Electromagnetic iron remover for lithium iron phosphate

Abstract

The utility model belongs to the technical field of lithium ion battery production, particularly relates to an electromagnetic iron remover for lithium iron phosphate, and aims to solve the problems that an existing iron remover cannot scatter raw materials, ferromagnetic impurities are difficult to be in full contact with a magnetic field, and time and labor are wasted in subsequent impurity cleaning. Comprising a supporting frame, a raw material processing assembly and an impurity auxiliary cleaning assembly, agglomerated lithium iron phosphate materials are strongly impacted and torn through spikes, tightly-gathered material block masses are rapidly scattered, meanwhile, airflow sprayed by three layers of air nozzles at different angles is interwoven and collided, and therefore the material block masses are rapidly scattered. And meanwhile, during subsequent impurity removal, only the power supply of the electromagnet needs to be switched off, so that the impurities are discharged under the cooperation of the vibration motor, and time and labor are saved.

Description

An electromagnetic iron separator for lithium iron phosphate Technical Field

[0001] This utility model relates to an electromagnetic separator, specifically an electromagnetic separator for lithium iron phosphate, belonging to the field of lithium-ion battery production technology. Background Technology

[0002] Lithium iron phosphate is a key raw material for the cathode of lithium-ion batteries, and its purity directly determines the battery's performance and safety. During the production processes such as raw material mixing, grinding, and drying, ferromagnetic impurities such as iron filings and rust are inevitably introduced. These impurities can interfere with the battery's charging and discharging process, causing problems such as self-discharge and shortened cycle life. Therefore, electromagnetic separators are often used to remove ferromagnetic impurities from the raw materials.

[0003] In the prior art, such as the iron separator disclosed in announcement number CN204841925U, there is a main body and a door cover. It uses a magnetic rod. The semi-circular part of the magnetic rod has a strong adsorption force, which makes it difficult for iron to fall off. At the same time, normal materials will not be retained. Therefore, the iron separator can effectively disperse iron and normal materials and has a good impurity removal capability. However, in actual operation, due to the fine particle size and easy agglomeration of lithium iron phosphate material, a large number of ferromagnetic impurities are wrapped inside the agglomerated material particles. When the material is directly introduced into the iron separator, the ferromagnetic impurities have difficulty making full contact with the magnetic field, which makes it impossible for the magnetic field to effectively capture these impurities, greatly reducing the iron removal efficiency. Moreover, when removing impurities, the magnetic rod needs to be removed frequently, which is time-consuming and laborious. Summary of the Invention

[0004] This invention provides an electromagnetic iron separator for lithium iron phosphate to solve the problems that existing iron separators cannot break up raw materials, ferromagnetic impurities have difficulty making full contact with the magnetic field, and subsequent cleaning of impurities is time-consuming and laborious.

[0005] The present invention achieves the above objectives through the following technical solution: an electromagnetic iron separator for lithium iron phosphate, comprising a support frame, a cylinder fixedly connected in the mounting hole opened on the surface of the support frame, multiple sets of electromagnets fixedly connected in a circular array inside the cylinder, and a magnetic shield provided in the through hole opened at the center of the cylinder.

[0006] A raw material processing assembly is provided above the cylinder. The raw material processing assembly includes a first rotating rod, a dispersing rod, spikes, and a dispersing box. The dispersing box is located above the cylinder. The first rotating rod is rotatably connected to the inside of the dispersing box. The dispersing rod is fixedly connected to the surface of the first rotating rod in a circular array. The spikes are fixed to the surface of the dispersing rod in a circular array. A feeding unit is provided on the surface of the dispersing box. An auxiliary blowing unit is provided between the cylinder and the dispersing box.

[0007] The bottom surface of the cylinder is equipped with an impurity auxiliary cleaning component, which includes a fixing ring, a vibrating motor and a discharge pipe. The fixing ring is fixedly sleeved on the surface of the magnetic cover, the vibrating motor is fixedly installed on the bottom surface of the fixing ring, and the discharge pipe is fixedly connected to the bottom surface of the magnetic cover. The discharge pipe has a discharge chamber and an impurity removal chamber respectively.

