Anode filter frame for zinc electrodeposition

Abstract

The utility model relates to an anode filter frame for zinc electrodeposition. The anode filter frame for zinc electrodeposition comprises a bottom, a top with an opening and a first side wall, and further comprises a second side wall and a third side wall which are provided with through holes, and filter cloth covers the through holes; a liquid inlet and a liquid outlet are formed in the fourth side wall; and the bottom, the top, the first side wall, the second side wall, the third side wall and the fourth side wall jointly form a hollow anode chamber for placing an anode plate. The through holes of the second side wall and the third side wall are covered with the filter cloth, and lead-containing anode slime cannot enter external electrodeposition liquid from the interior of the hollow anode chamber through the filtering effect of the filter cloth, so that the lead-containing anode slime is prevented from being entrained into a cathode region and separated out at a cathode in the precipitation process of zinc sheets, and the service life of the lead-containing anode slime is prolonged. Therefore, the quality of the zinc sheet is improved.

Description

Technical Field

[0001] The present application relates to the field of metallurgy technology, and in particular to an anode filter frame for zinc electrowinning. Background Art

[0002] The hydrometallurgical zinc smelting uses a lead-silver alloy plate containing about 0.8%-1% silver as the anode and an industrial pure aluminum plate as the cathode. The zinc is extracted by electroplating in a zinc sulfate electrolyte. During the electroplating process, the zinc ions are reduced to zinc and precipitated by electrons at the cathode. After the cathode plate surface is accumulated to a certain thickness, the zinc sheet is obtained by stripping. The lead-silver alloy anode will slowly oxidize during the electroplating process and form anode mud together with the oxidized manganese element in the solution. It will eventually adhere to the anode or precipitate to the bottom of the electroplating tank and be removed by cleaning the tank and the anode plate. The performance of the cathode and cathode plates used for zinc electroplating has a significant impact on the zinc electroplating process. The plates are required to have good conductivity, mechanical properties, and corrosion resistance.

[0003] However, during the precipitation of zinc flakes, lead-containing anode mud will be entrained into the cathode area and precipitated at the cathode, resulting in zinc flake contamination. Utility Model Content

[0004] In order to solve or partially solve the problems existing in the related art, the present application provides an anode filter frame for zinc electrowinning.

[0005] To achieve the above objectives, this application is implemented through the following technical solutions:

[0006] An anode filter frame for zinc electrowinning, comprising a bottom, a top with an opening and a first side wall, the anode filter frame for zinc electrowinning also comprising:

[0007] The second side wall and the third side wall are provided with through holes, and the through holes are covered with filter cloth;

[0008] a fourth side wall, on which a liquid inlet and a liquid outlet are formed;

[0009] The bottom, the top, the first side wall, the second side wall, the third side wall and the fourth side wall together constitute a hollow anode chamber for placing the anode plate.

[0010] Optionally, a grid plate is provided on the second side wall, at least one pair of bolt holes is opened on the second side wall, the grid plate and the filter cloth are detachably connected to the second side wall by bolts, and the grid plate completely covers the through hole.

[0011] Optionally, a pair of hanging ears are symmetrically provided on the top.

[0012] Optionally, the filter cloth is an acid-resistant filter cloth.

[0013] Optionally, the bolts are acid-resistant bolts.

[0014] Optionally, the through hole is a square hole.

[0015] Optionally, the grid plate is located on the inner side of the filter cloth.

[0016] Beneficial effects of the present application: The present application sets a bottom, a top, a first side wall, a second side wall, a third side wall and a fourth side wall, so that the six together constitute a hollow anode chamber for placing the anode plate, and covers the through holes of the second side wall and the third side wall with filter cloth. Through the filtering effect of the filter cloth, the lead-containing anode mud cannot enter the external electrolytic liquid from the inside of the hollow anode chamber, thereby avoiding the lead-containing anode mud being carried into the cathode area during the precipitation process of the zinc sheet and precipitating at the cathode, resulting in the occurrence of zinc sheet contamination, thereby improving the quality of the zinc sheet.

[0017] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and other objects, features and advantages of the present application will become more apparent through a more detailed description of exemplary embodiments of the present application in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments of the present application.

[0019] Figure 1 It is a schematic structural diagram of an anode filter frame for zinc electrowinning shown in an embodiment of the present application;

[0020] Figure 2 It is a schematic diagram of an anode filter frame for zinc electrowinning shown in an embodiment of the present application for reflecting a filter cloth.

[0021] Figure numerals: 1 bottom, 2 top, 3 first side wall, 4 second side wall, 5 third side wall, 6 through hole, 7 fourth side wall, 8 liquid inlet, 9 liquid outlet, 10 hollow anode chamber, 11 grid plate, 12 bolt hole, 13 hanging ear. DETAILED DESCRIPTION

[0022] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0023] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0024] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific situation.

[0025] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0026] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples" or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0027] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

[0028] The above description is only an optional embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

[0029] In order to make the purpose, technical solutions and beneficial effects of the present application clearer, the preferred embodiments of the present application will be described in detail below in conjunction with the accompanying drawings to facilitate understanding by technical personnel.

