Magnetic substance removing device in precursor

Abstract

The utility model discloses a kind of magnetic material removal devices in front body, including slurry bucket, permanent magnet iron remover and driving part, slurry bucket contains front body slurry, its bottom is first conical structure, the taper tip of first conical structure is equipped with discharge port, discharge port is connected in the first inlet of conveying pump by first conveying pipe;The second inlet of permanent magnet iron remover is connected the first outlet of conveying pump by second conveying pipe, the second outlet of permanent magnet iron remover is connected the top end of slurry bucket by third conveying pipe, permanent magnet iron remover is configured to remove magnetic material in front body slurry;Driving part is connected to the top end of slurry bucket, its output end connects stirring part, stirring part is set in slurry bucket and extends towards bottom, and the end of stirring part extending towards the bottom of slurry bucket is second conical structure.The magnetic material removal device in front body provided by the utility model can provide more uniform front body slurry state for the demagnetization of permanent magnet iron remover, indirectly improve the removal effect of magnetic material.

Description

Technical Field

[0001] This utility model relates to the technical field of precursor material production equipment, and in particular to a device for removing magnetic substances from precursor materials. Background Technology

[0002] Precursor is a key raw material in the preparation of ternary cathode materials. The precursor directly determines the key physicochemical properties of the ternary cathode material prepared from it, thus affecting the core performance of the battery. Because the raw materials used to produce the precursor may contain iron impurities, and corrosion of the production equipment can also result in free iron impurities within the precursor, these iron ions can replace the ions in the ternary cathode material, causing lattice distortion. This can roughen the surface of the ternary cathode material particles, and the iron ions can catalyze the decomposition of the electrolyte under high voltage, releasing gas and causing the battery to bulge, thus affecting the safety of the ternary lithium battery.

[0003] The precursor iron removal device provided in the related technology connects the outlet of the slurry tank to the inlet pipe of the electromagnetic separator, allowing magnetic foreign objects in the slurry to be adsorbed onto the iron core of the battery separator. The adsorbed slurry is then circulated back into the slurry tank for repeated removal of the magnetic foreign objects. However, due to the high specific gravity of the magnetic foreign objects, some of them deposit at the bottom of the slurry tank, resulting in these foreign objects remaining in the tank. Furthermore, the slurry and magnetic foreign objects in the tank are separated, leading to incomplete removal of the magnetic foreign objects, affecting the purity of the precursor and reducing the performance of the ternary lithium battery.

[0004] Therefore, there is an urgent need for a device for removing magnetic materials from precursor cells to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a device for removing magnetic substances from precursors, which can effectively reduce dead zones in stirring, provide better suspension for sedimented and stratified precursor slurries, and ensure that the precursor slurries are fully and uniformly mixed. This provides a more uniform precursor slurry state for demagnetization in permanent magnet separators, indirectly improving the removal effect of magnetic impurities and increasing the purity of the precursor slurry.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] A precursor in vivo magnetic material removal device, comprising:

[0008] The slurry tank contains precursor slurry. The bottom of the slurry tank is a first conical structure, and the tip of the first conical structure is provided with a discharge port. The discharge port is connected to the first inlet of the conveying pump through a first conveying pipe.

[0009] A permanent magnet separator, wherein the second inlet of the permanent magnet separator is connected to the first outlet of the conveying pump through a second conveying pipe, and the second outlet of the permanent magnet separator is connected to the top of the slurry tank through a third conveying pipe, and the permanent magnet separator is configured to remove magnetic substances from the precursor slurry;

[0010] A driving component is connected to the top of the slurry tank. The output end of the driving component is connected to a stirring component. The stirring component is disposed inside the slurry tank and extends toward the bottom of the slurry tank. The end of the stirring component extending toward the bottom of the slurry tank has a second conical structure.

[0011] Preferably, the cone angle of the first conical structure is 15°-60°, and the cone angle of the second conical structure is less than or equal to the cone angle of the first conical structure.

[0012] Preferably, the stirring element includes:

[0013] A connecting part is connected to the output end of the drive unit and extends toward the bottom of the slurry tank;

[0014] A stirring section is connected to one end of the connecting section extending toward the bottom of the slurry tank, and the stirring section is the second conical structure.

