Cathode seed plate in electrodeposition process
By setting tightening holes on the cathode type plate, the problems of skin bursting and peeling of the starting electrode sheet are solved, the efficiency of the electrodistribution process is improved and metal waste is reduced, and efficient electrodistribution production is achieved.
Patent Information
- Application Number
- CN202422303774.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-20
- Publication Date
- 2025-07-29
- Estimated Expiration
- 2034-09-20
AI Technical Summary
In the traditional nickel electrolysis process, the metal starting electrode sheet formed by the electrolysis of the seed plate is prone to bursting, cracking and the starting electrode sheet is not easy to peel off, which affects the current efficiency of the electrolysis process and increases the operation volume, resulting in metal waste and delays in production time.
A tightening hole through the surface of the plate is provided on the cathode plate, and the positioning and tightening function is provided through the tightening hole, so that the metal maintains a bonding force during the electrodischarge process, suppresses the skin of the starting electrode sheet and local disengagement, and facilitates subsequent peeling.
The bonding force between the starting electrode sheet and the plate body is improved, the skin bursting and disengagement phenomenon is suppressed, the labor intensity of manual neat plate operations is reduced, the production efficiency and current efficiency of the electroplastic process are improved, and metal waste and production costs are reduced.
Smart Images
Figure CN223163512U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technology of metal electrowinning process, and particularly to a cathode starter sheet in an electrowinning process. Background Art
[0002] Electrowinning (also known as electrodeposition) is a common technology in hydrometallurgical electrolytic refining for producing non-ferrous metals. For example, in the production of metallic nickel by electrowinning, the nickel electrowinning process is one of the main methods for producing metallic nickel. The production of metallic nickel by electrowinning is divided into a sulfuric acid system and a chloride system.
[0003] (1) Sulfuric Acid System
[0004] The sulfuric acid system uses a nickel sulfate (NiSO4) solution as the raw material. In the electrowinning cell, the following redox reaction occurs under the action of direct current:
[0005] Cathode reaction: Ni2+ + 2e = Ni (metallic nickel)
[0006] Anode reaction: 2H2O - 4e = O2 + 4H+
[0007] That is, metallic nickel is produced at the cathode, namely electrowon nickel. Acid (H+ combines with sulfate) and oxygen are produced at the anode.
[0008] (2) Chloride System
[0009] The chloride system uses a nickel chloride (NiCl2) solution as the raw material. In the electrowinning cell, the following redox reaction occurs under the action of direct current:
[0010] Cathode reaction: Ni2+ + 2e = Ni (metallic nickel)
[0011] Anode reaction: 2Cl- - 2e = Cl2 (chlorine gas)
[0012] That is, metallic nickel is produced at the cathode, namely electrowon nickel. Chlorine gas is produced at the anode.
[0013] The current traditional nickel electrowinning production process is as follows:
[0014] The electrowinning cell is divided into a starter sheet electrowinning cell and a starting sheet electrowinning cell. First, electrowinning is carried out in the starter sheet electrowinning cell to produce nickel plates. Then, the nickel plates are taken out and processed into starting sheets. Then, the starting sheets are put into the starting sheet electrowinning cell to continue electrowinning to produce metallic nickel products.
[0015] At present, in the traditional nickel electrowinning process, the cathode plates in the seeding electrowinning tank are generally made of metal titanium plates, titanium alloy plates, or stainless steel plates, which are the so-called seeding plates. In the seeding electrowinning tank, electrolysis is generally carried out for 24 to 48 hours. When the thickness of the nickel plate reaches 0.3 mm to 0.8 mm, the cathode plate (seeding plate) is taken out, and the nickel plate is peeled off from the cathode plate (seeding plate), then cut, flattened, punched, and lugs are installed to make the cathode plate, that is, the starter sheet.
