External nickel electrodeposition anolyte overflow liquid receiving box

Abstract

The utility model relates to the technical field of metallurgical equipment, in particular to an external nickel electrodeposition anolyte overflow liquid receiving box which comprises an anolyte overflow pipe, an anolyte overflow liquid receiving box and a suction pipe, an anolyte overflow pipe is arranged at the top of the anolyte overflow receiving box; a suction pipe is arranged at the top of the anolyte overflow liquid receiving box behind the anolyte overflow pipe; according to the utility model, the anolyte overflow receiving box, the anolyte overflow pipe and the suction pipe are connected outside the anode chamber, and the anolyte and the acid mist are sucked by utilizing the negative pressure fan, so that the pulsating suction of the anolyte and the acid mist is realized, and the suction of the anolyte and the acid mist in the anode chamber can be realized without forming holes in the side wall of the electrodeposition cell; the problem that the structural strength of the electrodeposition cell is affected due to the fact that the integrity of the electrodeposition cell structure is damaged by the existing side wall trepanning structure of the electrodeposition cell is solved, the structural strength of the electrodeposition cell is improved, and the problem of solution leakage caused by trepanning of the side wall of the electrodeposition cell is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of metallurgical equipment, in particular to an external nickel electrodeposition anode liquid overflow receiving box. Background Art

[0002] During the nickel electrowinning process, oxygen evolution and acid production reactions mainly occur on the surface of the insoluble anode. The acid production reaction gradually increases the acidity of the electrodeposited liquid. The oxygen produced by the oxygen evolution reaction will enter the electrowinning plant along with the acid-containing vapor during the escape process, causing a large amount of sulfuric acid mist to fill the plant, causing the working environment of the nickel electrowinning plant to seriously deteriorate.

[0003] At present, nickel electrowinning uses anode bagging technology to solve the on-site acid mist problem, that is, the anode chamber is formed by using the anode diaphragm frame and diaphragm bag to achieve physical closure of the anode; the cathode liquid level is higher than the anode liquid level, so that the cathode liquid penetrates into the anode liquid through the pressure generated by the liquid level difference, and at the same time blocks the anode liquid from seeping back into the cathode liquid, thereby achieving physical isolation of the anode liquid; an overflow pipe is provided at the anode liquid level line in the anode chamber, and the anode liquid is discharged from the anode chamber to the electrowinning tank through the anode liquid overflow pipe reserved at the corresponding position of the side wall of the electrowinning tank; the anode liquid overflow pipe is connected to the acid mist absorption pipeline, and while collecting the anode liquid, the acid mist produced in the anode chamber is sucked by a micro-negative pressure, and is collected and concentrated in the acid mist absorption device for treatment and discharge after meeting the standards, thereby achieving directional collection and treatment of on-site acid mist.

[0004] Anode bagging technology can effectively solve the on-site acid mist problem, but the overflow of the anode liquid requires holes to be opened in the side wall of the electrolytic cell (the number of holes is the same as the number of anodes, generally 51). This method destroys the integrity of the electrolytic cell structure and affects the structural strength of the electrolytic cell. At the same time, the side wall holes are below the anode liquid level and are sealed with rubber pads. After aging of the rubber pads, there is a risk of solution leakage. Utility Model Content

[0005] The utility model provides an external nickel electrolytic anode liquid overflow receiving box, which overcomes the above-mentioned shortcomings of the 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 external nickel electrowinning anode liquid overflow receiving box, comprising an anode liquid overflow pipe, an anode liquid overflow receiving box, and a suction pipe;

[0007] An anolyte overflow pipe is provided on the top of the anolyte overflow receiving box, the upper end of the anolyte overflow pipe extends above the anolyte overflow receiving box, and the lower end of the anolyte overflow pipe extends to the inner side of the anolyte overflow receiving box;

[0008] A suction pipe is provided on the top of the anode liquid overflow receiving box at the rear position of the anode liquid overflow pipe, the upper end of the suction pipe extends to the top of the anode liquid overflow receiving box, and the lower end of the suction pipe extends to the inside of the anode liquid overflow receiving box;

[0009] The length of the lower end of the suction pipe located inside the anode liquid overflow receiving box is greater than the length of the lower end of the anode liquid overflow pipe located inside the anode liquid overflow receiving box.

[0010] The above-mentioned anode liquid overflow pipe is arranged in an inverted "L" shape.

[0011] The above-mentioned anode liquid overflow receiving box is in the shape of a rectangular parallelepiped, and a sealing cover is sealed on the top of the anode liquid overflow receiving box. Two first and second pipe openings that penetrate vertically are arranged at intervals on the front and back of the sealing cover. The inner sides of the first and second pipe openings are both provided with internal threads, and the outer sides of the anode liquid overflow pipe and the suction pipe are both provided with external threads matching the internal threads. The anode liquid overflow pipe is threadedly connected to the inner side of the first pipe opening, and the suction pipe is threadedly connected to the inner side of the second pipe opening.

