Tellurium electrolytic refining anode

Abstract

This utility model discloses a tellurium electrolytic refining anode, relating to the field of 4N tellurium production technology, which solves the problems of existing plate electrodes, such as numerous cathode particles, large anode sludge production, and high anode corrosion replacement costs. The anode consists of an anode body and conductive strips. The anode body has a grid structure, with the grid composed of cubic stainless steel strips of equal length and spacing. The conductive strips are made of stainless steel with copper plating, and have concave screw holes on their inner circumferential surfaces. Both ends are milled to form contact surfaces for connection with the conductive busbar. The anode body and conductive strips are fixed together through the concave screw holes, which reduces anode side reactions, significantly reduces anode sludge production, avoids cathode particle generation, improves product quality, ensures conductivity, avoids corrosion contamination, and reduces operating costs. The copper material ensures excellent conductivity, while the outer stainless steel plating layer prevents product contamination caused by conductive strip corrosion during electrowinning, and also enhances the structural stability of the anode.

Description

Technical Field

[0001] This utility model relates to the field of 4N tellurium production technology, and in particular to a tellurium electrolytic refining anode. Background Technology

[0002] In existing technologies, when producing 4N refined tellurium using electrolytic refining, plate-type stainless steel plates are often used as the anode and cathode. However, this type of plate electrode has the following problems during the electrowinning process: (1) A large amount of anode mud particles will be generated on the cathode plate during electrolysis, which requires manual cleaning, increases the workload, and affects product quality; (2) The anode mud production is large and easily adheres to the surface of the anode plate, making it difficult to clean and resulting in low tellurium direct recovery rate; (3) The anode plate needs to be replaced as a whole after corrosion, which results in high usage costs. Utility Model Content

[0003] To address the shortcomings of existing technologies, this invention provides a tellurium electrolytic refining anode, which solves the technical problems of numerous cathode plate particles, large anode mud production, and high anode corrosion replacement costs in existing tellurium electrowinning technologies.

[0004] To achieve the above objectives, this utility model provides the following technical solution: A tellurium electrolytic refining anode, wherein the tellurium electrolytic refining anode is composed of an anode body and conductive strips; The anode body has a grid structure, and the grid is composed of stainless steel strips of the same length and equal spacing.

[0005] Preferred spacing: The distance between adjacent stainless steel strips is 80-200mm.

[0006] Preferably, the cross-section of the stainless steel strip is square.

[0007] Preferably, the conductive strip has a concave screw hole on its inner circumferential surface.

[0008] Preferably, the conductive strip is made of copper and has a stainless steel plating on the outside. The conductive strip has contact surfaces at both ends. The contact surfaces are formed by milling a stainless steel sleeve to expose a solid copper rod for connection with the conductive busbar.

[0009] Preferably, the anode body and the conductive strip are connected and fixed by a concave screw hole.

[0010] Compared with the prior art, the present invention has the following beneficial effects: Its simple structure makes it easy to manufacture and replace, reducing production and maintenance costs; The anode body adopts a long cubic grid structure, which can reduce the occurrence of anode side reactions during electrodeposition, significantly reduce the amount of anode mud, and at the same time avoid the generation of cathode particles, thus improving the product quality of cathode-deposited tellurium. The conductive strip is made of stainless steel with copper plating. The copper material ensures excellent conductivity, while the outer stainless steel plating layer avoids product contamination caused by corrosion of the conductive strip during electrowinning. It also enhances the structural stability of the anode. The anode mud has less adhesion and is easier to clean, which improves the direct recovery rate of tellurium and reduces the cost of manual cleaning. Attached Figure Description

[0011] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0012] Figure 1 This is a structural diagram of the present invention; Figure 2 This is a structural diagram of the concave screw hole in this utility model.

[0013] Illustration: 1. Anode body; 2. Conductive strip; 3. Stainless steel strip; 4. Concave screw hole; 5. Contact surface. Detailed Implementation

[0014] This application provides a tellurium electrolytic refining anode, which effectively solves the technical problems of numerous cathode plate particles, large anode mud production, and high anode corrosion replacement costs in existing tellurium electrowinning technology.

[0015] like Figure 1 and Figure 2 As shown, the overall technical solution of this application is as follows: To address the problems existing in the prior art, this utility model provides a tellurium electrolytic refining anode, which consists of an anode body 1 and conductive strips 2. The anode body 1 has a grid structure, and the grid is composed of stainless steel strips 3 of the same size. The stainless steel strips 3 are 628mm long, 10mm wide, and 10mm high, and the spacing between each pair of adjacent stainless steel strips 3 is 140mm (this spacing is in the range of 80-200mm).

[0016] The conductive strip 2 is made of stainless steel-clad copper, with a solid copper rod inside and a stainless steel layer on the outside. The copper material enhances conductivity, while the outer stainless steel layer enhances the anode's resistance to deformation. Both ends of the conductive strip 2 are milled to remove a portion of the stainless steel sleeve covering the solid copper rod, exposing a section of the solid copper rod to form a contact surface 5 for connection with the conductive busbar.

