A battery pole piece processing system and pole piece processing method

Abstract

The application relates to a battery pole piece processing system and a pole piece processing method, the processing system comprising a double-shaft shredder, a first hammer crusher, a second hammer crusher and a pulverizer, the double-shaft shredder being located above the first hammer crusher, the second hammer crusher being located between the first hammer crusher and the pulverizer, a first circular vibrating screen being arranged above the second hammer crusher, a first material collecting device being arranged on one side of the second hammer crusher, a second circular vibrating screen being arranged above the pulverizer, a second material collecting device being arranged on one side of the pulverizer, a third circular vibrating screen being arranged on the side of the second circular vibrating screen away from the first circular vibrating screen, a third material collecting device being arranged below the third circular vibrating screen, a material collecting system being arranged between the first hammer crusher and the first circular vibrating screen, between the second hammer crusher and the second circular vibrating screen and between the pulverizer and the third circular vibrating screen, and each material collecting system being connected with a dust removal system.

Description

Technical Field

[0001] This invention belongs to the field of battery electrode recycling and processing technology, and relates to a battery electrode processing system and electrode processing method. Background Technology

[0002] With the development of new energy technologies, battery production is gradually increasing, making the recycling and disposal of waste batteries a pressing issue. Electrodes, divided into positive and negative electrodes, are crucial components of batteries. Positive electrodes are made by coating aluminum foil with a lithium-ion slurry, while negative electrodes are made by coating copper foil with a slurry primarily composed of graphite. Currently, the recycling and disposal of battery electrodes typically involves crushing and screening for collection. However, existing processing lines suffer from the following problems:

[0003] 1. The entire production line is long, occupies a large space, and has a high cost.

[0004] 2. The material is drawn into the next step by the air force provided by the blower in the material collection system. As the material passes through the blower blades, the blades wear out significantly and are prone to jamming.

[0005] 3. The use of conveyor belts for transportation in multiple stages can easily lead to material leakage and jamming. Summary of the Invention

[0006] To overcome the shortcomings of the prior art, the present invention provides a battery electrode processing system and electrode processing method.

[0007] A battery electrode processing system includes a twin-shaft shredder, a first hammer crusher, a second hammer crusher, and a grinding mill, as well as a first circular vibrating screen, a first collecting device, a second circular vibrating screen, a second collecting device, a third circular vibrating screen, a third collecting device, a drawer-type iron separator, a collecting system, and a dust removal system.

[0008] The dual-shaft shredder is located above the first hammer crusher, the first circular vibrating screen is located above the second hammer crusher, the first collecting device is located on one side of the second hammer crusher, the second circular vibrating screen is located above the grinding mill, the second collecting device is located on one side of the grinding mill, the second hammer crusher is located between the first hammer crusher and the grinding mill, the third circular vibrating screen is located on the side of the second circular vibrating screen away from the first circular vibrating screen, the third collecting device is located below the third circular vibrating screen, and the drawer-type iron separator is located between the first circular vibrating screen and the second hammer crusher;

[0009] A material collection system is provided between the first hammer crusher and the first circular vibrating screen, between the second hammer crusher and the second circular vibrating screen, and between the grinding mill and the third circular vibrating screen. Each material collection system is connected to the dust removal system.

[0010] As a preferred embodiment of the present invention, the material collection system includes a conveying pipe and a conveying hopper. The discharge port of the conveying pipe is connected to the inlet of the conveying hopper. The inlet of the conveying pipe is connected to the discharge ports of the first hammer crusher, the second hammer crusher, and the grinding mill, respectively. The discharge port of the conveying hopper is connected to the inlet of the first circular vibrating screen, the second circular vibrating screen, and the third circular vibrating screen, respectively. The conveying hopper is also connected to the dust removal system.

[0011] As a preferred embodiment of the present invention, the invention includes a large platform, on which the dual-shaft shredder, the first circular vibrating screen, the second circular vibrating screen, and the third circular vibrating screen are respectively fixed.

