the quality of cathode copper in the early stage of electrolysis. The overall idea is as follows:

[0022] In view of the problems existing in the prior art, the utility model provides a device for pretreating the surface oxide and release agent of copper anode plates for electrolysis, including online soaking and air-drying process of anode plates; a soaking liquid circulation system; and a filtering system for the obtained soaking. The online soaking and air-drying process of anode plates includes a soaking tank body 21 installed inside the anode unit arrangement conveyor, the depth of the soaking tank body 21 is 1.5-2.1m, the soaking tank body 21 is funnel-shaped, six coil steam heating pipes 24 are installed 1.3m away from the bottom surface of the inner wall of the soaking tank body 21, and each coil steam heating pipe 24 is provided with a DN10mm small hole at an interval of 50-80mm. The bottom wall of the soaking tank body 21 has an angle of 20-60° with the horizontal plane, and a soaking liquid outlet is installed at the bottom of the soaking tank body 21. The outlet pipe of the foam washing liquid is provided with a clamping valve 26, and a connecting intermediate tank pipe 25 is provided on the clamping valve 26. The foam washing liquid outlet pipe is connected and fixed to the connecting intermediate tank pipe 25 through the clamping valve 26. A liquid outlet pipe 27 is provided on the upper edge of the right side of the foam washing tank body 21. An inlet and outlet transfer device is provided at the front end of the foam washing tank body 21, and an outlet and outlet transfer device is provided at the end of the foam washing tank body 21. A liquid level sensor and a temperature sensor are provided inside the foam washing tank body 21. The foam washing liquid circulation system includes an anode mud tank, a supernatant tank, a purification filter and a circulation tank. The liquid outlet pipe 27 is connected to the anode mud tank. A regulating valve 23 is provided on the foam washing liquid inlet pipe 22. The foam washing product filtration system includes a filter press pump and a plate and frame filter press. The connecting intermediate tank pipe 25 is connected to the plate and frame filter press through the filter press pump.

[0023] (1) A measuring and loading device is installed at the front end of the foam washing tank body 21, which can lift and place the anode plates into the foam washing tank body 21 one by one. The anode plates in the foam washing tank body 21 are advanced by the arrangement conveyor for 2-3 minutes and reach the end of the foam washing tank body 21;

[0024] (2) A transport device is installed at the end of the tank body 21 of the foam washing tank, which can lift the anode plates one by one and place them on the arrangement conveyor outside the tank body 21 of the foam washing tank after washing;

[0025] (3) After the anode plate is lifted by the transfer device, each anode plate is air-dried through an air-drying process, completing the online soaking and air-drying of the anode plate;

[0026] Soaking liquid circulation system: The soaking liquid inlet pipe 22 is connected to the outlet pipe of the liquid after arsenic removal in the liquid purification section, enters from the upper left edge of the soaking tank body 21, and goes deep into the bottom of the soaking tank body 21 1.5m close to the left wall of the soaking tank body 21. A regulating valve 23 is installed on the soaking liquid inlet pipe 22 to achieve automatic regulation;

[0027] The dearsenicated liquid is used as the washing liquid, and the sulfuric acid concentration can reach 280-400 g / l and the flow rate is 40-110 l / min;

[0028] The liquid outlet pipe 27 is connected to the anode mud tank, and the waste foam washing liquid passes through the anode mud tank, the supernatant tank, the purification filter, the electrolytic cell, the circulation tank, and the clean liquid is removed and then enters the foam washing tank body 21 through the foam washing liquid inlet pipe 22 again;

[0029] The intermediate tank pipeline 25 is connected to the plate and frame filter press through a filter press pump. Impurities pass through the filtration system and become filter residues for further treatment. The waste foam washing liquid passes through the foam washing liquid circulation system and then re-enters the foam washing tank body 21 through the foam washing liquid inlet pipe 22.

