Anode diaphragm frame capable of realizing nickel electrodeposition anode bagging technology

Abstract

The utility model relates to the technical field of metallurgical equipment, in particular to an anode diaphragm frame capable of realizing a nickel electrodeposition anode bagging technology, which comprises a lower diaphragm frame, an outer sleeve diaphragm bag, an upper diaphragm cover and an anolyte suction pipe, an outer sleeve diaphragm bag is sleeved outside the lower diaphragm frame, and an upper diaphragm cover is arranged at the top of the lower diaphragm frame; an anolyte suction pipe is arranged on the inner side of the outer sleeve diaphragm bag, and the upper end of the anolyte suction pipe extends to the upper side outside the upper diaphragm cover through the left side inside the upper diaphragm cover; the right side of the upper diaphragm cover is provided with an internally and externally through acid mist absorption pipe orifice; a nickel electrodeposition anode area is sealed through a lower diaphragm frame, an upper diaphragm cover and an outer sleeve diaphragm bag, and oxygen which is generated by an anode and can carry acid mist during dissipation is discharged through an acid mist absorption pipe opening formed in the upper diaphragm cover; the lower diaphragm frame can seal an anode area in the nickel electrodeposition production process, acid mist can be collected and treated in a centralized mode through the technology, and the problem that the field operation environment is poor is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of metallurgical equipment, in particular to an anode diaphragm frame capable of realizing a nickel electrodeposition anode bagging technology. 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, in the nickel electrowinning production process, surfactants such as sodium dodecyl sulfate and pore inhibitors are generally added to form fine and rich foam covering the tank surface, thereby inhibiting the overflow of acid mist and improving the environment. However, the above additives have limited inhibitory effects on the acid mist generated in the production process, and the amount of additives added is not easy to stably control. Excessive additives will cause a large amount of foam to spread on the surface of the electrolytic solution. The wet foam will cause the anode and cathode to be connected, affecting the normal production organization of nickel electrowinning; insufficient additives will result in poor acid mist suppression effect and deterioration of the working environment. In order to protect the physical and mental health of employees, the working environment in the nickel electrowinning plant needs certain physical measures to improve. Utility Model Content

[0004] The utility model provides an anode diaphragm frame capable of realizing nickel electrodeposition anode bagging technology, which overcomes the shortcomings of the above-mentioned prior art and can effectively solve the problem of poor on-site working environment caused by the absence of an anode area sealing device in the prior nickel electrodeposition production device, which enables direct discharge of acid mist from the anode area.

[0005] In order to solve the above problems, the utility model discloses an anode diaphragm frame capable of realizing nickel electrodeposition anode bagging technology, comprising a lower diaphragm frame, an outer diaphragm bag, an upper diaphragm cover, and an anode liquid suction pipe;

[0006] An outer diaphragm bag is mounted on the outside of the lower diaphragm frame, and an upper diaphragm cover is arranged on the top of the lower diaphragm frame; an anode liquid suction pipe is arranged on the inside of the outer diaphragm bag, and the upper end of the anode liquid suction pipe extends through the left side of the upper diaphragm cover to the upper side of the outside of the upper diaphragm cover; an acid mist absorption pipe opening that passes through the inside and outside of the upper diaphragm cover is arranged on the right side of the upper diaphragm cover.

[0007] The above also includes a diaphragm clamp, and the upper diaphragm cover is composed of two symmetrical parts; a slot is provided on the lower outer side of each upper diaphragm cover, and the diaphragm clamp fixes the two upper diaphragm covers together through the two slots; a fastening plate is provided on the top of each upper diaphragm cover, and the fastening plates at relatively positions of the two parts are fixed together by fastening bolts.

[0008] A liquid level detection float is arranged on the left side inside the upper diaphragm cover.