[0012] As a preferred embodiment of the present invention, the third circular vibrating screen is provided with discharge ports in three directions, and the third material collection device includes three material collection components.

[0013] Each of the material collection components includes a connecting pipe, a bag clamp, a ton bag, and a ton bag frame. The ton bag is fixed on the ton bag frame. The inlet of the ton bag is connected to the outlet of the connecting pipe through the bag clamp. The inlet of the connecting pipe is connected to one of the outlets of the third circular vibrating screen.

[0014] As a preferred embodiment of the present invention, the dual-shaft shredder includes a housing, a first crushing roller, and a second crushing roller that matches the first crushing roller.

[0015] The first crushing roller and the second crushing roller each include a crushing shaft and a plurality of crushing blades. The plurality of crushing blades are spaced apart on the crushing shaft. The crushing shaft is rotatably disposed in the housing. The plurality of crushing blades on the first crushing roller and the plurality of crushing blades on the second crushing roller are staggered.

[0016] A drive assembly for rotating the crushing shaft is provided on the outside of the housing.

[0017] As a preferred embodiment of the present invention, the inner sidewall of the housing is provided with a plurality of crushing teeth along the crushing axis, and a gap is formed between two adjacent crushing blades, with the plurality of crushing teeth respectively placed in one of the gaps.

[0018] As a preferred embodiment of the present invention, a conveyor belt is provided on one side of the dual-shaft shredder, the discharge port of the conveyor belt is connected to the inlet of the dual-shaft shredder, a magnetic separator is provided at the discharge port of the conveyor belt, a movable support is provided at the bottom of the conveyor belt, and a telescopic support leg is also provided at the bottom of the movable support.

[0019] As a preferred embodiment of the present invention, a buffer hopper is provided between the grinding mill and the second circular vibrating screen. The inlet of the buffer hopper is connected to one of the outlets of the second circular vibrating screen, and the outlet of the buffer hopper is connected to the inlet of the grinding mill.

[0020] A method for processing battery electrode sheets, the method comprising the following steps:

[0021] S1: The electrode sheets are initially crushed by a twin-shaft shredder, breaking them into long strips of material;

[0022] S2: The long strip material is further crushed by the first hammer crusher, and the crushed material is conveyed to the first circular vibrating screen through the collection system.

[0023] S3: The material after the second crushing is screened by the first circular vibrating screen. The screened black powder is collected by the first collection device. The material that does not pass the screening is crushed for the third time by the second hammer crusher. The crushed material is transported to the second circular vibrating screen through the collection system.

[0024] S4: The material after the third crushing is screened by the second circular vibrating screen. The screened black powder is collected by the second collection device. The material that does not pass the screening is ground by the grinding mill. The ground material is transported to the third circular vibrating screen through the collection system.

[0025] S5: The ground material is screened by the third circular vibrating screen to separate the diaphragm, aluminum particles and black powder, and then collected by the third collecting device.

[0026] As a preferred technical solution of the present invention, the dust removal system provides wind power to the material collection system.

[0027] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0028] 1. This invention places the twin-shaft shredder above the first hammer crusher, replaces the drum screen with a circular vibrating screen, and sets the material collection device below the corresponding circular vibrating screen. The intermediate conveyor belt is eliminated, and the twin-shaft shredder, the first circular vibrating screen, the second circular vibrating screen, and the third circular vibrating screen are fixed by a large platform. This makes better use of vertical space, not only shortens the length of the production line and reduces the budget, but also reduces the probability of material leakage and jamming on the intermediate conveyor belt. The layout of the entire production line is more reasonable and facilitates maintenance.

[0029] 2. This invention uses a fan in the dust removal system to drive airflow in the material collection system, drawing the material into the next step. Because the fan is located at the end of the entire production line, the air before the fan is purified. Eliminating the fan in the material collection system not only significantly reduces fan blade wear and prevents blade jamming, but also reduces the overall power consumption of the line.