[0016] The starter sheet is placed in the starter sheet electrowinning tank to continue the electrolysis to produce nickel plates. Since the starter sheet is very thin, less than 1.0 mm thick, it will bend and deform during the continuous electrolysis process in the electrowinning tank, affecting the current efficiency of the electrolysis process and the progress of the electrolysis process. In the current traditional nickel electrowinning process, in order to reduce the influence of the bending and deformation of the starter sheet during the electrolysis process, the whole plate operation must be carried out when the starter sheet is placed in the electrowinning tank for electrolysis, that is, the cathode plate is taken out of the electrowinning tank, and the deformed cathode plate is leveled manually, and then put back into the electrowinning tank to continue electrolysis. Generally, each cathode plate needs to be leveled at least once. The whole plate operation is generally carried out when the starter sheet is placed in the electrowinning tank for electrolysis, and is carried out after continuous electrolysis for 30 to 90 hours.
[0017] The following problems exist in the current industry: During the electrolysis process of the seeding plate (i.e., the production process of the starter sheet), the metal nickel (i.e., the starter sheet) formed by electrolysis is prone to peeling and cracking, and may be partially or completely separated from the seeding plate, which will increase the operation volume of the subsequent whole plate process. In addition, it will also cause waste of some metals, delay the production time, and affect the normal progress of the production process; in addition, after the electrolysis of the seeding plate is completed, the starter sheet on the seeding plate needs to be peeled off. Summary of the Invention
[0018] The purpose of this application is to propose a cathode seeding plate in the electrolysis process to solve the problems of peeling and cracking of the metal (starter sheet) formed by electrolysis of the seeding plate and the difficulty of peeling the starter sheet in the existing traditional electrolysis process.
[0019] A cathode seeding plate in an electrolysis process includes a conductive rod and a plate body connected to the conductive rod; one or several tension holes penetrating the surface of the plate body are arranged on the surface of the plate body, and the metal generated on the plate body is positioned and tensioned by the tension holes, so that the metal generated on each surface of the plate body adheres to the corresponding surface of the plate body through the bonding force.
[0020] In some embodiments, one or several tension holes are arranged inside the edge of the plate body.
[0021] In some embodiments, one or several tension holes are arranged in the middle of the plate body.
[0022] In some embodiments, the shape of the tension hole is rectangular.
[0023] In some embodiments, the shape of the tension hole is circular.
[0024] In some embodiments, the shapes of the tension holes are rectangular and circular.
[0025] In some embodiments, the distance from the tension hole near the edge of the plate body to the edge of the plate body is 10 mm - 100 mm.
[0026] In some embodiments, the distance between adjacent tension holes is 20 mm - 200 mm.
[0027] The beneficial effects are as follows: By providing the tension holes, the positioning and tensioning functions are provided by the tension holes to enhance the bonding force between the starter sheet and the plate body (i.e., the mother plate), thereby suppressing the phenomena of the starter sheet peeling, cracking, or even partially detaching from the mother plate during the electrowinning (i.e., the production of the starter sheet) process, and the produced starter sheet is easy to peel off from the plate body, facilitating the subsequent whole-plate process. BRIEF DESCRIPTION OF THE DRAWINGS
[0028] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.
[0029] Figure 1 It is the front view of Embodiment 1 of the present application.
[0030] Figure 2 It is the front view of Embodiment 2 of the present application.
[0031] Figure 3 It is the front view of Embodiment 3 of the present application.
[0032] Figure 4 It is the front view of Embodiment 4 of the present application.
[0033] Figure 5 It is the front view of Embodiment 5 of the present application.
[0034] Figure 6 It is the front view of Embodiment 6 of the present application.
[0035] Figure 7 It is the front view of Embodiment 7 of the present application.
[0036] Explanation of the reference numerals in the drawings:
[0037] 1. Conductive bar; 2. Plate body; 3. Tension hole. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0038] In order to make the objectives, technical solutions and advantages of the present application clearer and more understandable, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are some, but not all, embodiments of the present application, and are only used to explain the present application, rather than to limit the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts belong to the scope of protection of the present application.
[0039] In the description of the present application, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "inner", "outer", "both ends", "both sides", "bottom", "top", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present application. In addition, the terms "first", "second", "superior", "inferior", "main", "secondary", etc. are only used for descriptive purposes, and can be simply used to more clearly distinguish different components, rather than indicating or implying relative importance.