[0015] Preferably, the connecting part is a connecting round rod, and the stirring part is a plurality of stirring rods arranged at intervals around the connecting round rod in the circumferential direction.

[0016] Preferably, the inner wall of the bottom of the slurry tank is coated with a low-friction coating.

[0017] Preferably, the precursor in vivo magnetic material removal device further includes:

[0018] An electromagnetic separator is disposed inside the slurry tank. The electromagnetic separator extends toward the bottom of the slurry tank, and one end of the electromagnetic separator extending toward the bottom of the slurry tank and one end of the agitator extending toward the bottom of the slurry tank are spaced apart along the radial direction of the slurry tank.

[0019] Preferably, the precursor body magnetic material removal device further includes a controller, and the electromagnetic separator includes:

[0020] The electromagnetic iron removal body has a double helix structure.

[0021] The starting unit is electrically connected to the electromagnetic iron removal body, and the controller is electrically connected to the starting unit. The controller is used to control the on / off state of the starting unit, thereby controlling the presence or absence of magnetism in the electromagnetic iron removal body.

[0022] Preferably, multiple electromagnetic separators are provided, and the multiple electromagnetic separators are arranged at intervals along the circumferential direction of the slurry tank.

[0023] Preferably, the precursor in vivo magnetic material removal device further includes:

[0024] A water tank containing cleaning fluid;

[0025] A water pump, wherein the water pump is connected to the water tank via a first pipeline;

[0026] The nozzle is connected to the water pump through a second pipeline and is located inside the slurry tank. The nozzle is capable of spraying the cleaning liquid into the slurry tank.

[0027] Preferably, the precursor in vivo magnetic material removal device further includes:

[0028] A waste bin is provided, which is spaced apart from the slurry bin. The waste bin is used to store the magnetic material and the cleaning solution.

[0029] A connecting pipe fitting is provided on the second conveying pipe, and the connecting pipe fitting is also provided with a first port, which is connected to the waste bucket through a waste discharge pipe.

[0030] A first valve is disposed on the second conveying pipe and located between the connecting pipe and the slurry tank;

[0031] The second valve is installed on the waste discharge pipeline.

[0032] The beneficial effects of this utility model are:

[0033] This utility model discloses a device for removing magnetic materials from precursor slurry, including a slurry tank, a permanent magnet separator, and a drive unit. The slurry tank contains precursor slurry, and the bottom of the slurry tank has a first conical structure with a discharge port at the tip of the first conical structure. The discharge port is connected to the first inlet of a conveying pump through a first conveying pipe. The second inlet of the permanent magnet separator is connected to the first outlet of the conveying pump through a second conveying pipe, and the second outlet of the permanent magnet separator is connected to the top of the slurry tank through a third conveying pipe. The permanent magnet separator is configured to remove magnetic materials from the precursor slurry. The drive unit is connected to the top of the slurry tank, and the output end of the drive unit is connected to a stirring element. The stirring element extends toward the bottom of the slurry tank, and the end of the stirring element extending toward the bottom of the slurry tank has a second conical structure.

[0034] The precursor slurry is thoroughly stirred in a slurry tank by a stirring element with a second conical structure. Then, the precursor slurry flows out from the outlet at the bottom of the first conical structure and is pumped into a permanent magnet separator. The permanent magnet separator adsorbs and removes magnetic impurities from the precursor slurry. The purified precursor slurry is returned to the slurry tank through a third conveying pipe, and this process is repeated until the magnetic content in the slurry drops to the required value. The magnetic material removal device in the precursor slurry provided by this invention effectively reduces dead zones in the stirring by utilizing the bottom of the first conical structure and the stirring element with a second conical structure. This results in better suspension of the settled and stratified precursor slurry, ensuring thorough and uniform mixing. This provides a more uniform precursor slurry state for demagnetization in the permanent magnet separator, indirectly improving the removal efficiency of magnetic impurities and increasing the purity of the precursor slurry. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the precursor in vivo magnetic material removal device according to an embodiment of the present invention;

[0036] Figure 2 This is a first schematic diagram of the stirring component described in an embodiment of the present invention;

[0037] Figure 3 This is a second schematic diagram of the stirring component described in an embodiment of the present invention.