[0008] As a further embodiment of this utility model: the feeding unit includes a feeding hopper, a feeding box, a support plate, a second rotating rod, a drive motor, and an arc-shaped feeding plate. The feeding box is fixedly connected to the surface of the dispersing box. The support plate is symmetrically fixedly connected between the feeding box and the cylinder. The feeding hopper is fixedly connected to the surface of the feeding box. The second rotating rod is rotatably connected inside the feeding box. The arc-shaped feeding plate is fixedly connected to the surface of the second rotating rod in a circular array. The drive motor is fixedly connected to the surface of the feeding box. One end of the second rotating rod and the output end of the drive motor are coaxially fixedly connected.

[0009] As a further embodiment of this utility model: one end of the first rotating rod and the second rotating rod extend to the outside of the box body respectively, a large pulley is fixedly connected to the end of the second rotating rod, and a small pulley is fixedly connected to the end of the first rotating rod. The large pulley and the small pulley are connected by belt drive.

[0010] As a further embodiment of this utility model: the auxiliary blowing unit includes a hollow ring tube, a jet nozzle, an air supply pipe and a high-pressure air pump. The hollow ring tube is fixedly connected to the bottom surface of the blowing box and the hollow ring tube and the blowing box are connected. The jet nozzle is fixedly connected to the inner wall of the hollow ring tube in a circular array. The high-pressure air pump is fixedly connected to the surface of the support frame through a mounting bracket. The air supply pipe is fixedly connected between the high-pressure air pump and the hollow ring tube.

[0011] As a further embodiment of this utility model: the jet nozzles are arranged in a three-layer ring array along the side wall of the hollow ring tube, with an included angle of 30° between adjacent jet nozzles. The uppermost jet nozzle is inclined downward at 30° to the side wall of the hollow ring tube, the middle jet nozzles are horizontally arranged, and the lower jet nozzles are inclined upward at 30°.

[0012] As a further improvement of this utility model: the interior of the jet nozzle is fixedly connected with a baffle plate in a circular array, and the surface of the baffle plate is curved.

[0013] As a further embodiment of this utility model: a T-shaped rod is symmetrically and fixedly connected to the bottom surface of the fixing ring, and a V-shaped plate is slidably connected to the surface of each T-shaped rod. The V-shaped plate is fixedly connected to the support frame, and a spring is fixedly connected between the fixing ring and the V-shaped plate. The spring is sleeved on the surface of the T-shaped rod.

[0014] As a further improvement of this utility model, a retractable flexible tube is fixedly connected between the magnetic shield and the hollow ring tube.

[0015] As a further embodiment of this utility model: the side wall of the discharge pipe is fixedly connected with a stop block at the position above the discharge chamber and the impurity discharge chamber. The inner wall surface of the discharge pipe is rotatably connected with a third rotating rod. The surface of the third rotating rod is fixedly connected with a baffle. One end of the third rotating rod extends to the outside of the discharge pipe and is fixedly connected to a handwheel located on the outside of the discharge pipe.

[0016] The beneficial effects of this utility model are:

[0017] 1. This utility model, by setting up a first rotating rod, a dispersing rod, spikes, and a dispersing box, allows the processing of lithium iron phosphate material. The raw material enters the dispersing box through a feeding unit, and the first rotating rod drives the dispersing rod to rotate at high speed. The spikes powerfully impact and tear the agglomerated lithium iron phosphate material, rapidly breaking up the tightly packed clumps. During the dispersing process, magnetic impurities originally encased within the agglomerates gradually lose their protection and are exposed, creating conditions for efficient separation of magnetic impurities using subsequent magnetic separation equipment, thus improving the removal rate of magnetic impurities.

[0018] 2. By setting up a feeding unit, this utility model can effectively control the material conveying speed, avoid the accumulation of materials in the dispersing box due to excessive feeding, and also generate a continuous stirring effect on the material when pushing it. This stirring can effectively delay the agglomeration of lithium iron phosphate materials and provide a better material basis for the dispersing process in the dispersing box.