[0009] The utility model realizes the closed treatment of the anode area of ​​nickel electrowinning through the lower diaphragm frame, the upper diaphragm cover and the outer diaphragm bag. The cathode liquid enters the electrowinning tank from the cathode liquid pipeline at the end of the electrowinning tank. By using the appropriate flow rate of the cathode and cathode liquids, the cathode liquid level can be controlled to be 30-50mm higher than the anode liquid level. The cathode liquid uses the static pressure difference to penetrate into the anode liquid area through the outer diaphragm bag. The anode liquid is sucked from the bottom of the outer diaphragm bag by the anode liquid suction pipe attached to the lower diaphragm frame. In this way, the anode liquid with high acid content can be controlled in the anode area; the oxygen generated by the anode and accompanied by acid mist when escaping is passed through the upper diaphragm cover. The acid mist absorption pipe opening (the acid mist absorption pipe opening is set at a higher position on the upper diaphragm cover to prevent the anode liquid from flowing into the acid mist absorption pipe opening) collects the acid mist in a centralized manner through the micro-negative pressure generated by the environmental protection fan and treats it before discharging it after meeting the standards; the liquid level detection float in the upper diaphragm cover can judge whether the outer jacket diaphragm bag is damaged or leaking according to the anode liquid level, so as to solve the problem of damage to the outer jacket diaphragm bag, back-seepage of the anode liquid into the cathode liquid, and contamination of the cathode liquid (mainly the hydrogen ions in the anode liquid). The lower diaphragm frame can realize the sealing of the anode area during the nickel electrowinning production process. By adopting this technology, the acid mist can be collected and treated in a centralized manner to solve the problem of poor on-site working environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings.

[0011] Figure 1 It is a schematic diagram of the front view and side view of the structure of an embodiment of the utility model.

[0012] Figure 2 It is a schematic diagram of the front and side views of the structure of the lower diaphragm frame in the embodiment of the utility model.

[0013] Figure 3 It is a schematic diagram of the front and side views of the upper diaphragm cover in an embodiment of the utility model.

[0014] Figure 4 It is a schematic diagram of the front and side views of the outer jacket diaphragm bag in the embodiment of the utility model.

[0015] Figure 5 It is a schematic diagram of the front and side views of the diaphragm clamp in the embodiment of the utility model.

[0016] In the figure: 1-lower diaphragm frame, 2-outer diaphragm bag, 3-upper diaphragm cover, 4-anolyte suction pipe, 5-acid mist absorption pipe mouth, 6-diaphragm clamp, 7-fastening plate, 8-liquid level detection buoy. DETAILED DESCRIPTION

[0017] 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.

[0018] The present invention is further described below in conjunction with the embodiments and drawings:

[0019] like Figure 1-5 As shown, an anode diaphragm frame capable of realizing nickel electrodeposition anode bagging technology comprises a lower diaphragm frame 1, an outer diaphragm bag 2, an upper diaphragm cover 3, and an anode liquid suction pipe 4;

[0020] An outer diaphragm bag 2 is mounted on the outside of the lower diaphragm frame 1, and an upper diaphragm cover 3 is arranged on the top of the lower diaphragm frame 1; an anode liquid suction pipe 4 is arranged on the inner side of the outer diaphragm bag 2, and the upper end of the anode liquid suction pipe 4 extends through the left side of the upper diaphragm cover 3 to the upper side of the outside of the upper diaphragm cover 3; an acid mist absorption pipe opening 5 that passes through the inside and outside of the upper diaphragm cover 3 is arranged on the right side of the upper diaphragm cover 3.

[0021] Among them, the main function of the lower diaphragm frame 1 is to provide support for the diaphragm bag on the outside; the lower diaphragm frame 1 is made of fiberglass and is equipped with transverse and longitudinal support rods to ensure its overall strength; the upper transverse support rod is widened, mainly considering the connection and fixation with the upper support cover; the transverse and longitudinal support rods cannot be too wide or too thick, and only need to meet their supporting strength to ensure that the overall permeability performance of the outer diaphragm bag 2 is not affected.