[0038] In the picture:

[0039] 1. Slurry tank; 11. First conical structure;

[0040] 2. Transfer pump;

[0041] 3. Permanent magnet separator;

[0042] 4. Agitator; 41. Connecting part; 42. Agitator;

[0043] 5. Electromagnetic iron separator;

[0044] 6. First conveying pipe;

[0045] 7. Second delivery pipe;

[0046] 8. Third delivery pipe;

[0047] 9. Base. Detailed Implementation

[0048] 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 parts or parts having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0049] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0050] In the description of this utility model, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0051] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0052] This embodiment provides a device for removing magnetic materials from a precursor cell, such as... Figure 1 As shown, the device for removing magnetic materials from the precursor body includes a slurry tank 1, a permanent magnet separator 3, and a drive unit. The slurry tank 1 contains precursor slurry. The bottom of the slurry tank 1 is a first conical structure 11, and the tip of the first conical structure 11 is provided with a discharge port. The discharge port is connected to the first inlet of the conveying pump 2 through a first conveying pipe 6. The second inlet of the permanent magnet separator 3 is connected to the first outlet of the conveying pump 2 through a second conveying pipe 7. The second outlet of the permanent magnet separator 3 is connected to the top of the slurry tank 1 through a third conveying pipe 8. The permanent magnet separator 3 is configured to remove magnetic materials from the precursor slurry. The drive unit is connected to the top of the slurry tank 1. The output end of the drive unit is connected to a stirring element 4. The stirring element 4 is disposed inside the slurry tank 1 and extends toward the bottom of the slurry tank 1. The end of the stirring element 4 extending toward the bottom of the slurry tank 1 is a second conical structure.

[0053] The precursor slurry is thoroughly stirred in the slurry tank 1 by the agitator 4 of the second conical structure. Then, the precursor slurry flows out from the outlet at the bottom of the first conical structure 11 and is pumped into the permanent magnet separator 3 by the transfer pump 2. The permanent magnet separator 3 adsorbs and removes magnetic impurities from the precursor slurry. The purified slurry is returned to the slurry tank 1 through the third transfer pipe 8, and this process is repeated until the content of magnetic material in the precursor slurry drops to the required value. The bottom of the slurry tank 1 of the first conical structure 11 and the agitator 4 of the second conical structure effectively reduce dead zones in the stirring, resulting in better suspension of the settled and stratified precursor slurry. This ensures thorough and uniform mixing of the precursor slurry, providing a more uniform precursor slurry state for demagnetization by the permanent magnet separator 3, indirectly improving the removal effect of magnetic impurities and increasing the purity of the precursor slurry. It should be noted that the magnetic material is iron. Specifically, in this embodiment, the transfer pump 2 is a diaphragm pump, which can control the flow rate of the precursor slurry. In other embodiments, the delivery pump 2 may be a variable frequency centrifugal pump, etc. No limitation is made here.

[0054] Specifically, in this embodiment, the driving component is a motor. In other embodiments, the driving component is a rotary cylinder or a rotary hydraulic cylinder, etc. No limitation is made here.

[0055] Specifically, in this embodiment, the output end of the drive component is fixedly connected to the stirring component 4 via a coupling. In other embodiments, the output end of the drive component is connected to the stirring component 4 via a gear set, or the output end of the drive component is connected to the stirring component 4 via a sprocket and chain structure; no limitation is made here.

[0056] Optionally, the cone angle of the first conical structure 11 is 15°-60°, and the cone angle of the second conical structure is less than or equal to the cone angle of the first conical structure 11. With this configuration, the presence of the first conical structure 11 ensures that the magnetic material deposited at the bottom of the slurry tank 1 flows along the first conical structure 11 towards the discharge port, preventing the accumulation of magnetic material. Simultaneously, the cone angle of the second conical structure is less than or equal to the cone angle of the first conical structure 11, ensuring that the agitator 4 does not interfere with the first conical structure 11 when agitating the precursor slurry, thus guaranteeing the reliability of the agitator 4.

[0057] Specifically, in this embodiment, the cone angle of the first conical structure 11 is 15°, 20°, 25°, 30°, 35°, 40°, 45°, 50°, 55°, or 60°, etc. No limitation is made here.

