Combined copper electrolytic anode

Abstract

The present invention discloses a combined copper electrolysis anode. The combined copper electrolysis anode includes: a pole ear, a connector and a pole plate; the pole ear includes a structural layer, a conductive layer and a reinforcement structure, wherein the structural layer includes a first extension section, a first bending section, a second extension section, a second bending section and a third extension section connected in sequence; the reinforcement structure includes a transverse reinforcement rib and a vertical reinforcement rib, the transverse reinforcement rib connects the first extension section and the third extension section, and the vertical reinforcement rib connects the transverse reinforcement rib and the second extension section; the conductive layer is arranged on at least a part of the surface of the structural layer away from the reinforcement structure; the pole plate is detachably connected to the pole ear through the connector. The pole ear and the pole plate of the combined copper electrolysis anode are detachable, and after the electrolysis is completed, the pole ear can be reused, and only the pole plate needs to be recycled, thereby greatly reducing the residual pole rate and the electrode recycling cost.

Description

Technical Field

[0001] The invention relates to the field of metallurgy, and in particular to a combined copper electrolysis anode. Background Art

[0002] At present, the anode used in the copper electrolysis process is a monolithic anode, which can be divided into two parts: the anode plate surface located below the liquid level line of the electrolytic cell when in use, and the anode ear above the liquid level line. The anode plate surface and the anode ear are cast at one time, demolded at the same time, and then the anode is shaped. The disadvantage of using a monolithic anode is that the anode ear in contact with the conductive bar does not undergo electrolysis reaction when the anode is electrolyzed. After the electrolysis is completed, the ear will be returned to the pyrometallurgical system together with the anode plate surface after electrolysis, resulting in a large amount of returned materials, increasing the cost and burden of pyrometallurgy. In addition, since the anode plate surface and the ear are cast at the same time, the anode plate ear may be twisted and deformed during demolding. Although the deformation can be corrected to a certain extent by the anode shaping unit, if the deformation is too large, it will still affect the verticality of the anode plate surface and poor contact with the conductive bar, resulting in an increase in residual pole rate and cell voltage.

[0003] Therefore, the existing anodes for copper electrolysis still need to be improved. Summary of the invention

[0004] The present invention aims to solve one of the technical problems in the related art at least to a certain extent. To this end, one object of the present invention is to provide a combined copper electrolysis anode. The pole ear (anode ear) and the pole plate (anode plate) of the combined copper electrolysis anode can be separated. After the electrolysis is completed, the pole ear can be reused, and only the pole plate needs to be recycled, thereby greatly reducing the residual pole rate and the electrode recycling cost.

[0005] In one aspect of the present invention, the present invention proposes a combined copper electrolysis anode. According to an embodiment of the present invention, the combined copper electrolysis anode includes a pole ear, a connector and a pole plate; the pole ear includes a structural layer, a conductive layer and a reinforcement structure, wherein the structural layer includes a first extension segment, a first bending segment, a second extension segment, a second bending segment and a third extension segment connected in sequence; the reinforcement structure includes a transverse reinforcement rib and a vertical reinforcement rib, the transverse reinforcement rib connects the first extension segment and the third extension segment, and the vertical reinforcement rib connects the transverse reinforcement rib and the second extension segment; the conductive layer is provided on at least a portion of the surface of the structural layer away from the reinforcement structure; the pole plate is detachably connected to the pole ear through the connector.

[0006] In the combined copper electrolysis anode according to the embodiment of the present invention, the pole ear is connected to the pole plate by a connector. After the electrolysis is completed, the pole ear and the remaining pole plate can be separated so that the pole ear part can be reused, and only the pole plate can be smelted and recycled (for example, the pole plate can be returned to the pyrometallurgical smelting system to be re-smelted and cast into a pole plate), thereby greatly reducing the residual pole rate and the electrode recycling cost. In addition, the pole ear part of the combined copper electrolysis anode of the present invention adopts a structural layer, a conductive layer and a reinforcement structure, wherein the structural layer can bear the weight of the entire anode, the conductive layer can transmit the current during the electrolysis process, and the reinforcement structure can further improve the strength of the pole ear part and improve the service life of the pole ear.

[0007] In addition, the combined copper electrolysis anode according to the above embodiment of the present invention may also have the following additional technical features:

[0008] In some embodiments of the present invention, the structural layer is a stainless steel plate.