[0030] 3. In this invention, the material collection device is set below the corresponding circular vibrating screen. The diaphragm, aluminum particles and black powder are directly bagged from the discharge port of the circular vibrating screen without further conveying, which reduces the air volume required by the system and avoids material spillage and leakage. Attached Figure Description

[0031] Figure 1 The accompanying drawings are for reference only;

[0032] Figure 2 This is a front view structural diagram of the present invention;

[0033] Figure 3 This is a top view of the structure of the present invention;

[0034] Figure 4 This is a partial three-dimensional schematic diagram of the structure of the present invention;

[0035] Figure 5 This is a schematic diagram of a dual-shaft shredder;

[0036] Figure 6 This is a schematic diagram of the material collection assembly.

[0037] Figure 7 This is a schematic diagram of the dust removal system.

[0038] Figure 8 This is a flowchart of the present invention;

[0039] Figure 9 A flowchart of a dust removal system;

[0040] In the diagram: 1. Twin-shaft shredder; 111. Shell; 112. First crushing roller; 113. Second crushing roller; 114. Feed hopper; 115. Drive assembly; 2. First hammer crusher; 3. Second hammer crusher; 4. Grinding mill; 5. First circular vibrating screen; 6. First collection device; 7. Second circular vibrating screen; 8. Second collection device; 9. Third circular vibrating screen; 10. Third collection device; 101. Connecting pipe; 102. Bag clamp; 103. Ton bag; 104. Ton bag frame; 11. Collection system; 12. Conveyor belt; 13. Dust removal system; 131. Cyclone dust collector; 132. Pulse dust collector; 133. Spray tower; 134. Fan; 14. Buffer silo; 15. Rotary drum screen. Detailed Implementation

[0041] To facilitate understanding of the present invention, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of the invention are shown in the drawings. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a thorough and complete understanding of the disclosure of the invention.

[0042] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0043] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0044] This invention provides a battery electrode processing system, mainly used for recycling materials such as lithium iron phosphate electrodes or ternary electrodes, hereinafter referred to as electrodes or battery electrodes, without specifying the type of electrode to be processed. It should be noted that if the material is a negative electrode, the powder after processing will be copper and carbon powder; if it is a positive electrode, the powder after processing will be aluminum and lithium iron phosphate powder / ternary lithium electrode powder.

[0045] In the following embodiments, carbon powder or lithium iron phosphate powder / ternary lithium electrode powder are collectively referred to as black powder, and the positive electrode sheet is used as an example for illustration.

[0046] See appendix Figures 2-4A battery electrode processing system includes a twin-shaft shredder 1, a first hammer crusher 2, a second hammer crusher 3, a mill 4, a first circular vibrating screen 5, a first collecting device 6, a second circular vibrating screen 7, a second collecting device 8, a third circular vibrating screen 9, a third collecting device 10, a drawer-type iron separator, a collecting system 11, a conveyor belt 12, a dust removal system 13, and a large platform. The conveyor belt 12 is located on one side of the twin-shaft shredder 1, and its discharge port is connected to the inlet of the twin-shaft shredder 1 via a rubber flexible connection. A magnetic separator is installed at the discharge port of the conveyor belt 12. The twin-shaft shredder 1 is located above the first hammer crusher 2, the first circular vibrating screen 5 is located above the second hammer crusher 3, the first collecting device 6 is located on one side of the second hammer crusher 3, and the second circular vibrating screen 7 is located on the mill. Above mill 4, the second collecting device 8 is located on one side of mill 4, the second hammer crusher 3 is located between the first hammer crusher 2 and mill 4, the third circular vibrating screen 9 is located on the side of the second circular vibrating screen 7 away from the first circular vibrating screen 5, the third collecting device 10 is located below the third circular vibrating screen 9, and the drawer-type iron separator is located between the first circular vibrating screen 5 and the second hammer crusher 3; the twin-shaft shredder 1, the first circular vibrating screen 5, the second circular vibrating screen 7, and the third circular vibrating screen 9 are respectively fixed on the large platform; a collecting system 11 is respectively set between the first hammer crusher 2 and the first circular vibrating screen 5, between the second hammer crusher 3 and the second circular vibrating screen 7, and between mill 4 and the third circular vibrating screen 9. Each collecting system 11 is connected to a dust removal system 13, which provides airflow to the collecting system 11. The entire processing production line is controlled by a control system.

