Anti-corrosion method of cathode plate for zinc electrodeposition in hydrometallurgy

Abstract

The invention discloses an anti-corrosion method of a cathode plate for zinc electrodeposition in hydrometallurgy, and relates to the technical field of corrosion prevention of cathode plates. The method comprises the following steps: firstly, automatically carrying out roughing treatment on two side edges and a liquid level position of the cathode plate by using roughing equipment; then cleaning the surface of the negative plate by using a surface cleaning agent; then, the diluent and the ZL263 (A + B) colloid are used for brushing the negative plate for the second time; applying a high-molecular anti-corrosion material on the colloid; and then the negative plate is fixed and shaped by using a fixing transverse tool. According to the device, the two side edges and the liquid level of the negative plate are automatically subjected to roughening treatment by using the roughening equipment, so that a macromolecular anticorrosive material and the negative plate can be bonded more stably, and the negative plate to which the macromolecular anticorrosive material is applied can be fixed and shaped through the fixing transverse tool; therefore, the polymer anti-corrosion material is more tightly attached to the negative plate, and the anti-corrosion performance is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of cathode plate anti-corrosion, and in particular relates to an anti-corrosion method for cathode plates used in hydrometallurgical zinc electrowinning. Background Art

[0002] In the hydrometallurgical process, the cathode plate serves as the cathode of the electrolytic reaction and is responsible for receiving metal ions migrated from the electrolyte and reducing them to metal on the surface of the cathode plate. Since the cathode plate may be corroded during the electrolysis process, affecting its conductivity and metal deposition effect, the cathode plate must be subjected to anti-corrosion treatment. Anti-corrosion treatment helps to extend the service life of the cathode plate and ensure the stability of the electrolysis process and the efficiency of metal extraction.

[0003] In order to extend the service life of the cathode plate, it is usually necessary to coat an anti-corrosion insulating layer on its surface. However, with the continuous use of the cathode plate, the existing anti-corrosion insulating layer is easy to fall off, which will affect the service life and performance of the cathode plate.

[0004] To this end, we provide a method for anti-corrosion of cathode plates for hydrometallurgical zinc electrowinning to solve the above-mentioned problems. Summary of the invention

[0005] The purpose of the present invention is to provide an anti-corrosion method for cathode plates used in hydrometallurgical zinc electrowinning, which solves the problem of easy falling off of the insulating anti-corrosion layer of the existing cathode plate by using a roughening device to automatically roughen the two side edges and the liquid level of the cathode plate, and by fixing a horizontal fixture to fix and shape the cathode plate to which a polymer anti-corrosion material is applied.

[0006] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0007] The present invention is a method for preventing corrosion of cathode plates for hydrometallurgical zinc electrowinning, comprising the following steps:

[0008] S1. Use a roughening device to automatically roughen the two sides of the cathode plate and the liquid level;

[0009] S2. Clean the surface of the cathode plate using a surface cleaner;

[0010] S3, use diluent and ZL263 (A+B) colloid to apply two coats of paint to the cathode plate;

[0011] S4, applying polymer anti-corrosion material on the colloid;

[0012] S5. Use a fixed horizontal fixture to fix and shape the cathode plate.

[0013] The present invention is further configured such that the roughening device comprises a base frame, a side grinding assembly, a spacing adjustment assembly and a liquid level grinding assembly, the spacing adjustment assembly and the liquid level grinding assembly are both arranged on the top of the base frame, four supporting assemblies are arranged on the top of the spacing adjustment assembly, and the side grinding assembly is arranged on the top of the spacing adjustment assembly;

[0014] The side grinding assembly includes a first bracket, the outer side of the first bracket is fixedly connected to a lower driving motor, the inner side of the first bracket is rotatably connected to a lower rotating shaft, and the lower rotating shaft is fixedly connected to the output end of the lower driving motor, and the other end of the lower rotating shaft is fixedly connected to a lower grinding wheel, the inner side of the first bracket is movably sleeved with a slider, the inner side of the slider is rotatably connected to an upper rotating shaft, the outer side of the slider is fixedly connected to an upper driving motor, and the upper rotating shaft is fixedly connected to the output end of the upper driving motor, and the other end of the upper rotating shaft is fixedly connected to an upper grinding wheel;

