Diaphragm separation system for miscellaneous aluminum materials

Abstract

The utility model discloses a miscellaneous aluminum material diaphragm separation system which comprises a reaction kettle, ball milling equipment and a screening device, and the reaction kettle is used for reacting aluminum materials and alkali liquor; the ball milling equipment is communicated with the reaction kettle, and the ball milling equipment is used for crushing unreacted aluminum materials and diaphragms in the reaction kettle; and the screening device is connected with the ball milling equipment and is used for screening the aluminum material and the diaphragm. The aluminum and the diaphragm can be recycled separately, and the economic benefits of enterprises are improved.

Description

Technical Field

[0001] This utility model relates to the field of waste battery recycling technology, specifically to a membrane separation system for mixed aluminum materials. Background Technology

[0002] With the continuous advancement and development of new energy technologies, batteries are being used more and more widely in various fields, leading to a gradual increase in battery usage. At the same time, the number of used batteries is also rising year by year. Directly discarding these used batteries not only wastes a large amount of valuable resources but also causes serious environmental pollution. On the one hand, used batteries contain many valuable metal elements, such as lead, nickel, and lithium, which can be recycled and reused, reducing the need for new resources. On the other hand, used batteries also contain some toxic and harmful substances, such as mercury and cadmium. If discarded indiscriminately, these harmful substances may seep into the soil and water, causing long-term damage to the ecological environment. Therefore, effective recycling of used batteries is particularly important. Currently, the common method used in the recycling process is to remove the electrode packs from the battery, crush them, and then sort them.

[0003] Patent CN118336187A discloses a method for separating positive electrode materials and negative electrode materials. The method includes the following steps: removing the electrode pack and electrode sheets from a used battery; cutting the electrode pack and electrode sheets into multiple pieces; immersing the cut electrode pack and electrode sheets in a liquid for ultrasonic treatment, causing the negative electrode material to detach from the copper foil and sink into the liquid, thus separating the negative electrode material from other solid materials, including the copper foil, positive electrode sheet, and separator; removing the other solid materials; detaching the positive electrode material from the aluminum foil; and separating the positive electrode material, copper foil, aluminum foil, and separator.

[0004] However, due to the similar specific gravity of aluminum foil and diaphragm in the above-mentioned existing technologies, some aluminum material and diaphragm are aggregated together during the sorting process, becoming mixed aluminum material, which is not conducive to the recycling of aluminum material and diaphragm. Utility Model Content

[0005] The purpose of this invention is to overcome the above-mentioned technical deficiencies and propose a mixed aluminum material diaphragm separation system to solve the technical problem in the prior art where, due to the similar specific gravity of aluminum foil and diaphragm, some aluminum material and diaphragm aggregate together during the sorting process, becoming mixed aluminum material, which is not conducive to the recycling of aluminum material and diaphragm.

[0006] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution:

[0007] This utility model provides a membrane separation system for mixed aluminum materials, comprising:

[0008] The reaction vessel is used to react aluminum material with alkaline solution;

[0009] A ball milling device, connected to the reaction vessel, is used to pulverize unreacted aluminum material and the diaphragm within the reaction vessel; and

[0010] A screening device is connected to the ball mill equipment and is used to screen aluminum material and diaphragms.

[0011] In some embodiments, the aluminum diaphragm separation system further includes a washing vessel connected to the screening device, the washing device being used to wash the diaphragm.

[0012] In some embodiments, the aluminum diaphragm separation system further includes a second stirring device disposed inside the washing vessel.

[0013] In some embodiments, the aluminum material diaphragm separation system further includes a solid-liquid separation device connected to the washing vessel, which is used to separate the diaphragm and liquid within the washing vessel.

[0014] In some embodiments, the solid-liquid separation device includes a filter press.

[0015] In some embodiments, the aluminum material diaphragm separation system further includes a drying device connected to the solid-liquid separation device, the drying device being used to dry the diaphragm.

[0016] In some embodiments, the aluminum material diaphragm separation system further includes a first stirring device disposed inside the reaction vessel.

