Physical sorting device for battery powder

Abstract

The utility model provides a physical sorting device for battery powder, the physical sorting device comprises a cyclone separation device, a battery powder vibration sorting device and a metal powder vibration sorting device, the cyclone separation device comprises a cyclone separation body and a conical separation cylinder connected below the cyclone separation body, a battery powder feeding port is formed in the side wall of the top of the cyclone separation body, a metal powder discharging port is formed in one side of the middle of the side wall of the cyclone separation body, a battery powder discharging port is formed in the bottom of the conical separation barrel, and the metal powder discharging port communicates with a feeding port of a metal powder vibration sorting device through a metal powder conveying pipeline. And the battery powder discharging hole is communicated with a feeding hole of the battery powder vibration sorting device through a battery powder conveying pipeline. The physical sorting device provided by the utility model is used for finely sorting crushed battery pole piece powder, and is higher in sorting precision and sorting efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical battery recycling, in particular to a physical separation device for battery powder. Background Art

[0002] Lithium-ion batteries are widely used in 3C consumer electronics, new energy vehicles, energy storage and other fields. In recent years, with the rapid development of new energy vehicles, the installed capacity of lithium-ion power batteries has increased year by year, and the demand for positive and negative electrode materials of lithium-ion batteries has also increased year by year.

[0003] Typical positive electrode materials for lithium-ion batteries include lithium cobalt oxide LiCoO2, lithium nickel cobalt manganese oxide LiNi x Co y Mn 1-x- y O2, LiNi x Co y Al 1-x-y O2, lithium manganese oxide LiMn2O4 and lithium iron phosphate LiFePO4, etc. On the one hand, rare metal or precious metal resources such as lithium, nickel, cobalt in the positive electrode materials of lithium-ion batteries have high recycling value. Recycling them is conducive to maintaining the recycling of resources and maintaining the relative stability of raw material prices, which is of great significance to maintaining the sustainable development of the industrial chain; on the other hand, with the mass production and use of electronic products, the number of scrapped or retired lithium-ion batteries is large. If they are not properly handled, they will cause huge pollution to the environment.

[0004] At present, the main recycling methods for retired batteries or low-quality batteries include metal resource recovery and cascade utilization. From the perspective of resource recovery, it is necessary to recover high-value metals or metal compound powders such as lithium, nickel, cobalt, manganese, aluminum, and copper in batteries. The existing process flow for recycling used batteries mainly includes: battery disassembly, electrode separation, electrode loading, electrode transportation, electrode shredding, electrode crushing, material screening, and material collection.

[0005] However, in the existing process, the powder of the battery pole pieces after crushing cannot be finely sorted, and the finished products after sorting cannot meet the technical requirements; the battery pole piece powder has no filtering device after air separation, resulting in a high impurity content in the finished products, and the purity cannot meet the technical requirements; and the battery pole piece powder has no filtering device after air separation, and needs to re-enter the sorting process, which increases the workload, energy consumption and waste of resources.

[0006] Therefore, developing a physical separation device for battery powder is a technical problem that urgently needs to be solved in this field. Utility Model Content

[0007] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a physical sorting device for battery powder, which can perform fine sorting on crushed battery pole piece powder with high sorting accuracy and efficiency.

[0008] To achieve this purpose, the utility model adopts the following technical solutions:

[0009] The utility model provides a physical separation device for battery powder, the physical separation device comprising a first frame and a cyclone separation device arranged on the first frame, and further comprising a second frame and a battery powder vibration separation device and a metal powder vibration separation device arranged adjacent to each other on the second frame;

[0010] The cyclone separation device comprises a cyclone separation body and a conical separation cylinder connected to the bottom of the cyclone separation body; a battery powder feed port is arranged at the top side wall of the cyclone separation body, and a metal powder discharge port is arranged at one side of the middle part of the side wall; a battery powder discharge port is arranged at the bottom of the conical separation cylinder;

[0011] The metal powder discharge port is connected to the feed port of the metal powder vibration sorting device through the metal powder conveying pipeline; the battery powder discharge port is connected to the feed port of the battery powder vibration sorting device through the battery powder conveying pipeline.

[0012] The existing waste battery recycling process generally includes the steps of battery disassembly, electrode separation, electrode loading, electrode conveying, electrode shredding, electrode crushing, material screening and material collection. The physical sorting device provided by the utility model is aimed at fine sorting and processing of crushed battery electrode powder. First, the battery powder and metal powder are preliminarily separated by a cyclone separation device, and then they are respectively sent to the battery powder vibration sorting device and the metal powder vibration sorting device through the battery powder conveying pipeline and the metal powder conveying pipeline. After that, they are filtered and sorted to obtain the finished products of battery powder and metal powder respectively.