[0040] In the description of the present application, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection, it can be a mechanical connection, an electrical connection, a direct connection, or an indirect connection through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.
[0041] A cathode seed plate in an electrowinning process includes a conductive rod 1 and a plate body 2 connected to the conductive rod 1; one or several tension holes 3 penetrating the surface of the plate body 2 are provided on the surface of the plate body 2, and the metal generated on the plate body 2 is positioned and tensioned by the tension holes 3, so that the metal generated on each surface of the plate body 2 adheres to the corresponding surface of the plate body 2 through the bonding force. During the electrowinning process, as metal ions on the plate body 2 are reduced, the metal is electrodeposited on the two plate surfaces of the plate body 2 and in the tension holes 3, and the metal electrodeposited in the tension holes 3 connects the metal electrodeposited on the two plate surfaces of the plate body 2, and tightens like a pin.
[0042] Preferably, one or several tension holes 3 are provided on the inner side of the edge of the plate body 2.
[0043] Preferably, one or several tension holes 3 are provided in the middle of the plate body 2.
[0044] Preferably, the shape of the tension hole 3 is rectangular.
[0045] Preferably, the shape of the tension hole 3 is circular.
[0046] Preferably, the shape of the tension hole 3 is rectangular and circular.
[0047] By providing the tension hole 3, the metals that do not contact each other on the two original plates during electrowinning are connected to each other through the tension hole 3. Thus, during the electrowinning process, the metals on the two plates are tightened with each other through the bonding force, thereby suppressing phenomena such as exfoliation, cracking, and partial detachment from the seed plate of the electrodeposited metal during the electrowinning process. In addition, long-term electrowinning of the electrowinning seed plate can be achieved, and the labor intensity of workers can be reduced, and the production efficiency of the electrowinning process can be improved. The produced starting sheet has a lower cost and a higher current efficiency.
[0048] Among them, the diameter D of the circular tension hole 3 is Φ1.0 mm - Φ10 mm, preferably Φ3.0 mm - Φ5.0 mm.
[0049] The length L of the rectangular tension hole 3 is 10 mm - 100 mm, preferably L = 10 mm - 30 mm. The width B of the rectangular hole is 1 mm - 10 mm, preferably B = 2 mm - 5 mm. The long side of the rectangular tension hole 3 is parallel to the edge line of the cathode plate adjacent to it.
[0050] As Figure 1 shown, in this embodiment, several circular tension holes 3 are arranged at equal intervals around the plate body 2. The distance from the tension hole 3 to the surface edge of the plate body 2 is 10 mm - 100 mm, preferably 20 mm - 60 mm. The distance between adjacent tension holes 3 is 20 mm - 200 mm, preferably 30 mm - 100 mm.
[0051] As Figure 2 shown, in this embodiment, several rectangular tension holes 3 are arranged at equal intervals around the plate body 2. The distance from the tension hole 3 to the surface edge of the plate body 2 is 10 mm - 100 mm, preferably 20 mm - 60 mm. The distance between adjacent tension holes 3 is 20 mm - 200 mm, preferably 30 mm - 60 mm.
[0052] As Figure 3 shown, in this embodiment, several rectangular tension holes 3 are arranged at equal intervals around the plate body 2, and a rectangular surface is further provided inside the plate body 2. Several circular tension holes 3 are arranged at equal intervals around the rectangular surface. The distance from the tension holes 3 around the plate body 2 to the surface edge of the plate body 2 is 10 mm - 100 mm, preferably 20 mm - 60 mm. The distance between adjacent tension holes 3 is 20 mm - 200 mm, preferably 30 mm - 100 mm.
[0053] As Figure 4As shown, in this embodiment, several circular tension holes 3 are equidistantly arranged around the plate body 2, and a rectangular surface is further provided inside the plate body 2. Several circular tension holes 3 are equidistantly arranged around this rectangular surface. The distance from the tension holes 3 around the plate body 2 to the surface edge of the plate body 2 = 10 mm - 100 mm, preferably 20 mm - 60 mm. The distance between adjacent tension holes 3 = 20 mm - 200 mm, preferably 30 mm - 100 mm.