[0017] In some embodiments, the first stirring device includes a rotating shaft, a propeller-type stirring paddle, a dispersion disc-type stirring paddle, and a drive motor. The rotating shaft is rotatably mounted on the reactor along an axis in the vertical direction. The propeller-type stirring paddle and the dispersion disc-type stirring paddle are spaced apart on the rotating shaft in the direction toward the top of the reactor. The propeller-type stirring paddle is used to agitate and mix the material and make it float. The dispersion disc-type stirring paddle is used to tangentially disperse the floated material. The drive motor is connected to the upper end of the rotating shaft.

[0018] In some embodiments, the screening device includes an ultrasonic screening machine.

[0019] In some embodiments, the aluminum material diaphragm separation system further includes a pH detection device, which is located inside the reactor and used to detect the pH value of the material.

[0020] Compared with existing technologies, the aluminum diaphragm separation system provided by this utility model, wherein the reaction vessel, the ball mill, and the screening device are connected in sequence, is used in practice. The aluminum ore is fed into the reaction vessel, followed by the addition of an alkaline solution. The alkaline solution reacts with the aluminum foil but not with the diaphragm, thus initially separating the aluminum foil and the diaphragm. Due to the ductility of the aluminum foil and the clumping that occurs during the discharge crushing process (i.e., the diaphragm wrapping the aluminum foil), the aluminum foil cannot be completely dissolved. Therefore, the material in the reaction vessel can be transported to the ball mill for further grinding and pulverization, exposing the aluminum foil wrapped by the diaphragm and achieving complete separation of the diaphragm and aluminum foil. Finally, the material is transported to the screening device, which separates the diaphragm, aluminum foil, and aluminum solution, thereby achieving separate recovery of aluminum and the diaphragm and improving the economic benefits of the enterprise.

[0021] The above description is merely an overview of the technical solution of this utility model. To better understand the technical means of this utility model and to enable its implementation according to the description, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings. Specific implementation methods of this utility model are given in detail in the following embodiments and their accompanying drawings. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of an embodiment of the aluminum material diaphragm separation system provided by this utility model;

[0023] Figure 2 yes Figure 1 Front view of the reactor.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1-Reaction vessel, 2-Ball milling equipment, 3-Sieving device, 4-Washing vessel, 5-Solid-liquid separation device, 6-First stirring device, 61-Rotating shaft, 62-Propeller stirring paddle, 63-Dispersion disc stirring paddle, 64-Drive motor, 7-Second stirring device. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0027] To address the technical problem in existing technologies where the specific gravity of aluminum foil and diaphragm is similar, causing some aluminum material and diaphragm to aggregate together during the sorting process, thus hindering the recycling of aluminum material and diaphragm, this invention provides a diaphragm separation system for aluminum material, which enables the separate recycling of aluminum and diaphragm, thereby improving the economic benefits for enterprises.

[0028] Please see Figure 1 , Figure 1 This is a schematic diagram of the structure of the aluminum material separation membrane system in one embodiment of the present invention.

[0029] This utility model provides a membrane separation system for mixed aluminum materials, including a reaction vessel 1, a ball mill 2, and a screening device 3. The reaction vessel 1 is used to react aluminum materials with alkaline solution. The ball mill 2 is connected to the reaction vessel 1 and is used to crush the unreacted aluminum materials and membranes in the reaction vessel 1. The screening device 3 is connected to the ball mill 2 and is used to screen the aluminum materials and membranes.

[0030] In this embodiment, the reactor 1, the ball mill 2, and the screening device 3 are connected in sequence. In practical use, scrap aluminum is fed into the reactor 1, followed by the addition of an alkaline solution. The alkaline solution reacts with the aluminum foil but not with the diaphragm, thus initially separating the aluminum foil and the diaphragm. Due to the ductility of the aluminum foil and the clumping that occurs during the discharge crushing process (i.e., the diaphragm wrapping the aluminum foil), the aluminum foil cannot be completely dissolved. Therefore, the material in the reactor 1 can be transported to the ball mill 2 for further grinding and pulverization, exposing the aluminum foil wrapped by the diaphragm and achieving complete separation of the diaphragm and aluminum foil. Finally, the material is transported to the screening device 3, where the diaphragm, aluminum foil, and aluminum solution are separated, thereby achieving separate recovery of aluminum and the diaphragm and improving the company's economic efficiency.

