Iron removal equipment for battery material production by wet method

Abstract

The utility model discloses a battery material production is with wet method iron -removal equipment, including de -ironer, feed assembly, discharge assembly, magnetic discharge subassembly, gas supply subassembly, water supply subassembly and exhaust component. The de -ironer is equipped with the magnetic medium network, and the magnetic medium network can pass electromagnetization to the slurry demagnetization. The feed assembly includes raw material jar, feed part and back material part, and the feed part is used for transporting the slurry of raw material jar to the de -ironer. The discharge assembly is used for discharging the slurry in the de -ironer. The magnetic discharge subassembly includes magnetic material jar and magnetic discharge part. The gas supply subassembly is used for the de -ironer inner chamber gas supply. The gas of gas supply subassembly can scour the magnetic medium network, or the slurry in the de -ironer is transported to the raw material jar through back material part. The water supply subassembly is used for the de -ironer inner chamber water supply. The water of water supply subassembly can carry the magnetic substance in the de -ironer and enter the magnetic material jar through the magnetic discharge part, or carry the slurry in the de -ironer and transport to the raw material jar through back material part.

Description

Technical Field

[0001] This utility model relates to the field of new energy battery technology, and in particular to a wet iron removal device for battery material production. Background Technology

[0002] In the battery material preparation process, strictly controlling the introduction of magnetic foreign matter has become a key step in improving product quality and directly affects the safety of the final battery. Materials with high magnetic foreign matter content, if used in battery manufacturing, can easily cause problems such as battery swelling, abnormal heating, and even separator puncture. In severe cases, this can lead to safety accidents such as battery pack fires, combustion, or explosions. Currently, traditional iron removal processes typically use rinsing water to clean the highly magnetic material adhering to the magnetic mesh inside the iron remover. However, this method is difficult to completely remove the residue adsorbed on the magnetic mesh, and it consumes a large amount of water, resulting in high subsequent processing costs for the large amount of highly magnetic material produced. Utility Model Content

[0003] This invention aims to at least partially solve one of the technical problems in related technologies. To this end, this invention proposes a wet iron removal device for battery material production.

[0004] This utility model embodiment provides a wet iron removal device for battery material production, the wet iron removal device for battery material production includes:

[0005] Iron separator, wherein the iron separator is provided with a magnetic mesh, the magnetic mesh being able to be electromagnetized to demagnetize the slurry;

[0006] The feeding assembly includes a raw material tank, a feeding component, and a return component, wherein the feeding component is used to transport the slurry from the raw material tank into the iron separator;

[0007] A discharge assembly is used to discharge the slurry inside the iron separator;

[0008] The magnetic removal assembly includes a magnetic material container and magnetic removal components;

[0009] An air supply assembly is used to supply air to the inner cavity of the iron separator. The air from the air supply assembly can flush the magnetic mesh or transport the slurry located in the iron separator to the raw material tank through the return material component.

[0010] A water supply assembly is used to supply water to the inner cavity of the iron separator. The water in the water supply assembly can carry the magnetic material in the iron separator into the magnetic material tank through the magnetic discharge component, or carry the slurry in the iron separator to the raw material tank through the return material component.

[0011] The exhaust assembly has its air inlet end connected to the inner cavity of the iron remover.

[0012] According to some embodiments of the present invention, the bottom of the iron separator is provided with a first inlet and outlet communicating with the inner cavity of the iron separator, the top of the iron separator is provided with a second inlet and outlet communicating with the inner cavity of the iron separator, the feeding component and the magnetic discharge component are both connected to the first inlet and outlet, and the discharge component, the water supply component and the exhaust component are all connected to the second inlet and outlet.

[0013] According to some embodiments of the present invention, the feeding component includes a feeding pipe, a feeding valve, and a feeding pump. The feeding end of the feeding pipe is connected to the raw material tank, and the discharging end of the feeding pipe is connected to the first inlet and outlet. The feeding valve and the feeding pump are both located on the feeding pipe.

[0014] According to some embodiments of the present invention, the return material component includes a return material pipe and a return material valve. The inlet end of the return material pipe is connected to the first inlet and outlet, the outlet end of the return material pipe is connected to the raw material tank, the return material valve is provided on the return material pipe, and the air supply component can transport the raw material located in the inner cavity of the iron remover to the raw material tank through the return material pipe.

[0015] According to some embodiments of the present invention, the discharge assembly includes a discharge pipe, a discharge valve, and a discharge pump. The inlet end of the discharge pipe is connected to the second inlet and outlet, and the discharge valve and the discharge pump are both located on the discharge pipe.

[0016] According to some embodiments of the present invention, the magnetic discharge component includes a magnetic discharge tube and a magnetic discharge valve. The feed end of the magnetic discharge tube is connected to the first inlet and outlet, the discharge end of the magnetic discharge tube is connected to the magnetic material tank, and the magnetic discharge valve is located on the magnetic discharge tube.