[0015] The liquid level grinding assembly includes two second brackets, both of which are fixedly connected to the top of the base frame, the two second brackets are slidably connected to a sliding seat inside, the sliding seat is rotatably connected to an upper grinding roller inside, the side of the sliding seat is fixedly connected to a movable motor, and the upper grinding roller is fixedly connected to the output end of the movable motor, a lower grinding roller is rotatably connected between the two second brackets, the side of one of the second brackets is fixedly connected to a fixed motor, and the lower grinding roller is fixedly connected to the output end of the fixed motor.

[0016] The present invention is further configured such that a top cover is fixedly connected to the top of the first bracket, a first screw is sleeved on the internal thread of the top cover, and the first screw is rotatably connected to the top of the slider, and a first hand wheel is fixedly connected to the top of the first screw.

[0017] The present invention is further configured such that a sealing plate is fixedly connected to the top of the two second brackets, a second screw is sleeved on the internal thread of the sealing plate, and the second screw is rotatably connected to the inside of the sliding seat, and a second hand wheel is fixedly connected to the top of the second screw.

[0018] The present invention is further configured such that the spacing adjustment component includes two mounting plates, two first brackets are respectively fixedly connected to the tops of the two mounting plates, the bottoms of the two mounting plates are fixedly connected with threaded sleeves and multiple limit seats, and the limit seats are movably clamped in the interior of the base frame, the interior of the base frame is rotatably connected to two adjustment screws, and the threaded sleeves are threadedly sleeved on the outside of the corresponding adjustment screws, and the outsides of the two adjustment screws are fixedly connected with adjustment hand wheels.

[0019] The present invention is further configured such that the support assembly includes a fixed seat, the fixed seat is fixedly connected to the top of the mounting plate, an L-plate is fixedly connected to the inner side of the fixed seat, and a plurality of rollers are rotatably connected to the inner side of the L-plate.

[0020] The present invention is further configured that the fixed cross fixture includes a mounting base, two side fixtures, a top fixture and a moving assembly;

[0021] The installation base plate includes a bottom frame, and a fixing frame and two vertical plates are fixedly connected to the top of the bottom frame;

[0022] The side clamp includes a lower clamping plate, which is located at the top of the two vertical plates, the top of the lower clamping plate is fixedly connected to the side plate, the bottom of the lower clamping plate is fixedly connected to two first fixing sleeves, the outer part of the side plate is movably sleeved with an upper clamping plate, the inner part of the upper clamping plate is movably sleeved with two first fixing bolts, and the two first fixing bolts are respectively threadedly sleeved in the inner part of the corresponding first fixing sleeves;

[0023] The top clamp includes a fixed splint and a movable splint. The fixed splint is fixedly connected to the top of the bottom frame. The top of the bottom frame is fixedly connected to two second fixed sleeves. The movable splint has two second fixing bolts movably sleeved inside. The two second fixing bolts are respectively threadedly sleeved inside the corresponding second fixed sleeves.

[0024] The present invention is further configured such that the moving assembly includes two rotating seats, both rotating seats are fixedly connected to the top of the bottom frame, the two rotating seats are internally rotatably connected with a double-thread screw, both ends of the double-thread screw are fixedly connected with a third hand wheel, the bottoms of the two lower clamping plates are fixedly connected with a clamping plate, and the two clamping plates are threadedly sleeved on the outside of the double-thread screw.

[0025] The present invention is further configured such that the clamping plate is in an I-shape and is located between two vertical plates.

