Anode diaphragm cover with built-in anolyte overflow box

Abstract

The utility model relates to the technical field of metallurgical equipment, in particular to an anode diaphragm cover with a built-in anolyte overflow box, which comprises the anolyte overflow box, an anolyte suction pipe, a power line barrier plate, an anode diaphragm cover and an anode diaphragm frame, an anode diaphragm cover is arranged outside the upper part of the anode diaphragm frame, a connected tank is arranged inside the anode diaphragm frame, an anolyte overflow box is arranged between the outer side of the upper part of the connected tank and the inner side of the upper part of the anode diaphragm frame, and the upper edge height of the anolyte overflow box is horizontally consistent with the upper edge height of the anode diaphragm frame; the built-in anolyte overflow box and the anolyte suction pipe are integrated on the anode diaphragm cover, anolyte directly overflows from the anode chamber to the anolyte overflow box, and then the anolyte and acid mist are synchronously sucked and discharged in a negative pressure suction manner, so that the side wall of the electrodeposition cell does not need to be perforated, the structural strength of the electrodeposition cell is improved, and the cost is reduced. And the problems of solution leakage caused by opening holes in the side wall of the electrodeposition cell and damage to the cell body structure due to the technology that anolyte directly flows out of the electrodeposition cell are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of metallurgical equipment, in particular to an anode diaphragm cover with a built-in anode liquid overflow box. Background Art

[0002] In the nickel electrowinning process, titanium-coated lead dioxide anode plates are generally used. The anode mainly undergoes water oxidation and decomposition reaction to produce H + ions and oxygen. The produced H + The ions gradually increase the acidity of the anode liquid. The produced oxygen will enter the electrowinning plant along with the acid during the process of escaping from the anode liquid, causing a large amount of sulfuric acid mist to fill the electrowinning plant, causing the working environment of the nickel electrowinning plant to seriously deteriorate.

[0003] At present, the cathode bagging technology for nickel electrowinning can only adopt measures such as adding sodium dodecyl sulfate, acid mist inhibitors, and plastic balls to suppress the escape of acid mist as much as possible, but the suppression effect is poor and the on-site working environment has not improved.

[0004] Nickel electrowinning anode bagging technology can solve the acid mist problem very well, but the overflow of the anode liquid requires opening holes in the side wall of the electrowinning tank (the number of holes is the same as the number of anodes, generally 51). This method destroys the integrity of the electrowinning tank structure and affects the structural strength of the electrowinning tank; at the same time, the side wall holes are below the cathode liquid level and are sealed with rubber pads. After aging, there is a risk of solution leakage. Another external overflow box can solve the problem of opening holes in the side wall of the electrowinning tank, but the external overflow box needs to occupy a certain amount of space, which may affect normal operation. Utility Model Content

[0005] The utility model provides an anode diaphragm cover with a built-in anode liquid overflow box, which overcomes the shortcomings of the above-mentioned prior art and can effectively solve the problem that the existing opening structure on the side wall of the electrolytic cell destroys the integrity of the electrolytic cell structure and affects the structural strength of the electrolytic cell.

[0006] In order to solve the above problems, the utility model discloses an anode diaphragm cover with a built-in anode liquid overflow box, comprising an anode liquid overflow box, an anode liquid suction pipe, a power line blocking plate, an anode diaphragm cover, and an anode diaphragm frame; an anode diaphragm cover is provided on the outer side of the upper part of the anode diaphragm frame, and an anode liquid overflow box is provided on the upper side of the inner part of the anode diaphragm frame, and the upper edge height of the anode liquid overflow box is kept in the same level as the upper edge height of the anode diaphragm frame;

[0007] An anolyte suction pipe is provided inside the anolyte overflow box, the upper end of which is located inside the anode diaphragm cover and extends through the left side of the anode diaphragm cover to the outside of the anode diaphragm cover;

[0008] A power line blocking plate is provided below the anolyte overflow box.

[0009] A suction corrugated hose is screwed onto the outer side of the top of the anode liquid suction pipe via an external thread, and a negative pressure fan is provided at one end of the suction corrugated hose away from the anode liquid suction pipe.

[0010] The anode liquid suction pipe is arranged in an inverted "L" shape.