[0017] According to some embodiments of the present invention, the gas supply assembly includes a gas supply pipe and a gas supply valve. The outlet end of the gas supply pipe is inserted into the inner cavity of the iron remover, the inlet end of the gas supply pipe is connected to a gas source, and the gas supply valve is located on the gas supply pipe.

[0018] According to some embodiments of this utility model, the outlet end of the air supply pipe is located below the magnetic mesh.

[0019] According to some embodiments of the present invention, the water supply assembly includes a water supply pipe and a water supply valve, the outlet end of the water supply pipe is connected to the second inlet and outlet, and the water supply valve is located on the water supply pipe.

[0020] According to some embodiments of the present invention, the exhaust assembly includes an exhaust pipe and an exhaust valve. The inlet end of the exhaust pipe is connected to the second inlet / outlet, the outlet end of the exhaust pipe is connected to the magnetic material tank, and the exhaust valve is located on the exhaust pipe.

[0021] The wet iron removal equipment for battery material production according to the embodiments of this utility model has at least the following technical effects:

[0022] 1. During demagnetization, the magnetic mesh is energized, and the feeding component transports the slurry located in the raw material tank to the iron separator. The slurry passes through the magnetic mesh, which adsorbs the magnetic substances in the slurry. The demagnetized slurry is then discharged from the iron separator through the discharge component.

[0023] 2. The remaining slurry in the iron separator needs to be removed. The air supply component supplies air to the inner cavity of the iron separator. The gas uses air pressure to transport the slurry in the inner cavity of the iron separator back to the raw material tank through the return material component. At this time, a small amount of raw material is still left on the magnetic mesh and the inner wall of the iron separator. Turn off the air supply component and supply water to the iron separator. The water can wash the magnetic mesh and the inner wall of the iron separator, thereby removing the slurry. Then turn the air supply component back on. The gas uses air pressure to transport the water carrying the slurry back to the raw material tank through the return material component.

[0024] 3. When it is necessary to clean the magnetic material inside the iron separator, after the magnetic mesh is de-energized and demagnetized, the water supply component supplies water to the inner cavity of the iron separator. At the same time, the exhaust component is opened to vent the gas inside the iron separator, so that the inside of the iron separator is filled with water. The water supply component is closed, and the air supply component is opened. The air supply component supplies air to the inner cavity of the iron separator. The gas comes into contact with the water and generates bubbles. As the bubbles rise, they cause the water to surge, thereby washing the magnetic mesh and causing the magnetic material attached to the magnetic mesh to detach from the magnetic mesh. The gas is then discharged through the exhaust component. The magnetic removal component is opened, and the water carrying the magnetic material inside the iron separator is transported to the magnetic material tank under the action of air pressure.

[0025] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0026] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0027] Figure 1 This is a schematic diagram of the structure of a wet iron removal device for battery material production according to some embodiments of this utility model;

[0028] Figure 2 This is a schematic diagram of the structure of a wet iron removal device for battery material production according to some embodiments of this utility model from another angle;

[0029] Figure 3 This is a structural schematic diagram of the demagnetization process in some embodiments of this utility model;

[0030] Figure 4This is a structural schematic diagram of the residual material washing process in some embodiments of this utility model;

[0031] Figure 5 This is a structural schematic diagram of the magnetic removal and cleaning process in some embodiments of this utility model.

[0032] Icon labels:

[0033] Iron separator 100; magnetic mesh 110; first inlet / outlet 121; second inlet / outlet 122; medium box 130; first four-way valve 140; second four-way valve 150;

[0034] Feeding assembly 200; raw material tank 210; feeding component 220; feeding pipe 221; feeding valve 222; feeding pump 223; return component 230; return pipe 231; return valve 232;

[0035] Discharge assembly 300; discharge pipe 310; discharge valve 320; discharge pump 330;

[0036] Magnetic removal assembly 400; magnetic material tank 410; magnetic removal component 420; magnetic removal tube 421; magnetic removal valve 422;

[0037] Gas supply assembly 500; gas supply pipe 510; gas supply valve 520;

[0038] Water supply components 600; water supply pipe 610; water supply valve 620;

[0039] Exhaust assembly 700; exhaust pipe 710; exhaust valve 720. Detailed Implementation

[0040] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0041] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are 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.

[0042] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0043] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0044] The embodiments of this utility model will be further described below with reference to the accompanying drawings.

[0045] This invention aims to solve a series of problems in existing wet demagnetization processes for battery materials, such as insufficient cleaning, high water consumption, excessive high-magnetic slurry production, high processing costs, and the introduction of cleaning water during residual material discharge, which reduces the solid content of raw materials. By optimizing the equipment structure and process flow, a more efficient, economical, and environmentally friendly wet electromagnetic separator 100 for battery material production is provided.