[0047] During recycling, the battery electrode sheets to be processed are transported to the top of the twin-shaft shredder 1 via conveyor belt 12. A magnetic separator drum separates the magnetic metal from the battery electrode sheets. The magnetic separator drum facilitates the recovery of the magnetic metal and also facilitates subsequent separation of black powder and aluminum particles. The twin-shaft shredder 1 initially crushes the battery electrode sheets into long strips, which facilitates further crushing by the first hammer crusher 2. The first hammer crusher 2 further crushes the strips, producing black powder and incompletely crushed lumps. These are then transported to the first circular vibrating screen 5 via the collection system 11. The first circular vibrating screen 5 screens the material after the second crushing. The screened black powder is collected by the first collection device 6, while the material that fails to pass the screening is processed a third time by the second hammer crusher 3. The crushing process involves crushing materials, including black powder and incompletely crushed lumps. These materials are then transported to a second circular vibrating screen 7 via a collection system 11. The second circular vibrating screen 7 screens the materials after the third crushing process. The screened black powder is collected by a second collection device 8, while the oversize material that fails to pass the screen is ground by a grinding mill 4. The ground material is then transported to a third circular vibrating screen 9 via the collection system 11. The third circular vibrating screen 9 screens the ground material, separating the diaphragm, aluminum particles, and black powder, which are then collected by a third collection device 10. The dust removal system 13 not only purifies the exhaust gas generated during electrode processing but also provides airflow to the collection system 11, drawing the material into the next step.

[0048] This invention places the twin-shaft shredder 1 above the first hammer crusher 2, replaces the drum screen 15 with a circular vibrating screen, sets the material collection device below the corresponding circular vibrating screen, eliminates the intermediate conveyor belt, and fixes the twin-shaft shredder 1, the first circular vibrating screen 5, the second circular vibrating screen 7, and the third circular vibrating screen 9 through a large platform, making better use of vertical space. This not only shortens the length of the production line and reduces the budget, but also reduces the probability of material leakage and jamming on the intermediate conveyor belt. The layout of the entire production line is more reasonable and facilitates maintenance.

[0049] Preferred embodiments, such as Figures 2-4 As shown, the material collection system 11 includes a conveying pipe and a conveying hopper. The discharge port of the conveying pipe is connected to the inlet of the conveying hopper. The inlet of the conveying pipe is connected to the discharge port of the first hammer crusher 2, the discharge port of the second hammer crusher 3, and the discharge port of the grinding mill 4, respectively. The discharge port of the conveying hopper is connected to the inlet of the first circular vibrating screen 5, the inlet of the second circular vibrating screen 7, and the inlet of the third circular vibrating screen 9, respectively, via a rubber flexible connection. The conveying hopper is also connected to the dust removal system 13.

[0050] In this embodiment, the dust removal system 13 provides airflow to drive the airflow in the material collection system 11 and draw the material into the next step. The blower in the material collection system 11 is eliminated, which can not only greatly reduce the wear of the blower blades and avoid the blades from getting stuck after wear, but also reduce the power of the entire line.

[0051] Preferred embodiments, such as Figure 3 , Figure 4 As shown, the first circular vibrating screen 5 has two discharge ports. One discharge port is connected to the inlet of the first collecting device 6 via a rubber flexible connection. After the black powder flows out from the discharge port, it enters the first collecting device 6 under its own gravity and is collected by the first collecting device 6. The other discharge port is connected to the inlet of the second hammer crusher 3 via a rubber flexible connection. Incompletely crushed lumpy materials enter the second hammer crusher 3 through this discharge port. The discharge port configuration of the second circular vibrating screen 7 is the same as that of the first circular vibrating screen 5.