[0022] The inner diameter of the outer diaphragm bag 2 is basically consistent with the outer diameter of the lower diaphragm frame 1, so that the outer diaphragm bag 2 can fit closely along the outer side of the lower diaphragm frame 1; the material of the outer diaphragm bag 2 is pure polyester or polyester-cotton blended; the permeability of the outer diaphragm bag 2 is 6-12L / m 2 .h.

[0023] Among them, the anode liquid suction pipe 4 is located at one end of the outer side of the upper diaphragm cover 3 and is provided with a quick connector, which is connected to the quick connector on the anode liquid main pipe by means of the quick connector and the corrugated hose. The anode liquid relies on the negative pressure in the anode liquid middle tank (a negative pressure fan is provided to provide a stable negative pressure for the anode liquid middle tank) to suck the anode liquid from the bottom of the outer diaphragm bag 2 to realize the flow and discharge of the anode liquid.

[0024] Among them, the anode liquid suction pipe 4 located on the inner side of the lower diaphragm frame 1 can be inserted into the bottom of the outer diaphragm bag 2 or slightly submerge the anode liquid level, and the depth of its insertion into the outer diaphragm bag 2 is related to the position where the cathode liquid enters the electrolysis cell; if the cathode liquid is introduced from the upper part of the electrolysis cell, the anode liquid suction pipe 4 needs to be inserted into the bottom of the outer diaphragm bag 2 to form an external circulation mode of top-in and bottom-out; if the cathode liquid is introduced from the bottom of the electrolysis cell, the anode liquid suction pipe 4 only needs to slightly submerge the anode liquid level, thus forming an external circulation mode of bottom-in and top-out.

[0025] Among them, the acid mist absorption pipe mouth 5 is provided with a quick interface, which is connected to the quick interface on the acid mist absorption main pipe by using the quick interface and corrugated hose; the acid mist absorption main pipe is connected to the existing acid mist absorption device, and the acid mist in the anode diaphragm bag is sucked by the acid mist absorption fan to collect and treat the acid mist in the anode diaphragm bag.

[0026] By arranging the anode liquid suction pipe 4 and the acid mist absorption pipe opening 5 on the left and right sides of the upper diaphragm cover 3, the two pipe openings are arranged separately to avoid the influence of gas blockage and liquid blockage formed when the acid mist and liquid are sucked from the same pipeline on the stability of the solution or acid mist during suction, avoid mutual interference between liquid and gas, achieve stable and uniform suction of acid mist and anode liquid, and ensure stable and controllable production.

[0027] like Figure 1 , 3 As shown, it also includes a diaphragm clamp 6, and the upper diaphragm cover 3 is composed of two symmetrical parts; a groove is provided on the lower outer side of each upper diaphragm cover 3, and the diaphragm clamp 6 fixes the two upper diaphragm covers 3 together through the two grooves; a fastening plate 7 is provided on the top of each upper diaphragm cover 3, and the fastening plates 7 at the relative positions of the two parts are fixed together by fastening bolts.

[0028] The diaphragm clamp 6 is made of metal material, such as 3mm thick 316L stainless steel, which is resistant to corrosion caused by electrolytic liquid accumulation. The main function of the diaphragm clamp 6 is to fasten and fix the lower part of the upper diaphragm cover 3 of the two parts with bolts to achieve sealing.

[0029] The upper diaphragm cover 3 is composed of two symmetrical parts, which are buckled together to form a "lid" to form a relatively closed anode area with the diaphragm frame of the lower outer diaphragm bag 2.

[0030] Among them, a 1mm deep slot is set at the lower position of the upper diaphragm cover 3 to facilitate the fixation of the diaphragm clamp 6; 4 fastening plates 7 are set at the upper position, and reserved holes are set at the same position of the fastening plates 7. The reserved holes should be larger than the diameter of the fastening bolts. When fastening, rubber pads are set at the reserved holes of the fastening plates 7, and fastening bolts made of non-metallic materials are used for fastening to avoid leakage; the upper diaphragm cover 3 of the two parts is sealed by the upper fastening plate 7 and the lower diaphragm clamp 6. The upper diaphragm cover 3 and the lower diaphragm frame 1 are made of the same material, both of which are made of fiberglass.