[0019] 3. This utility model, by setting up an auxiliary blowing unit, after the high-pressure air pump is started, compressed air is delivered to the hollow ring pipe through the air supply pipe, and then airflow is sprayed towards the center in a ring array through the jet nozzles on the inner side wall. The airflow forms a uniform air curtain at the junction of the dispersing box and the cylinder, which blows the dispersed lithium iron phosphate material particles away from the agglomerated state and pushes them to fall steadily and dispersedly into the magnetic shield. The ring airflow can disperse the material clumps in all directions, avoiding the material from agglomerating again after being dispersed. Especially for the easy agglomeration characteristic of lithium iron phosphate, it further improves the dispersion uniformity and ensures that the internal magnetic impurities are fully exposed.

[0020] 4. This utility model, by setting up an impurity auxiliary cleaning component, allows for normal material discharge. During normal discharge, rotating the handwheel causes the baffle to fit against the side block of the impurity discharge chamber, closing the chamber and allowing the material to fall from it. When impurity discharge is required, the electromagnet is de-energized, and the handwheel is rotated in the opposite direction, causing the baffle to turn towards the side of the discharge chamber, closing it and allowing residual impurities to be discharged. This method is convenient, time-saving, and labor-saving. Attached Figure Description

[0021] Figure 1 is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 is a schematic diagram of the overall structure of this utility model.

[0023] Figure 3 is a schematic diagram of the overall structure of this utility model.

[0024] Figure 4 is a partial cross-sectional structural diagram of this utility model;

[0025] Figure 5 is a schematic diagram of the connection structure between the dispersing rod and the arc-shaped feeding plate in this utility model;

[0026] Figure 6 is an enlarged structural schematic diagram of point A in Figure 5 of this utility model;

[0027] Figure 7 is a schematic cross-sectional view of the jet nozzle in this utility model.

[0028] Figure 8 is a schematic diagram of the cross-sectional structure of the jet nozzle in this utility model;

[0029] Figure 9 is a cross-sectional structural diagram of the middle cylinder of this utility model;

[0030] Figure 10 is a schematic diagram of the connection structure between the magnetic shield and the discharge pipe of this utility model;

[0031] Figure 11 is a cross-sectional structural diagram of the discharge pipe in this utility model.

[0032] In the diagram: 1. Support frame; 2. Cylinder; 3. Electromagnet; 4. Magnetic guide cover; 5. Feed hopper; 6. Feed box; 7. Support plate; 8. Second rotating rod; 9. Drive motor; 10. Arc-shaped feeding plate; 11. Large pulley; 12. Belt; 13. Small pulley; 14. First rotating rod; 15. Dispersing rod; 16. Spike; 17. Dispersing box; 18. Hollow ring tube; 19. Air nozzle; 20. Baffle plate; 21. Air supply pipe; 22. High-pressure air pump; 23. Fixing ring; 24. V-shaped plate; 25. T-shaped rod; 26. Spring; 27. Telescopic hose; 28. Vibrating motor; 30. Discharge pipe; 3001. Discharge chamber; 3002. Impurity discharge chamber; 3003. Stop block; 3004. Third rotating rod; 3005. Baffle; 3006. Handwheel. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] Example 1

[0035] As shown in Figures 1 to 11, an electromagnetic iron separator for lithium iron phosphate includes a support frame 1. A cylinder 2 is fixedly connected in the mounting hole on the surface of the support frame 1. Multiple sets of electromagnets 3 are fixedly connected in a circular array inside the cylinder 2. A magnetic cover 4 is provided in the through hole at the center of the cylinder 2.

