Anode plate composed of BDD electrode slices

Abstract

An anode plate composed of BDD electrode slices comprises a copper bar, a titanium framework and a plurality of BDD electrode slices. The titanium framework comprises a connecting main frame and a plurality of mounting sub-frames, the mounting sub-frames are connected with the connecting main frame, the connecting main frame is connected with the copper bar, and the mounting sub-frames are arranged in parallel; the plurality of BDD electrode plates are respectively mounted on the plurality of mounting sub-frames, a front-back interval D exists between the BDD electrode plates on the same mounting sub-frame, and a left-right interval L exists between the BDD electrode plates of two adjacent mounting sub-frames. Through the unique structural design of the anode plate and the arrangement mode of the BDD electrode plates, multiple challenges of improving the electro-catalysis efficiency, optimizing the material utilization rate and reducing the cost are solved. In the electrochemical oxidation process, the anode plate can efficiently generate hydroxyl free radicals, and conversion from sulfate radicals to persulfate radicals is accelerated; meanwhile, by controlling the interval between the BDD electrode plates, optimal distribution of current density is achieved, and waste of materials is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of micro-etching electrolysis recycling, in particular to an anode plate composed of BDD electrode sheets. Background Art

[0002] The existing micro-etching electrolysis recycling technology is an electrochemical oxidation method. By using BDD electrode materials with electrocatalytic effect, "hydroxyl radicals" are generated in the electrode reaction to convert sulfate (SO4 2- ) is converted into persulfate (S2O8 2- The most suitable current density for the anode is 3-4 times that for the cathode. Therefore, the current research direction of the anode plate is to optimize the current density and improve the electrocatalytic efficiency. Utility Model Content

[0003] In response to the problems raised in the background technology, the purpose of the present invention is to propose an anode plate composed of BDD electrode sheets, which solves the problem of low application efficiency of BDD materials in the anode plate in the existing sodium persulfate micro-etching electrolysis recycling technology.

[0004] To achieve this purpose, the present invention adopts the following technical solutions:

[0005] An anode plate composed of BDD electrode sheets, including a copper strip, a titanium skeleton and a plurality of BDD electrode sheets;

[0006] The titanium skeleton includes a connecting main frame and a plurality of mounting sub-frames, wherein the mounting sub-frames are connected to the connecting main frame, and the connecting main frame is connected to the copper bar, and the plurality of mounting sub-frames are arranged parallel to each other;

[0007] Several BDD electrode sheets are respectively installed on several mounting sub-frames. There is a front-to-back spacing D between the BDD electrode sheets on the same mounting sub-frame, and a left-right spacing L between the BDD electrode sheets on two adjacent mounting sub-frames.

[0008] Preferably, the number of the mounting sub-racks is two, and each mounting sub-rack is provided with three BDD electrode sheets.

[0009] Preferably, the plurality of front-to-back intervals D are the same, and the range of the front-to-back interval D is 60 mm to 120 mm;

[0010] The left-right interval L ranges from 50 mm to 90 mm.

[0011] Preferably, the BDD electrode sheet is rectangular.

[0012] Preferably, the BDD electrode sheet is a plate-shaped electrode sheet with a thickness H, and the thickness H is in the range of 1 mm to 4 mm.

[0013] Preferably, the connecting main frame includes two connecting longitudinal titanium bars and one connecting transverse titanium bar;

[0014] The two ends of the connecting horizontal titanium bar are respectively connected to one end of the two connecting vertical titanium bars, and the other end of the connecting vertical titanium bar is connected to the copper bar.

[0015] Preferably, the mounting subframe comprises two longitudinal titanium bars, one end of each longitudinal titanium bar being connected to the connecting transverse titanium bar;

[0016] The two longitudinal titanium bars are parallel to each other, and one of the BDD electrode sheets is connected to the two longitudinal titanium bars of the mounting subframe respectively.

[0017] Preferably, the titanium skeleton further includes an auxiliary transverse titanium bar, which is connected to the other ends of the four longitudinal titanium bars.

