Negative plate conductive head for zinc electrodeposition

Abstract

The utility model relates to the technical field of zinc electrodeposition, in particular to a cathode plate conductive head for zinc electrodeposition, which is characterized in that one end of a conductive cross beam is connected with a conductive head, and the conductive head comprises an aluminum block and a copper bar; the aluminum block is fixedly connected with the conductive cross beam, and one end of the aluminum block is provided with an inward concave groove; the copper bar comprises a contact part and a fixing part, the contact part is arranged at the bottom of the fixing part, the fixing part is embedded in the groove, a plurality of round holes are formed in the fixing part, aluminum columns are embedded in the round holes, and the two ends of each aluminum column are fixedly connected with the aluminum block; the cross section of the contact part is of a trapezoidal structure, and the thickness of the contact part is gradually reduced from top to bottom. According to the utility model, the copper-aluminum casting connection surface is tight, the copper-aluminum casting connection part is not easy to loosen in the production and use process, the conductive performance is improved, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of zinc electrowinning, in particular to a cathode plate conductive head for zinc electrowinning. Background Art

[0002] Zinc electrowinning refers to the metallurgical process of electrolytically extracting zinc using zinc sulfate aqueous solution as the electrolyte, also known as zinc electrolysis. It has the effect of obtaining high-purity metal once and the solvent can be regenerated and recycled. At present, the cathode conductive head used for zinc electrowinning is an aluminum-clad copper structure, and one end of the copper plate is wrapped in the aluminum part. This structure is easy to cause the copper-aluminum casting connection surface to be not tight enough during casting, and it is easy to have bubbles and isolation layers, which will lead to poor high-heat resistance of the conductive beam, reduced conductivity, small current that can pass, high heat generation, waste of energy and great hidden dangers; and during production and use, due to operational collisions, the copper-aluminum casting connection will become loose, further affecting the conductivity, and at the same time reducing the service life of the cathode plate. Summary of the invention

[0003] The utility model aims to solve the problems that the copper-aluminum casting connection surface of the existing cathode plate conductive head is not tight enough and the copper-aluminum casting connection is easy to loosen. A cathode plate conductive head for zinc electrowinning is provided. The copper-aluminum casting connection surface of the conductive head is tight, and the copper-aluminum casting connection is not easy to loosen during production and use, thereby improving the conductive performance and service life.

[0004] In order to achieve the above-mentioned purpose, the technical solution of the utility model is: a cathode plate conductive head for zinc electrowinning, comprising a cathode plate and a conductive beam arranged on the top of the cathode plate, one end of the conductive beam is connected to the conductive head, the conductive head comprises an aluminum block and a copper bar; the aluminum block is fixedly connected to the conductive beam, and one end of the aluminum block is provided with an inwardly recessed groove.

[0005] The copper bar includes a contact part and a fixing part, wherein the contact part is arranged at the bottom of the fixing part, the fixing part is embedded in the groove, a plurality of circular holes are arranged on the fixing part, and aluminum columns are embedded in the circular holes, and both ends of the aluminum columns are fixedly connected to the aluminum block; the cross section of the contact part is a trapezoidal structure, and the thickness of the contact part gradually decreases from top to bottom. Through the cooperation between the fixing part and the groove and the cooperation between the aluminum column and the circular hole, the aluminum block and the copper bar are fixed to each other.

[0006] Furthermore, one end of the aluminum block is provided with an inwardly recessed step, and the step has an arc transition; the groove is provided at the step.

[0007] Furthermore, the number of the circular holes is three, and the three circular holes are distributed in a triangular shape; the aluminum column and the aluminum block are an integrally formed structure, so that the aluminum block and the copper bar are firmly connected with high connection strength.

[0008] Furthermore, the upper end of the contact portion is welded and fixed to the aluminum block, so that the acidic gas medium is not easy to enter the contact part between the aluminum block and the copper strip, thereby protecting the contact surface between the aluminum block and the copper strip from corrosion.