[0009] In some embodiments of the present invention, the angle formed by the first extension section and the transverse reinforcement rib is A, the angle formed by the third extension section and the transverse reinforcement rib is B, and A and B are independently 30-60 degrees.

[0010] In some embodiments of the present invention, the angle formed by the first extension section and the transverse reinforcement rib is A, the angle formed by the third extension section and the transverse reinforcement rib is B, and A=B.

[0011] In some embodiments of the present invention, the angle formed by the second extension section and the first bending section is C, the angle formed by the second extension section and the second bending section is D, and C and D are independently 120-150°.

[0012] In some embodiments of the present invention, the angle formed by the second extending section and the first bending section is C, the angle formed by the second extending section and the second bending section is D, and C=D.

[0013] In some embodiments of the present invention, the conductive layer is a copper plate.

[0014] In some embodiments of the present invention, the connecting member includes a plurality of connecting members, and the connecting member passes through the structural layer and the conductive layer to be connected to the electrode plate.

[0015] In some embodiments of the present invention, the connecting member comprises a bolt and / or a screw.

[0016] In some embodiments of the present invention, the electrode plate is a copper plate.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0019] Figure 1 is a schematic structural diagram of a combined copper electrolysis anode according to an embodiment of the present invention;

[0020] Figure 2 1 is a schematic diagram of the structure of a pole ear in a combined copper electrolysis anode according to an embodiment of the present invention;

[0021] Figure 3 is a schematic structural diagram of a pole ear in a combined copper electrolysis anode according to another perspective of an embodiment of the present invention;

[0022] Figure 4 1 is a schematic diagram of the structure of a middle plate of a combined copper electrolysis anode according to an embodiment of the present invention;

[0023] Figure 5 It is a schematic structural diagram of another perspective of the middle plate of the combined copper electrolysis anode according to an embodiment of the present invention.

[0024] Description of reference numerals:

[0025] 100: pole ear; 200: connector; 300: pole plate;

[0026] 110: structural layer; 120: conductive layer; 130: reinforcement structure;

[0027] 111: first extension section; 112: second extension section; 113: third extension section;

[0028] 1101: first bending section; 1102: second bending section;

[0029] 131: transverse reinforcement rib; 132: vertical reinforcement rib;

[0030] 400: Through hole. DETAILED DESCRIPTION

[0031] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0032] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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.

[0033] In addition, the terms "first", "second", and "third" 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", "second", and "third" 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.

[0034] In the present invention, unless otherwise clearly specified and limited, the terms such as "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 connection; it can be a mechanical connection or an electrical connection; 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 specific circumstances.

[0035] 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.

[0036] In one aspect of the present invention, the present invention provides a combined copper electrolysis anode. According to an embodiment of the present invention, reference Figure 1The combined copper electrolytic anode comprises a pole ear 100, a connector 200 and a pole plate 300; the pole ear 100 comprises a structural layer 110, a conductive layer 120 and a reinforcing structure 130, wherein the structural layer 110 comprises a first extension section 111, a first bending section 1101, a second extension section 112, a second bending section 1102 and a third extension section 113 connected in sequence; the reinforcing structure 130 comprises a transverse reinforcing rib 131 and a vertical reinforcing rib 132, the transverse reinforcing rib 131 connects the first extension section 111 and the third extension section 113, and the vertical reinforcing rib 132 connects the transverse reinforcing rib 131 and the second extension section 112; the conductive layer 120 is arranged on at least a portion of the surface of the structural layer 110 away from the reinforcing structure 130; the pole plate 300 is detachably connected to the pole ear 100 through the connector 200.

[0037] In the combined copper electrolysis anode according to the embodiment of the present invention, the pole ear is connected to the pole plate by a connector. After the electrolysis is completed, the pole ear and the remaining pole plate can be separated so that the pole ear part can be reused, and only the pole plate can be smelted and recycled (for example, the pole plate can be returned to the pyrometallurgical smelting system to be re-smelted and cast into a pole plate), thereby greatly reducing the residual pole rate and the electrode recycling cost. In addition, the pole ear part of the combined copper electrolysis anode of the present invention adopts a structural layer, a conductive layer and a reinforcement structure, wherein the structural layer can bear the weight of the entire anode, the conductive layer can transmit the current during the electrolysis process, and the reinforcement structure can further improve the strength of the pole ear part and improve the service life of the pole ear.

[0038] Reference below Figures 1 to 5 The combined copper electrolysis anode according to an embodiment of the present invention is described in further detail.