[0018] Preferably, the titanium skeleton and the copper bar, the connecting main frame and the mounting sub-frame, the mounting sub-frame and the auxiliary horizontal titanium bar, and the BDD electrode sheet and the titanium skeleton are connected by titanium screws.

[0019] Preferably, both ends of the BDD electrode sheet are provided with assembly holes respectively, and the longitudinal titanium bar is provided with a plurality of mounting holes, and the plurality of mounting holes are arranged at intervals along the length extension direction of the longitudinal titanium bar. The BDD electrode sheet and the longitudinal titanium bar are installed and connected by titanium screws passing through the assembly holes and the mounting holes.

[0020] Compared with the prior art, one of the above technical solutions has the following beneficial effects:

[0021] The unique structural design of the anode plate and the arrangement of the BDD electrodes address the multiple challenges of improving electrocatalytic efficiency, optimizing material utilization, and reducing costs. During the electrochemical oxidation process, the anode plate efficiently generates hydroxyl radicals, accelerating the conversion of sulfate to persulfate. Simultaneously, by controlling the spacing between the BDD electrodes, an optimal current density distribution is achieved, avoiding material waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural diagram of an embodiment of the utility model;

[0023] Figure 2 It is a schematic diagram of an embodiment of the present invention in use, wherein the cathode plate and the anode plate are arranged spaced apart;

[0024] Figure 3 This is a schematic diagram of the electric field radiated by the anode plate on the cathode plate in one embodiment of the present invention.

[0025] Among them: anode plate 10, cathode plate 20, copper bar 1, titanium skeleton 2, connecting main frame 21, connecting longitudinal titanium bar 211, connecting transverse titanium bar 212, mounting sub-frame 22, longitudinal titanium bar 221, mounting hole 222, auxiliary transverse titanium bar 23, BDD electrode sheet 3, assembly hole 31, front-to-back spacing D and left-to-right spacing L. DETAILED DESCRIPTION

[0026] The following describes embodiments of the present invention in detail. Examples of the embodiments 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 only to explain the present invention and are not to be construed as limiting the present invention.

[0027] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0028] Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or to implicitly specify the quantity of the technical features being referred to. Thus, a feature identified as "first," "second," and "third" may explicitly or implicitly include one or more of the features.

[0029] It should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in the present invention based on the specific circumstances.

[0030] The following is combined with Figures 1 to 3 The technical solution of the utility model is further illustrated through specific implementation methods.

[0031] An anode plate composed of BDD electrode sheets, including a copper strip 1, a titanium skeleton 2 and a plurality of BDD electrode sheets 3;

[0032] The titanium skeleton 2 includes a connecting main frame 21 and a plurality of mounting sub-frames 22, wherein the mounting sub-frames 22 are connected to the connecting main frame 21, and the connecting main frame 21 is connected to the copper bar 1, and the plurality of mounting sub-frames 22 are arranged parallel to each other;

[0033] Several BDD electrode sheets 3 are respectively installed on several mounting sub-racks 22 . There is a front-to-back spacing D between the BDD electrode sheets 3 on the same mounting sub-rack 22 , and a left-right spacing L between the BDD electrode sheets 3 on two adjacent mounting sub-racks 22 .

[0034] In the field of electrochemical oxidation, micro-etching electrolysis recycling technology has attracted widespread attention as an important treatment method. With the development of technology, the use of electrocatalytic BDD electrode materials has become the key to improving electrolysis efficiency. However, in practical applications, how to maintain electrolysis efficiency while reducing costs has become a pressing issue.

[0035] The present utility model proposes an anode plate composed of BDD electrode sheets, including a copper bar 1, a titanium skeleton 2 and a plurality of BDD electrode sheets 3. The titanium skeleton 2 is composed of a connecting main frame 21 and a plurality of mounting sub-frames 22. The mounting sub-frames 22 are connected to the connecting main frame 21, and the connecting main frame 21 is connected to the copper bar 1. This structure not only ensures the mechanical strength of the entire anode plate, but also achieves good current conduction. By arranging a plurality of mounting sub-frames 22 in parallel and installing a BDD electrode sheet 3 on each mounting sub-frame 22, a unique arrangement structure is formed. A certain front-to-back spacing D is maintained between the BDD electrode sheets 3 on the same mounting sub-frame 22, and a left-right spacing L is maintained between the BDD electrode sheets 3 on adjacent mounting sub-frames 22. This arrangement can effectively control the current density distribution and improve the electrocatalytic efficiency.