[0009] Furthermore, the fixing portion is in a rectangular structure, and the thickness of the fixing portion is smaller than the thickness of the contact portion, thereby increasing the conductive contact area.

[0010] Through the above technical solution, the beneficial effects of the utility model are:

[0011] The utility model has a simple structure and is easy to use. The copper-aluminum casting connection surface is tight, which improves the high heat resistance and conductivity of the conductive beam. A large current can pass through with low heat generation. The copper-aluminum casting connection is not easy to loosen, which improves the conductivity and extends the service life.

[0012] The fixing part of the copper bar of the utility model is embedded in the groove, and the aluminum column is embedded in the round hole, wherein the aluminum block is cast on the copper bar, and the aluminum block is cast in the round hole to form the aluminum column, so as to achieve the effect of fixing the aluminum block and the copper bar to each other.

[0013] The contact part of the copper strip of the utility model is welded and fixed to the aluminum block, and is sealed by welding, so that the acidic gas medium is not easy to enter the contact surface of the aluminum block and the copper strip, and the contact surface of the aluminum block and the copper strip is further protected from corrosion, and abnormal heating due to poor contact is effectively avoided, which leads to increased resistance and increased power consumption, saves production costs, and further prolongs the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic structural diagram of a cathode plate conductive head for zinc electrowinning according to the utility model;

[0015] Figure 2 It is a structural schematic diagram of the conductive head of the utility model;

[0016] Figure 3 It is a structural schematic diagram of the copper strip of the utility model;

[0017] Figure 4 yes Figure 1 Schematic diagram of the cross-sectional structure at AA in the middle;

[0018] Figure 5 yes Figure 1 Schematic diagram of the cross-sectional structure at the middle BB;

[0019] Figure 6 yes Figure 1 Schematic diagram of the enlarged structure at point A in the middle.

[0020] The numbers in the accompanying drawings are: 1 is a cathode plate, 2 is a conductive beam, 3 is a conductive head, 4 is an aluminum block, 5 is a step, 6 is a copper bar, 601 is a contact part, 602 is a fixing part, 603 is a round hole, and 7 is an aluminum column. DETAILED DESCRIPTION

[0021] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments:

[0022] like Figure 1 to Figure 6 As shown, a cathode plate conductive head for zinc electrowinning includes a cathode plate 1 and a conductive beam 2 arranged on the top of the cathode plate 1, one end of the conductive beam 2 is connected to a conductive head 3, and the conductive head 3 includes an aluminum block 4 and a copper bar 6; the aluminum block 4 is fixedly connected to the conductive beam 2, and one end of the aluminum block 4 is provided with an inwardly concave groove. In this embodiment, the conductive head 3 is welded and fixed on the conductive beam 2.

[0023] The copper strip 6 includes a contact portion 601 and a fixing portion 602. The contact portion 601 is arranged at the bottom of the fixing portion 602. The fixing portion 602 is embedded in the groove. A plurality of circular holes 603 are arranged on the fixing portion 602. Aluminum columns 7 are embedded in the circular holes 603. Both ends of the aluminum columns 7 are fixedly connected to the aluminum block 4. The cross section of the contact portion 601 is a trapezoidal structure, and the thickness of the contact portion 601 gradually decreases from top to bottom. In this embodiment, the aluminum block 4 is cast around the copper strip 6 by a mold, and the aluminum block 4 wraps the copper strip 6 so that the fixing portion 602 is embedded in the groove, and the aluminum column 7 is embedded in the circular hole 603 on the fixing portion 602, so as to achieve the effect of fixing the aluminum block 4 and the copper strip 6 to each other. The aluminum block 4 and the copper strip 6 are firmly connected and have high connection strength. The contact portion 601 is an inverted trapezoidal structure, which increases the conductive contact area.

[0024] One end of the aluminum block 4 is provided with an inwardly recessed step, where a circular arc transition occurs; and the groove is provided at the step.

