A multi-electrode cathode device for magnesium electrolysis

Abstract

The utility model provides a multi-electrode cathode device for magnesium electrolysis, comprising: a carbon steel electrode working surface, a cathode support plate, a special-shaped cathode knife handle and a cathode aluminum spraying contact surface, wherein: the cathode support plate is arranged in the carbon steel electrode working surface, one end of the special-shaped cathode knife handle is welded on the carbon steel electrode working surface, and the other end is provided with a cathode aluminum spraying contact surface. The utility model solves the voltage drop loss caused by the contact between the aluminum material and the carbon steel plate knife handle, and improves the manufacturing qualification rate.

Description

Technical Field

[0001] The utility model relates to the technical field of magnesium electrolysis, in particular to a multi-electrode tank cathode device for magnesium electrolysis. Background Art

[0002] In the production of magnesium electrolytic multi-electrode tanks, the cathode devices currently used at home and abroad are welded with steel-aluminum composite plates. The steel-aluminum composite joints are welded with dissimilar metal materials, which has particularly high requirements for welding equipment and low pass rate. In addition, the rectangular handle structure is used. When the main busbar elevation error occurs, it is difficult to solve the installation problem with the soft busbar. Therefore, most of the existing magnesium electrolytic multi-electrode tank cathode designs have problems such as difficult welding, low pass rate, expensive joints, and difficult installation. Summary of the invention

[0003] According to the technical problems raised above, a multi-electrode cathode device for magnesium electrolysis is provided. The utility model mainly utilizes the carbon steel electrode working surface, cathode support plate, special-shaped cathode handle and cathode aluminum spraying contact surface to solve the voltage drop loss caused by the contact between aluminum and carbon steel plate handle, and improves the manufacturing qualification rate.

[0004] The technical means adopted by the utility model are as follows:

[0005] A multi-electrode tank cathode device for magnesium electrolysis, comprising: a carbon steel electrode working surface, a cathode support plate, a special-shaped cathode handle and a cathode aluminum spraying contact surface, wherein:

[0006] The cathode support plate is arranged in the carbon steel electrode working surface, one end of the special-shaped cathode knife handle is welded to the carbon steel electrode working surface, and the other end is provided with a cathode aluminum spraying contact surface.

[0007] Furthermore, the cathode support plate is fixed in the carbon steel electrode working surface by plug welding.

[0008] Furthermore, the special-shaped cathode knife handle and the carbon steel electrode working surface are in the same plane, the special-shaped structure adopted by the special-shaped cathode knife handle is determined according to the busbar elevation, and the current cross-sectional area of ​​the special-shaped cathode knife handle is constant.

[0009] Furthermore, the special-shaped cathode knife handle and the carbon steel electrode working surface are made of the same carbon steel material.

[0010] Furthermore, the cathode aluminum spraying contact surface is processed by using an aluminum spraying process.

[0011] Furthermore, a cathode soft busbar installation opening is arranged on the cathode aluminum spraying contact surface, and the cathode soft busbar installation opening is arranged as an elliptical hole.

[0012] Furthermore, the magnesium electrolysis multi-electrode tank cathode device also includes a cathode magnesium outlet, which is arranged on a side of the carbon steel electrode working surface away from the special-shaped cathode tool handle.

[0013] Compared with the prior art, the utility model has the following advantages:

[0014] The magnesium electrolysis multi-electrode tank cathode device provided by the utility model eliminates the steel-aluminum composite joint, reduces the manufacturing cost, improves the manufacturing qualification rate, and is suitable for installation requirements under different conditions.

[0015] The magnesium electrolysis multi-electrode slot cathode device provided by the utility model solves the voltage drop loss caused by the contact between aluminum and a carbon steel plate handle. The device adopts a method of spraying an aluminum layer on the working contact surface of the carbon steel plate handle to avoid unreasonable voltage drop loss caused by contact surfaces of different materials.

[0016] Based on the above reasons, the utility model can be widely promoted in the field of magnesium electrolysis technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 It is a schematic structural diagram of the multi-electrode tank cathode device for magnesium electrolysis in the utility model.

[0019] Figure 2 It is a schematic diagram of the cathode magnesium outlet in the utility model.

[0020] In the figure: 1. Carbon steel electrode working surface; 2. Cathode support plate; 3. Cathode magnesium outlet; 4. Special-shaped cathode knife handle; 5. Cathode aluminum spraying contact surface; 6. Cathode soft busbar installation port. DETAILED DESCRIPTION

[0021] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0022] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings 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. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. 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.

