Oscillating device for reducing and leaching ternary positive electrode material from sawdust
By designing an oscillating device for the reduction and leaching of ternary cathode materials from wood chips, and utilizing heating and ultrasonic oscillation technologies, the problems of slow reaction speed and high cost of wet recycling equipment were solved, achieving efficient recycling of ternary cathode materials.
Patent Information
- Application Number
- CN202422794616.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-16
- Publication Date
- 2025-11-04
- Estimated Expiration
- 2034-11-16
AI Technical Summary
Existing wet recycling equipment has a slow reaction speed, high cost, and large consumption of reducing agent, making it difficult to efficiently recover ternary cathode materials from lithium-ion batteries.
Design a vibration device including a recycling tank, a heating plate, an ultrasonic oscillator, a temperature sensor, and a controller. The device achieves a rapid reaction between wood chips and sulfuric acid solution through heating and ultrasonic vibration, thereby improving the leaching efficiency of ternary cathode materials.
It achieves efficient leaching of ternary cathode materials, with fast reaction speed, low cost, and convenient operation, making it suitable for industrial promotion.
Smart Images
Figure CN223514036U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of vibration recovery devices, and in particular to a vibration device for the reduction and leaching of ternary cathode materials from wood chips. Background Technology
[0002] With the development of electric vehicles, the use of lithium-ion power batteries is increasing year by year. The lifespan of power batteries is 5-8 years, making the disposal of used batteries a problem that must be solved. Battery recycling is divided into pyrometallurgical recycling, wet recycling, and direct recycling. Pyrometallurgical battery recycling pre-recovers metals by converting metal oxides or phosphates and other compounds into metals through pyrolysis and reduction reactions at high temperatures. While this method allows for large-scale battery recycling, pyrometallurgical recycling has major limitations including high energy consumption, harmful emissions, and the loss of lithium and manganese into slag or exhaust gases. Wet battery recycling technology dissolves cathode powder in the form of strong acids such as sulfuric acid and a reducing agent (hydrogen peroxide). A precipitant is added to the dissolved solution, and the pH is adjusted with an alkaline solution to obtain precipitation. This method has high leaching and precipitation rates, but consumes a large amount of the reducing agent (hydrogen peroxide), which is a potentially explosive chemical, posing challenges for industrial production such as high cost, transportation difficulties, and storage difficulties. Direct recycling involves adding lithium, nickel, cobalt, and manganese elements to the cathode powder through sintering, allowing for reuse. Direct recycling technology can potentially restore 80-90% of the initial capacity of lithium-ion batteries; however, these processes require further refinement to achieve commercial viability. Therefore, wet recycling is currently the most developed and commercially viable battery recycling method.
[0003] Current wet recycling equipment requires injecting a large amount of acidic solution into a mixed solution and then waiting for the metal substances in the solution to react with the acid. This results in a slow overall reaction rate, reducing the practicality of the equipment and increasing recycling costs. Therefore, we propose a shaking device for the reduction leaching of ternary cathode materials from wood chips. Utility Model Content
[0004] The main purpose of this invention is to provide a oscillating device for the reduction and leaching of ternary cathode materials from wood chips, which can effectively solve the problems in the background art.
[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a oscillating device for the reduction and leaching of ternary cathode materials from wood chips, comprising a recycling tank, three sets of support legs fixedly connected to the bottom of the recycling tank, a display screen fixedly installed on the outer wall of the recycling tank, a control module provided on the recycling tank, two first through-holes opened at the top of the recycling tank, a liquid injection channel and a solid injection channel fixedly connected to the two first through-holes respectively, a second through-hole opened at the bottom of the recycling tank, a discharge channel fixedly connected to the second through-hole, a through groove opened on one side of the discharge channel, a cavity opened inside the bottom wall of the recycling tank, a connecting groove opened on one side of the cavity, and a sealing component provided in the cavity.
[0006] As a further description of the above technical solution, the through groove and the connecting groove have the same diameter and are interconnected.
[0007] As a further description of the above technical solution, the control module includes two heating plates, two ultrasonic oscillators, a temperature sensor, and a controller. The two heating plates and two ultrasonic oscillators are alternately and fixedly installed on the inner wall of the recycling tank. The temperature sensor is fixedly installed at the bottom inside the recycling tank, and the controller is fixedly installed at the top outside the recycling tank.
