An insoluble anode

Abstract

The utility model discloses an insoluble anode, including conducting row and the conducting hole of opening in conducting row, the bottom fixed reinforcement rib frame of conducting row has at least two layers of corrosion -resistant metal net in the fixed reinforcement rib frame, through adopting multilayer corrosion -resistant metal net as anode, rigidity is good, and anode effective area is big, and because multilayer corrosion -resistant metal net anode structure effective area reduces the anode current density of increasing, reduces the tank voltage, reduces the electric energy consumption, improves anode service life, and reduces production cost.

Description

Technical Field

[0001] This utility model relates to the technical field of electrowinning, electrolysis and electrodialysis, and specifically to an insoluble anode. Background Technology

[0002] Insoluble anodes, also known as inert anodes, are electrodes that do not participate in the chemical reaction during electrolysis (i.e., they are not dissolved or consumed). Their primary function is to transmit current, allowing anions in the solution to discharge at the anode surface, thereby generating substances such as oxygen and chlorine. Insoluble anodes are fundamental materials in modern electrochemical industry, mainly used in electroplating, hydrometallurgy, wastewater treatment, and the chlor-alkali industry. Currently, the insoluble anodes used in electrowinning processes are mostly lead dioxide, ruthenium-iridium-titanium, etc., with a single-layer corrosion-resistant metal mesh structure. This type of single-layer anode allows for low current density during use and has disadvantages such as easy coating peeling, high cell voltage, and high energy consumption. Utility Model Content

[0003] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of the present invention, to avoid obscuring the purpose of these documents, and such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0004] Therefore, the purpose of this utility model is to provide an insoluble anode by using a multi-layer corrosion-resistant metal mesh as the insoluble anode structure. The multi-layer mesh structure replaces the current single-layer mesh structure, which has good rigidity and a large effective area. Due to the increase in the effective area, the current density is reduced, the cell voltage is reduced, the power consumption is reduced, the service life of the insoluble anode is improved, and the production cost is reduced.

[0005] To solve the above-mentioned technical problems, this utility model provides an insoluble anode, which adopts the following technical solution: it includes a conductive bus and conductive holes opened on the conductive bus, the periphery of the conductive bus is fixed with a reinforcing rib frame, and at least two layers of corrosion-resistant metal mesh are fixed inside the reinforcing rib frame.

[0006] Optionally, the conductive busbar is a corrosion-resistant metal-clad copper-based conductive busbar.

[0007] Optionally, the reinforcing rib frame is made of corrosion-resistant metal, and the reinforcing rib frame is welded to the conductive busbar.

[0008] Optionally, at least two layers of corrosion-resistant metal mesh are welded inside the reinforcing rib frame. These corrosion-resistant metal meshes are all independent mesh structures, and at least two layers of corrosion-resistant metal mesh form an integral structure.

[0009] Optionally, the corrosion-resistant metal mesh is composed of a plurality of first corrosion-resistant metal mesh wires and second corrosion-resistant metal mesh wires, wherein the first corrosion-resistant metal mesh wires and second corrosion-resistant metal mesh wires are in a cross-interwoven structure, and the cross-interwoven first corrosion-resistant metal mesh wires and second corrosion-resistant metal mesh wires form a plurality of grids.

[0010] In summary, this utility model has at least one of the following beneficial effects: This invention uses a multi-layer corrosion-resistant metal mesh as the insoluble anode, which has good rigidity and a large effective area. Due to the increased effective area, the current density is reduced, the cell voltage is lowered, the power consumption is reduced, the service life of the insoluble anode is increased, and the production cost is reduced. Attached Figure Description

[0011] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This utility model Figure 1 A schematic diagram of the AA cross-sectional structure; Figure 3 This utility model Figure 1 A magnified structural diagram of part B.

[0013] Explanation of reference numerals in the attached drawings: 1. Conductive busbar; 2. Conductive hole; 3. Reinforcing rib frame; 4. Corrosion-resistant metal mesh; 401. First corrosion-resistant metal mesh wire; 402. Second corrosion-resistant metal mesh wire; 403. Mesh. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0015] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or 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 this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0016] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or a welding connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0017] Example 1

[0018] Reference Figures 1-3 This utility model discloses an insoluble anode, including a conductive busbar 1 and conductive holes 2 opened on the conductive busbar 1. A reinforcing frame 3 is fixed to the bottom of the conductive busbar 1, and at least two layers of corrosion-resistant metal mesh 4 are fixed inside the reinforcing frame 3.