[0046] According to some embodiments of this utility model, refer to Figures 1 to 5The wet iron removal equipment for battery material production includes an iron separator 100, a feeding assembly 200, a discharging assembly 300, a magnetic removal assembly 400, an air supply assembly 500, a water supply assembly 600, and an exhaust assembly 700. The iron separator 100 contains a magnetic mesh 110, which can be magnetized to demagnetize the slurry. The magnetic mesh 110 is demagnetized when the power is turned off. This magnetic mesh 110 is typically made of materials such as magnetically conductive stainless steel and has a complex mesh structure to generate a high-gradient magnetic field. The feeding assembly 200 includes a raw material tank 210, a feeding component 220, and a return component 230. The feeding component 220 transports the slurry from the raw material tank 210 into the iron separator 100. The discharging assembly 300 discharges the slurry from the iron separator 100. The magnetic removal assembly 400 includes a magnetic material tank 410 and a magnetic removal component 420. The air supply assembly 500 supplies air to the interior of the magnetic separator 100. The air used is typically clean compressed air, and its pressure and flow rate can be adjusted according to process requirements. The air from the air supply assembly 500 can flush the magnetic mesh 110 or transport the slurry within the magnetic separator 100 to the raw material tank 210 via the return material component 230. Using gas pressure instead of water helps reduce the introduction of liquid media. The water supply assembly 600 supplies water to the interior of the magnetic separator 100. The water used is typically pure water or deionized water to avoid introducing new impurities into the material. The water from the water supply assembly 600 can carry magnetic materials within the magnetic separator 100 into the magnetic material tank 410 via the magnetic removal component 420, or carry the slurry within the magnetic separator 100 to the raw material tank 210 via the return material component 230. The air inlet of the exhaust assembly 700 is connected to the interior of the magnetic separator 100.

[0047] This invention is not only applicable to new energy lithium-ion battery material slurries, such as one or more mixtures of ternary lithium nickel cobalt manganese oxide, lithium nickel cobalt aluminum oxide, lithium iron phosphate, lithium-rich manganese-based, and lithium cobalt oxide, but also applicable to the demagnetization and purification processes of slurries or solutions in other fields such as fine chemicals, food, and medicine where there are strict requirements for controlling magnetic foreign matter. It has good versatility and scalability.

[0048] The workflow of this embodiment includes three processes: demagnetization, residual material removal and rinsing, and demagnetization cleaning. These three processes are started sequentially. Precise timing control through PLC and other controllers ensures that each step is effectively executed, thereby improving the stability and consistency of the overall production.

[0049] Reference Figure 3 During demagnetization, the magnetic mesh 110 is energized to generate a strong magnetic field. The feeding component 220 transports the slurry located in the raw material tank 210 to the iron separator 100. The slurry passes through the magnetic mesh 110, which adsorbs the magnetic substances in the slurry. These magnetic substances are captured and attached to the surface of the magnetic mesh 110 under the action of a high gradient magnetic field. The demagnetized slurry is discharged from the iron separator 100 through the discharge component 300.

[0050] Reference Figure 4 During the residual material washing process, the remaining slurry inside the iron separator 100 needs to be removed. The air supply component 500 supplies air to the inner cavity of the iron separator 100, and the air pressure uses the gas to transport the slurry inside the iron separator 100 back to the raw material tank 210 through the return material component 230. Using compressed air as the driving medium, compared with the traditional method of using pure water for rinsing and recycling, avoids a large amount of cleaning water entering the raw material tank 210, thus helping to maintain the stability of the solid content of the raw material slurry. At this time, a small amount of raw material still remains on the inner wall of the magnetic mesh 110 and the iron separator 100. The air supply component 500 is turned off, and the water supply component 600 supplies water to the iron separator 100. The water can wash the inner wall of the magnetic mesh 110 and the iron separator 100, thereby removing the slurry. The washing here is different from the traditional rinsing. Its characteristic is that a smaller amount of cleaning water is used. The purpose is to wet and peel off the valuable materials adhering to the inner wall of the equipment and the surface of the magnetic mesh 110, rather than to completely rinse them clean. To maximize the recovery of valuable materials with minimal water consumption and reduce material loss, the gas supply component 500 is reopened, and the gas, under pressure, transports the water carrying the slurry back to the raw material tank 210 through the return component 230.