[0036] BDD electrode sheet 3 is the core component of micro-etching electrolysis recycling technology. It has excellent electrocatalytic performance and can produce highly active hydroxyl radicals in the electrode reaction to promote sulfate radical Persulfate By rationally arranging the position and spacing of the BDD electrode sheets 3, not only can the electrolysis efficiency be further improved, but also the efficient utilization of materials can be achieved.

[0037] Compared to traditional monolithic BDD electrodes, the split BDD electrode sheet design employed in this utility model offers significant advantages. First, it allows for more flexible adjustment of the anode's effective area, thereby better matching the cathode's optimal current density requirements. Second, this design significantly reduces BDD material usage, effectively controlling costs.

[0038] In practical applications, the anode plate of the present invention demonstrates excellent performance during electrochemical oxidation. The arrangement of the BDD electrode sheets 3 allows for more even current distribution across the entire anode plate, avoiding localized overreaction or underreaction. This not only improves electrocatalytic efficiency but also extends the life of the electrode.

[0039] To further illustrate, the titanium skeleton 2 not only provides mechanical support but also plays a crucial role in current distribution. The connecting main frame 21 ensures overall structural stability, while the mounting subframe 22 provides a flexible mounting platform for the BDD electrode sheets 3. This allows for modular mounting of the electrode sheets while maintaining structural strength, facilitating maintenance and replacement.

[0040] Through this unique structural design and layout, the utility model addresses the multiple challenges of improving electrocatalytic efficiency, optimizing material utilization, and reducing costs. During the electrochemical oxidation process, the anode plate efficiently generates hydroxyl radicals, accelerating the conversion of sulfate to persulfate. Simultaneously, by controlling the spacing between the BDD electrodes, the current density is optimized, avoiding material waste.

[0041] Furthermore, the number of the mounting sub-racks 22 is two, and each mounting sub-rack 22 is provided with three BDD electrode sheets 3 .

[0042] By providing two mounting sub-racks and installing three BDD electrode sheets 3 on each mounting sub-rack 22, the position and number of electrode sheets can be reasonably distributed. This design can improve the stability of the anode plate and ensure more uniform current distribution, thereby improving the overall performance of the anode plate.

[0043] Specifically, two mounting sub-frames 22 are arranged in parallel on the connecting main frame 21, and each mounting sub-frame 22 is provided with three BDD electrode sheets 3. This not only balances the overall weight distribution of the anode plate, but also ensures a uniform current distribution between each BDD electrode sheet during application. The mounting sub-frames 22 are interconnected with the connecting main frame 21 to further ensure the mechanical strength and stability of the entire structure. In addition, the front-to-back spacing and left-to-right spacing between the BDD electrode sheets 3 help to improve the overall electrocatalytic efficiency and ensure that the radiation is evenly distributed in the corresponding electric field area of ​​the cathode plate, so that during micro-etching electrolysis, the metal deposited on the cathode plate will not be too thick or too thin.

[0044] During the construction and installation process, each mounting sub-frame 22 is connected to the connecting main frame 21 by titanium screws and connected to the power supply using copper bars 1. This not only ensures that each BDD electrode sheet 3 receives power evenly, but also reduces damage to the electrode sheet caused by local excessive current.

[0045] Furthermore, the plurality of front-to-back intervals D are the same, and the range of the front-to-back interval D is 60 mm to 120 mm;

[0046] The left-right interval L ranges from 50 mm to 90 mm.