[0036] A raw material processing assembly is installed above the cylinder 2. This assembly includes a first rotating rod 14, a dispersing rod 15, spikes 16, and a dispersing box 17. The dispersing box 17 is positioned above the cylinder 2. The first rotating rod 14 is rotatably connected to the inside of the dispersing box 17. The dispersing rods 15 are fixedly connected to the surface of the first rotating rod 14 in a circular array. The spikes 16 are fixedly fixed to the surface of the dispersing rods 15 in a circular array. A feeding unit is installed on the surface of the dispersing box 17. An auxiliary blowing unit is installed between the cylinder 2 and the dispersing box 17. When processing lithium iron phosphate material, the raw material enters the dispersing box 17 through the feeding unit. The first rotating rod 14 drives the dispersing rods 15 to rotate at high speed. The spikes 16 powerfully impact and tear the agglomerated lithium iron phosphate material, rapidly dispersing the tightly packed material clumps. During the dispersing process, the magnetic impurities originally encased within the agglomerates gradually lose their protection and are exposed, creating conditions for efficient separation of magnetic impurities using magnetic separation equipment, thus improving the removal rate of magnetic impurities.

[0037] The bottom surface of the cylinder 2 is provided with an impurity auxiliary cleaning component, which includes a fixing ring 23, a vibration motor 28 and a discharge pipe 30. The fixing ring 23 is fixedly sleeved on the surface of the magnetic cover 4, the vibration motor 28 is fixedly installed on the bottom surface of the fixing ring 23, and the discharge pipe 30 is fixedly connected to the bottom surface of the magnetic cover 4. The discharge pipe 30 has a discharge chamber 3001 and a waste discharge chamber 3002 respectively, which facilitates the separate discharge of materials and impurities.

[0038] Example 2

[0039] Improvements based on Example 1:

[0040] As shown in Figures 4 and 5, the feeding unit includes a feeding hopper 5, a feeding box 6, a support plate 7, a second rotating rod 8, a drive motor 9, and an arc-shaped feeding plate 10. The feeding box 6 is fixedly connected to the surface of the dispersing box 17. The support plate 7 is symmetrically fixedly connected between the feeding box 6 and the cylinder 2. The feeding hopper 5 is fixedly connected to the surface of the feeding box 6. The second rotating rod 8 is rotatably connected inside the feeding box 6. The arc-shaped feeding plate 10 is fixedly connected to the surface of the rod of the second rotating rod 8 in a circular array. The drive motor 9 is fixedly connected to the surface of the feeding box 6. One end of the second rotating rod 8 and the output end of the drive motor 9 are coaxially fixedly connected. Through the arc-shaped feeding plate 10, not only can the material conveying speed be effectively controlled to avoid material accumulation in the dispersing box 17 due to excessive feeding, but it can also generate a continuous stirring effect on the material when pushing it. This stirring can effectively delay the agglomeration of lithium iron phosphate material and provide a better material basis for the dispersing process in the dispersing box 17.

[0041] As shown in Figure 5, one end of the first rotating rod 14 and the second rotating rod 8 extend to the outside of the box. The end of the second rotating rod 8 is fixedly connected to a large pulley 11, and the end of the first rotating rod 14 is fixedly connected to a small pulley 13. The large pulley 11 and the small pulley 13 are connected by a belt 12. The rotation speed of the small pulley 13 is higher than that of the large pulley 11, which enables the dispersing rod 15 to rotate at a higher speed, thereby enhancing the dispersing effect on lithium iron phosphate material. At the same time, the arc-shaped feeding plate 10 feeds material stably at a relatively low speed, ensuring that the material can enter the dispersing box 17 evenly and continuously, thus achieving the coordinated work of feeding and dispersing.

[0042] Furthermore, the auxiliary blowing unit includes a hollow ring tube 18, nozzles 19, a gas supply pipe 21, and a high-pressure air pump 22. The hollow ring tube 18 is fixedly connected to the bottom surface of the dispersing box 17, and the hollow ring tube 18 and the dispersing box 17 are connected. The nozzles 19 are fixedly connected to the inner wall of the hollow ring tube 18 in a circular array. The high-pressure air pump 22 is fixedly connected to the surface of the support frame 1 through a mounting bracket. The gas supply pipe 21 is fixedly connected between the high-pressure air pump 22 and the hollow ring tube 18, and the gas supply pipe 21 and the hollow ring tube 18 are connected. After the high-pressure air pump 22 is started, compressed air is delivered to the hollow ring tube 18 through the gas supply pipe 21, and then the airflow is injected towards the center in a circular array through the nozzles 19 on the inner wall. The airflow forms a uniform air curtain at the junction of the dispersing box 17 and the cylinder 2, blowing the dispersed lithium iron phosphate material particles away from the agglomerated state, further improving the dispersion uniformity and ensuring that the internal magnetic impurities are fully exposed.