[0051] Reference Figure 5During the demagnetization cleaning process, the magnetic materials inside the magnetic separator 100 need to be cleaned. After the magnetic mesh 110 is de-energized and demagnetized, the magnetic foreign objects that were previously attracted by the strong magnet lose their binding force and are easily washed off by the water flow. The water supply component 600 supplies water to the inner cavity of the magnetic separator 100, while the exhaust component 700 is opened to vent the gas inside the magnetic separator 100, filling the interior of the magnetic separator 100 with water. The opening of the exhaust component 700 provides a gas discharge channel for the injected cleaning water, preventing overflow caused by increased internal pressure and ensuring a smooth and safe water injection process. Then, the water supply component 600 is closed, and the air supply component 500 is opened, supplying air to the inner cavity of the magnetic separator 100. The gas comes into contact with the water and generates bubbles. As the bubbles rise, they cause the water to surge, thereby washing the magnetic mesh 110 and causing the magnetic materials attached to the magnetic mesh 110 to detach from it. Gas is released at the bottom of the chamber, forming a large number of upward-moving bubbles. As the bubbles rise, they strongly agitate and churn the water, creating a dynamic, multidirectional, non-laminar fluid impact force. This bubble-driven water flow effectively washes away the complex mesh structure of the magnetic mesh 110, helping to remove magnetic particles that are adsorbed or adhered to dead corners of the mesh. The gas is then discharged through the exhaust assembly 700, and the magnetic removal assembly 400 is opened. Water carrying magnetic materials in the iron separator 100 is transported to the magnetic material tank 410 under air pressure. After the bubble washing is complete, the residual air pressure in the iron separator 100 chamber or the re-introduced air pressure efficiently discharges the cleaning water containing a high concentration of magnetic foreign matter into the designated magnetic material tank 410. The water supply component 600 is turned on again, and the water supply component 600 rinses the magnetic mesh 110. The water is transported to the magnetic material tank 410 through the magnetic discharge component 400, thereby completely removing the small amount of magnetic impurities remaining in the cavity of the iron remover 100.

[0052] According to some embodiments of this utility model, refer to Figures 3 to 5 The bottom of the magnetic separator 100 is provided with a first inlet and outlet 121 communicating with the inner cavity of the magnetic separator 100, and the top of the magnetic separator 100 is provided with a second inlet and outlet 122 communicating with the inner cavity of the magnetic separator 100. The feeding component 220 and the magnetic removal component 400 are both connected to the first inlet and outlet 121, and the discharge component 300, the water supply component 600 and the exhaust component 700 are all connected to the second inlet and outlet 122. This optimizes the structure and pipeline, avoids the need to open multiple openings on the magnetic separator 100 to connect multiple components or parts, makes the layout of the external pipeline more compact and regular, reduces potential leakage points, and facilitates installation and maintenance.

[0053] According to some embodiments of this utility model, refer to Figures 3 to 5The feeding component 220 includes a feeding pipe 221, a feeding valve 222, and a feeding pump 223. The feeding end of the feeding pipe 221 is connected to the raw material tank 210, and the discharging end of the feeding pipe 221 is connected to the first inlet and outlet 121. The feeding valve 222 and the feeding pump 223 are both located on the feeding pipe 221.

[0054] During demagnetization, the feed pump 223 is started and the feed valve 222 is opened. The feed pump 223 pumps the raw material in the raw material tank 210 into the iron separator 100 through the feed pipe 221 and the first inlet and outlet 121. When the feeding is completed, the feed valve 222 is closed and the feed pump 223 is stopped.

[0055] According to some embodiments of this utility model, refer to Figures 3 to 5 The return component 230 includes a return pipe 231 and a return valve 232. The inlet end of the return pipe 231 is connected to the first inlet / outlet 121, and the outlet end of the return pipe 231 is connected to the raw material tank 210. The return valve 232 is located on the return pipe 231. The air supply component 500 can transport the raw material located in the inner cavity of the iron remover 100 to the raw material tank 210 through the return pipe 231.

[0056] During the residual material washing process, the return valve 232 is opened, and the air supply assembly 500 supplies air to the inner cavity of the iron separator 100. The gas uses air pressure to transport the slurry in the inner cavity of the iron separator 100 back to the raw material tank 210 through the first inlet / outlet 121 and the return pipe 231. At this time, a small amount of raw material remains on the inner wall of the magnetic mesh 110 and the iron separator 100. The air supply assembly 500 and the return valve 232 are then closed. The water supply assembly 600 supplies water to the iron separator 100. The water can wash the inner wall of the magnetic mesh 110 and the iron separator 100, thereby removing the slurry. The air supply assembly 500 and the return valve 232 are then reopened, and the gas uses air pressure to transport the water carrying the slurry back to the raw material tank 210 through the first inlet / outlet 121 and the return pipe 231.

[0057] Preferably, a pump body is installed on the return pipe 231. The pump body can pump the slurry and water located in the iron remover 100 to the raw material tank 210, avoiding insufficient air pressure provided by the air supply component 500. Adding a pump body as an auxiliary or alternative conveying means provides the system with greater adaptability. When dealing with slurries with high viscosity and poor fluidity, or in situations where the pipeline is long and there is a large pressure drop, relying solely on air pressure may not be sufficient to complete the conveying efficiently. In such cases, starting the pump body can provide a stable and strong mechanical thrust, ensuring that the material can flow back to the raw material tank 210 smoothly and quickly, thereby improving the reliability and efficiency of the entire process.

[0058] According to some embodiments of this utility model, refer to Figures 3 to 5The discharge assembly 300 includes a discharge pipe 310, a discharge valve 320 and a discharge pump 330. The inlet end of the discharge pipe 310 is connected to the second inlet / outlet 122. The discharge valve 320 and the discharge pump 330 are both located in the discharge pipe 310.