[0025] The number of the circular holes 603 is three, and the three circular holes 603 are distributed in a triangular shape; the aluminum column 7 and the aluminum block 4 are an integrally formed structure, the purpose of which is to ensure that the aluminum block 4 and the copper bar 6 are firmly connected.

[0026] The upper end of the contact portion 601 is welded and fixed to the aluminum block 4. In this embodiment, the joint between the contact portion 601 of the copper strip 6 and the aluminum block 4 is welded to prevent acidic gas from entering the contact surface between the aluminum block 4 and the copper strip 6, thereby preventing the contact surface between the aluminum block 4 and the copper strip 6 from being corroded.

[0027] The fixing portion 602 is in a rectangular structure, and the thickness of the fixing portion 602 is smaller than the thickness of the contact portion 601 , thereby increasing the conductive contact area.

[0028] The working principle of the utility model is as follows: during implementation, three round holes 603 are opened on the copper bar 6, and then the aluminum block 4 is cast on the copper bar 6 through a mold, and the aluminum block 4 is cast in the round hole 603 to form an aluminum column 7, and then the joint of the aluminum block 4 and the copper bar 6 is welded, and a sealing process is performed by welding, and then the cast conductive head 3 is welded and fixed to one end of the conductive cross beam 2, that is, the aluminum block 4 and the conductive cross beam 2 are welded and fixed, and the joint of the aluminum block 4 and the conductive cross beam 2 is welded. The aluminum block 4 and the copper bar 6 are in close contact with each other, which improves the high heat resistance and conductivity of the conductive cross beam 2, can pass a large current, generate less heat, save energy, and increase the service life, and when the cathode plate conductive head is used in production, the joint of the aluminum block 4 and the copper bar 6 is not easy to loosen.

[0029] The embodiments described above are only preferred embodiments of the utility model and do not limit the scope of implementation of the utility model. Therefore, all equivalent changes or modifications made according to the technical solutions described in the patent scope of the utility model should be included in the scope of the patent application of the utility model.

Claims

1. A cathode plate conductive head for zinc electrowinning, comprising a cathode plate (1) and a conductive beam (2) arranged on the top of the cathode plate (1), characterized in that: One end of the conductive crossbeam (2) is connected to a conductive head (3), the conductive head (3) comprising an aluminum block (4) and a copper bar (6); the aluminum block (4) is fixedly connected to the conductive crossbeam (2), and one end of the aluminum block (4) is provided with an inwardly recessed groove; The copper bar (6) comprises a contact portion (601) and a fixing portion (602); the contact portion (601) is arranged at the bottom of the fixing portion (602); the fixing portion (602) is embedded in the interior of the groove; a plurality of circular holes (603) are arranged on the fixing portion (602); aluminum columns (7) are embedded in the interior of the circular holes (603); both ends of the aluminum columns (7) are fixedly connected to the aluminum block (4); the cross section of the contact portion (601) is a trapezoidal structure; the thickness of the contact portion (601) gradually decreases from top to bottom.

2. A cathode plate conductive head for zinc electrowinning according to claim 1, characterized in that: One end of the aluminum block (4) is provided with an inwardly recessed step, with an arc transition at the step; and the groove is provided at the step.

3. The cathode plate conductive head for zinc electrowinning according to claim 1, characterized in that: The number of the circular holes (603) is three, and the three circular holes (603) are distributed in a triangular shape; the aluminum column (7) and the aluminum block (4) are an integrally formed structure.

4. A cathode plate conductive head for zinc electrowinning according to claim 1, characterized in that: The upper end of the contact portion (601) is fixed to the aluminum block (4) by welding.

5. The cathode plate conductive head for zinc electrowinning according to claim 1, characterized in that: The fixing portion (602) has a rectangular structure, and the thickness of the fixing portion (602) is smaller than the thickness of the contact portion (601).

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