[0043] Furthermore, the nozzles 19 are arranged in a three-layer ring array along the side wall of the hollow ring tube 18, with an included angle of 30° between adjacent nozzles 19. The uppermost nozzle 19 is inclined downward at 30° to the side wall of the hollow ring tube 18, the middle nozzle 19 is horizontally arranged, and the lower nozzle 19 is inclined upward at 30°. The airflows sprayed by the three layers of nozzles 19 at different angles intertwine and collide, forming a complex three-dimensional turbulent flow field in the material conveying channel. During the falling process, the lithium iron phosphate material is continuously impacted and torn by the airflow from the upper, middle, and lower directions, and is dispersed in all directions, ensuring that it can receive sufficient airflow in three-dimensional space, and finally falls into the magnetic shield 4 in a uniformly dispersed state.

[0044] Furthermore, the interior of the nozzle 19 is fixedly connected with a circular array of baffles 20. The surface of the baffles 20 is curved. Compressed air generated by the high-pressure air pump 22 enters the hollow ring pipe 18 through the air delivery pipe 21, and then flows to each nozzle 19. When the airflow passes through the nozzle 19, the baffles 20 cut and guide the airflow. Because the surface of the baffles 20 is curved, when the airflow hits its curved surface, it changes the flow direction and produces a rotation and diffusion effect, dividing the concentrated airflow into multiple fine airflow bundles with a swirling direction. After these turbulent airflows processed by the baffles 20 are ejected from the nozzles 19, they further converge and collide with the airflows ejected from other nozzles 19, forming a more complex and intense turbulent field in the material conveying channel. During the falling process, the lithium iron phosphate material is torn and impacted by these turbulent and multi-angle airflows, and the agglomerated structure is more thoroughly destroyed, entering the magnetic shield 4 in a highly dispersed state.

[0045] As shown in Figure 10, a T-shaped rod 25 is symmetrically and fixedly connected to the bottom surface of the fixed ring 23. A V-shaped plate 24 is slidably connected to the surface of each T-shaped rod 25. The V-shaped plate 24 is fixedly connected to the support frame 1. A spring 26 is fixedly connected between the fixed ring 23 and the V-shaped plate 24. The spring 26 is sleeved on the surface of the T-shaped rod 25. It works with the vibration motor 28 to remove ferrous impurities, making the operation time-saving and labor-saving.

[0046] Furthermore, a retractable flexible hose 27 is fixedly connected between the magnetic shield 4 and the hollow ring tube 18 to ensure that space is provided for the vibration of the magnetic shield 4 during subsequent impurity removal.

[0047] As shown in Figure 11, baffles 3003 are fixedly connected to the side walls of the discharge pipe 30 at positions above the discharge chamber 3001 and the impurity discharge chamber 3002. A third rotating rod 3004 is rotatably connected to the inner wall of the discharge pipe 30. A baffle 3005 is fixedly connected to the surface of the third rotating rod 3004. One end of the third rotating rod 3004 extends to the outside of the discharge pipe 30 and is fixedly connected to a handwheel 3006 located on the outside of the discharge pipe 30. During normal discharge, rotating the handwheel 3006 causes the baffle to... The baffle 3005 fits against the side baffle 3003 of the discharge chamber 3002, sealing the discharge chamber 3002. The material falls from the discharge chamber. When it is necessary to discharge impurities, the handwheel 3006 is turned in the opposite direction, and the baffle 3005 turns to the side of the discharge chamber 3001, sealing the discharge chamber 3001. The residual impurities are discharged from the discharge chamber 3002. The baffle 3003 and the baffle 3005 cooperate to form a physical isolation, so that impurities cannot enter the discharge chamber 3001 during discharge. The material will not be mixed into the impurity channel during discharge, ensuring the purity of the material and the thoroughness of the discharge.