[0039] According to an embodiment of the present invention, the structural layer 110 may be a stainless steel plate, that is, the structural layer 110 is processed from a stainless steel plate. The stainless steel plate has good corrosion resistance and structural properties, and the structural layer 110 processed from the stainless steel plate can be used in a corrosive environment and withstand the mass of the entire anode.

[0040] According to an embodiment of the present invention, Figure 2As shown, the angle formed by the first extension section 111 and the transverse reinforcement rib 131 is A, and the angle formed by the third extension section 113 and the transverse reinforcement rib 131 is B, and A and B are independently 30 to 60°. According to a specific example of the present invention, A and B can be independently 30°, 40°, 45°, 50° or 60°. The size of the angles A and B reflects to a certain extent the degree of bending of the first bending section 1101 and the second bending section 1102 relative to the first and third extension sections. The inventors found in the experiment that the angles of A and B are too small or too large, which is not conducive to the improvement of the load-bearing capacity of the reinforcement layer 110. By controlling A and B to be 30 to 60° independently, the load-bearing capacity of the reinforcement layer 110 can be further improved. If the bending angles of the first and third extension sections are too small, it is not conducive to the structural stress, and if they are too large, it will affect the working space of the hook when the anode is lifted.

[0041] According to a preferred embodiment of the present invention, the angle formed by the first extension section 111 and the transverse reinforcing rib 131 is equal to the angle formed by the third extension section 113 and the transverse reinforcing rib 131, that is, A = B. Thus, the reinforcing layer 110 and the reinforcing structure 130 can be made easier to process while ensuring that the reinforcing layer 110 has a better load-bearing capacity.

[0042] According to an embodiment of the present invention, Figure 2 As shown, the angle formed by the second extension section 112 and the first bending section 1101 is C, and the angle formed by the second extension section 112 and the second bending section 1102 is D, and C and D are independently 120-150°. The size of the angles A and B reflects to a certain extent the bending degree of the first bending section 1101 and the second bending section 1102 relative to the second extension section 112. The inventors found in the experiment that the angles of C and D are too small or too large, which is not conducive to improving the load-bearing capacity of the reinforcement layer 110. By controlling C and D to be 120-150° independently, the load-bearing capacity of the reinforcement layer 110 can be further improved.

[0043] According to a preferred embodiment of the present invention, the angle formed by the second extension section 112 and the first bending section 1101 is equal to the angle formed by the second extension section 112 and the second bending section 1102, that is, C = D. Thus, the reinforcing layer 110 and the reinforcing structure 130 can be made easier to process while ensuring that the reinforcing layer 110 has a better load-bearing capacity.

[0044] In some embodiments, the first extension segment is parallel to the second extension segment, and the second extension segment is parallel to the third extension segment. Thus, by determining the angles of angles A and B, the angles of angles C and D can be determined accordingly, and the beneficial effects described above are achieved, which will not be described in detail here.

[0045] According to an embodiment of the present invention, the material of the conductive layer 120 is not particularly limited, as long as it is formed of a conductive material, and those skilled in the art can make a selection according to actual needs. According to a preferred embodiment of the present invention, the conductive layer 120 is a copper plate. In other words, the conductive layer 120 is processed from a copper plate. In copper electrolysis, the conductive layer is directly connected to the electrode 300 to transmit the current of the electrolysis process. By using a copper plate to process the conductive layer 120, not only can the production cost of the combined copper electrolysis be effectively reduced, but also side reactions during the electrolysis process can be effectively avoided. In some embodiments, the conductive layer 120 can be processed into a shape that matches the reinforcing layer 110, so that it fits on the surface of the reinforcing layer 110, which can be more convenient for processing.

[0046] In addition, it should be noted that the material of the transverse reinforcing ribs 131 and the vertical reinforcing ribs 132 in the reinforcing structure 130 is not particularly limited, and rigid materials commonly used in the art may be used.

[0047] According to an embodiment of the present invention, the above-mentioned connecting member 200 includes a plurality of connecting members 200, and the connecting member 200 passes through the structural layer 110 and the conductive layer 120 and is connected to the electrode plate 300. The specific type of the connecting member 200 is not particularly limited, and those skilled in the art can select it according to actual needs. According to a preferred embodiment of the present invention, the connecting member 200 includes bolts and / or screws. When bolts and / or screws are used as connecting members, the transverse reinforcing ribs 131 in the electrode ear 100, the second extension section 112, the conductive layer 120 and the electrode plate 300 can be punched to form a through hole 400 (such as Figure 2 , 3 5 ), so that the pole ear 100 and the pole plate 300 can be connected and fixed by bolts and / or screws.