[0059] During demagnetization, the raw material in the raw material tank 210 is pumped into the iron separator 100 through the feed pipe 221 and the first inlet / outlet 121. The magnetic mesh 110 is energized, and the slurry passes through the magnetic mesh 110. The magnetic mesh 110 adsorbs the magnetic substances in the slurry. The discharge pump 330 is started, and the discharge pump 330 pumps the demagnetized slurry in the iron separator 100 out of the iron separator 100 through the second inlet / outlet 122 and the discharge pipe 310, and transports it to the next station.

[0060] According to some embodiments of this utility model, refer to Figures 3 to 5 The magnetic discharge component 420 includes a magnetic discharge tube 421 and a magnetic discharge valve 422. The feed end of the magnetic discharge tube 421 is connected to the first inlet / outlet 121, and the discharge end of the magnetic discharge tube 421 is connected to the magnetic material tank 410. The magnetic discharge valve 422 is located on the magnetic discharge tube 421.

[0061] During the demagnetization cleaning process, the magnetic material inside the magnetic separator 100 needs to be cleaned. After the magnetic mesh 110 is de-energized and demagnetized, the water supply component 600 supplies water to the inner cavity of the magnetic separator 100. At the same time, the exhaust component 700 is opened to vent the gas inside the magnetic separator 100, filling it with water. The water supply component 600 is then closed, and the air supply component 500 is opened to supply air to the inner cavity of the magnetic separator 100. The gas comes into contact with the water and generates bubbles. As the bubbles rise, they cause the water to surge, thus flushing the magnetic mesh 110 and causing the magnetic material attached to the magnetic mesh 110 to detach. The gas is then discharged through the exhaust component 700. The magnetic discharge valve 422 is opened, and the water carrying the magnetic material inside the magnetic separator 100 is transported to the magnetic material tank 410 under the action of air pressure through the magnetic discharge pipe 421.

[0062] Preferably, the magnetic stripe 421 is equipped with a pump body. The pump body can pump the water and magnetic materials carried by the water in the iron remover 100 into the magnetic material tank 410 through the magnetic stripe 421, avoiding insufficient air pressure provided by the air supply assembly 500. Adding a pump body can enhance the magnetic stripe removal power, especially when dealing with magnetic impurities that settle quickly and are prone to clogging. The pump's suction effect can ensure the unobstructed magnetic stripe removal channel, making the magnetic stripe removal process more thorough.

[0063] According to some embodiments of this utility model, refer to Figures 3 to 5The air supply assembly 500 includes an air supply pipe 510 and an air supply valve 520. The outlet end of the air supply pipe 510 is inserted into the inner cavity of the iron separator 100, and the inlet end of the air supply pipe 510 is connected to an air source. The air supply valve 520 is located on the air supply pipe 510. When air needs to be supplied to the iron separator 100, the air supply valve 520 is opened, and gas enters the iron separator 100 through the air supply pipe 510.

[0064] Preferably, the air supply pipe 510 is connected from the top of the magnetic separator 100 and extends along the inner wall or center to the bottom of the inner cavity of the magnetic separator 100, with its air outlet located below the magnetic mesh 110. Placing the air outlet at the bottom ensures that the air bubbles generated during magnetic cleaning can pass through the entire magnetic mesh 110 from bottom to top, maximizing the scouring coverage and effect. When the air supply valve 520 is closed, the residual air pressure in the air supply pipe 510 can effectively prevent slurry or water from flowing back into the air supply valve 520 due to pressure fluctuations within the equipment, forming a physical isolation. This helps reduce the contamination and failure rate of the air supply valve 520 and significantly extends its service life.

[0065] According to some embodiments of this utility model, refer to Figures 3 to 5 The outlet of the air supply pipe 510 is located below the magnetic mesh 110. During the demagnetization cleaning, when the gas enters the water-filled iron separator 100 through the air supply pipe 510, because the outlet of the air supply pipe 510 is located below the magnetic mesh 110, the gas comes into contact with the water and generates bubbles. As the bubbles rise, they cause the water to surge, thereby washing the magnetic mesh 110 and causing the magnetic material attached to the magnetic mesh 110 to detach from the magnetic mesh 110.

[0066] According to some embodiments of this utility model, refer to Figures 3 to 5 The water supply assembly 600 includes a water supply pipe 610 and a water supply valve 620. The outlet end of the water supply pipe 610 is connected to the second inlet / outlet 122, and the water supply valve 620 is located on the water supply pipe 610. When water needs to be supplied to the iron separator 100, the water supply valve 620 is opened, and water enters the iron separator 100 through the water supply pipe 610.

[0067] According to some embodiments of this utility model, refer to Figures 3 to 5 The exhaust assembly 700 includes an exhaust pipe 710 and an exhaust valve 720. The air inlet end of the exhaust pipe 710 is connected to the second inlet / outlet 122, and the air outlet end of the exhaust pipe 710 is connected to the magnetic material tank 410. The exhaust valve 720 is located on the exhaust pipe 710.