[0030] Embodiment 1:

[0031] See also Figure 1 and Figure 2 , an anode filter frame for zinc electrowinning, comprising a bottom 1, a top 2 with an opening and a first side wall 3, the anode filter frame for zinc electrowinning also comprising:

[0032] The second side wall 4 and the third side wall 5 are provided with a through hole 6, and the through hole 6 is covered with a filter cloth 61;

[0033] A fourth side wall 7, on which a liquid inlet 8 and a liquid outlet 9 are provided;

[0034] The bottom 1, the top 2, the first side wall 3, the second side wall 4, the third side wall 5 and the fourth side wall 7 together constitute a hollow anode chamber 10 for placing the anode plate.

[0035] Specifically, the bottom 1 and the first side wall 3 are both sealing plates, and the top 2 has an opening, the size of the opening matches the size of the anode plate to facilitate the removal and placement of the anode plate; the bottom 1, the top 2, the first side wall 3, the second side wall 4, the third side wall 5 and the fourth side wall 7 are fixedly connected to each other to form a hollow anode chamber 10, and all six are made of acid-resistant materials, such as stainless acid-resistant; the second side wall 4 and the third side wall 5 are respectively the front and back of the hollow anode chamber 10, and both are provided with a through hole 6, and the interior of the hollow anode chamber 10 is connected to the outside through the through hole 6, and the through hole 6 is covered with a filter cloth 61, which is fixed to the surface of the second side wall 4 by bolts, and is used to filter the anode mud formed by the anode plate in the hollow anode chamber 10 and the oxidized manganese element in the solution; in addition, in this embodiment, a liquid inlet 8 and a liquid outlet 9 are provided on the fourth side wall 7, and the electrolytic liquid can also enter the hollow anode chamber 10 through the liquid inlet 8, and after the anode reaction, the solution is discharged through the liquid outlet 9.

[0036] When in use, the anode filter frame for zinc electrolysis is placed in the integrated electrolytic cell, the anode plate is placed in the hollow anode chamber 10 from the opening of the top 2, and the cathode plate is placed outside the hollow anode chamber 10 at a certain distance, and the electrolytic solution is passed into the integrated electrolytic cell, the electrolytic solution contacts the cathode plate, and at the same time penetrates the filter cloth into the hollow anode chamber 10 and contacts the anode plate, and then the cathode plate and the anode plate are connected to the wire, and then direct current is passed to start electrolysis. As the electrolysis proceeds, the zinc ions obtain electrons at the cathode plate and are reduced to zinc and precipitated, and gradually accumulate on the cathode plate surface. At the same time, the anode plate in the hollow anode chamber 10 is slowly oxidized during the electrolytic deposition process, and forms anode mud together with the oxidized manganese element in the electrolytic solution. The anode mud adheres to the anode plate or settles to the bottom of the hollow anode chamber 10. Due to the filtering effect of the filter cloth 61, the lead-containing anode mud cannot enter the external electrolytic solution from the inside of the hollow anode chamber 10, thereby avoiding the lead-containing anode mud being entrained into the cathode area during the precipitation of the zinc flakes and precipitating at the cathode, resulting in zinc flake pollution, thereby improving the quality of the zinc flakes.

[0037] Embodiment 2:

[0038] See also Figure 1 and Figure 2 Based on embodiment 1, further and optionally, a grid plate 11 is provided on the second side wall 4, at least one pair of bolt holes 12 is opened on the second side wall 4, the grid plate 11 and the filter cloth 61 are detachably connected to the second side wall 4 by bolts, and the grid plate 11 completely covers the through hole 6.

[0039] Specifically, the grid plate 11 and the filter cloth 61 are both provided with connection holes corresponding to the bolt holes 12. In the present embodiment, six connection holes are provided, which are respectively located on the left and right sides and the lower side of the grid plate 11 and the filter cloth 61. Correspondingly, the number of bolt holes 12 provided on the second side wall 4 is also six, and the number of bolts required is also six. Before the electrolytic deposition is carried out, the grid plate 11 and the filter cloth 61 are connected and fixed to the second side wall 4 by six bolts, and then placed in the electrolytic cell. If the grid plate 11 and the filter cloth 61 are damaged, the grid plate 11 and the filter cloth 61 can be replaced by simply loosening the bolts.

[0040] In this embodiment, considering that the strength of the filter cloth 61 is limited, under long-term use, the anode mud attached to the inside of the hollow anode chamber 10 will cause multiple extrusion and stretching of the filter cloth 61, causing the performance of the filter cloth 61 to degrade and even be damaged. Therefore, a grid plate 11 is provided to block the anode mud, thereby avoiding the performance degradation of the filter cloth 61 due to extrusion and stretching, thereby ensuring the filtering performance of the filter cloth 61 and extending the service life of the filter cloth 61.

[0041] Further and optionally, the top 2 is symmetrically provided with a pair of hanging ears 13.

[0042] When it is necessary to take out the anode filter frame for zinc electrowinning from the electrolytic cell, a tool such as a hook is used to pass through a pair of hanging ears 13, and the filter frame can be lifted out of the electrolytic cell.