[0052] like Figure 4 As shown, the third circular vibrating screen 9 includes two layers of filter screens. The third circular vibrating screen 9 is provided with discharge ports in three directions. The three discharge ports correspond to the discharge of the oversize material, the middle material, and the undersize material, respectively. The oversize material is a diaphragm, the middle material is aluminum particles, and the undersize material is black powder.

[0053] The third collecting device 10 includes three collecting components, such as... Figure 6 As shown, each collection assembly includes a connecting pipe 101, a bag clamp 102 with a breather valve, a ton bag 103, and a ton bag frame 104. The ton bag 103 is fixed on the ton bag frame 104. The inlet of the ton bag 103 is connected to the outlet of the connecting pipe 101 through the bag clamp 102. The inlet of the connecting pipe 101 is connected to one of the outlets of the third circular vibrating screen 9 through a rubber flexible connection. The connecting pipe 101 can be a one-outlet-two-pipe design, correspondingly using two bag clamps 102, two ton bags 103, and two ton bag frames 104. The three collection assemblies collect the diaphragm, aluminum particles, and black powder respectively.

[0054] In this embodiment, the material collection device is set below the corresponding circular vibrating screen. The diaphragm, aluminum particles and black powder are directly bagged from the discharge port of the circular vibrating screen without further conveying, which reduces the air volume required by the system and avoids material spillage and leakage.

[0055] Preferred embodiments, such as Figure 2As shown, a dust cover is provided on the top of the conveyor belt 12 to reduce the leakage of dust from the battery electrodes. An inlet is provided on the side of the dust cover away from the twin-shaft shredder 1, through which the battery electrodes are poured onto the conveyor belt 12. A movable support is provided at the bottom of the conveyor belt 12 to facilitate the adjustment of the position of the conveyor belt 12. A telescopic support leg is also provided at the bottom of the movable support. When the conveyor belt 12 is moved, the telescopic support leg is in a retracted state. When the conveyor belt 12 moves to the designated position (the feeding position), the telescopic support leg is extended until the movable support leaves the ground, thus preventing the conveyor belt 12 from moving during the feeding process.

[0056] Preferred embodiments, such as Figure 5 As shown, the dual-shaft shredder 1 includes a housing 111, a first crushing roller 112, and a second crushing roller 113 that matches the first crushing roller 112. A feed hopper 114 is provided on one side of the top of the housing 111. The first crushing roller 112 and the second crushing roller 113 each include a crushing shaft and a plurality of crushing blades. The plurality of crushing blades are spaced apart on the crushing shaft, which is rotatably mounted inside the housing 111. The plurality of crushing blades on the first crushing roller 112 and the plurality of crushing blades on the second crushing roller 113 are staggered. A drive assembly 115 for driving the crushing shaft to rotate is provided on the outside of the housing 111. The drive assembly 115 can be a motor. A plurality of crushing teeth are distributed along the crushing shaft direction on the inner sidewall of the housing 111. A gap is formed between two adjacent crushing blades, and the plurality of crushing teeth are respectively placed in one of the gaps. The housing 111 and the motor are respectively mounted on a first fixed frame.

[0057] In this embodiment, the elongated material flows out from the discharge port of the twin-shaft shredder 1 and enters from the feed hopper 114 at the top of the housing 111. The drive assembly 115 drives the first crushing roller 112 and the second crushing roller 113 to rotate in opposite directions, thereby performing secondary crushing on the elongated material.