[0012] A suction corrugated hose is screwed onto the outer side of the top of the suction pipe via an external thread, and a negative pressure fan is arranged at one end of the suction corrugated hose away from the suction pipe.

[0013] The utility model connects an anode liquid overflow receiving box to the outside of the anode chamber, and the anode liquid in the anode chamber is discharged from the anode diaphragm bag through the anode liquid overflow pipe and enters the anode liquid overflow receiving box. The anode liquid overflow receiving box is provided with an internal insertion suction pipe, and the anode liquid in the anode liquid overflow receiving box is sucked by a negative pressure fan. When the anode liquid in the anode liquid overflow receiving box is sucked below the liquid level of the suction pipe, the acid mist in the anode chamber is sucked through the anode chamber overflow pipe, thereby realizing the pulsating suction of the anode liquid and the acid mist. Therefore, it is not necessary to open a hole in the side wall of the electrolysis tank to realize the suction of the anode liquid and the acid mist in the anode chamber, thereby solving the problem that the existing hole structure in the side wall of the electrolysis tank destroys the integrity of the electrolysis tank structure and affects the structural strength of the electrolysis tank, improving the structural strength of the electrolysis tank, and avoiding the solution leakage problem caused by the hole in the side wall of the electrolysis tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings.

[0015] Figure 1 It is a schematic diagram of the main structure of the utility model.

[0016] Figure 2 for Figure 1 Side view of.

[0017] Figure 3 This is a schematic diagram of the main structure of the utility model when connected to the anode chamber.

[0018] Figure 4 for Figure 3 Side view of.

[0019] Figure 5 The utility model is used when the anode liquid overflow receiving box is located in the electrolytic cell.

[0020] In the figure: 1-anode liquid overflow pipe, 2-anode liquid overflow receiving box, 3-suction pipe, 4-anode diaphragm frame, 5-suction corrugated hose, 6-negative pressure fan. DETAILED DESCRIPTION

[0021] 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.

[0022] The present invention is further described below in conjunction with the embodiments and drawings:

[0023] like Figure 1 As shown, an external nickel electrodeposition anolyte overflow receiving box comprises an anolyte overflow pipe 1, an anolyte overflow receiving box 2, and a suction pipe 3;

[0024] An anolyte overflow pipe 1 is provided on the top of the anolyte overflow receiving box 2, the upper end of the anolyte overflow pipe 1 extends above the anolyte overflow receiving box 2, and the lower end of the anolyte overflow pipe 1 extends to the inside of the anolyte overflow receiving box 2;

[0025] A suction pipe 3 is provided on the top of the anode liquid overflow receiving box 2 at the rear position of the anode liquid overflow pipe 1, the upper end of the suction pipe 3 extends to the top of the anode liquid overflow receiving box 2, and the lower end of the suction pipe 3 extends to the inside of the anode liquid overflow receiving box 2;

[0026] The length of the lower end of the suction pipe 3 located inside the anolyte overflow receiving box 2 is greater than the length of the lower end of the anolyte overflow pipe 1 located inside the anolyte overflow receiving box 2.

[0027] When in use, the device is installed on one side of the anode chamber, and the width of the anode liquid overflow receiving box 2 is the same as the width of the anode diaphragm frame 4, so as to ensure that the receiving box will not interfere with the operation of the cathode chamber, or will not be interfered with by the operation of the cathode chamber; the height of the anode liquid overflow receiving box 2 must ensure that there is a certain height difference between the overflow outlet of the anode liquid overflow pipe 1 in the anode chamber and the liquid level that can be stably maintained in the anode liquid overflow receiving box 2, so as to ensure that the anode liquid in the anode diaphragm bag can flow into the anode liquid overflow receiving box 2 stably and evenly.

[0028] The above-mentioned anolyte overflow pipe 1 is inserted from above the anolyte receiving box, and the insertion depth is relatively shallow, so that the anolyte overflows and enters the anolyte overflow receiving box 2; the anolyte overflow pipe 1 is arranged at the anolyte level line, and the anolyte flows out horizontally along the anolyte overflow pipe 1 and then enters the anolyte overflow receiving box 2 downward. The depth of the suction pipe 3 inserted into the anolyte overflow receiving box 2 is relatively deep, so as to ensure the height difference between the overflow outlet of the anolyte overflow pipe 1 and the liquid level of the anolyte in the anolyte overflow receiving box 2.

[0029] like Figure 1 As shown, the anolyte overflow pipe 1 is arranged in an inverted "L" shape. Thus, the anolyte can flow into the anolyte overflow pipe 1 by gravity and flow out to the inside of the anolyte overflow receiving box 2, thereby achieving stable and uniform discharge of the anolyte.