[0013] Preferably, the battery powder vibration sorting device comprises a first sorting filter frame, a first vibration screen and a battery powder collecting device which are sequentially connected from top to bottom.

[0014] Preferably, the first sorting and filtering frame includes an upper frame, a side frame and a bottom surface; in the first sorting and filtering frame, a vibration device is arranged between the bottom of the upper frame and the top of the side frame, and a vibration device is arranged between the bottom of the side frame and the bottom surface.

[0015] Preferably, in the first sorting and filtering frame, the bottom surface is provided with a screen.

[0016] Preferably, a first conical discharge port is provided at the bottom of the battery powder collecting device.

[0017] Preferably, the metal powder vibration sorting device comprises a second sorting filter frame, a second vibration screen and a metal powder collecting device which are sequentially connected from top to bottom.

[0018] In the utility model, the first vibrating screen and the second vibrating screen are connected to the power output end of the motor, and the connection method can adopt the conventional connection method between the vibrating screen and the power output end of the motor.

[0019] Preferably, the second sorting and filtering frame includes an upper frame, a side frame and a bottom surface; in the second sorting and filtering frame, a vibration device is arranged between the bottom of the upper frame and the top of the side frame, and a vibration device is arranged between the bottom of the side frame and the bottom surface.

[0020] In the utility model, the vibration device is driven by a motor to drive the sorting and filtering frame to vibrate up and down, and the driving method can adopt the driving method of the vibration device by a conventional motor.

[0021] Preferably, in the second sorting and filtering frame, the bottom surface is provided with a screen.

[0022] Preferably, a second conical discharge port is provided at the bottom of the metal powder collecting device; inclined plates are arranged at intervals from top to bottom in the metal powder collecting device, and one end of the inclined plates is connected to the inner side wall of the metal powder collecting device.

[0023] In the utility model, by arranging inclined plates at intervals in the metal powder collecting device, the falling speed of the powder can be reduced, so that the battery powder can be more conducive to being electrostatically adsorbed.

[0024] Preferably, the cavity of the battery powder collecting device and the cavity of the metal powder collecting device are arranged adjacent to each other and are connected through an electrostatic adsorption device, and the electrostatic adsorption device is arranged on one side of the upper part of the cavity.

[0025] In the utility model, as the powder in the metal powder collecting device falls, the electrostatic adsorption device can further adsorb the battery powder contained in the falling powder, thereby further separating the battery powder and the metal powder.

[0026] The operation process of the physical sorting device provided by the utility model for sorting the battery pole piece powder after crushing is as follows:

[0027] The battery pole piece powder that has been torn and crushed in sequence is fed into the cyclone separation device from the battery powder feed port, and is sorted by the cyclone separation device. The obtained metal powder is discharged from the metal powder discharge port on one side of the middle part of the side wall of the cyclone separation body, and the obtained battery powder is discharged from the battery powder discharge port at the bottom of the conical separation cylinder;

[0028] The battery powder enters the battery powder vibration sorting device through the battery powder conveying pipeline, enters the first sorting and filtering frame in the battery powder vibration sorting device, is filtered once under the action of the vibration device, and then enters the first vibration screen for secondary filtration, and then enters the battery powder collecting device and is discharged through the first conical discharge port to obtain a battery powder finished product; the screened materials produced by the primary and secondary filtration of the battery powder are all unqualified products, which are sent back to the crusher for crushing again, and then re-enter the physical sorting device for processing;

[0029] The metal powder enters the metal powder vibration sorting device through the metal powder conveying pipeline, enters the second sorting and filtering frame in the metal powder vibration sorting device, is filtered once under the action of the vibration device, and then enters the second vibration screen for secondary filtration, and then enters the metal powder collecting device. The powder is decelerated by the inclined plate arranged in the metal powder collecting device during the falling process, so that the battery powder contained in the falling powder is adsorbed by the electrostatic adsorption device, and the metal powder is finally discharged through the second conical discharge port to obtain a metal powder finished product; the screened materials produced by the metal powder in the primary filtration and the secondary filtration are all unqualified products, which are sent back to the crusher for crushing again, and then re-enter the physical sorting device for processing.

[0030] Compared with the prior art, the beneficial effects of the utility model are:

[0031] The physical sorting device provided by the utility model aims at the problem that the existing crushed battery pole piece powder cannot be finely sorted. By arranging a cyclone separation device, a battery powder vibration sorting device and a metal powder vibration sorting device, the battery powder and metal powder in the crushed battery pole piece powder can be separated. The two separated materials are filtered and sorted for multiple times, which can effectively improve the purity of the battery powder finished product and the metal powder finished product, and improve the recovery rate of the metal material. The sorting accuracy and sorting efficiency are high, the process is simple, and the energy consumption and cost are low. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a schematic diagram of the structure of the physical separation device described in Example 1 of the utility model;