[0068] During the magnetic stripping and cleaning process, the air supply assembly 500 supplies air to the inner cavity of the magnetic separator 100. The gas comes into contact with water and generates bubbles. As the bubbles rise, they cause the water to churn, thus scouring the magnetic mesh 110. At this time, the air pressure inside the magnetic separator 100 increases, and the exhaust valve 720 is opened, allowing the gas to be discharged through the exhaust pipe 710. The gas, carrying moisture and a small amount of magnetic material, enters the magnetic material tank 410 through the second inlet / outlet 122 and the exhaust pipe 710. The remaining water and magnetic material are transported to the magnetic material tank 410 by the magnetic stripping assembly 400 under air pressure. When bubble churning cleaning or compressed air discharge is performed, the gas discharged from the magnetic separator 100 is not directly released into the atmosphere but is guided to the magnetic material tank 410. This prevents any fine slurry or water mist that may be carried in the gas from contaminating the production environment. By connecting the exhaust gas to the high magnetic material collection path, the equipment piping layout is simplified, and all waste materials that may contain magnetic foreign objects are collected in a unified manner into the magnetic material tank 410, which helps with closed-loop management of materials and subsequent centralized processing.

[0069] The valve opening time in each of the above processes is controlled by setting the corresponding time through the PLC controller timer. The timer setting duration is related to the specifications of the iron separator 100 and the characteristics of the material. The specific timer setting is adjusted according to the actual operating conditions.

[0070] Preferred, refer to Figure 2 and Figure 3 The magnetic mesh 110 is encapsulated within a removable media box 130. The outer peripheral wall of the magnetic mesh 110 is attached to the inner peripheral wall of the media box 130. The media box 130 is placed at the center of the inner cavity of the iron separator 100. The lower port of the media box 130 is connected to the first inlet / outlet 121, and the upper port of the media box 130 is connected to the second inlet / outlet 122. The outlet end of the air supply pipe 510 is inserted into the iron separator 100 and into the inner cavity of the media box 130, with the outlet end of the air supply pipe 510 located below the magnetic mesh 110.

[0071] The media box 130 is fixed inside the magnetic separator 100 by a snap-fit ​​or flange structure, facilitating daily maintenance and replacement. To enable the magnetization of the magnetic mesh 110, an excitation coil is provided around the outside of the cavity section of the magnetic separator 100 that houses the magnetic mesh 110. This excitation coil is electrically connected to an external DC power supply via a wire, and the on / off state of this DC power supply is precisely controlled by a PLC controller.

[0072] When demagnetization is required, the PLC controller instructs the DC power supply to power the excitation coil, generating a strong DC magnetic field. This magnetic field penetrates the non-magnetic housing of the separator 100 and acts on the magnetic mesh 110 inside the cavity, instantly magnetizing it and generating a high-gradient magnetic field. Two O-rings are provided between the outer edge of the media box 130 and the inner wall of the separator 100, located at the upper and lower ends of the media box 130, respectively, inside the separator 100. These O-rings ensure a leak-free fit between the media box 130 and the inner wall of the separator 100, preventing slurry from entering between them. The slurry enters from the first inlet / outlet 121 at the bottom, and is guided entirely into the media box 130, completely passing through the mesh structure of the magnetic mesh 110 until it flows out from the second inlet / outlet 122 at the top, ensuring the slurry completely passes through the magnetic mesh 110. The inner cavity of the media box 130 is sealed when all valves are closed.

[0073] Because the medium box 130 has strong sealing performance, when the residual material is discharged for washing, the return valve 232 is opened and the air supply component 500 supplies air to the inner cavity of the iron separator 100. The gas uses air pressure to transport the slurry in the inner cavity of the iron separator 100 back to the raw material tank 210 through the first inlet and outlet 121 and the return pipe 231.

[0074] Because the medium box 130 has strong sealing, when the air pressure inside the medium box 130 increases during magnetic removal and cleaning, the gas is discharged through the exhaust assembly 700. The magnetic removal valve 422 is opened, and the water carrying magnetic substances in the iron remover 100 is transported to the magnetic material tank 410 through the magnetic removal pipe 421 under the action of air pressure.

[0075] Reference Figures 1 to 3 Preferably, the magnetic discharge pipe 421, the return pipe 231, the feed pipe 221, and the first inlet / outlet 121 are interconnected via a first four-way valve 140. The exhaust pipe 710, the water supply pipe 610, the discharge pipe 310, and the second inlet / outlet 122 are interconnected via a second four-way valve 150.