[0047] By properly determining the front-to-back spacing D and left-to-right spacing L between the BDD electrode sheets 3, uniform electric field distribution on the anode plate is achieved, reducing mutual interference between the electrodes. The standard range of front-to-back spacing D effectively prevents over-alignment, while the setting of left-to-right spacing L reduces electric field interference and optimizes current density during electrolysis.

[0048] In specific implementation, both the front-to-back spacing and the side spacing can be achieved by the installation position of the BDD electrode sheet 3 on the installation sub-frame 22 .

[0049] Furthermore, the BDD electrode sheet 3 is rectangular.

[0050] The rectangular design of the BDD electrode sheet 3 makes the anode plate more standardized and modular. This design facilitates the manufacture, assembly and maintenance of the BDD electrode sheet, and reduces production costs and complexity.

[0051] In addition, the rectangular BDD electrode sheet 3 helps to evenly distribute the current on the electrode sheet. Even current distribution can improve electrolysis efficiency, reduce energy consumption, and extend the service life of the electrode sheet.

[0052] Furthermore, the BDD electrode sheet 3 is a plate-shaped electrode sheet with a thickness H, and the thickness H is in the range of 1 mm to 4 mm.

[0053] By specifying the thickness range of the electrode sheet, the performance and durability of the electrode sheet in electrochemical applications can be guaranteed. The appropriate thickness not only provides sufficient mechanical strength to prevent the electrode sheet from breakage or deformation during use, but also optimizes the conductivity of the electrode sheet and improves the overall electrochemical performance of the electrode.

[0054] Specifically, in the micro-etching electrolytic copper recycling technology, the application of the anode plate 10 and the cathode plate 20 of the utility model is as follows: Figure 2 As shown, the anode plate 10 and the cathode plate 20 are arranged at intervals and parallel to each other. The specific area of ​​the BDD electrode sheet 3 set on the anode plate 10 will affect the electric field area radiated on the cathode plate 20. Furthermore, due to the influence of the tip effect, the edge and tip of the electrode sheet of the anode plate 10 will have relatively concentrated electric field lines, objectively causing the electric field distribution of the cathode plate 20 to be uneven. Therefore, the thickness of the electrode sheet will also affect the distribution of electric field lines between the cathode and anode. Figure 3 As shown, the anode plate of the present invention is as follows Figure 1The diagram shows the electric field radiated by the cathode plate 20 when the BDD electrode sheet 3 is provided, and the electric field is uniform.

[0055] It is worth noting that when micro-etching electrolytic copper, if the cathode current density is too large, the cathode current efficiency is reduced, and the cathode reaction will release a large amount of hydrogen, making the cathode plate 20 rough and burnt black; if the cathode current density is too small, the cathode reaction is slow, and the electroplating proceeds slowly, making the copper deposited at the cathode too thin and unable to be extracted. The most suitable current density for the anode plate 10 is 3-4 times the most suitable current density for the cathode plate 20. Therefore, by controlling the appropriate arrangement of the BDD electrode sheet 3 and the anode and cathode area ratio, the electrolysis efficiency of the anode can be fully utilized while saving BDD material costs. Therefore, it is necessary to control the cathode to anode area ratio to 3:1 to 4:1 (the anode area referred to here is the total area of ​​the BDD electrode sheet; the cathode area refers to the radiation area of ​​the anode electrode sheet radiating to the cathode plate). When the current density of the anode plate 10 is 4-4.5asd, the current density of the cathode plate 20 is correspondingly controlled to be 1-1.5asd. Therefore, controlling the front-to-back and left-to-right spacing of the BDD electrode sheets 3, their specific shape, and their thickness effectively solves the problem of electric field dispersion, preventing the deposited copper from becoming burnt (copper powder) or too thin (unremovable). Preferably, the electrode current density of the BDD electrode sheets 3 is controlled within a range of 0-4.5 ASD, with an optimal electrode current density of 4-4.5 ASD.

[0056] Furthermore, the connecting main frame 21 includes two connecting longitudinal titanium bars 211 and one connecting transverse titanium bar 212;

[0057] Both ends of the connecting horizontal titanium bar 212 are respectively connected to one end of the two connecting vertical titanium bars 211 , and the other end of the connecting vertical titanium bar 211 is connected to the copper bar 1 .