[0011] The utility model integrates a built-in anode liquid overflow box and an anode liquid suction pipe on the anode diaphragm cover to decompose the process of the anode liquid directly overflowing from the anode chamber out of the electrolysis cell into overflowing from the anode chamber to the anode liquid overflow box, and then uses a negative pressure suction method to simultaneously suck and discharge the anode liquid and acid mist, thereby solving the problem that the existing hole structure on the side wall of the electrolysis cell destroys the integrity of the structure of the electrolysis cell and affects the structural strength of the electrolysis cell, improves the structural strength of the electrolysis cell, avoids the solution leakage caused by the hole on the side wall of the electrolysis cell and the problem of the anode liquid directly flowing out of the electrolysis cell damaging the cell structure; compared with the external anode liquid overflow box solution, it saves space inside the electrolysis cell and outside the anode diaphragm cover, and reduces the influence of external accessories on production operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings.

[0013] Figure 1 It is a schematic diagram of the main structure of the utility model.

[0014] Figure 2 for Figure 1 Side view of.

[0015] Figure 3 for Figure 1 Top view of the .

[0016] Figure 4 Schematic diagram of the position of the anode liquid overflow box in the electrolytic cell when the utility model is used

[0017] In the figure: 1-anode liquid overflow box, 2-anode liquid suction pipe, 3-power line blocking plate, 4-anode diaphragm cover, 5-anode diaphragm frame, 6-suction corrugated hose, 7-negative pressure fan. DETAILED DESCRIPTION

[0018] The present invention is not limited by the following embodiments, and specific implementation methods can be determined according to the technical solution of the present invention and actual conditions.

[0019] The present invention is further described below in conjunction with the embodiments and drawings:

[0020] like Figure 1-4As shown, an anode diaphragm cover with a built-in anode liquid overflow box comprises an anode liquid overflow box 1, an anode liquid suction pipe 2, a power line blocking plate 3, an anode diaphragm cover 4, and an anode diaphragm frame 5; the anode diaphragm cover 4 is provided on the outer side of the upper part of the anode diaphragm frame 5, and the anode liquid overflow box 1 is provided on the upper side of the inner part of the anode diaphragm frame 5, and the upper edge height of the anode liquid overflow box 1 is kept in the same level as the upper edge height of the anode diaphragm frame 5;

[0021] An anolyte suction pipe 2 is provided inside the anolyte overflow box 1, the upper end of which is located inside the anode diaphragm cover 4 and extends through the left side of the anode diaphragm cover 4 to the outside of the anode diaphragm cover 4;

[0022] A power line blocking plate 3 is provided below the anolyte overflow box 1 .

[0023] The above-mentioned anode liquid overflow box 1 is located in the anode diaphragm frame 5 to facilitate the connection to the negative pressure suction main pipe; the anode liquid overflow box 1 is deep to ensure that the anode liquid overflow box 1 has sufficient effective volume, which can ensure that the anode liquid level in the anode liquid overflow box 1 is always lower than the liquid level in the anode chamber by pulsating suction of the anode liquid, thereby ensuring that the anode liquid in the anode chamber is evenly and stably overflowed and discharged outward, and the liquid level of the anode liquid in the anode chamber is stably controlled.

[0024] The upper edge of the anode liquid overflow box 1 is at the same height as the upper edge of the anode diaphragm frame 5, and is at the same height as the anode liquid level line set in the electrolytic cell. When the liquid level of the anode liquid in the anode chamber is higher than the upper edge of the anode diaphragm frame 5, it will overflow into the anode liquid overflow box 1. The anode liquid overflow box 1 relies on the negative pressure in the anode liquid suction pipe 2 to discharge the anode liquid, so that there is a height difference between the anode liquid overflow box 1 and the anode liquid level in the anode chamber. This ensures that the anode liquid constantly flows from the anode chamber to the anode liquid overflow box 1, and thereby controls the anode liquid level in the anode chamber.

[0025] The above-mentioned power line blocking plate 3 is an accessory of the anode diaphragm frame 5. The cathode is projected onto the anode diaphragm frame 5, extending 60 mm to the left and right sides along the two vertical lines of the cathode. A fiberglass plate with a width of 120 mm is set as the power line blocking plate 3. Its main function is to avoid excessive concentration of power lines at the edge of the cathode during the electrolytic deposition process, resulting in physical defects such as "lip edge", "dendritic granulation", and "edge granulation" at the edge of the electrolytic nickel, effectively improving the physical appearance quality of the electrolytic nickel.

[0026] like Figure 4 As shown, a suction corrugated hose 6 is screwed to the outer side of the top of the anode liquid suction pipe 2 through an external thread, and a negative pressure fan 7 is provided at one end of the suction corrugated hose 6 away from the anode liquid suction pipe 2. Thus, the negative pressure fan 7 sucks the anode liquid in the anode liquid overflow box 1 and the acid mist in the anode chamber through the suction corrugated hose 6 and the anode liquid suction pipe 2.