[0048] Working principle: In actual use, lithium iron phosphate material enters the feeding box 6 from the feed hopper 5. The drive motor 9 drives the second rotating rod 8 to rotate, which in turn drives the arc-shaped feeding plate 10 to rotate, pushing the material evenly into the dispersing box 17. At the same time, the large pulley 11 at the end of the second rotating rod 8 drives the small pulley 13 at the end of the first rotating rod 14 to rotate through the belt 12, so that the first rotating rod 14 rotates at a higher speed, which in turn drives the dispersing rod 15 and the spikes 16 to strongly disperse the material, breaking the agglomerated lithium iron phosphate material into fine particles, exposing the magnetic impurities wrapped inside.

[0049] When the dispersed material falls, the auxiliary blowing unit starts to work. Compressed air generated by the high-pressure air pump 22 enters the hollow ring pipe 18 through the air delivery pipe 21, and then is ejected through the jet nozzles 19 arranged in a three-layer ring array. The uppermost jet nozzle 19 is installed at an angle downward at 30°, the middle layer sprays horizontally, and the lower layer is inclined upward at 30°. The baffle 20 inside the jet nozzle 19 cuts and guides the airflow, forming a complex three-dimensional turbulent flow field, which disperses the material in all directions, prevents it from re-aggregating, and pushes the material to fall evenly into the magnetic shield 4.

[0050] During normal discharge, rotating the handwheel 3006 drives the third rotating rod 3004 and the baffle 3005 to rotate, so that they fit against the stop block 3003 above the discharge chamber 3002, closing the discharge chamber 3002. The material is then smoothly discharged from the discharge chamber 3001. When it is necessary to clean ferrous impurities, rotating the handwheel 3006 in the opposite direction closes the discharge chamber 3001 and controls the electromagnet 3 to be de-energized. At the same time, the vibration motor 28 is started. Under the action of vibration, the fixed ring 23 drives the T-shaped rod 25 to slide in the V-shaped plate 24. The spring 26 compresses and stretches, amplifies and buffers the vibration, loosens the impurities, and discharges them from the discharge chamber 3002 of the discharge pipe 30 under the action of gravity. This realizes the whole process operation of material handling, impurity separation and equipment cleaning, saving time and effort.

[0051] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0052] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An electromagnetic iron separator for lithium iron phosphate, comprising a support frame (1), characterized in that: A cylinder (2) is fixedly connected to the mounting holes on the surface of the support frame (1). Multiple sets of electromagnets (3) are fixedly connected in a circular array inside the cylinder (2). A magnetic shield (4) is installed in the through hole at the center of the cylinder (2). A raw material processing assembly is installed above the cylinder (2). The raw material processing assembly includes a first rotating rod (14), a dispersing rod (15), spikes (16), and a dispersing box (17). The dispersing box (17) is located above the cylinder (2). The first rotating rod (14) is rotatably connected inside the dispersing box (17). The dispersing rods (15) are fixedly connected in a circular array to the surface of the first rotating rod (14). The spikes (16) are... A circular array is fixed on the surface of the dispersing rod (15). A feeding unit is provided on the surface of the dispersing box (17). An auxiliary blowing unit is provided between the cylinder (2) and the dispersing box (17). An impurity auxiliary cleaning component is provided on the bottom surface of the cylinder (2). The impurity auxiliary cleaning component includes a fixing ring (23), a vibration motor (28), and a discharge pipe (30). The fixing ring (23) is fixedly sleeved on the surface of the magnetic cover (4). The vibration motor (28) is fixedly installed on the bottom surface of the fixing ring (23). The discharge pipe (30) is fixedly connected to the bottom surface of the magnetic cover (4). The discharge pipe (30) has a discharge chamber (3001) and an impurity discharge chamber (3002) respectively opened inside.