[0023] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0024] Unless otherwise specifically stated, the relative arrangement of the parts and steps described in these embodiments, the numerical expressions and numerical values ​​do not limit the scope of the present invention. At the same time, it should be clear that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0025] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention: the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0026] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below their position devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0027] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0028] like Figure 1 As shown, the utility model provides a multi-electrode tank cathode device for magnesium electrolysis, comprising: a carbon steel electrode working surface 1, a cathode support plate 2, a special-shaped cathode knife handle 4 and a cathode aluminum spraying contact surface 5, wherein:

[0029] The cathode support plate 2 is arranged in the carbon steel electrode working surface 1, one end of the special-shaped cathode knife handle 4 is welded on the carbon steel electrode working surface 1, and the other end is provided with a cathode aluminum spraying contact surface 5.

[0030] In specific implementation, as a preferred embodiment, the cathode support plate 2 is fixed in the carbon steel electrode working surface 1 by plug welding to prevent the carbon steel electrode working surface from being deformed in large quantities during the manufacturing process.

[0031] During implementation, the carbon steel electrode working surface 1 is symmetrical on both sides.

[0032] During specific implementation, as a preferred embodiment, the special-shaped cathode knife handle 4 and the carbon steel electrode working surface 1 are in the same plane, and the special-shaped cathode knife handle 4 adopts a special-shaped structure determined according to the busbar elevation, and the current cross-sectional area of ​​the special-shaped cathode knife handle 4 is constant to ensure the current load.

[0033] During implementation, in order to ensure the contact cross-sectional area of ​​the electrode handle, the special-shaped cathode handle 4 is processed by upward bending to meet the installation requirements of different elevations.

[0034] In specific implementation, as a preferred embodiment, the special-shaped cathode knife handle 4 and the carbon steel electrode working surface 1 are made of the same carbon steel material.

[0035] In specific implementation, as a preferred embodiment, the cathode aluminum spraying contact surface 5 is processed by using an aluminum spraying process.

[0036] During implementation, the handle body is cut to a depth of 2 mm on the cathode aluminum spraying contact surface 5 by a milling machine, and then a special aluminum spraying coating method is used to ensure the contact voltage drop.

[0037] In specific implementation, as a preferred embodiment, a cathode soft busbar installation opening 6 is provided on the cathode aluminum spraying contact surface 5, and the cathode soft busbar installation opening 6 is an elliptical hole setting, which is radially adjustable to meet the installation difficulty caused by its installation error.

[0038] During implementation, in order to ensure that the contact pressure drop between the soft busbar and the tool handle meets the requirements, a carbon steel sprayed aluminum layer is used for processing. At the same time, in order to ensure that the error caused by on-site installation is solved by a radially adjustable mounting hole.

[0039] In specific implementation, as a preferred embodiment, the magnesium electrolysis multi-electrode tank cathode device also includes a cathode magnesium outlet 3, which is arranged on a side of the carbon steel electrode working surface 1 away from the special-shaped cathode handle 4.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A multi-electrode cathode device for magnesium electrolysis, characterized in that: include: A carbon steel electrode working surface (1), a cathode support plate (2), a special-shaped cathode knife handle (4) and a cathode aluminum spraying contact surface (5), wherein: The cathode support plate (2) is arranged inside the carbon steel electrode working surface (1); one end of the special-shaped cathode knife handle (4) is welded to the carbon steel electrode working surface (1); and the other end is provided with a cathode aluminum spraying contact surface (5).

2. The multi-electrode cathode device for magnesium electrolysis according to claim 1, characterized in that: The cathode support plate (2) is fixed in the carbon steel electrode working surface (1) by plug welding.

3. The multi-electrode cathode device for magnesium electrolysis according to claim 1, characterized in that: The special-shaped cathode knife handle (4) and the carbon steel electrode working surface (1) are in the same plane, the special-shaped structure adopted by the special-shaped cathode knife handle (4) is determined according to the busbar elevation, and the current cross-sectional area of ​​the special-shaped cathode knife handle (4) is constant.

4. The multi-electrode cathode device for magnesium electrolysis according to claim 1, characterized in that: The special-shaped cathode knife handle (4) and the carbon steel electrode working surface (1) are made of the same carbon steel material.

5. The multi-electrode cathode device for magnesium electrolysis according to claim 1, characterized in that: The cathode aluminum spraying contact surface (5) is processed by using an aluminum spraying process.

6. The multi-electrode cathode device for magnesium electrolysis according to claim 1, characterized in that: The cathode aluminum spraying contact surface (5) is provided with a cathode soft busbar installation opening (6), and the cathode soft busbar installation opening (6) is provided as an elliptical hole.

7. The multi-electrode cathode device for magnesium electrolysis according to claim 1, characterized in that: The magnesium electrolysis multi-electrode tank cathode device also includes a cathode magnesium outlet (3) which is arranged on a side of the carbon steel electrode working surface (1) away from the special-shaped cathode knife handle (4).

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