[0026] The present invention has the following beneficial effects:

[0027] 1. The present invention uses a roughening device to automatically roughen the two sides of the cathode plate and the liquid level. The roughening of the two sides of the cathode plate and the liquid level can make the adhesion between the polymer anti-corrosion material and the cathode plate more stable.

[0028] 2. The present invention can fix the cathode plate with the polymer anti-corrosion material applied thereon by means of a fixing horizontal fixture, and can apply pressure to the polymer anti-corrosion material, thereby making the polymer anti-corrosion material and the cathode plate fit more closely.

[0029] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0031] Figure 1 It is a process flow chart of the present invention.

[0032] Figure 2 It is a schematic diagram of the three-dimensional structure of the roughening equipment.

[0033] Figure 3 Schematic diagram of the bottom structure of the mounting plate.

[0034] Figure 4 A schematic diagram of the structure of the support assembly.

[0035] Figure 5 Schematic diagram of the exploded structure of the side grinding assembly.

[0036] Figure 6 Schematic diagram of the exploded structure of the liquid level grinding component.

[0037] Figure 7 It is a schematic diagram of the three-dimensional structure of the fixed horizontal tool.

[0038] Figure 8 Schematic diagram of the top fixture structure.

[0039] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0040] 100, bottom frame; 200, side grinding assembly; 201, first bracket; 202, lower shaft; 203, lower grinding wheel; 204, lower drive motor; 205, slider; 206, upper shaft; 207, upper grinding wheel; 208, upper drive motor; 209, top cover; 210, first screw rod; 211, first hand wheel; 300, spacing adjustment assembly; 301, mounting plate; 302, threaded sleeve; 303 , adjusting screw; 304, adjusting hand wheel; 305, limiting seat; 400, supporting assembly; 401, fixing seat; 402, L plate; 403, roller; 500, liquid level grinding assembly; 501, second bracket; 502, lower grinding roller; 503, fixed motor; 504, sliding seat; 505, upper grinding roller; 506, movable motor; 507, sealing plate; 508, second screw; 509, second hand wheel;

[0041] 600, installation base plate; 601, bottom frame; 602, vertical plate; 603, fixing frame; 700, side clamp; 701, lower clamp; 702, side plate; 703, upper clamp; 704, first fixing sleeve; 705, first fixing bolt; 800, top clamp; 801, fixed clamp; 802, movable clamp; 803, second fixed sleeve; 804, second fixing bolt; 900, moving assembly; 901, rotating seat; 902, double-thread screw; 903, clamping plate; 904, third hand wheel. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] Example 1

[0044] See also Figure 1 The present invention is a method for preventing corrosion of cathode plates for hydrometallurgical zinc electrowinning, comprising the following steps:

[0045] S1. Use a roughening device to automatically roughen the two sides of the cathode plate and the liquid surface. The roughening of the two sides of the cathode plate and the liquid surface can make the polymer anti-corrosion material more stable when bonded to the cathode plate.

[0046] S2. Clean the surface of the cathode plate with a surface cleaner to remove fine debris and dirt on the surface of the cathode plate;

[0047] S3. Use diluent and ZL263 (A+B) colloid to apply two coats of paint to the cathode plate. The use of diluent and ZL263 (A+B) colloid can increase the stability of adhesion.

[0048] S4. Applying a polymer anti-corrosion material on the colloid, the polymer anti-corrosion material can protect the surface of the cathode plate to prevent the surface of the cathode plate from being corroded;

[0049] S5. Use a fixing horizontal fixture to fix the cathode plate. The fixing horizontal fixture can be used to fix the cathode plate with the polymer anti-corrosion material applied thereon, and can apply pressure to the polymer anti-corrosion material, thereby making the polymer anti-corrosion material and the cathode plate fit more closely.