[0033] In the figure: 1-first frame; 2-cyclone separation body; 3-conical separation cylinder; 4-battery powder feed port; 5-metal powder discharge port; 6-battery powder discharge port; 7-battery powder conveying pipeline; 8-metal powder conveying pipeline; 9-first sorting and filtering frame; 10-vibration device; 11-first vibrating screen; 12-electrostatic adsorption device; 13-first conical discharge port; 14-second sorting and filtering frame; 15-second vibrating screen; 16-motor; 17-second conical discharge port; 18-inclined plate; 19-screen; 20-second frame; 21-battery powder collecting device; 22-metal powder collecting device; 23-upper frame; 24-side frame;

[0034] Figure 2 This is a schematic diagram of the operation flow of the physical separation device described in Example 1 of the utility model for separating battery electrode powder after crushing. DETAILED DESCRIPTION

[0035] The technical solution of the utility model is further explained below with reference to the accompanying drawings and through specific implementation methods.

[0036] The utility model is further described in detail below. However, the following examples are only simple examples of the utility model and do not represent or limit the scope of protection of the utility model. The scope of protection of the utility model shall be subject to the claims.

[0037] It should be understood that, in the description of the present utility model, the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0038] It should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "disposed", "connected", and "connected" 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0039] Those skilled in the art should understand that the present invention necessarily includes necessary pipelines, conventional valves and general pump equipment for realizing a complete process, but the above content does not belong to the main invention point of the present invention. Those skilled in the art can add layouts on their own based on the process flow and equipment structure selection, and the present invention does not make special requirements and specific limitations on this.

[0040] Example 1

[0041] This embodiment provides a physical separation device for battery powder, such as Figure 1 As shown, the physical separation device includes a first frame 1 and a cyclone separation device arranged on the first frame 1, and also includes a second frame 20 and a battery powder vibration separation device and a metal powder vibration separation device adjacently arranged on the second frame 20;

[0042] The cyclone separation device comprises a cyclone separation body 2 and a conical separation cylinder 3 connected to the bottom of the cyclone separation body 2, a battery powder feed port 4 is arranged at the top side wall of the cyclone separation body 2, a metal powder discharge port 5 is arranged at one side of the middle part of the side wall, a battery powder discharge port 6 is arranged at the bottom of the conical separation cylinder 3, the metal powder discharge port 5 is connected to the feed port of the metal powder vibration separation device through the metal powder conveying pipeline 8, and the battery powder discharge port 6 is connected to the feed port of the battery powder vibration separation device through the battery powder conveying pipeline 7;

[0043] The battery powder vibration sorting device comprises a first sorting and filtering frame 9, a first vibrating screen 11 and a battery powder collecting device 21 which are sequentially connected from top to bottom. The first sorting and filtering frame 9 comprises an upper frame 23, a side frame 24 and a bottom surface. In the first sorting and filtering frame 9, a vibration device 10 is arranged between the bottom of the upper frame 23 and the top of the side frame 24, a vibration device 10 is arranged between the bottom and the bottom surface of the side frame 24, and the bottom surface is arranged with a screen 19. The bottom of the battery powder collecting device 21 is provided with a first conical discharge port 13;

[0044] The metal powder vibration sorting device comprises a second sorting filter frame 14, a second vibrating screen 15 and a metal powder collecting device 22 which are connected in sequence from top to bottom. The second sorting filter frame 14 comprises an upper frame 23, a side frame 24 and a bottom surface. In the second sorting filter frame 14, a vibration device 10 is arranged between the bottom of the upper frame 23 and the top of the side frame 24, a vibration device 10 is arranged between the bottom and the bottom surface of the side frame 24, and a screen 19 is arranged on the bottom surface. Inclined plates 18 are arranged in the metal powder collecting device 22 from top to bottom. The inclined plates 18 are arranged in intervals from top to bottom. One end of the plate 18 is connected to the inner wall of the metal powder collecting device 22, and a second conical discharge port 17 is provided at the bottom of the metal powder collecting device 22. The cavity of the battery powder collecting device 21 and the cavity of the metal powder collecting device 22 are adjacent to each other and are connected through an electrostatic adsorption device 12. The electrostatic adsorption device 12 is provided on one side of the upper part of the cavity. The first vibrating screen 11 and the second vibrating screen 15 are connected to the power output end of the motor 16, and the connection method can adopt the conventional connection method of the vibrating screen and the power output end of the motor 16.