[0031] In one embodiment, the aluminum diaphragm separation system further includes a washing vessel 4, which is connected to the screening device 3, and the washing device is used to wash the diaphragm.

[0032] In this embodiment, since the material passing through the screening device 3 is aluminum foil, aluminum-containing solution, and diaphragm, although the screening device 3 can separate the diaphragm from the aluminum foil and aluminum-containing solution, the surface of the diaphragm is still covered with aluminum-containing solution, which is not conducive to the recovery of the diaphragm. Therefore, a washing tank 4 is also provided after the screening device 3. In specific use, the diaphragm is transported to the washing tank 4, and pure water is introduced into the washing tank 4 to wash the diaphragm, thereby removing the aluminum-containing solution attached to the surface of the diaphragm and improving the quality of the diaphragm.

[0033] In one embodiment, the aluminum diaphragm separation system further includes a second stirring device 7, which is disposed inside the washing tank 4.

[0034] In this embodiment, in order to improve washing efficiency, a second stirring device 7 is also provided in the washing tank 4. The second stirring device 7 includes a stirring shaft, a stirring paddle and a stirring motor. The stirring shaft is rotatably installed in the washing tank 4 along a vertical axis. The stirring shaft is installed at its lower end. The stirring motor is connected to the upper end of the stirring shaft and drives the stirring shaft and the stirring paddle to rotate.

[0035] In one embodiment, the aluminum material diaphragm separation system further includes a solid-liquid separation device 5, which is connected to the washing tank 4 and is used to separate the diaphragm and liquid in the washing tank 4.

[0036] In this embodiment, after the diaphragm is washed, the liquid and the diaphragm need to be separated. Therefore, a solid-liquid separation device 5 is provided after the washing tank 4. The solid-liquid separation device 5 can separate the diaphragm and the liquid. This arrangement is beneficial for the recovery of the diaphragm.

[0037] In one embodiment, the solid-liquid separation device 5 includes a filter press.

[0038] In one embodiment, the aluminum material diaphragm separation system further includes a drying device connected to the solid-liquid separation device 5, which is used to dry the diaphragm.

[0039] In this embodiment, in order to obtain dry membrane material, the membrane separated by the solid-liquid separation device 5 can be transported to the drying device, and the drying device can be used to quickly dry the membrane to improve the recycling efficiency.

[0040] In one embodiment, the aluminum material diaphragm separation system further includes a first stirring device 6, which is disposed inside the reactor 1.

[0041] In one embodiment, the first stirring device 6 includes a rotating shaft 61, a propeller-type stirring paddle 62, a dispersing disc stirring paddle 63, and a drive motor 64. The rotating shaft 61 is rotatably mounted on the reactor 1 along an axis in the vertical direction. The propeller-type stirring paddle 62 and the dispersing disc stirring paddle 63 are spaced apart from the rotating shaft 61 in the direction toward the top of the reactor 1. The propeller-type stirring paddle 62 is used to agitate and mix the materials and make them float. The dispersing disc stirring paddle 63 is used to tangentially disperse the floating materials. The drive motor 64 is connected to the upper end of the rotating shaft 61.

[0042] In this embodiment, the rotating shaft 61 is rotatably mounted on the upper end of the reactor 1 along a vertical axis, such that the upper part of the rotating shaft 61 is located outside the reactor 1, and the lower part of the rotating shaft 61 is located inside the reactor 1. The main shaft of the drive motor 64 is connected to the upper part of the rotating shaft 61. The propeller-type stirring paddle 62 and the dispersion disc stirring paddle 63 are both mounted on the lower part of the rotating shaft 61 and are spaced apart from bottom to top. The propeller-type stirring paddle 62 can agitate the material at the bottom upwards, while the dispersion disc stirring paddle 63 can disperse the floating material circumferentially. The combined use of the propeller-type stirring paddle 62 and the dispersion disc stirring paddle 63 can achieve a better stirring effect, thereby improving the reaction rate.

[0043] In one embodiment, the screening device 3 includes an ultrasonic screening machine.