[0017] The two ends of the stainless steel strip 3 are fixed to the conductive strip 2. Specifically, the connection and fixation are achieved through the concave screw holes 4 provided on the inner circumferential surface of the conductive strip 2. This connection method facilitates the subsequent disassembly and replacement of the stainless steel strip 3 or the conductive strip 2.

[0018] The anode was installed on a tellurium electrolytic cell, and the distance between the anode and cathode plates was controlled at 140 mm. Cyclic electrowinning was performed under a current intensity of 500 A for 10 days. During electrowinning, the current density between the anode and cathode plates remained stable. Upon removal from the cell, the tellurium deposited on the cathode was observed to have a smooth appearance with virtually no particle adhesion on the surface. The amount of anode mud on the anode column surface was minimal, and the cleaning process was convenient.

[0019] The grid structure reduces anode side reactions, lowers anode mud production, and avoids cathode particle generation; the stainless steel-clad copper conductive strip 2 ensures conductivity while avoiding product contamination caused by corrosion of the conductive strip 2 during electrodeposition; the structural design is simple, and each component is easy to manufacture and replace, effectively solving the problems existing in the prior art. Example

[0020] The tellurium electrolytic refining anode consists of an anode body 1 and conductive strips 2. The anode body 1 has a grid structure, and the grid is composed of cubic stainless steel strips 3. The stainless steel strips 3 are 600mm long, 8mm wide, and 8mm high. The spacing between each pair of adjacent stainless steel strips 3 is 80mm (within the protection range of 80-200mm).

[0021] The conductive strip 2 is made of stainless steel with copper cladding. The inside is a solid copper rod to enhance conductivity, and the outside is wrapped with a stainless steel layer to improve resistance to deformation. The two ends of the conductive strip 2 are milled to remove part of the stainless steel sleeve covering the copper rod, so that the copper rod is exposed to form a contact surface 5, which is used to connect with the conductive busbar.

[0022] The two ends of the stainless steel strip 3 are fixed through the concave screw holes 4 on the inner circumference of the conductive strip 2, which facilitates disassembly and replacement.

[0023] The anode was installed in a tellurium electrolytic cell, with the distance between the anode and cathode plates controlled at 120 mm. Circulating electrowinning was performed at a current intensity of 400 A for 8 days. During electrowinning, the current density remained stable. Upon exiting the cell, the tellurium deposited on the cathode had a smooth, particle-free surface, and the anode surface had very little anode mud, making cleaning easy. Furthermore, no corrosion of the conductive strip 2 was observed. Example

[0024] The tellurium electrolytic refining anode consists of an anode body 1 and conductive bars 2. The anode body 1 has a grid structure, and the grid is composed of cubic stainless steel bars 3. The stainless steel bars 3 are 650mm long, 12mm wide, and 12mm high, and the spacing between each pair of adjacent stainless steel bars 3 is 200mm.

[0025] The conductive strip 2 is made of stainless steel with copper cladding. The solid copper rod inside ensures conductivity, and the outer stainless steel sleeve enhances structural stability. The two ends of the conductive strip 2 are milled to form contact surfaces 5, exposing the internal copper rod for connection to the conductive busbar.

[0026] The two ends of the stainless steel strip 3 are fixed through the concave screw holes 4 of the conductive strip 2, making it easy to assemble and disassemble.

[0027] The anode was installed in a tellurium electrolytic cell, with the distance between the anode and cathode plates controlled at 160 mm. Cyclic electrowinning was performed at a current intensity of 600 A for 12 days. No significant side reactions were observed during the electrowinning process. The tellurium deposited at the cathode had a smooth appearance, the anode surface had minimal anode mud adhesion, and the conductive strip 2 showed no corrosion or deformation. The overall structure was stable.

[0028] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A tellurium electrolytic refining anode, characterized in that, The tellurium electrolytic refining anode consists of an anode body (1) and a conductive strip (2); The anode body (1) has a grid structure, and the grid is composed of stainless steel strips (3) of the same length and equal distance.

2. A tellurium electrowinning anode according to claim 1, characterized in that, The spacing between adjacent stainless steel strips (3) is 80-200mm.

3. The tellurium electrolytic refining anode according to claim 2, characterized in that, The cross-section of the stainless steel strip (3) is square.

4. The tellurium electrolytic refining anode according to claim 3, characterized in that, The conductive strip (2) has a concave screw hole (4) on its inner circumferential surface.

5. A tellurium electrowinning anode according to claim 4, characterized in that The conductive strip (2) is made of copper and has a stainless steel coating on the outside. The conductive strip (2) has contact surfaces (5) at both ends. The contact surfaces (5) are formed by milling a stainless steel sleeve to expose a solid copper rod for connecting with the conductive busbar.

6. A tellurium electrowinning anode according to claim 5, characterized in that The anode body (1) and the conductive strip (2) are connected and fixed through a concave screw hole (4).

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