[0030] like Figure 1 As shown, the anolyte overflow receiving box 2 is a rectangular parallelepiped, and a sealing cover is sealed on the top of the anolyte overflow receiving box 2. Two first and second insertion openings are arranged at intervals on the top of the sealing cover, and the first and second insertion openings are both provided with internal threads on the inside. The anolyte overflow pipe 1 and the suction pipe 3 are both provided with external threads matching the internal threads on the outside. The anolyte overflow pipe 1 is threadedly connected to the inside of the first insertion opening, and the suction pipe 3 is threadedly connected to the inside of the second insertion opening. In this way, the anolyte overflow pipe 1 and the suction pipe 3 are connected, tightened and sealed to the anolyte overflow receiving box 2.

[0031] like Figure 1 As shown, a suction corrugated hose 5 is screwed to the outside of the top of the suction pipe 3 through an external thread, and a negative pressure fan 6 is provided at one end of the suction corrugated hose 5 away from the suction pipe 3. Thus, the negative pressure fan 6 is used to realize the pulsating suction of the anolyte and the acid mist.

[0032] During operation, the anode liquid level in the anode liquid overflow receiving box 2 shows a pulse-like fluctuation. The main reason is that after the anode liquid in the diaphragm bag overflows into the anode liquid overflow receiving box 2, the anode liquid level submerges the suction tube 3. The negative pressure fan 6 mainly sucks the anode liquid, and the anode liquid level in the receiving box drops to expose the suction tube 3. At this time, the suction tube 3 uses the anode liquid overflow receiving box 2 and the anode liquid overflow tube 1 to communicate with the anode chamber to suck the acid mist in the anode chamber; when the anode liquid continues to overflow into the anode liquid overflow receiving box 2, the anode liquid level in the anode liquid overflow receiving box 2 rises to submerge the suction tube 3, and the next pulse-like fluctuation process begins; the anode liquid suction process is very short and will not affect the suction of the acid mist.

[0033] In summary, the utility model connects an anode liquid overflow receiving box 2 to the outside of the anode chamber, and the anode liquid in the anode chamber is discharged from the anode diaphragm bag through the anode liquid overflow pipe 1 and enters the anode liquid overflow receiving box 2. The anode liquid overflow receiving box 2 is provided with an internal plug-in suction pipe 3, and the anode liquid in the anode liquid overflow receiving box 2 is sucked by a negative pressure fan 6. When the anode liquid in the anode liquid overflow receiving box 2 is sucked below the liquid level of the suction pipe 3, the acid mist in the anode chamber is sucked through the anode chamber overflow pipe, thereby realizing pulsating suction of the anode liquid and the acid mist. Therefore, it is not necessary to open a hole in the side wall of the electrolysis tank to realize the suction of the anode liquid and the acid mist in the anode chamber, which solves the problem that the existing hole structure in the side wall of the electrolysis tank destroys the integrity of the electrolysis tank structure and affects the structural strength of the electrolysis tank, improves the structural strength of the electrolysis tank, and avoids the solution leakage problem caused by the hole in the side wall of the electrolysis tank.

Claims

1. An external nickel electrodeposition anolyte overflow receiving box, characterized in that: It includes an anolyte overflow pipe, an anolyte overflow receiving box, and a suction pipe; An anolyte overflow pipe is provided on the top of the anolyte overflow receiving box, the upper end of the anolyte overflow pipe extends above the anolyte overflow receiving box, and the lower end of the anolyte overflow pipe extends to the inner side of the anolyte overflow receiving box; A suction pipe is provided on the top of the anode liquid overflow receiving box at the rear position of the anode liquid overflow pipe, the upper end of the suction pipe extends to the top of the anode liquid overflow receiving box, and the lower end of the suction pipe extends to the inside of the anode liquid overflow receiving box; The length of the lower end of the suction pipe located inside the anode liquid overflow receiving box is greater than the length of the lower end of the anode liquid overflow pipe located inside the anode liquid overflow receiving box.

2. The external nickel electrodeposition anolyte overflow receiving box according to claim 1, characterized in that: The anode liquid overflow pipe is arranged in an inverted "L" shape.

3. An external nickel electrodeposition anolyte overflow receiving box according to claim 1 or 2, characterized in that: The anode liquid overflow receiving box is in the shape of a rectangular parallelepiped, and a sealing cover is sealed on the top of the anode liquid overflow receiving box. Two first and second pipe openings that penetrate vertically are arranged at intervals on the front and back of the sealing cover. The inner sides of the first and second pipe openings are both provided with internal threads, and the outer sides of the anode liquid overflow pipe and the suction pipe are both provided with external threads matching the internal threads. The anode liquid overflow pipe is threadedly connected to the inner side of the first pipe opening, and the suction pipe is threadedly connected to the inner side of the second pipe opening.

4. An external nickel electrodeposition anolyte overflow receiving box according to claim 1 or 2, characterized in that: A suction corrugated hose is screwed on the outer side of the top of the suction pipe through an external thread, and a negative pressure fan is arranged at one end of the suction corrugated hose away from the suction pipe.

5. The external nickel electrodeposition anolyte overflow receiving box according to claim 3, characterized in that: A suction corrugated hose is screwed on the outer side of the top of the suction pipe through an external thread, and a negative pressure fan is arranged at one end of the suction corrugated hose away from the suction pipe.

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