[0027] like Figure 1, 4 As shown, the anode liquid suction pipe 2 is arranged in an inverted "L" shape. Thus, one end of the "L" shape is inserted into the anode liquid overflow box 1, and the other end is connected to the suction main pipe of the negative pressure fan 7 by means of a suction corrugated hose 6. The negative pressure generated by the negative pressure fan 7 is mainly used to suck the anode liquid and the acid mist in the anode liquid overflow box 1 out of the anode chamber, and the anode liquid enters the anode liquid intermediate tank for temporary storage, and the acid mist is collected and then enters the acid mist absorption device for treatment, and is discharged after meeting the standards.

[0028] As needed, the anode liquid overflow box 1 is provided with a certain wall thickness, wherein the outer dimensions are 90×60×450mm, and the inner cavity dimensions are 60×30×440mm; the external side panels of the anode liquid overflow box 1 and the main frame of the diaphragm frame of the anode diaphragm frame 5 all play a role of structural support, so the glass fiber reinforced plastic plates of the same specifications as the main frame are used as the side walls, and the wall thickness is 15mm; the side panels and the bottom plate of the inner cavity only play a sealing role, so the glass fiber reinforced plastic plates with a thickness of 10mm are used as the wall panels.

[0029] During operation, the anode liquid level in the anode liquid overflow box 1 fluctuates in a pulsed manner. The main reason is that when the anode liquid in the anode chamber overflows into the anode liquid overflow box 1, the anode liquid level submerges the anode liquid suction tube 2. At this time, the negative pressure fan 7 mainly sucks the anode liquid, and the anode liquid level in the anode liquid overflow box 1 drops to expose the anode liquid suction tube 2; at this time, the anode liquid suction tube 2 communicates with the anode chamber through the anode liquid overflow box 1 to suck the acid mist in the anode chamber; when the anode liquid continues to overflow into the anode liquid overflow box 1, the anode liquid level in the anode liquid overflow box 1 rises to submerge the anode liquid suction tube 2, and the next pulsed fluctuation process begins; the anode liquid suction process is very short and will not affect the suction of the acid mist.

[0030] In summary, the utility model integrates a built-in anode liquid overflow box 1 and an anode liquid suction pipe 2 on the anode diaphragm cover 4, and decomposes the process of the anode liquid directly overflowing from the anode chamber out of the electrolysis cell into overflowing from the anode chamber to the anode liquid overflow box 1, and then uses negative pressure suction to simultaneously suck and discharge the anode liquid and acid mist, thereby solving the problem that the existing opening structure on the side wall of the electrolysis cell destroys the integrity of the structure of the electrolysis cell and affects the structural strength of the electrolysis cell, improves the structural strength of the electrolysis cell, avoids the solution leakage caused by the opening on the side wall of the electrolysis cell and the damage to the cell structure caused by the direct flow of the anode liquid out of the electrolysis cell; compared with the external anode liquid overflow box 1 solution, it saves space inside the electrolysis cell and outside the anode diaphragm cover 4, and reduces the impact of external accessories on production operations.

[0031] At the same time, the electric line blocking plate 3 can solve the problem of excessive concentration of electric lines at the edge of the cathode during the electrolytic deposition process, eliminate the physical defects of edge granulation, and greatly improve the physical appearance quality of the electrolytic nickel.

Claims

1. An anode diaphragm cover with a built-in anolyte overflow box, characterized in that: It includes an anode liquid overflow box, an anode liquid suction pipe, a power line baffle, an anode diaphragm cover, and an anode diaphragm frame; an anode diaphragm cover is provided on the outer side of the upper part of the anode diaphragm frame, and an anode liquid overflow box is provided on the upper side of the inner part of the anode diaphragm frame, and the upper edge height of the anode liquid overflow box is kept in the same level as the upper edge height of the anode diaphragm frame; An anolyte suction pipe is provided inside the anolyte overflow box, the upper end of which is located inside the anode diaphragm cover and extends through the left side of the anode diaphragm cover to the outside of the anode diaphragm cover; A power line blocking plate is provided below the anolyte overflow box.

2. The anode diaphragm cover with built-in anolyte overflow box according to claim 1, characterized in that: A suction corrugated hose is screwed onto the outer side of the top of the anode liquid suction pipe via an external thread, and a negative pressure fan is provided at one end of the suction corrugated hose away from the anode liquid suction pipe.

3. An anode diaphragm cover with a built-in anolyte overflow box according to claim 1 or 2, characterized in that: The anode liquid suction pipe is arranged in an inverted "L" shape.

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