[0031] like Figure 1 , 3 As shown, a liquid level detection float 8 is provided on the left side of the upper diaphragm cover 3. Thus, the liquid level of the anode liquid in the anode chamber is detected. When the outer diaphragm bag 2 is damaged or leaking, the anode liquid level will rise, which can be discovered in time by the liquid level detection float 8.

[0032] The utility model realizes the closed treatment of the anode area of ​​nickel electrowinning through the lower diaphragm frame 1, the upper diaphragm cover 3 and the outer diaphragm bag 2. The cathode liquid enters the electrowinning tank from the cathode liquid pipeline at the end of the electrowinning tank. By using the appropriate flow rate of the cathode and cathode liquid, the cathode liquid level can be controlled to be 30-50mm higher than the anode liquid level. The cathode liquid uses the static pressure difference to penetrate into the anode liquid area through the outer diaphragm bag 2. The anode liquid is sucked from the bottom of the outer diaphragm bag 2 by the anode liquid suction pipe 4 attached to the lower diaphragm frame 1. In this way, the anode liquid with high acid content can be controlled in the anode area; the oxygen generated by the anode and accompanied by acid mist when escaping passes through the acid provided in the upper diaphragm cover 3. The mist absorption pipe opening 5 (the acid mist absorption pipe opening 5 is arranged at a higher position of the upper diaphragm cover 3 to prevent the anode liquid from flowing into the acid mist absorption pipe opening 5) collects the acid mist in a centralized manner through the micro-negative pressure generated by the environmental protection fan and treats it before discharging it after meeting the standards; the liquid level detection float 8 in the upper diaphragm cover 3 can judge whether the outer jacket diaphragm bag 2 is damaged or leaking according to the anode liquid level, so as to solve the problem of damage to the outer jacket diaphragm bag 2, back-seepage of the anode liquid into the cathode liquid, and contamination of the cathode liquid (mainly the hydrogen ions in the anode liquid); the lower diaphragm frame 1 can realize the sealing of the anode area in the nickel electrowinning production process. By adopting this technology, the acid mist can be collected and treated in a centralized manner, so as to solve the problem of poor on-site working environment.

Claims

1. An anode diaphragm frame capable of realizing nickel electrodeposition anode bagging technology, characterized in that: It includes a lower diaphragm frame, an outer diaphragm bag, an upper diaphragm cover, and an anolyte suction pipe; An outer diaphragm bag is mounted on the outside of the lower diaphragm frame, and an upper diaphragm cover is arranged on the top of the lower diaphragm frame; an anode liquid suction pipe is arranged on the inside of the outer diaphragm bag, and the upper end of the anode liquid suction pipe extends through the left side of the upper diaphragm cover to the upper side of the outside of the upper diaphragm cover; an acid mist absorption pipe opening that passes through the inside and outside of the upper diaphragm cover is arranged on the right side of the upper diaphragm cover.

2. The anode diaphragm frame capable of realizing nickel electrodeposition anode bagging technology according to claim 1, characterized in that: It also includes a diaphragm clamp, and the upper diaphragm cover is composed of two symmetrical parts; a groove is provided on the lower outer side of each upper diaphragm cover, and the diaphragm clamp fixes the two upper diaphragm covers together through the two grooves; a fastening plate is provided on the top of each upper diaphragm cover, and the fastening plates at opposite positions of the two parts are fixed together by fastening bolts.

3. An anode diaphragm frame capable of realizing nickel electrodeposition anode bagging technology according to claim 1 or 2, characterized in that: A liquid level detection float is provided on the left side inside the upper diaphragm cover.

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