[0058] Specifically, in this embodiment, the cone angle of the second conical structure is equal to the cone angle of the first conical structure 11. This ensures good structural matching and allows for the formation of an almost equal-width annular gap between the stirring element 4 and the first conical structure 11, reducing the dead angle of stirring. In other embodiments, the cone angle of the second conical structure is smaller than the cone angle of the first conical structure 11. No limitation is imposed here.

[0059] Optionally, such as Figure 1 As shown, the magnetic material removal device in the precursor body also includes an electromagnetic separator 5. The electromagnetic separator 5 is disposed inside the slurry tank 1, extending towards the bottom of the slurry tank 1. The end of the electromagnetic separator 5 extending towards the bottom of the slurry tank 1 and the end of the agitator 4 extending towards the bottom of the slurry tank 1 are spaced apart along the radial direction of the slurry tank 1. By installing the electromagnetic separator 5 inside the slurry tank 1, it can work in conjunction with the permanent magnet separator 3 to remove magnetic materials from the precursor slurry, further reducing the content of magnetic materials in the precursor slurry. This helps improve the iron removal efficiency and effect of the magnetic material removal device in the precursor body, better meeting the stringent requirements for magnetic material content in the precursor slurry.

[0060] Specifically, such as Figure 1 As shown, multiple electromagnetic separators 5 are provided, and the multiple electromagnetic separators 5 are arranged at intervals along the circumferential direction of the slurry tank 1. This arrangement enables omnidirectional removal of magnetic materials from the precursor slurry. More specifically, in this embodiment, two electromagnetic separators 5 are provided. In other embodiments, three or four electromagnetic separators 5 are provided, etc. No limitation is made here.

[0061] Specifically, the magnetic material removal device in the precursor body also includes a controller. The electromagnetic separator 5 includes an electromagnetic separator body and a starting unit. The electromagnetic separator body has a double helix structure. The starting unit is electrically connected to the electromagnetic separator body, and the controller is electrically connected to the starting unit. The controller is used to control the on / off state of the starting unit, thereby controlling the presence or absence of magnetism in the electromagnetic separator body.

[0062] When the controller activates the start-up unit, the electromagnetic iron remover body generates magnetism, attracting iron from the precursor slurry. When the iron is fully attracted and there is no precursor slurry in slurry tank 1, the controller deactivates the start-up unit, causing the electromagnetic iron remover body to lose its magnetism. This allows the iron on the electromagnetic iron remover body to be discharged from the outlet. Furthermore, the double-helix structure of the electromagnetic iron remover body increases the contact area with the iron in the precursor slurry, enabling it to attract more iron and further improving the iron removal efficiency and load capacity of the magnetic material removal device in the precursor. It should be noted that the controller in this embodiment is an existing structure; any existing controller can be used, and details will not be elaborated here.

[0063] Specifically, such as Figure 1As shown, in this embodiment, the magnetic material removal device in the precursor body also includes a base 9, which is connected to the bottom of the slurry tank 1, and the bottom of the slurry tank 1 is housed within the base 9. The base 9 enhances the stability of the magnetic material removal device in the precursor body, facilitates the installation and positioning of the slurry tank 1, and helps collect the magnetic material discharged from the slurry tank 1.

[0064] Specifically, in this embodiment, the base 9 is a support structure. In other embodiments, the base 9 is a box-type structure, etc. No limitations are imposed here.

[0065] Optionally, such as Figure 2 As shown, the agitator 4 includes a connecting part 41 and a stirring part 42. The connecting part 41 is connected to the output end of the drive unit and extends towards the bottom of the slurry tank 1. The stirring part 42 is connected to the end of the connecting part 41 extending towards the bottom of the slurry tank 1, and the stirring part 42 has a second conical structure. This configuration allows the drive unit to drive the stirring part 42 to rotate within the slurry tank 1 via the connecting part 41. The second conical structure of the stirring part 42 facilitates more thorough mixing of the precursor slurry, especially providing a better mixing effect for the precursor slurry at the bottom of the slurry tank 1. The second conical structure generates a combined axial and radial flow during mixing, which helps improve mixing uniformity.

[0066] Specifically, in this embodiment, two stirring sections 42 are provided, and an annular gap of equal width is formed between the first stirring section 42 and the first conical structure 11. The second stirring section 42 is disposed above the first stirring section 42 at a square interval along the extension of the connecting section 41. In other embodiments, three stirring sections 42 are provided, and the three stirring sections 42 are disposed at a square interval along the extension of the connecting section 41, etc. No limitation is made here.