[0048] According to an embodiment of the present invention, the electrode plate 300 is a copper plate, that is, the electrode plate 300 can be processed from a copper plate, thereby meeting the requirements of the copper electrolysis process.

[0049] As described above, the combined copper electrolytic anode according to the embodiment of the present invention may have at least one of the following advantages:

[0050] 1. By making the traditional anode ears into reusable parts, the residual electrode rate of the anode in the copper electrolysis process can be reduced to about 10%, thereby reducing the amount of materials returned to the pyrometallurgical anode furnace section. In the existing process, based on the residual electrode rate of 16%, an electrolysis plant with an annual output of 20 tons of cathode copper returns 38,000 tons of residual electrodes to the pyrometallurgical anode furnace section every day. If the residual electrode rate is reduced to 10%, the residual electrodes returned to the pyrometallurgical anode furnace section can be reduced to 22,000 tons per year. This will bring the following benefits:

[0051] (1) In general, the copper recovery rate of the anode furnace section in copper smelting is 99%. If 1.6 tons of residual anode is reduced each year, 160 tons of copper loss can be reduced each year. Based on a copper price of RMB 45,000 per ton, a loss of RMB 7.2 million can be avoided each year.

[0052] (2) In general, the processing cost of anode furnace section in copper smelting is RMB 300 per ton of copper. If 16,000 tons of residual anodes are reduced each year, the processing cost can be reduced by RMB 4.8 million.

[0053] (3) Reduce labor and production load of anode casting unit, anode furnace and anode waste washing unit. Taking a copper smelter with an annual cathode copper production scale of 200,000 tons as an example, if the anode waste rate is reduced to 10%, the anode production load can be reduced from 232,000 tons to 222,000 tons, that is, the production load of anode casting unit and anode furnace can be reduced by about 4.0%. The production load of anode waste washing unit can be reduced by about 40%.

[0054] 2. The use of combined anodes is also very beneficial for the casting and demoulding of the anode plate. The shape of the traditional integral anode plate is relatively complex. The copper liquid in the ear has poor fluidity during casting, and uneven hot and cold easily cause uneven thickness of the ear, and it is easy to twist and deform during demoulding. With the combined anode, the shape of the anode plate surface is just a simple rectangle, which is very easy to control during casting and demoulding, and the flatness of the anode plate is high.

[0055] 3. Traditional integral anode plates have high requirements for anode shaping units, which not only require plate surface flattening function but also require ear milling to ensure good contact with the conductive bar and verticality of the anode plate during electrolysis. However, with modular anodes, the ears are pre-processed parts with high precision, which can fully ensure good contact with the conductive bar and verticality of the anode plate surface.

[0056] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means 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, without contradiction.

[0057] 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.

Claims

1. A combined copper electrolysis anode, characterized in that: Including tabs, connectors and plates; The tab comprises a structural layer, a conductive layer and a reinforcement structure, wherein: The structural layer comprises a first extending section, a first bending section, a second extending section, a second bending section and a third extending section which are connected in sequence; The reinforcement structure comprises a transverse reinforcement rib and a vertical reinforcement rib, wherein the transverse reinforcement rib connects the first extension segment and the third extension segment, and the vertical reinforcement rib connects the transverse reinforcement rib and the second extension segment; The conductive layer is arranged on at least a portion of the surface of the structural layer away from the reinforcing structure, the conductive layer is processed into a shape matching the structural layer, and the conductive layer is attached to the surface of the structural layer; The electrode plate is detachably connected to the electrode lug via the connecting member, the connecting member comprises a plurality of connecting members, the connecting member passes through the structural layer and the conductive layer and is connected to the electrode plate, and the connecting member comprises a bolt and / or a screw; The angle formed by the first extension section and the transverse reinforcement rib is A, the angle formed by the third extension section and the transverse reinforcement rib is B, A and B are independently 30 to 60°, A=B, the angle formed by the second extension section and the first bending section is C, the angle formed by the second extension section and the second bending section is D, C and D are independently 120 to 150°, C=D.

2. The combined copper electrolysis anode according to claim 1, characterized in that: The structural layer is a stainless steel plate.

3. The combined copper electrolysis anode according to claim 1, characterized in that: The conductive layer is a copper plate.

4. The combined copper electrolysis anode according to claim 1, characterized in that: The electrode plate is a copper plate.

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