[0076] The workflow of this embodiment includes:

[0077] The PLC controller issues a start command, first energizing the magnetic mesh 110 inside the iron separator 100 to instantly generate a high-intensity gradient magnetic field. Simultaneously, the PLC controller opens the feed valve 222 connected to the first inlet / outlet 121 at the bottom of the iron separator 100, and the discharge valve 320 connected to the second inlet / outlet 122 at the top. Then, the feed pump 223 and discharge pump 330 start. Driven by the feed pump 223, the battery material slurry in the raw material tank 210 enters the first inlet / outlet 121 at the bottom of the iron separator 100 via the feed pipe 221, flowing upwards through the fully magnetized magnetic mesh 110. During this process, magnetic impurity particles such as iron and nickel in the slurry are captured and firmly adsorbed onto the surface of the magnetic mesh 110 by its strong magnetic force. The qualified slurry, after demagnetization and purification, continues to rise, flowing out from the second inlet / outlet 122 at the top, and is stably transported to the next production station via the discharge pipe 310 under the action of the discharge pump 330. This phase will continue until a preset batch of slurry is processed or the set running time is reached.

[0078] After the demagnetization operation is completed, the PLC controller first stops the operation of the feed pump 223 and the discharge pump 330, and closes the feed valve 222 and the discharge valve 320. To maximize the recovery of valuable slurry remaining in the cavity, the controller opens the return valve 232 connected to the first inlet / outlet 121 and briefly opens the air supply valve 520 of the air supply assembly 500. Clean compressed air enters through the air supply pipe 510, which is connected from the top and extends to the bottom of the cavity, pressurizing the interior of the magnetic separator 100. This pressure pushes most of the remaining slurry in the cavity back to the raw material tank 210 through the first inlet / outlet 121 and the return pipe 231. This step uses gas instead of traditional water rinsing, effectively avoiding the problem of a decrease in the solid content of the slurry in the raw material tank 210 due to the introduction of cleaning water. During this process, if the slurry viscosity is high or the pipeline resistance is large, the PLC can selectively start the pump body set on the return pipe 231 to assist or replace air pressure with mechanical force to ensure the efficiency and thoroughness of the evacuation process.

[0079] After most of the residual material is discharged, the air supply valve 520 and the return valve 232 are closed. At this time, a small amount of slurry still adheres to the inner wall of the magnetic mesh 110 and the iron separator 100. The PLC will briefly open the water supply valve 620 connected to the second inlet / outlet 122 to inject a small amount of pure water. The purpose of this water is not to forcefully flush, but to "wet" the inner wall and the magnetic mesh 110, so that the material adhering to its surface is wetted and peeled off. Subsequently, the water supply valve 620 is closed, and the return valve 232 and the air supply valve 522 are opened again. Compressed air pushes this washing water carrying valuable material back to the raw material tank 210 through the return pipe 231. Since the amount of washing water is extremely small, its impact on the overall solid content of the slurry in the raw material tank 210 can be controlled within a very small range allowed by the process, thereby minimizing material loss.

[0080] Before entering the cleaning stage, the PLC controller issues a command to de-energize and demagnetize the magnetic mesh 110, causing its magnetic force to disappear. Subsequently, the controller opens the top water supply valve 620 and exhaust valve 720. Pure water is injected into the magnetic separator 100 through the second inlet / outlet 122, while air inside the chamber is discharged through the exhaust pipe 710. The exhaust pipe 710's outlet is connected to the magnetic material tank 410, avoiding the risk of overflow due to internal pressure buildup caused by rapid water injection, and simultaneously guiding the discharged gas into a collection system to prevent potential dust contamination of the environment. The water supply valve 620 automatically closes once the magnetic separator 100 chamber is completely filled with water.

[0081] After the magnetic separator 100 is filled with water, the exhaust valve 720 remains open, and the PLC controller opens the air supply valve 520. Compressed air is released from the air outlet of the air supply pipe 510 located below the magnetic mesh 110, forming a large number of dense and continuously rising bubbles in the water. As these bubbles rise, they violently agitate the water in the chamber, forming a dynamic, multidirectional, and turbulent flow that powerfully washes over every corner of the magnetic mesh 110. The mechanical impact force generated by this gas-liquid two-phase flow can efficiently remove magnetic foreign objects that have lost their magnetic attraction from the complex structure of the magnetic mesh 110 and suspend them in the water. Excess gas generated during the washing process is continuously discharged through the exhaust assembly 700.

[0082] After a preset time of bubble flushing, the air supply valve 520 is closed. The PLC controller then opens the magnetic discharge valve 422 located at the bottom. Utilizing the residual air pressure in the chamber, or by briefly opening the air supply valve 520 again for pressurization, the cleaning water carrying high-concentration magnetic impurities is quickly discharged through the magnetic discharge pipe 421 into the designated magnetic material tank 410 for collection. For magnetic impurities with strong settling properties or high concentrations, to prevent pipe blockage, the PLC can activate the pump on the magnetic discharge pipe 421 to forcefully discharge the high-magnetic-material slurry through active suction, ensuring a smooth and unobstructed magnetic discharge process. This cleaning method significantly improves cleaning efficiency, thereby reducing total water consumption, directly reducing the total amount of high-magnetic-material slurry produced, and alleviating the cost and pressure of subsequent processing. The PLC can control the system to repeat the water filling and draining rinsing process once or multiple times. That is, close the magnetic discharge valve 422, reopen the water supply valve 620 to fill with clean water, and then open the magnetic discharge valve 422 to drain the rinsing water. After rinsing is completed, all valves are closed, and the entire workflow ends. The equipment returns to its initial standby state, ready to execute the next fully automatic demagnetization-cleaning cycle.