[0067] Specifically, in this embodiment, the stirring part 42 is welded to the connecting part 41. In other embodiments, the stirring part 42 is plugged into the connecting part 41 or threadedly connected to the connecting part 41, etc. No limitations are imposed here.

[0068] Specifically, such as Figure 2 and Figure 3 As shown, in this embodiment, the connecting part 41 is a connecting round rod, and the stirring part 42 consists of multiple stirring rods arranged at intervals around the connecting round rod in the circumferential direction. The design of multiple stirring rods increases the contact area between the stirring rods and the precursor slurry, improving stirring efficiency. In other embodiments, the stirring part 42 consists of multiple stirring plates arranged at intervals around the connecting round rod in the circumferential direction, and the stirring plates are set at an angle to the stirring direction, resulting in smoother stirring and lower energy consumption for the same stirring effect.

[0069] More specifically, such as Figure 3As shown, in this embodiment, the stirring section 42 consists of six stirring rods arranged at intervals around the connecting rod in the circumferential direction. In other embodiments, the stirring section 42 may consist of four stirring rods arranged at intervals around the connecting rod in the circumferential direction, or eight stirring rods arranged at intervals around the connecting rod in the circumferential direction, etc. No limitation is imposed here.

[0070] Optionally, the inner wall of the bottom of the slurry tank 1 is coated with a low-friction coating. The low-friction coating makes the interior of the bottom of the slurry tank 1 smoother, facilitating the removal of magnetic materials. Specifically, in this embodiment, the low-friction coating is a polytetrafluoroethylene (PTFE) coating. In other embodiments, the low-friction coating is a diamond-like carbon (DLC) coating or a tungsten disulfide (TDC) coating, etc. No limitation is made here.

[0071] Optionally, the magnetic material removal device within the precursor body further includes a water tank, a water pump, and a nozzle. The water tank stores cleaning fluid, the water pump is connected to the water tank via a first pipeline, and the nozzle is connected to the water pump via a second pipeline. The nozzle is positioned inside the slurry tank 1 and can spray cleaning fluid into the slurry tank 1. When there is no precursor slurry in the slurry tank 1 and the electromagnetic iron removal body loses its magnetic force, the iron on the electromagnetic iron removal body falls to the bottom of the slurry tank 1. At this time, the water pump pumps the cleaning fluid from the water tank into the nozzle, and then the nozzle sprays the cleaning fluid into the slurry tank 1 to rinse away the residual slurry and iron in the slurry tank 1, preventing residual contamination.

[0072] Specifically, in this embodiment, the cleaning solution is water. In other embodiments, the cleaning solution is deionized water, etc. No limitations are imposed.

[0073] Optionally, the magnetic material removal device in the precursor body also includes a waste tank, a connecting pipe, a first valve, and a second valve. The waste tank and the slurry tank 1 are spaced apart. The waste tank is used to store magnetic materials and cleaning fluid. The connecting pipe is installed on the second conveying pipe 7 and has a first opening. The first opening is connected to the waste tank through a waste discharge pipe. The first valve is installed on the second conveying pipe 7 and is located between the connecting pipe and the slurry tank 1. The second valve is installed on the waste discharge pipe.

[0074] When the precursor slurry is demagnetized in circulation, the first valve is opened and the second valve is closed. The precursor slurry enters the conveying pump 2 through the first conveying pipe 6 and then enters the second conveying pipe 7. After the permanent magnet separator 3 removes the magnetic material, it enters the slurry tank 1 through the third conveying pipe 8. When there is no precursor slurry in the slurry tank 1 and the nozzle sprays the cleaning liquid into the slurry tank 1, the first valve is closed and the second valve is opened. This allows the slurry or cleaning liquid containing magnetic material to be pumped into the connecting pipe and the waste discharge pipe through the conveying pump 2, and then flow into the waste tank. This facilitates the discharge and centralized storage of the separated magnetic material and cleaning liquid, which is convenient for subsequent processing and maintenance and cleaning of the equipment.

[0075] Specifically, in this embodiment, the delivery pump 2, the drive unit, the water pump, and the starter are all electrically connected to the controller.