[0044] It should be noted that the ball mill, ultrasonic sieve, filter press, and drying device are all existing technologies and will not be described in detail here.

[0045] In one embodiment, the aluminum material membrane separation system further includes a pH detection device, which is located inside the reactor 1 to detect the pH value of the material.

[0046] In this embodiment, a pH detection device is also provided in the reactor 1. The pH detection device can detect the pH value of the material in the reactor 1 in real time, so that the operator can understand the dissolution of the aluminum material.

[0047] To better understand this utility model, the following is combined with... Figures 1 to 2 The technical solution of this utility model is described in detail below:

[0048] The reaction vessel 1, the ball mill 2, the ultrasonic sieve, the washing vessel 4, the filter press, and the drying device are connected in sequence. In practical use, the scrap aluminum material is fed into the reaction vessel 1, followed by the addition of an alkaline solution. The alkaline solution reacts with the aluminum foil but not with the diaphragm, thus initially separating the aluminum foil and the diaphragm. Due to the ductility of the aluminum foil and the clumping that occurs during the discharge crushing process (i.e., the diaphragm wrapping the aluminum foil), the aluminum foil cannot be completely dissolved. Therefore, the material in the reaction vessel 1 can be transported to the ball mill 2 for further grinding and pulverization, exposing the aluminum foil wrapped by the diaphragm and achieving separation of the diaphragm and aluminum foil. The material is thoroughly separated and then conveyed to the ultrasonic screening machine. The ultrasonic screening machine separates the diaphragm, aluminum foil, and aluminum solution. The aluminum foil and aluminum solution are discharged from one outlet of the ultrasonic screening machine, while the diaphragm is discharged from the other outlet. The diaphragm is then conveyed to the washing tank 4, and pure water is introduced into the washing tank 4 to wash the diaphragm. After washing, it is conveyed to the filter press to quickly separate the solid diaphragm and liquid. Finally, the solid diaphragm is conveyed to the drying device for drying, thus obtaining the diaphragm solid, aluminum foil, and aluminum solution. This achieves the separate recovery of aluminum and diaphragm, improving the economic benefits of the enterprise.

[0049] The specific embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any other corresponding changes and modifications made based on the technical concept of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. A membrane separation system for mixed aluminum materials, characterized in that, It includes: The reaction vessel is used to react aluminum material with alkaline solution; A ball mill, connected to the reaction vessel, is used to pulverize unreacted aluminum material and the diaphragm within the reaction vessel; and A screening device, connected to the ball mill, is used to screen aluminum material and a diaphragm. The aluminum material diaphragm separation system also includes a washing tank, which is connected to the screening device and is used to wash the diaphragm. The aluminum material diaphragm separation system further includes a second stirring device, which is located inside the washing tank; The aluminum material diaphragm separation system also includes a solid-liquid separation device, which is connected to the washing tank and is used to separate the diaphragm and liquid in the washing tank. The solid-liquid separation device includes a filter press; The aluminum material diaphragm separation system also includes a drying device, which is connected to the solid-liquid separation device and is used to dry the diaphragm.

2. The aluminum material separation system according to claim 1, characterized in that, The aluminum material diaphragm separation system also includes a first stirring device, which is located inside the reaction vessel.

3. The aluminum material separation system according to claim 2, characterized in that, The first stirring device includes a rotating shaft, a propeller-type stirring paddle, a dispersion disc-type stirring paddle, and a drive motor. The rotating shaft is rotatably mounted on the reactor along a vertical axis. The propeller-type stirring paddle and the dispersion disc-type stirring paddle are spaced apart on the rotating shaft in the direction toward the top of the reactor. The propeller-type stirring paddle is used to agitate and mix the materials and make them float. The dispersion disc-type stirring paddle is used to tangentially disperse the floating materials. The drive motor is connected to the upper end of the rotating shaft.

4. The aluminum material separation system according to claim 1, characterized in that, The screening device includes an ultrasonic screening machine.

5. The aluminum material separation system according to claim 1, characterized in that, The aluminum material diaphragm separation system also includes a pH detection device, which is located inside the reactor and used to detect the pH value of the material.

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