[0043] Further and optionally, the filter cloth 61 is an acid-resistant filter cloth.

[0044] By using acid-resistant filter cloth, filter cloth 61 can be prevented from being corroded by acidic electrolytic fluid and requiring frequent replacement. Acid-resistant filter cloth is made of polypropylene filter cloth or polyester filter cloth. Polypropylene filter cloth is woven from polypropylene fiber, which is acid-resistant and alkali-resistant, has a light specific gravity, a smooth cloth surface, and good air permeability; polyester filter cloth is acid-resistant, weak alkali-resistant, wear-resistant, corrosion-resistant, has good recovery, and has very poor electrical conductivity. Polyester fibers are generally resistant to temperatures between 130 and 150 degrees Celsius. In addition to having the unique advantages of ordinary felt filter cloths, they are also very wear-resistant. The raw material structure of polyester filter cloth is short and wooly, and the woven fabric is dense and has good particle retention.

[0045] Further and optionally, the bolt is an acid-resistant bolt.

[0046] By using acid-resistant bolts, it is possible to avoid frequent replacement of bolts due to corrosion by acidic electrolytic fluid. Acid-resistant bolts can be made of stainless steel bolts, nonferrous metal bolts, or plastic bolts.

[0047] In addition, the bolts can also be electroplated to improve their acid corrosion resistance.

[0048] Further and optionally, the through hole 6 is a square hole.

[0049] In this embodiment, an implementation method in which the through hole 6 is a square hole is provided. It should be noted that the through hole 6 is not limited to the shape of a square hole. It can be a circular hole or a hole of other irregular shapes. In short, as long as the function of connecting the inside and outside of the hollow anode chamber 10 can be achieved, no matter what shape the through hole 6 is, it is within the protection scope of the present application.

[0050] Further and optionally, the grid plate 11 is located on the inner side of the filter cloth 61 .

[0051] Such arrangement enables the grid plate 11 to provide support for the filter cloth 61 on the one hand, and to block the anode mud on the other hand, thereby preventing the anode mud from squeezing and stretching the filter cloth 61 .

[0052] In summary, the present application sets a bottom 1, a top 2, a first side wall 3, a second side wall 4, a third side wall 5 and a fourth side wall 7, so that the six together constitute a hollow anode chamber 10 for placing an anode plate, and covers the through holes 6 of the second side wall 4 and the third side wall 5 with a filter cloth 61. Through the filtering effect of the filter cloth 61, the lead-containing anode mud cannot enter the external electrolytic solution from the inside of the hollow anode chamber 10, thereby avoiding the lead-containing anode mud being entrained into the cathode area during the precipitation process of the zinc sheet and precipitating at the cathode, resulting in zinc sheet contamination, thereby improving the quality of the zinc sheet; the present application sets a grid plate 11 to block the anode mud, thereby avoiding the performance degradation of the filter cloth 61 due to squeezing and stretching, thereby ensuring the filtering performance of the filter cloth 61 and extending the service life of the filter cloth 61; the present application uses an acid-resistant filter cloth to avoid the filter cloth 61 being corroded by the acidic electrolytic solution and frequently replaced, and the present application uses acid-resistant bolts to avoid the bolts being corroded by the acidic electrolytic solution and frequently replaced.

[0053] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solution of the present application rather than to limit it. Although the present application has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the present application; the dimensions of the drawings are not related to the specific objects, and the dimensions of the objects can be changed arbitrarily.

Claims

1. An anode filter frame for zinc electrowinning, comprising a bottom (1), a top (2) with an opening and a first side wall (3), characterized in that: The zinc electrowinning anode filter frame further comprises: A second side wall (4) and a third side wall (5) are provided with a through hole (6), and the through hole (6) is covered with a filter cloth (61); A fourth side wall (7) having a liquid inlet (8) and a liquid outlet (9) formed thereon; The bottom (1), the top (2), the first side wall (3), the second side wall (4), the third side wall (5) and the fourth side wall (7) together constitute a hollow anode chamber (10) for placing an anode plate.

2. The anode filter frame for zinc electrowinning as claimed in claim 1, characterized in that: A grid plate (11) is provided on the second side wall (4), at least one pair of bolt holes (12) is provided on the second side wall (4), the grid plate (11) and the filter cloth (61) are detachably connected to the second side wall (4) by bolts, and the grid plate (11) completely covers the through hole (6).

3. The anode filter frame for zinc electrowinning according to claim 1, characterized in that: The top (2) is symmetrically provided with a pair of hanging ears (13).

4. The anode filter frame for zinc electrowinning as claimed in claim 1, characterized in that: The filter cloth (61) is an acid-resistant filter cloth.

5. The anode filter frame for zinc electrodeposition as claimed in claim 2, characterized in that: The bolts are acid-resistant bolts.

6. The anode filter frame for zinc electrodeposition according to claim 1, characterized in that: The through hole (6) is a square hole.

7. The anode filter frame for zinc electrowinning as claimed in claim 2, characterized in that: The grid plate (11) is located on the inner side of the filter cloth (61).

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