[0050] Example 2

[0051] See also Figure 2-6On the basis of the specific embodiment 1, the roughening device includes a base frame 100, a side grinding assembly 200, a spacing adjustment assembly 300 and a liquid level grinding assembly 500, the spacing adjustment assembly 300 and the liquid level grinding assembly 500 are both arranged on the top of the base frame 100, four supporting assemblies 400 are arranged on the top of the spacing adjustment assembly 300, and the side grinding assembly 200 is arranged on the top of the spacing adjustment assembly 300;

[0052] The side grinding assembly 200 includes a first bracket 201, the outer side of the first bracket 201 is fixedly connected to a lower driving motor 204, the inner side of the first bracket 201 is rotatably connected to a lower rotating shaft 202, and the lower rotating shaft 202 is fixedly connected to the output end of the lower driving motor 204, the other end of the lower rotating shaft 202 is fixedly connected to a lower grinding wheel 203, the inner side of the first bracket 201 is movably sleeved with a slider 205, the inner side of the slider 205 is rotatably connected to an upper rotating shaft 206, the outer side of the slider 205 is fixedly connected to an upper driving motor 208, and the upper rotating shaft 206 is fixedly connected to the output end of the upper driving motor 208, the other end of the upper rotating shaft 206 is fixedly connected to an upper grinding wheel 207, and the side of the cathode plate can be ground by quickly rotating the upper grinding wheel 207 and the lower grinding wheel 203;

[0053] The liquid level grinding assembly 500 includes two second brackets 501, and the two second brackets 501 are fixedly connected to the top of the base frame 100. The two second brackets 501 are internally slidably connected to a sliding seat 504, and the sliding seat 504 is internally rotatably connected to an upper grinding roller 505, and the side of the sliding seat 504 is fixedly connected to a movable motor 506, and the upper grinding roller 505 is fixedly connected to the output end of the movable motor 506. A lower grinding roller 502 is rotatably connected between the two second brackets 501, and the side of one of the second brackets 501 is fixedly connected to a fixed motor 503, and the lower grinding roller 502 is fixedly connected to the output end of the fixed motor 503. The liquid level of the cathode plate can be ground by the rapid rotation of the lower grinding roller 502 and the upper grinding roller 505.

[0054] Specifically, a top cover 209 is fixedly connected to the top of the first bracket 201, a first screw rod 210 is sleeved on the inner thread of the top cover 209, and the first screw rod 210 is rotatably connected to the top of the slider 205, and a first hand wheel 211 is fixedly connected to the top of the first screw rod 210;

[0055] The tops of the two second brackets 501 are fixedly connected with a sealing plate 507, the inner threads of the sealing plate 507 are sleeved with a second screw 508, and the second screw 508 is rotatably connected to the inside of the sliding seat 504, and the top of the second screw 508 is fixedly connected with a second hand wheel 509, and the spacing between the upper grinding wheel 207 and the lower grinding wheel 203 and the lower grinding roller 502 and the upper grinding roller 505 can be adjusted by rotating the first hand wheel 211 and the second hand wheel 509, so that the cathode plates of different thicknesses can be ground;

[0056] The spacing adjustment assembly 300 includes two mounting plates 301, and the two first brackets 201 are respectively fixedly connected to the tops of the two mounting plates 301, and the bottoms of the two mounting plates 301 are fixedly connected with threaded sleeves 302 and multiple limit seats 305, and the limit seats 305 are movably clamped in the interior of the base frame 100, and the interior of the base frame 100 is rotatably connected to two adjustment screws 303, and the threaded sleeves 302 are threadedly sleeved on the outside of the corresponding adjustment screws 303, and the outsides of the two adjustment screws 303 are fixedly connected with adjustment hand wheels 304, and the spacing of the two side grinding assemblies 200 can be adjusted by rotating the adjustment hand wheels 304, so that cathode plates of different widths can be ground.

[0057] Furthermore, the support assembly 400 includes a fixed base 401, which is fixedly connected to the top of the mounting plate 301, an L-plate 402 is fixedly connected to the inner side of the fixed base 401, and a plurality of rollers 403 are rotatably connected to the inner side of the L-plate 402, and the resistance to the movement of the cathode plate can be reduced by the plurality of rollers 403.