[0058] Preferred embodiments, such as Figure 4 As shown, a buffer silo 14 is provided between the grinding mill 4 and the second circular vibrating screen 7. The inlet of the buffer silo 14 is connected to one of the outlets of the second circular vibrating screen 7 via a rubber flexible connection, and the outlet of the buffer silo 14 is connected to the inlet of the grinding mill 4. The buffer silo 14 stores the oversize material in the second circular vibrating screen 7. A flow-limiting valve can be installed at the outlet of the buffer silo 14 to prevent the oversize material from accumulating inside the grinding mill 4 and affecting the grinding quality of the grinding mill 4.

[0059] Preferred embodiments, such as Figure 7As shown, the dust removal system 13 includes a cyclone dust collector 131, a pulse dust collector 132, a spray tower 133, a fan 134, and an exhaust chimney. The cyclone dust collector 131, the pulse dust collector 132, and the spray tower 133 are arranged in sequence. The cyclone dust collector 131 is connected to the collection system 11. The cyclone dust collector 131 filters and settles the small amount of black powder carried out by the airflow in the collection system 11. The pulse dust collector 132 filters and settles the black powder in the gas flowing out of the cyclone dust collector 131 again. The spray tower 133 treats the gas flowing out of the pulse dust collector 132 as waste gas. The fan 134 provides airflow to drive the gas to flow in the collection system 11 and the dust removal system 13. The purified exhaust gas is discharged through the exhaust chimney.

[0060] This invention uses a fan 134 within the dust removal system 13 to drive airflow within the material collection system 11, drawing materials into the next step. Because the fan 134 is positioned at the end of the entire production line, the air preceding the fan 134 is purified, significantly reducing fan blade wear.

[0061] A method for processing battery electrode sheets includes the following steps:

[0062] S1: The electrode sheets are initially crushed by the twin-shaft shredder 1, and the electrode sheets are broken into long strips of material.

[0063] S2: The long strip material is further crushed by the first hammer crusher 2, and the crushed material is conveyed to the first circular vibrating screen 5 through the collection system 11.

[0064] S3: The material after the second crushing is screened by the first circular vibrating screen 5. The screened black powder is collected by the first collecting device 6. The material that does not pass the screening is crushed for the third time by the second hammer crusher 3. The crushed material is transported to the second circular vibrating screen 7 through the collecting system 11.

[0065] S4: The material after the third crushing is screened by the second circular vibrating screen 7. The screened black powder is collected by the second collecting device 8. The material that does not pass the screening is ground by the grinding mill 4. The ground material is transported to the third circular vibrating screen 9 through the collecting system 11.

[0066] S5: The ground material is screened by the third circular vibrating screen 9, and the diaphragm, aluminum particles and black powder are screened out separately and collected by the third collecting device 10.

[0067] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A battery electrode processing system, comprising a dual-shaft shredder, a first hammer crusher, a second hammer crusher, and a grinding mill, characterized in that, It also includes a first circular vibrating screen, a first material collection device, a second circular vibrating screen, a second material collection device, a third circular vibrating screen, a third material collection device, a drawer-type iron separator, a material collection system, and a dust removal system; The dual-shaft shredder is located above the first hammer crusher, the first circular vibrating screen is located above the second hammer crusher, the first collecting device is located on one side of the second hammer crusher, the second circular vibrating screen is located above the grinding mill, the second collecting device is located on one side of the grinding mill, the second hammer crusher is located between the first hammer crusher and the grinding mill, the third circular vibrating screen is located on the side of the second circular vibrating screen away from the first circular vibrating screen, the third collecting device is located below the third circular vibrating screen, and the drawer-type iron separator is located between the first circular vibrating screen and the second hammer crusher; A material collection system is provided between the first hammer crusher and the first circular vibrating screen, between the second hammer crusher and the second circular vibrating screen, and between the grinding mill and the third circular vibrating screen. Each material collection system is connected to the dust removal system. The material collection system includes a conveying pipe and a conveying hopper. The discharge port of the conveying pipe is connected to the inlet of the conveying hopper. The inlet of the conveying pipe is connected to the discharge ports of the first hammer crusher, the second hammer crusher, and the grinding mill, respectively. The discharge port of the conveying hopper is connected to the inlet of the first circular vibrating screen, the second circular vibrating screen, and the third circular vibrating screen, respectively. The conveying hopper is also connected to the dust removal system. The large platform includes the dual-shaft shredder, the first circular vibrating screen, the second circular vibrating screen, and the third circular vibrating screen, which are respectively fixed on the large platform. The third circular vibrating screen is provided with discharge ports in three directions, and the third material collection device includes three material collection components. Each of the material collection components includes a connecting pipe, a bag clamp, a ton bag, and a ton bag frame. The ton bag is fixed on the ton bag frame. The inlet of the ton bag is connected to the outlet of the connecting pipe through the bag clamp. The inlet of the connecting pipe is connected to one of the outlets of the third circular vibrating screen. The dust removal system includes a cyclone dust collector, a pulse dust collector, a spray tower, a fan, and an exhaust chimney. The cyclone dust collector, pulse dust collector, and spray tower are arranged in sequence. The cyclone dust collector is connected to the collection system. The cyclone dust collector filters and settles the small amount of black powder carried out by the airflow in the collection system. The pulse dust collector filters and settles the black powder in the gas flowing out of the cyclone dust collector again. The spray tower treats the exhaust gas flowing out of the pulse dust collector. The fan provides airflow to drive the gas to flow in the collection system and the dust removal system. The purified exhaust gas is discharged through the exhaust chimney.