[0076] It is worth noting that the magnetic material removal device in the precursor provided in this embodiment is not only applicable to ternary precursors, but also to cobalt tetroxide precursors, etc.

[0077] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A device for removing magnetic substances from precursor cells, characterized in that, include: The slurry tank (1) contains precursor slurry. The bottom of the slurry tank (1) is a first conical structure (11), and the tip of the first conical structure (11) is provided with a discharge port. The discharge port is connected to the first inlet of the conveying pump (2) through a first conveying pipe (6). The permanent magnet separator (3) has its second inlet connected to the first outlet of the conveying pump (2) via a second conveying pipe (7), and its second outlet connected to the top of the slurry tank (1) via a third conveying pipe (8). The permanent magnet separator (3) is configured to remove magnetic substances from the precursor slurry. A driving component is connected to the top of the slurry tank (1). The output end of the driving component is connected to a stirring component (4). The stirring component (4) is disposed inside the slurry tank (1) and extends toward the bottom of the slurry tank (1). The end of the stirring component (4) extending toward the bottom of the slurry tank (1) is a second conical structure.

2. The precursor in vivo magnetic material removal device according to claim 1, characterized in that, The cone angle of the first cone structure (11) is 15°-60°, and the cone angle of the second cone structure is less than or equal to the cone angle of the first cone structure (11).

3. The precursor in vivo magnetic material removal device according to claim 1, characterized in that, The stirring component (4) includes: A connecting part (41) is connected to the output end of the drive member, and the connecting part (41) extends toward the bottom of the slurry tank (1); The stirring part (42) is connected to one end of the connecting part (41) extending toward the bottom of the slurry tank (1), and the stirring part (42) is the second conical structure.

4. The precursor in vivo magnetic material removal device according to claim 3, characterized in that, The connecting part (41) is a connecting round rod, and the stirring part (42) is a plurality of stirring rods arranged at intervals around the connecting round rod in the circumferential direction.

5. The precursor in vivo magnetic material removal device according to any one of claims 1-4, characterized in that, The inner wall of the bottom of the slurry tank (1) is coated with a low-friction coating.

6. The precursor in vivo magnetic material removal device according to any one of claims 1-4, characterized in that, The precursor in vivo magnetic material removal device further includes: An electromagnetic separator (5) is disposed inside the slurry tank (1). The electromagnetic separator (5) extends toward the bottom of the slurry tank (1), and one end of the electromagnetic separator (5) extending toward the bottom of the slurry tank (1) and one end of the agitator (4) extending toward the bottom of the slurry tank (1) are spaced apart along the radial direction of the slurry tank (1).

7. The precursor in vivo magnetic material removal device according to claim 6, characterized in that, The precursor body magnetic material removal device further includes a controller, and the electromagnetic iron separator (5) includes: The electromagnetic iron removal body has a double helix structure. The starting unit is electrically connected to the electromagnetic iron removal body, and the controller is electrically connected to the starting unit. The controller is used to control the on / off state of the starting unit, thereby controlling the presence or absence of magnetism in the electromagnetic iron removal body.

8. The precursor in vivo magnetic material removal device according to claim 6, characterized in that, Multiple electromagnetic separators (5) are provided, and the multiple electromagnetic separators (5) are arranged at intervals along the circumferential direction of the slurry tank (1).

9. The precursor bulk magnetic material removal device according to any one of claims 1-4, characterized in that, The precursor in vivo magnetic material removal device further includes: A water tank containing cleaning fluid; A water pump, wherein the water pump is connected to the water tank via a first pipeline; The nozzle is connected to the water pump through a second pipeline and is located inside the slurry tank (1). The nozzle is capable of spraying the cleaning liquid into the slurry tank (1).

10. The precursor bulk magnetic material removal device according to claim 9, characterized in that, The precursor in vivo magnetic material removal device further includes: Waste bin, which is spaced apart from slurry bin (1), is used to store the magnetic material and the cleaning liquid; A connecting pipe fitting is provided on the second conveying pipe (7), and the connecting pipe fitting is also provided with a first port, which is connected to the waste bucket through a waste discharge pipe. The first valve is disposed on the second conveying pipe (7) and located between the connecting pipe and the slurry tank (1); The second valve is installed on the waste discharge pipeline.

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