[0058] The main connecting frame 21, consisting of two longitudinal titanium bars 211 and one transverse titanium bar 212, enhances the structural stability of the anode plate. These bars 211 and 212 act as conductive elements, ensuring efficient current transmission across the anode plate. By optimizing the structure of the main connecting frame 21, expensive materials like titanium can be more efficiently utilized. This design reduces material waste and lowers production costs.

[0059] Furthermore, the mounting subframe 22 includes two longitudinal titanium bars 221 , one end of each longitudinal titanium bar 221 being connected to the connecting transverse titanium bar 212 ;

[0060] The two longitudinal titanium bars 221 are parallel to each other, and one of the BDD electrode sheets 3 is connected to the two longitudinal titanium bars 221 of the mounting subframe respectively.

[0061] The mounting subframe 22 is composed of two longitudinal titanium bars 221, one end of which is fixed by connecting transverse titanium bars 212 to form a stable frame structure. The BDD electrode sheet 3 is installed on the two longitudinal titanium bars 221 by a fixing mechanism such as screws or other connecting parts to achieve stable fixation of the BDD electrode sheet 3. Due to the parallel arrangement of the longitudinal titanium bars 221, each BDD electrode sheet 3 can be independently and firmly connected to the two longitudinal titanium bars 221. This design ensures that the BDD electrode sheet 3 will not loosen or shift due to vibration or external force during the electrolysis process. In addition, each BDD electrode sheet 3 is conductively connected to the two longitudinal titanium bars 221, which diverts the current to the two longitudinal titanium bars 221, reduces the total resistance of the titanium skeleton 2, and prevents the local current from being too large and causing the titanium skeleton 2 to heat up.

[0062] Furthermore, the titanium skeleton 2 further includes an auxiliary transverse titanium bar 23 , and the auxiliary transverse titanium bar 23 is connected to the other ends of the four longitudinal titanium bars 221 .

[0063] In the structure of the anode plate, by adding an auxiliary horizontal titanium bar 23 and connecting it to the other ends of the four vertical titanium bars 221, the stability of the entire titanium skeleton 2 can be effectively enhanced; at the same time, the total resistance of the titanium skeleton 2 can be reduced.

[0064] Furthermore, the titanium skeleton 2 and the copper bar 1 , the connecting main frame 21 and the mounting sub-frame 22 , the mounting sub-frame 22 and the auxiliary horizontal titanium bar 23 , and the BDD electrode sheet 3 and the titanium skeleton 2 are connected by titanium screws.

[0065] Titanium screws are used to connect the titanium skeleton 2 to the copper bar 1, the main frame 21 to the mounting sub-frame 22, the mounting sub-frame 22 to the auxiliary horizontal titanium bar 23, and the BDD electrode sheet 3 to the titanium skeleton 2 to ensure a firm connection between the various components. This connection method has high mechanical strength and can effectively prevent loosening or falling off during use, thereby improving the overall stability and reliability of the anode plate. At the same time, the use of titanium screws is combined with the corrosion resistance of titanium materials to further enhance the durability of the anode plate in different environments. In addition, as part of the conductive channel, the good electrical conductivity of the titanium screws ensures the smooth transmission of current on the anode plate. Connection through titanium screws can reduce contact resistance, improve current transmission efficiency, and thus optimize electrolysis performance.

[0066] Furthermore, both ends of the BDD electrode sheet 3 are respectively provided with assembly holes 31, and the longitudinal titanium bar 221 is provided with a plurality of mounting holes 222, and the plurality of mounting holes 222 are arranged at intervals along the length extension direction of the longitudinal titanium bar 221. The BDD electrode sheet 3 and the longitudinal titanium bar 221 are installed and connected by titanium screws passing through the assembly holes 31 and the mounting holes 222.