[0058] The operation process of this embodiment is as follows: when it is necessary to grind the two side edges and the liquid level surface of the cathode plate, firstly, the spacing between the upper grinding wheel 207 and the lower grinding wheel 203 and the lower grinding roller 502 and the upper grinding roller 505 can be adjusted by rotating the first hand wheel 211 and the second hand wheel 509, and then the corresponding adjusting screw 303 can be driven to rotate by rotating the two adjusting hand wheels 304, so that the spacing between the two mounting plates 301 can be adjusted according to the width of the cathode plate, and then the lower driving motor 204 and the upper driving motor 208 are started, and then the lower driving motor 204 and the upper driving motor 208 respectively drive the lower grinding wheel 203 and the upper grinding wheel 207, and then the fixing motor 50 is started. 3 and the movable motor 506 respectively drive the lower grinding roller 502 and the upper grinding roller 505, and then place the cathode plate on the corresponding two L plates 402, and then push the cathode plate forward. When the cathode plate passes through the lower grinding wheel 203 and the upper grinding wheel 207, the side of the cathode plate can be polished by the rapid rotation of the upper grinding wheel 207 and the lower grinding wheel 203, and then continue to push the cathode plate forward so that the cathode plate enters between the lower grinding roller 502 and the upper grinding roller 505, so that the liquid level of the cathode plate can be polished, so that the two sides of the cathode plate and the liquid level can be quickly polished, thereby making the polymer anti-corrosion material and the cathode plate more stably bonded.

[0059] Example 3

[0060] See also Figure 7-8 , based on the specific embodiment 1 and the specific embodiment 2, the fixed horizontal fixture includes a mounting base 600, two side fixtures 700, a top fixture 800 and a moving assembly 900;

[0061] The installation base plate 600 includes a bottom frame 601, and a fixing frame 603 and two vertical plates 602 are fixedly connected to the top of the bottom frame 601;

[0062] The side clamp 700 includes a lower clamping plate 701, which is located at the top of the two vertical plates 602, the top of the lower clamping plate 701 is fixedly connected to the side plate 702, the bottom of the lower clamping plate 701 is fixedly connected to two first fixing sleeves 704, the outer part of the side plate 702 is movably sleeved with an upper clamping plate 703, the inner part of the upper clamping plate 703 is movably sleeved with two first fixing bolts 705, and the two first fixing bolts 705 are respectively threadedly sleeved in the corresponding first fixing sleeves 704, and the upper clamping plate 703 can be fixed and clamped to the side of the cathode plate by rotating the two first fixing bolts 705, so that the polymer anti-corrosion material can be more closely attached to the side of the cathode plate;

[0063] The top clamp 800 includes a fixed clamp 801 and a movable clamp 802. The fixed clamp 801 is fixedly connected to the top of the bottom frame 601. The top of the bottom frame 601 is fixedly connected to two second fixed sleeves 803. The movable clamp 802 is internally movably sleeved with two second fixing bolts 804, and the two second fixing bolts 804 are respectively threadedly sleeved into the corresponding second fixed sleeves 803. By rotating the two second fixing bolts 804, the movable clamp 802 can clamp the polymer anti-corrosion material at the liquid level of the cathode plate, so that the polymer anti-corrosion material can fit more closely with the liquid level of the cathode plate.

[0064] Specifically, the movable assembly 900 includes two rotating seats 901, and the two rotating seats 901 are fixedly connected to the top of the bottom frame 601. The two rotating seats 901 are internally rotatably connected with a double-thread screw 902, and both ends of the double-thread screw 902 are fixedly connected with a third hand wheel 904. The bottoms of the two lower clamps 701 are fixedly connected with a clamping plate 903, and the two clamping plates 903 are threadedly sleeved on the outside of the double-thread screw 902. By rotating the third hand wheel 904, the spacing between the two side clamps 700 can be adjusted, so that cathode plates of different widths can be fixed.