[0019] In detail, in this embodiment, the conductive bus 1 is a corrosion-resistant copper-clad conductive bus 1. The reinforcing rib frame 3 is a corrosion-resistant metal reinforcing rib frame, and the reinforcing rib frame 3 is welded to the conductive bus 1. At least two layers of corrosion-resistant metal mesh 4 are welded inside the reinforcing rib frame 3. The at least two layers of corrosion-resistant metal mesh 4 include one corrosion-resistant metal mesh 4 as the main layer, and other layers of corrosion-resistant metal mesh 4 are welded to one or more sub-layers of corrosion-resistant metal mesh (of the same material as the main body, such as titanium) on one or both sides of the main layer, thereby obtaining two, three or more layers of multi-layer corrosion-resistant metal mesh 4 anodes.

[0020] In detail, in this embodiment, three layers of corrosion-resistant metal mesh 4 are welded inside the reinforcing rib frame 3.

[0021] In detail, in this embodiment, the corrosion-resistant metal mesh 4 is composed of a plurality of first corrosion-resistant metal mesh wires 401 and second corrosion-resistant metal mesh wires 402. The first corrosion-resistant metal mesh wires 401 and second corrosion-resistant metal mesh wires 402 are in a cross-woven structure, and the cross-woven structure of the first corrosion-resistant metal mesh wires 401 and second corrosion-resistant metal mesh wires 402 forms a plurality of meshes 403. This mesh structure 403 ensures the optimal specific surface area of ​​the corrosion-resistant metal mesh 4, which can reduce the current density used during electrolysis, reduce the cell voltage of electrolysis, and improve the service life of the product.

[0022] One or more corrosion-resistant metal mesh sub-layers (of the same material as the main layer) are added to one or both sides of the substrate layer (main layer) by welding, thereby obtaining a multilayer plate anode with two, three or more layers, which is the novel insoluble anode structure described in this invention.

[0023] The core of this invention is a multi-layer board with two, three, or more layers. Test data for tank voltage under the same process conditions are: single-layer corrosion-resistant metal mesh 4: 5.0V, double-layer corrosion-resistant metal mesh 4: 4.8V, and triple-layer corrosion-resistant metal mesh 4: 4.2V. Currently, the market commonly uses single-layer or single-layer corrugated metal mesh. In comparison, the multi-layer corrosion-resistant metal mesh 4 has better anode rigidity and a larger effective area. Due to the increased effective anode area, the current density is reduced, the tank voltage is lowered, energy consumption is reduced, the service life of the insoluble anode is increased, and production costs are reduced.

[0024] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.

Claims

1. An insoluble anode, characterized in that: It includes a conductive bus (1) and conductive holes (2) opened on the conductive bus (1). The bottom of the conductive bus (1) is fixed with a reinforcing frame (3), and at least two layers of corrosion-resistant metal mesh (4) are fixed inside the reinforcing frame (3).

2. The insoluble anode according to claim 1, characterized in that: The conductive bus (1) is a corrosion-resistant metal-clad copper conductive bus (1).

3. The insoluble anode according to claim 1, characterized in that: The reinforcing rib frame (3) is made of corrosion-resistant metal and is welded to the conductive busbar (1).

4. The insoluble anode according to claim 1, characterized in that: At least two layers of corrosion-resistant metal mesh (4) are welded inside the reinforcing frame (3).

5. An insoluble anode according to claim 1, characterized in that: The corrosion-resistant metal mesh (4) is composed of a number of first corrosion-resistant metal mesh wires (401) and second corrosion-resistant metal mesh wires (402). The first corrosion-resistant metal mesh wires (401) and second corrosion-resistant metal mesh wires (402) are in a cross-woven structure. The first corrosion-resistant metal mesh wires (401) and second corrosion-resistant metal mesh wires (402) in the cross-woven structure form a number of grids (403).

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