2. The battery electrode processing system as described in claim 1, characterized in that, The dual-shaft shredder includes a housing, a first crushing roller, and a second crushing roller that matches the first crushing roller. The first crushing roller and the second crushing roller each include a crushing shaft and a plurality of crushing blades. The plurality of crushing blades are spaced apart on the crushing shaft. The crushing shaft is rotatably disposed in the housing. The plurality of crushing blades on the first crushing roller and the plurality of crushing blades on the second crushing roller are staggered. A drive assembly for rotating the crushing shaft is provided on the outside of the housing.

3. The battery electrode processing system as described in claim 2, characterized in that, The inner wall of the housing is provided with a plurality of crushing teeth along the crushing axis, and a gap is formed between two adjacent crushing blades, with the plurality of crushing teeth respectively placed in one of the gaps.

4. The battery electrode processing system as described in claim 1, characterized in that, A conveyor belt is provided on one side of the twin-shaft shredder. The discharge port of the conveyor belt is connected to the inlet of the twin-shaft shredder. A magnetic separator is provided at the discharge port of the conveyor belt. A movable support is provided at the bottom of the conveyor belt. A telescopic support leg is also provided at the bottom of the movable support.

5. The battery electrode processing system as described in claim 1, characterized in that, A buffer hopper is provided between the grinding mill and the second circular vibrating screen. The inlet of the buffer hopper is connected to one of the outlets of the second circular vibrating screen, and the outlet of the buffer hopper is connected to the inlet of the grinding mill.

6. A battery electrode processing method, applied to the battery electrode processing system according to any one of claims 1-5, characterized in that, The method includes the following steps: S1: The electrode sheets are initially crushed by a twin-shaft shredder, breaking them into long strips of material; S2: The long strip material is further crushed by the first hammer crusher, and the crushed material is conveyed to the first circular vibrating screen through the collection system. S3: The material after the second crushing is screened by the first circular vibrating screen. The screened black powder is collected by the first collection device. The material that does not pass the screening is crushed for the third time by the second hammer crusher. The crushed material is transported to the second circular vibrating screen through the collection system. S4: The material after the third crushing is screened by the second circular vibrating screen. The screened black powder is collected by the second collection device. The material that does not pass the screening is ground by the grinding mill. The ground material is transported to the third circular vibrating screen through the collection system. S5: The ground material is screened by the third circular vibrating screen to separate the diaphragm, aluminum particles and black powder, and then collected by the third collecting device.

7. A battery electrode processing method as described in claim 6, characterized in that, The dust removal system provides airflow to the material collection system.

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