[0008] As a further description of the above technical solution, the controller is externally powered, and the two heating plates, two ultrasonic oscillators, temperature sensor, and display screen are electrically connected to the controller via wires.
[0009] As a further description of the above technical solution, the sealing assembly includes an electromagnetic block, a magnet block is provided on one side of the electromagnetic block, a connecting plate is fixedly connected to the side of the magnet block away from the electromagnetic block, a sealing plate is fixedly connected to the side of the connecting plate away from the magnet block, and three sets of telescopic rods are provided on both the upper and lower sides of the sealing plate, and each telescopic rod is fitted with a spring.
[0010] As a further description of the above technical solution, the electromagnetic block is fixedly installed in the cavity on the side away from the connecting groove. The magnet block matches the cavity and can slide in the cavity. The sealing plate is adapted to both the through groove and the connecting groove. The telescopic rod and the spring are both fixedly connected to the magnet block on one side, and the telescopic rod and the spring are both fixedly connected to the inner wall of the cavity on the other side.
[0011] As a further description of the above technical solution, the electromagnetic block is electrically connected to the controller via a relay.
[0012] Compared with the prior art, the present invention has the following beneficial effects:
[0013] By incorporating a recycling tank, supporting legs, display screen, first through-hole, liquid injection channel, solid injection channel, second through-hole, discharge channel, through-groove, cavity, connecting groove, and sealing components, this device is simple, practical, easy to operate, has low recycling costs, and fast reaction speed. In actual production, it is conducive to large-scale recycling production and is suitable for widespread promotion. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the overall structure of a vibration device for reducing and leaching ternary cathode materials from wood chips according to this utility model;
[0015] Figure 2 This is a cross-sectional view of the overall structure of the oscillation device for reducing and leaching ternary cathode materials from wood chips according to this utility model.
[0016] Figure 3 This is a schematic diagram of the sealing component structure of a vibration device for reducing and leaching ternary cathode materials from wood chips according to this utility model;
[0017] Figure 4 This is a simplified circuit diagram of a partial structure of an oscillating device for reducing and leaching ternary cathode materials from wood chips, according to this utility model.
[0018] In the diagram: 1. Recycling tank; 2. Support leg; 3. Display screen; 4. First through-hole; 5. Liquid injection channel; 6. Solid injection channel; 7. Second through-hole; 8. Discharge channel; 9. Through-groove; 10. Cavity; 11. Connecting groove; 12. Sealing assembly; 21. Heating plate; 22. Ultrasonic oscillator; 23. Temperature sensor; 24. Controller; 121. Electromagnetic block; 122. Magnet block; 123. Connecting plate; 124. Sealing plate; 125. Telescopic rod; 126. Spring. Detailed Implementation
[0019] To make the technical means, creative features, and objectives of this utility model easier to understand, the following describes this utility model in conjunction with specific embodiments.
[0020] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0022] Please see Figure 1-4 This utility model provides a technical solution: a vibration device for the reduction and leaching of ternary cathode materials from wood chips, comprising a recovery tank 1, three sets of support legs 2 fixedly connected to the bottom of the recovery tank 1, a display screen 3 fixedly installed on the outer wall of the recovery tank 1, and a control module on the recovery tank 1. The control module includes two heating plates 21, two ultrasonic oscillators 22, a temperature sensor 23, and a controller 24. The two heating plates 21 and the two ultrasonic oscillators 22 are alternately fixedly installed on the inner wall of the recovery tank 1. The heating plates 21 are silicon carbide heat exchangers, which use heat exchange tubes made of corrosion-resistant silicon carbide, suitable for heating, cooling, and condensing chemically corrosive process media, such as sulfuric acid, nitric acid, and hydrochloric acid. They have excellent corrosion resistance and can withstand the corrosion of strong acids such as sulfuric acid. The temperature sensor 23 is fixedly installed at the bottom of the inside of the recovery tank 1. The temperature sensor 23 is a PT100 sensor, a commonly used temperature sensor with high accuracy and stability. It is usually made of platinum resistance thermometer and is suitable for measuring highly corrosive media with temperatures below 220℃. The PT100 sensor exhibits good corrosion resistance in highly corrosive media such as sulfuric acid and is commonly used for industrial temperature measurement. The controller 24 is fixedly installed on the top of the outside of the recovery tank 1. The controller 24 uses an AT810S51 microcontroller, which is small in size, low in cost, has many I / O pins, high reliability, strong anti-interference ability, and simple programming. The controller 24 is externally powered. The two heating plates 21, two ultrasonic oscillators 22, temperature sensor 23, and display screen 3 are electrically connected to the controller 24 through wires.