[0065] Furthermore, the clamping plate 903 is in an I-shape, and the clamping plate 903 is located between the two vertical plates 602 .

[0066] The operation process of this embodiment is as follows: when the cathode plate needs to be fixed, first, the double-thread screw 902 is driven by rotating the third hand wheel 904, and then the two lower clamps 701 can be driven to move under the action of the thread, so that the spacing of the movement of the two lower clamps 701 can be adjusted according to the size of the cathode plate, and then the cathode plate is placed on the top of the two lower clamps 701 and the fixed clamp 801, and then the upper clamp 703 is installed above the lower clamp 701, and then the two first fixing bolts 705 are rotated to fix and clamp the side of the cathode plate, and then the movable clamp 802 is installed above the fixed clamp 801, and then the two second fixing bolts 804 are rotated to clamp the cathode plate by the movable clamp 802, and the cathode plate can be fixed by squeezing the upper clamp 703 and the movable clamp 802, and a certain pressure can be applied to the polymer anti-corrosion material, so that the polymer anti-corrosion material and the cathode plate fit more closely.

[0067] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0068] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A method for anticorrosion of cathode plates for hydrometallurgical zinc electrowinning, characterized in that: The following steps are involved: S1. Use a roughening device to automatically roughen the two sides of the cathode plate and the liquid level; S2. Clean the surface of the cathode plate using a surface cleaner; S3, use diluent and ZL263 (A+B) colloid to apply two coats of paint to the cathode plate; S4, applying polymer anti-corrosion material on the colloid; S5. Use a fixed horizontal fixture to fix and shape the cathode plate.

2. The anticorrosion method for cathode plates for hydrometallurgical zinc electrowinning according to claim 1, characterized in that: The roughening device comprises a base frame (100), a side grinding assembly (200), a spacing adjustment assembly (300) and a liquid level grinding assembly (500); the spacing adjustment assembly (300) and the liquid level grinding assembly (500) are both arranged on the top of the base frame (100); four supporting assemblies (400) are arranged on the top of the spacing adjustment assembly (300); and the side grinding assembly (200) is arranged on the top of the spacing adjustment assembly (300); The side grinding assembly (200) comprises a first bracket (201), the outer side of the first bracket (201) is fixedly connected to a lower driving motor (204), the interior of the first bracket (201) is rotatably connected to a lower rotating shaft (202), and the lower rotating shaft (202) is fixedly connected to the output end of the lower driving motor (204), the other end of the lower rotating shaft (202) is fixedly connected to a lower grinding wheel (203), the interior of the first bracket (201) is movably sleeved with a slider (205), the interior of the slider (205) is rotatably connected to an upper rotating shaft (206), the outer side of the slider (205) is fixedly connected to an upper driving motor (208), and the upper rotating shaft (206) is fixedly connected to the output end of the upper driving motor (208), and the other end of the upper rotating shaft (206) is fixedly connected to an upper grinding wheel (207); The liquid level grinding assembly (500) comprises two second brackets (501), the two second brackets (501) are fixedly connected to the top of the base frame (100), the two second brackets (501) are slidably connected to a sliding seat (504) inside, the sliding seat (504) is rotatably connected to an upper grinding roller (505) inside, the side of the sliding seat (504) is fixedly connected to a movable motor (506), and the upper grinding roller (505) is fixedly connected to the output end of the movable motor (506), and a lower grinding roller (502) is rotatably connected between the two second brackets (501), the side of one of the second brackets (501) is fixedly connected to a fixed motor (503), and the lower grinding roller (502) is fixedly connected to the output end of the fixed motor (503).

3. The anticorrosion method for cathode plates for hydrometallurgical zinc electrowinning according to claim 2, characterized in that: The top of the first bracket (201) is fixedly connected to a top cover (209), the internal thread of the top cover (209) is sleeved with a first screw rod (210), and the first screw rod (210) is rotatably connected to the top of the slider (205), and the top of the first screw rod (210) is fixedly connected to a first hand wheel (211).