2. The electromagnetic iron separator for lithium iron phosphate according to claim 1, characterized in that: The feeding unit includes a feeding hopper (5), a feeding box (6), a support plate (7), a second rotating rod (8), a drive motor (9), and an arc-shaped feeding plate (10). The feeding box (6) is fixedly connected to the surface of the dispersing box (17). The support plate (7) is symmetrically fixedly connected between the feeding box (6) and the cylinder (2). The feeding hopper (5) is fixedly connected to the surface of the feeding box (6). The second rotating rod (8) is rotatably connected inside the feeding box (6). The arc-shaped feeding plate (10) is fixedly connected in a circular array to the surface of the rod body of the second rotating rod (8). The drive motor (9) is fixedly connected to the surface of the feeding box (6). One end of the second rotating rod (8) and the output end of the drive motor (9) are coaxially fixedly connected.

3. The electromagnetic iron separator for lithium iron phosphate according to claim 2, characterized in that: One end of the first rotating rod (14) and the second rotating rod (8) extends to the outside of the box body. The end of the second rotating rod (8) is fixedly connected to a large pulley (11), and the end of the first rotating rod (14) is fixedly connected to a small pulley (13). The large pulley (11) and the small pulley (13) are connected by a belt (12).

4. The electromagnetic iron separator for lithium iron phosphate according to claim 1, characterized in that: The auxiliary blowing unit includes a hollow ring tube (18), a jet nozzle (19), an air supply pipe (21), and a high-pressure air pump (22). The hollow ring tube (18) is fixedly connected to the bottom surface of the dispersing box (17), and the hollow ring tube (18) and the dispersing box (17) are connected. The jet nozzle (19) is fixedly connected to the inner wall of the hollow ring tube (18) in a circular array. The high-pressure air pump (22) is fixedly connected to the surface of the support frame (1) through a mounting bracket. The air supply pipe (21) is fixedly connected between the high-pressure air pump (22) and the hollow ring tube (18), and the air supply pipe (21) and the hollow ring tube (18) are connected.

5. The electromagnetic iron separator for lithium iron phosphate according to claim 4, characterized in that: The jet nozzles (19) are arranged in a three-layer ring array along the side wall of the hollow ring tube (18). The included angle between adjacent jet nozzles (19) is 30°. The uppermost jet nozzle (19) is inclined downward at 30° to the side wall of the hollow ring tube (18), the middle jet nozzles (19) are horizontally arranged, and the lower jet nozzles (19) are inclined upward at 30°.

6. The electromagnetic iron separator for lithium iron phosphate according to claim 5, characterized in that: The nozzle (19) has a circular array of fixedly connected spoilers (20), and the surface of the spoilers (20) is curved.

7. The electromagnetic iron separator for lithium iron phosphate according to claim 1, characterized in that: The bottom surface of the fixing ring (23) is symmetrically fixedly connected to a T-shaped rod (25), and a V-shaped plate (24) is slidably connected to the surface of each T-shaped rod (25). The V-shaped plate (24) is fixedly connected to the support frame (1), and a spring (26) is fixedly connected between the fixing ring (23) and the V-shaped plate (24). The spring (26) is sleeved on the surface of the T-shaped rod (25).

8. The electromagnetic iron separator for lithium iron phosphate according to claim 7, characterized in that: A retractable hose (27) is fixedly connected between the magnetic shield (4) and the hollow ring tube (18).

9. The electromagnetic iron separator for lithium iron phosphate according to claim 1, characterized in that: The sidewall of the discharge pipe (30) is fixedly connected with a stop block (3003) at a position above the discharge chamber (3001) and the waste discharge chamber (3002). The inner wall of the discharge pipe (30) is rotatably connected with a third rotating rod (3004). A baffle (3005) is fixedly connected to the surface of the third rotating rod (3004). One end of the third rotating rod (3004) extends to the outside of the discharge pipe (30) and is fixedly connected to a handwheel (3006) located on the outside of the discharge pipe (30).

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