[0030] Working principle:

[0031] The first step is: (1) a measuring and loading device is installed at the front end of the soaking tank body 21, which can lift and place the anode plates into the soaking tank body 21 one by one. The anode plates in the soaking tank body 21 are then moved forward by the arrangement conveyor for 2-3 minutes to reach the end of the soaking tank body 21;

[0032] (2) A transport device is installed at the end of the tank body 21 of the foam washing tank, which can lift the anode plates one by one and place them on the arrangement conveyor outside the tank body 21 of the foam washing tank after washing;

[0033] (3) After the anode plate is lifted by the transfer device, each anode plate is air-dried through an air-drying process, completing the online soaking and air-drying of the anode plate.

[0034] Step 2: The washing liquid circulation system: The washing liquid inlet pipe 22 is connected to the outlet pipe of the arsenic removal liquid in the liquid purification section, enters from the upper left edge of the washing tank body 21, and is close to the left wall of the washing tank body 21 and deep into the bottom of the washing tank body 21 by 1.5m. The regulating valve 23 is installed on the washing liquid inlet pipe 22 to realize automatic regulation;

[0035] The dearsenicated liquid is used as the washing liquid, and the sulfuric acid concentration can reach 280-400 g / l and the flow rate is 40-110 l / min;

[0036] The liquid outlet pipe 27 is connected to the anode mud tank, and the waste foam washing liquid passes through the anode mud tank, supernatant tank, purification filter, electrolytic cell, circulation tank, and clean liquid of the electrolysis system and then passes through the foam washing liquid inlet pipe 22 to enter the foam washing tank body 21.

[0037] The third step is to connect the middle tank pipeline 25 to the plate and frame filter press through the filter press pump. The impurities pass through the filtration system and become filter residues for further treatment. The waste foam washing liquid passes through the foam washing liquid circulation system and then re-enters the foam washing tank body 21 through the foam washing liquid inlet pipe 22.

[0038] Finally, it should be noted that: Obviously, the above embodiments are only examples for clearly explaining the present invention, and are not intended to limit the implementation methods. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from this are still within the scope of protection of the present invention.

Claims

1. A device for pretreating surface oxides and release agents of copper anode plates for electrolysis, characterized in that: The method comprises an online anode plate washing and air drying process; a washing liquid circulation system; and a washing product filtering system. The online anode plate washing and air drying process comprises a washing tank body (21) installed inside an anode unit arrangement conveyor. The depth of the washing tank body (21) is 1.5-2.1 m. The washing tank body (21) is funnel-shaped. Six coil steam heating pipes (24) are installed 1.3 m from the bottom of the inner wall of the washing tank body (21). Small holes of DN10 mm are arranged at intervals of 50-80 mm on each coil steam heating pipe (24). The bottom wall of the washing tank body (21) has an angle of 20-60° with the horizontal plane. A foaming liquid outlet pipe is installed at the bottom of the foaming tank body (21), a clamping valve (26) is installed on the foaming liquid outlet pipe, a connecting intermediate tank pipe (25) is installed on the clamping valve (26), the foaming liquid outlet pipe is connected and fixed to the connecting intermediate tank pipe (25) via the clamping valve (26), and a liquid outlet pipe (27) is provided on the upper right side of the foaming tank body (21); The front end of the foaming tank body (21) is provided with an inlet transfer device, the rear end of the foaming tank body (21) is provided with an outlet transfer device, and a liquid level sensor and a temperature sensor are arranged inside the foaming tank body (21).

2. The device for pretreating the surface oxide and release agent of a copper anode plate for electrolysis according to claim 1, characterized in that: The washing liquid circulation system comprises an anode mud tank, a supernatant tank, a purification filter and a circulation tank.

3. The device for pretreating the surface oxide and release agent of the copper anode plate for electrolysis according to claim 2, characterized in that: The liquid outlet pipe (27) is connected to the anode mud tank.

4. The device for pretreating the surface oxide and release agent of a copper anode plate for electrolysis according to claim 1, characterized in that: The washing liquid inlet pipe (22) is provided with a regulating valve (23).

5. The device for pretreating the surface oxide and release agent of the copper anode plate for electrolysis according to claim 1, characterized in that: The filtration system for the foaming and washing product comprises a filter press pump and a plate and frame filter press.

6. The device for pretreating the surface oxide and release agent of the copper anode plate for electrolysis according to claim 5, characterized in that: The connecting intermediate tank pipeline (25) is connected to the plate and frame filter press via a filter press pump.

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