[0045] The physical separation device provided in this embodiment is used for the operation process of separation of battery pole piece powder after crushing. Figure 2 As shown, the details are as follows:

[0046] The battery pole piece powder that has been torn and crushed in sequence is fed into the cyclone separation device from the battery powder feed port 4, and is sorted by the cyclone separation device. The obtained metal powder is discharged from the metal powder discharge port 5 on one side of the middle part of the side wall of the cyclone separation body 2, and the obtained battery powder is discharged from the battery powder discharge port 6 at the bottom of the conical separation cylinder 3;

[0047] The battery powder enters the battery powder vibration sorting device through the battery powder conveying pipeline 7, enters the first sorting and filtering frame 9 in the battery powder vibration sorting device, is filtered once under the action of the vibration device 10, and then enters the first vibration screen 11 for secondary filtration, and then enters the battery powder collecting device 21 and is discharged through the first conical discharge port 13 to obtain a battery powder finished product; the screened materials produced by the battery powder in the primary filtration and the secondary filtration are all unqualified products, which are sent back to the crusher for crushing again, and then re-enter the physical sorting device for processing;

[0048] The metal powder enters the metal powder vibration sorting device through the metal powder conveying pipeline 8, enters the second sorting filter frame 14 in the metal powder vibration sorting device, is filtered once under the action of the vibration device 10, and then enters the second vibration screen 15 for secondary filtration, and then enters the metal powder collecting device 22. During the falling process, the powder is decelerated by the inclined plate 18 provided in the metal powder collecting device 22, so that the battery powder contained in the falling powder is adsorbed by the electrostatic adsorption device 12, and the metal powder is finally discharged through the second conical discharge port 17 to obtain a metal powder finished product; the screened materials produced by the metal powder in the primary filtration and the secondary filtration are all unqualified products, which are sent back to the crusher for crushing again, and then re-enter the physical sorting device for processing.

[0049] In summary, the physical sorting device provided by the utility model is used for fine sorting of crushed battery electrode powder, which can effectively improve the recovery efficiency and sorting accuracy of metal materials.

[0050] The applicant declares that the above is only a specific implementation method of the present utility model, but the protection scope of the present utility model is not limited thereto. The technicians in the relevant technical field should understand that any changes or substitutions that can be easily thought of by the technicians in the relevant technical field within the technical scope disclosed in the present utility model fall within the protection scope and disclosure scope of the present utility model.

Claims

1. A physical separation device for battery powder, characterized in that: The physical separation device comprises a first frame and a cyclone separation device arranged on the first frame, and further comprises a second frame and a battery powder vibration separation device and a metal powder vibration separation device arranged adjacent to each other on the second frame; The cyclone separation device comprises a cyclone separation body and a conical separation cylinder connected to the bottom of the cyclone separation body; a battery powder feed port is arranged at the top side wall of the cyclone separation body, and a metal powder discharge port is arranged at one side of the middle part of the side wall; a battery powder discharge port is arranged at the bottom of the conical separation cylinder; The metal powder discharge port is connected to the feed port of the metal powder vibration sorting device through the metal powder conveying pipeline; the battery powder discharge port is connected to the feed port of the battery powder vibration sorting device through the battery powder conveying pipeline.

2. The physical separation device for battery powder according to claim 1, characterized in that: The battery powder vibration sorting device comprises a first sorting filter frame, a first vibration screen and a battery powder collecting device which are sequentially connected from top to bottom.

3. The physical separation device for battery powder according to claim 2, characterized in that: The first sorting and filtering frame includes an upper frame, a side frame and a bottom surface; In the first sorting and filtering frame, a vibration device is arranged between the bottom of the upper frame and the top of the side frame, and a vibration device is arranged between the bottom and the bottom surface of the side frame.

4. The physical separation device for battery powder according to claim 3, characterized in that: In the first sorting and filtering frame, the bottom surface is provided with a screen.

5. The physical separation device for battery powder according to claim 2, characterized in that: The bottom of the battery powder collecting device is provided with a first conical discharge port.

6. The physical separation device for battery powder according to claim 2, characterized in that: The metal powder vibration sorting device comprises a second sorting filter frame, a second vibration screen and a metal powder collecting device which are sequentially connected from top to bottom.

7. The physical separation device for battery powder according to claim 6, characterized in that: The second sorting and filtering frame includes an upper frame, a side frame and a bottom surface; In the second sorting and filtering frame, a vibration device is arranged between the bottom of the upper frame and the top of the side frame, and a vibration device is arranged between the bottom and the bottom surface of the side frame.

8. The physical separation device for battery powder according to claim 7, characterized in that: In the second sorting and filtering frame, the bottom surface is provided with a screen.

9. The physical separation device for battery powder according to claim 6, characterized in that: A second conical discharge port is provided at the bottom of the metal powder collecting device; Inclined plates are arranged in the metal powder collecting device from top to bottom, and one end of the inclined plates is connected to the inner side wall of the metal powder collecting device.

10. The physical separation device for battery powder according to claim 6, characterized in that: The cavity of the battery powder collecting device and the cavity of the metal powder collecting device are arranged adjacent to each other and are connected through an electrostatic adsorption device, and the electrostatic adsorption device is arranged on one side of the upper part of the cavity.

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