[0083] In this specification, the reference to the term "some embodiments" means that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0084] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A wet iron removal device for battery material production, characterized in that, include: Iron separator (100), wherein the iron separator (100) is provided with a magnetic mesh (110), the magnetic mesh (110) being energized to demagnetize the slurry; The feeding assembly (200) includes a raw material tank (210), a feeding component (220), and a return component (230), wherein the feeding component (220) is used to transport the slurry from the raw material tank (210) into the iron separator (100); A discharge assembly (300) is used to discharge the slurry inside the iron separator (100); The magnetic removal assembly (400) includes a magnetic material container (410) and a magnetic removal component (420); An air supply assembly (500) is used to supply air to the inner cavity of the iron separator (100). The air from the air supply assembly (500) can flush the magnetic mesh (110) or transport the slurry located in the iron separator (100) to the raw material tank (210) through the return material component (230). A water supply assembly (600) is used to supply water to the inner cavity of the iron separator (100). The water in the water supply assembly (600) can carry the magnetic material in the iron separator (100) into the magnetic material tank (410) through the magnetic discharge component (420), or carry the slurry in the iron separator (100) to the raw material tank (210) through the return material component (230). The exhaust assembly (700) has its air inlet end connected to the inner cavity of the iron remover (100).

2. The wet iron removal equipment for battery material production according to claim 1, characterized in that, The bottom of the iron separator (100) is provided with a first inlet and outlet (121) communicating with the inner cavity of the iron separator (100), and the top of the iron separator (100) is provided with a second inlet and outlet (122) communicating with the inner cavity of the iron separator (100). The feeding component (220) and the magnetic discharge component (400) are both connected to the first inlet and outlet (121), and the discharge component (300), the water supply component (600) and the exhaust component (700) are all connected to the second inlet and outlet (122).

3. The wet iron removal equipment for battery material production according to claim 2, characterized in that, The feeding component (220) includes a feeding pipe (221), a feeding valve (222), and a feeding pump (223). The feeding end of the feeding pipe (221) is connected to the raw material tank (210), and the discharging end of the feeding pipe (221) is connected to the first inlet and outlet (121). The feeding valve (222) and the feeding pump (223) are both located on the feeding pipe (221).

4. The wet iron removal equipment for battery material production according to claim 3, characterized in that, The return material component (230) includes a return material pipe (231) and a return material valve (232). The inlet end of the return material pipe (231) is connected to the first inlet / outlet (121), and the outlet end of the return material pipe (231) is connected to the raw material tank (210). The return material valve (232) is located on the return material pipe (231). The air supply component (500) can transport the raw material located in the inner cavity of the iron remover (100) to the raw material tank (210) through the return material pipe (231).

5. The wet iron removal equipment for battery material production according to claim 2, characterized in that, The discharge assembly (300) includes a discharge pipe (310), a discharge valve (320), and a discharge pump (330). The inlet end of the discharge pipe (310) is connected to the second inlet / outlet (122). The discharge valve (320) and the discharge pump (330) are both located in the discharge pipe (310).

6. The wet iron removal equipment for battery material production according to claim 2, characterized in that, The magnetic discharge component (420) includes a magnetic discharge tube (421) and a magnetic discharge valve (422). The feed end of the magnetic discharge tube (421) is connected to the first inlet / outlet (121), and the discharge end of the magnetic discharge tube (421) is connected to the magnetic material tank (410). The magnetic discharge valve (422) is located on the magnetic discharge tube (421).

7. The wet iron removal equipment for battery material production according to claim 1, characterized in that, The gas supply assembly (500) includes a gas supply pipe (510) and a gas supply valve (520). The outlet end of the gas supply pipe (510) is inserted into the inner cavity of the iron remover (100), the inlet end of the gas supply pipe (510) is connected to a gas source, and the gas supply valve (520) is located on the gas supply pipe (510).

8. The wet iron removal equipment for battery material production according to claim 7, characterized in that, The outlet of the air supply pipe (510) is located below the magnetic mesh (110).

9. The wet iron removal equipment for battery material production according to claim 2, characterized in that, The water supply assembly (600) includes a water supply pipe (610) and a water supply valve (620). The outlet end of the water supply pipe (610) is connected to the second inlet and outlet (122), and the water supply valve (620) is located on the water supply pipe (610).

10. The wet iron removal equipment for battery material production according to claim 2, characterized in that, The exhaust assembly (700) includes an exhaust pipe (710) and an exhaust valve (720). The inlet end of the exhaust pipe (710) is connected to the second inlet / outlet (122), and the outlet end of the exhaust pipe (710) is connected to the magnetic material tank (410). The exhaust valve (720) is located on the exhaust pipe (710).

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