[0023] It should be noted that the display screen 3, ultrasonic oscillator 22, temperature sensor 23 and controller 24 are all mature and publicly available technologies. The temperature sensor 23 transmits the detected temperature data to the controller 24 for processing and then outputs the temperature on the display screen 3. The controller 24 can also control the ultrasonic oscillator 22 and the heating plate 21 to work. This technology can be implemented by those skilled in the art through simple programming. Therefore, its specific structure and working principle will not be described in detail here.
[0024] The top of the recycling tank 1 has two first through-holes 4, each with a liquid injection channel 5 and a solid injection channel 6 fixedly connected to it. Sulfuric acid solution can be added to the recycling tank 1 through the liquid injection channel 5, and sawdust (reducing agent) and ternary waste powder can be added through the solid injection channel 6. The sawdust needs to be ball-milled for 12 hours before addition. The bottom of the recycling tank 1 has a second through-hole 7, with a discharge channel 8 fixedly connected to it. It should be noted that when sawdust is used as a reducing agent, under sulfuric acid and heating conditions, the cellulose and hemicellulose in the sawdust hydrolyze into reducing monosaccharides and polysaccharides. Continuous acid hydrolysis will further hydrolyze the polysaccharides to obtain a large amount of reducing monosaccharides. In an acidic environment, the high-valence nickel-cobalt-manganese ions in the cathode powder react with the reducing monosaccharides (polycarbonates with aldehyde groups) to generate low-valence nickel-cobalt-manganese ions (which are more easily dissolved by acid). This sulfuric acid + wood chip reduction system can achieve an extraction rate of over 99.5% for all elements in ternary cathode waste powder. The sulfuric acid + wood chip reduction leaching system can effectively solve the problems of reducing agent transportation and storage. Moreover, wood chips, as a waste by-product of the production process, are inexpensive and readily available, which can greatly reduce the cost of battery recycling and contribute to environmental protection.
[0025] A through groove 9 is provided on one side of the discharge channel 8. A cavity 10 is provided inside the bottom wall of the recovery tank 1. A connecting groove 11 is provided on one side of the cavity 10. The through groove 9 and the connecting groove 11 have the same diameter and are interconnected. A sealing assembly 12 is provided in the cavity 10. The sealing assembly 12 includes an electromagnetic block 121. The electromagnetic block 121 is fixedly installed in the cavity 10 on the side away from the connecting groove 11. A magnet block 122 is provided on one side of the electromagnetic block 121. The magnet block 122 matches the cavity 10 and can slide in the cavity 10. A connecting plate 123 is fixedly connected to the side of the magnet block 122 away from the electromagnetic block 121. A sealing plate 124 is fixedly connected to the side of the connecting plate 123 away from the magnet block 122. The sealing plate 124 is adapted to both the through groove 9 and the connecting groove 11 and can slide in the through groove 9 and the connecting groove 11. The sealing plate 124 has three sets of telescopic rods 125 on both the upper and lower sides. Each telescopic rod 125 is fitted with a spring 126. One side of the telescopic rod 125 and the spring 126 are fixedly connected to the magnet block 122, and the other side of the telescopic rod 125 and the spring 126 are fixedly connected to the inner wall of the cavity 10. It should be noted that the electromagnetic block 121 is electrically connected to the controller 24 through a relay. The controller 24 can control whether the electromagnetic block 121 is energized. When the electromagnetic block 121 is energized, a repulsive magnetic force will be generated between it and the magnet block 122. This repulsive magnetic force is greater than the sum of the elastic forces generated by all the springs 126 under maximum compression.