[0067] The design of the assembly holes 31 at both ends of the BDD electrode sheet 3 makes the connection between the BDD electrode sheet 3 and the longitudinal titanium bar 221 more stable. The BDD electrode sheet 3 is firmly fixed to the longitudinal titanium bar 221 by passing the titanium screws through the assembly holes 31 and the mounting holes 222, preventing the BDD electrode sheet 3 from falling off or shifting due to vibration or external force during operation. The mounting holes 222 are arranged at intervals along the length of the longitudinal titanium bar 221 to ensure that the installation position of the BDD electrode sheet 3 can be adjusted as needed to adapt to different design requirements. Titanium screw material has good corrosion resistance and mechanical strength. When used to fix the BDD electrode sheet 3, it not only extends the service life of the equipment, but also maintains stability at higher current density.

[0068] The technical principles of the present invention have been described above with reference to specific embodiments. These descriptions are intended solely to illustrate the principles of the present invention and should not be construed in any way as limiting the scope of protection of the present invention. Based on the explanations herein, those skilled in the art will be able to devise other specific implementations of the present invention without inventive effort, and such implementations will fall within the scope of protection of the present invention.

Claims

1. An anode plate composed of BDD electrode sheets, characterized by: It includes copper bars, titanium skeleton and several BDD electrode sheets; The titanium skeleton includes a connecting main frame and a plurality of mounting sub-frames, wherein the mounting sub-frames are connected to the connecting main frame, and the connecting main frame is connected to the copper bar, and the plurality of mounting sub-frames are arranged parallel to each other; Several BDD electrode sheets are respectively installed on several mounting sub-frames. There is a front-to-back spacing D between the BDD electrode sheets on the same mounting sub-frame, and a left-right spacing L between the BDD electrode sheets on two adjacent mounting sub-frames.

2. The anode plate composed of BDD electrode sheets according to claim 1, characterized in that: There are two mounting sub-racks, and each mounting sub-rack is provided with three BDD electrode sheets.

3. The anode plate composed of BDD electrode sheets according to claim 2, characterized in that: The plurality of front-to-back intervals D are all the same, and the range of the front-to-back interval D is 60 mm to 120 mm; The left-right interval L ranges from 50 mm to 90 mm.

4. The anode plate composed of BDD electrode sheets according to claim 3, characterized in that: The BDD electrode sheet is rectangular.

5. The anode plate composed of BDD electrode sheets according to claim 4, characterized in that: The BDD electrode sheet is a plate-shaped electrode sheet with a thickness H, and the thickness H is in the range of 1 mm to 4 mm.

6. The anode plate composed of BDD electrode sheets according to claim 5, characterized in that: The connecting main frame includes two connecting longitudinal titanium bars and one connecting transverse titanium bar; The two ends of the connecting horizontal titanium bar are respectively connected to one end of the two connecting vertical titanium bars, and the other end of the connecting vertical titanium bar is connected to the copper bar.

7. The anode plate composed of BDD electrode sheets according to claim 6, characterized in that: The mounting subframe includes two longitudinal titanium bars, one end of each longitudinal titanium bar is connected to the connecting transverse titanium bar; The two longitudinal titanium bars are parallel to each other, and one of the BDD electrode sheets is connected to the two longitudinal titanium bars of the mounting subframe respectively.

8. The anode plate composed of BDD electrode sheets according to claim 7, characterized in that: The titanium skeleton further includes an auxiliary transverse titanium bar, which is connected to the other ends of the four longitudinal titanium bars.

9. The anode plate composed of BDD electrode sheets according to claim 8, characterized in that: The titanium skeleton and the copper bar, the connecting main frame and the mounting sub-frame, the mounting sub-frame and the auxiliary horizontal titanium bar, and the BDD electrode sheet and the titanium skeleton are mounted and connected by titanium screws.

10. The anode plate composed of BDD electrode sheets according to claim 7, characterized in that: Both ends of the BDD electrode sheet are respectively provided with assembly holes, and the longitudinal titanium bar is provided with several mounting holes, which are arranged at intervals along the length extension direction of the longitudinal titanium bar. The BDD electrode sheet and the longitudinal titanium bar are installed and connected by titanium screws passing through the assembly holes and the mounting holes.

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