4. The anticorrosion method for cathode plates for hydrometallurgical zinc electrowinning according to claim 2, characterized in that: The tops of the two second brackets (501) are fixedly connected with a sealing plate (507), the internal thread of the sealing plate (507) is sleeved with a second screw rod (508), and the second screw rod (508) is rotatably connected to the inside of the sliding seat (504), and the top of the second screw rod (508) is fixedly connected with a second hand wheel (509).

5. The anticorrosion method for cathode plates for hydrometallurgical zinc electrowinning according to claim 2, characterized in that: The spacing adjustment assembly (300) comprises two mounting plates (301), the two first brackets (201) are respectively fixedly connected to the tops of the two mounting plates (301), the bottoms of the two mounting plates (301) are fixedly connected with threaded sleeves (302) and a plurality of limit seats (305), and the limit seats (305) are movably clamped in the interior of the base frame (100), the interior of the base frame (100) is rotatably connected with two adjustment screws (303), and the threaded sleeves (302) are threadedly sleeved on the outside of the corresponding adjustment screws (303), and the outsides of the two adjustment screws (303) are fixedly connected with adjustment hand wheels (304).

6. The anticorrosion method for cathode plates for hydrometallurgical zinc electrowinning according to claim 5, characterized in that: The support assembly (400) comprises a fixing seat (401), wherein the fixing seat (401) is fixedly connected to the top of the mounting plate (301), an L-plate (402) is fixedly connected to the inner side of the fixing seat (401), and a plurality of rollers (403) are rotatably connected to the inner side of the L-plate (402).

7. The anticorrosion method for cathode plates for hydrometallurgical zinc electrowinning according to claim 1, characterized in that: The fixed horizontal fixture comprises a mounting base plate (600), two side clamps (700), a top clamp (800) and a moving assembly (900); The installation base plate (600) comprises a bottom frame (601), and a fixing frame (603) and two vertical plates (602) are fixedly connected to the top of the bottom frame (601); The side clamp (700) includes a lower clamp (701), the lower clamp (701) is located on the top of the two vertical plates (602), the top of the lower clamp (701) is fixedly connected to the side plate (702), the bottom of the lower clamp (701) is fixedly connected to two first fixing sleeves (704), the outer part of the side plate (702) is movably sleeved with an upper clamp (703), the inner part of the upper clamp (703) is movably sleeved with two first fixing bolts (705), and the two first fixing bolts (705) are respectively threadedly sleeved in the corresponding first fixing sleeves (704); The top clamp (800) includes a fixed clamp (801) and a movable clamp (802), wherein the fixed clamp (801) is fixedly connected to the top of the bottom frame (601), and the top of the bottom frame (601) is fixedly connected to two second fixed sleeves (803), and the movable clamp (802) is internally movably sleeved with two second fixing bolts (804), and the two second fixing bolts (804) are respectively threadedly sleeved into the inside of the corresponding second fixing sleeves (803).

8. The anticorrosion method for cathode plates for hydrometallurgical zinc electrowinning according to claim 7, characterized in that: The moving assembly (900) comprises two rotating seats (901), the two rotating seats (901) are fixedly connected to the top of the bottom frame (601), the two rotating seats (901) are internally rotatably connected to a double-thread screw (902), both ends of the double-thread screw (902) are fixedly connected to a third hand wheel (904), the bottoms of the two lower clamping plates (701) are fixedly connected to a clamping plate (903), and the two clamping plates (903) are threadedly sleeved on the outside of the double-thread screw (902).

9. The anticorrosion method for cathode plates for hydrometallurgical zinc electrowinning according to claim 8, characterized in that: The clamping plate (903) is in an I-shape, and the clamping plate (903) is located between the two vertical plates (602).

Images