[0026] It should be noted that this utility model is a vibration device for the reduction and leaching of ternary cathode materials from wood chips. When vibration and recycling are required, 1L of sulfuric acid solution (2mol / L) is first added to the recycling tank 1 through the liquid injection channel 5. Then, 60g of wood chips that have been ball-milled for 12 hours are added to the recycling tank 1 through the solid injection channel 6. The controller 24 controls the heating plate 21 to heat the sulfuric acid. At this time, the temperature sensor 23 will detect the temperature of the sulfuric acid inside the recycling tank 1 in real time, and this temperature will be displayed on the display screen 3 for the staff to observe. When the temperature reaches 80°C, the heating is stopped and the sulfuric acid is kept at 80°C. At the same time, the controller will control the ultrasonic oscillator 22 to work. After ultrasonic vibration for 2 hours, 20g of ternary waste powder is added to the recycling tank 1 through the solid injection channel 6, and ultrasonic vibration is performed for another 1.5 hours, so that the ternary waste powder can be completely dissolved in the solution, thereby reducing and leaching the ternary cathode material. Compared with existing oscillating devices for the reduction and leaching of ternary cathode materials from wood chips, this invention is simple, practical, easy to operate, has low recycling costs, and a fast reaction speed.
[0027] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A vibrating device for reducing and leaching ternary cathode materials from wood chips, comprising a recovery tank (1), characterized in that, The bottom of the recycling tank (1) is fixedly connected to three sets of support legs (2). The outer wall of the recycling tank (1) is fixedly installed with a display screen (3). The recycling tank (1) is equipped with a control module. The top of the recycling tank (1) has two first through-holes (4). The two first through-holes (4) are respectively fixedly connected to a liquid injection channel (5) and a solid injection channel (6). The bottom of the recycling tank (1) has a second through-hole (7). The second through-hole (7) is fixedly connected to a discharge channel (8). The discharge channel (8) has a through groove (9) on one side. The bottom wall of the recycling tank (1) has a cavity (10). The cavity (10) has a connecting groove (11) on one side. The cavity (10) is equipped with a sealing component (12).
2. The oscillating device for the reduction leaching of ternary cathode materials from wood chips according to claim 1, characterized in that, The through groove (9) and the connecting groove (11) have the same diameter and are connected to each other.
3. The oscillating device for reducing and leaching ternary cathode materials from wood chips according to claim 1, characterized in that, The control module includes two heating plates (21), two ultrasonic oscillators (22), a temperature sensor (23), and a controller (24). The two heating plates (21) and the two ultrasonic oscillators (22) are fixedly installed alternately on the inner wall of the recycling tank (1). The temperature sensor (23) is fixedly installed at the bottom inside the recycling tank (1). The controller (24) is fixedly installed at the top outside the recycling tank (1).
4. The oscillating device for reducing and leaching ternary cathode materials from wood chips according to claim 3, characterized in that, The controller (24) is connected to an external power source. The two heating plates (21), two ultrasonic oscillators (22), temperature sensor (23), and display screen (3) are electrically connected to the controller (24) via wires.
5. The oscillating device for reducing and leaching ternary cathode materials from wood chips according to claim 3, characterized in that, The sealing assembly (12) includes an electromagnetic block (121), a magnet block (122) is provided on one side of the electromagnetic block (121), a connecting plate (123) is fixedly connected to the side of the magnet block (122) away from the electromagnetic block (121), a sealing plate (124) is fixedly connected to the side of the connecting plate (123) away from the magnet block (122), and three sets of telescopic rods (125) are provided on both the upper and lower sides of the sealing plate (124), and springs (126) are sleeved on each of the telescopic rods (125).
6. The oscillating device for reducing and leaching ternary cathode materials from wood chips according to claim 5, characterized in that, The electromagnetic block (121) is fixedly installed in the cavity (10) on the side away from the connecting groove (11). The magnet block (122) matches the cavity (10) and can slide in the cavity (10). The sealing plate (124) is adapted to the through groove (9) and the connecting groove (11). The telescopic rod (125) and the spring (126) are both fixedly connected to the magnet block (122) on one side, and the telescopic rod (125) and the spring (126) are both fixedly connected to the inner wall of the cavity (10) on the other side.
7. The oscillating device for reducing and leaching ternary cathode materials from wood chips according to claim 5, characterized in that, The electromagnetic block (121) is electrically connected to the controller (24) via a relay.