[0054] As Figure 5 shown, in this embodiment, several rectangular tension holes 3 are equidistantly arranged around the plate body 2, and a rectangular surface is further provided inside the plate body 2. Several rectangular tension holes 3 are equidistantly arranged around this rectangular surface. The distance from the tension holes 3 around the plate body 2 to the surface edge of the plate body 2 = 10 mm - 100 mm, preferably 20 mm - 60 mm. The distance between adjacent tension holes 3 = 20 mm - 200 mm, preferably 30 mm - 60 mm.
[0055] As Figure 6 shown, in this embodiment, several rectangular tension holes 3 are equidistantly arranged around the plate body 2, and a circular surface is further provided inside the plate body 2. Several circular tension holes 3 are equidistantly arranged around this circular surface. The distance from the tension holes 3 around the plate body 2 to the surface edge of the plate body 2 = 10 mm - 100 mm, preferably 20 mm - 60 mm. The distance between adjacent tension holes 3 = 20 mm - 200 mm, preferably 30 mm - 60 mm.
[0056] As Figure 7 shown, in this embodiment, several circular tension holes 3 are equidistantly arranged around the plate body 2, and a circular surface is further provided inside the plate body 2. Several circular tension holes 3 are equidistantly arranged around this circular surface. The distance from the tension holes 3 around the plate body 2 to the surface edge of the plate body 2 = 10 mm - 100 mm, preferably 20 mm - 60 mm. The distance between adjacent tension holes 3 = 20 mm - 200 mm, preferably 30 mm - 100 mm.
[0057] It should be noted that the shape of the tension holes 3 can be adjusted according to actual needs and is not limited to circular and rectangular shapes. The cathode seed plates in this electrowinning process are commonly used in the production of, including but not limited to, metallic nickel, and can also be used for the electrowinning production of other metals.
[0058] The above are only some embodiments of the present application, which are only used to illustrate the technical solutions of the present application and are not intended to limit it. It should be understood that for those of ordinary skill in the art, without departing from the creative concept of the present application, improvements or replacements can be made according to the above description, and all such improvements and replacements should fall within the protection scope of the appended claims of the present application. In this case, all details can be replaced with equivalent elements, and the materials, shapes and sizes can also be arbitrary.
Claims
1. A cathode seed plate in an electrowinning process, characterized in that, It includes a conductive rod (1) and a plate body (2) connected to the conductive rod (1); one or several tension holes (3) penetrating the surface of the plate body (2) are provided on the surface of the plate body (2), and the metal generated on the plate body (2) is positioned and tightened by the tension holes (3), so that the metal generated on each surface of the plate body (2) adheres to the corresponding surface of the plate body (2) through the bonding force.
2. The cathode seed plate in an electrowinning process according to claim 1, characterized in that, One or several tension holes (3) are provided inside the edge of the plate body (2).
3. The cathode starter sheet in an electrowinning process according to claim 2, characterized in that, One or several tension holes (3) are provided in the middle of the plate body (2).
4. A cathode seed plate in an electrowinning process according to any one of claims 1 to 3, characterized in that, The shape of the tension hole (3) is rectangular.
5. A cathode starter sheet in an electrowinning process according to any one of claims 1 to 3, characterized in that, The shape of the tension hole (3) is circular.
6. A cathode starter sheet in an electrowinning process according to any one of claims 1 to 3, characterized in that, The shape of the tension hole (3) is rectangular and circular.
7. A cathode starter sheet in an electrowinning process according to any one of claims 2 to 3, characterized in that, The distance from the tension hole (3) near the edge of the plate body (2) to the edge of the plate body (2) is 10 mm - 100 mm.
8. The cathode seed plate in an electrowinning process according to claim 7, characterized in that, The distance between adjacent tension holes (3) is 20 mm - 200 mm.