Electromagnetic ore dressing device

Abstract

The application belongs to the technical field of elutriation equipment, and particularly relates to an electromagnetic ore dressing device, which comprises a desliming magnetic separation column, an intermediate treatment device and a cleaning magnetic separation column. The intermediate treatment device comprises a rack, an intermediate hopper, a jet device and a scattering cabin. The intermediate hopper and the jet device are fixedly connected with the rack. The concentrate discharge pipe of the desliming magnetic separation column is sequentially communicated with a harmonic wave demagnetizer and a feeding pipe. The concentrate discharged from the concentrate discharge pipe of the desliming magnetic separation column enters the intermediate hopper through the harmonic wave demagnetizer and the feeding pipe in sequence. The jet pipe of the jet device is communicated with the scattering cabin. A lining plate is arranged in the scattering cabin and oppositely arranged with the jet pipe. The scattering cabin is provided with a discharge hopper which is communicated with the ore feeding opening of the cleaning magnetic separation column through a pipeline. The short and thick desliming magnetic separation column and the slender cleaning magnetic separation column are combined, and the magnetic field and the flushing water are independently adjusted, so that the quick desliming and high-precision separation are considered, and the adaptability is high.

Description

Technical Field

[0001] This invention belongs to the technical field of washing equipment, specifically relating to an electromagnetic mineral separation device. Background Technology

[0002] Magnetic separation columns, as common magnetic mineral separation equipment, are widely used in the separation of magnetic minerals such as iron ore. Traditional magnetic separation processes typically employ single-stage magnetic separation columns or simple series configurations, directly proceeding to the cleaning stage after roughing. However, in actual separation processes, the concentrate after enrichment often exhibits a significant "magnetic agglomeration" phenomenon, where fine-grained magnetic minerals adhere to each other and clump together due to residual magnetism, mixing with gangue and slime. This leads to a decrease in separation accuracy and difficulty in improving concentrate grade in subsequent cleaning stages.

[0003] While existing technologies can improve the separation effect by adjusting the magnetic field strength or the washing water, the enrichment and cleaning stages often share the same magnetic field and water flow parameters, making it difficult to balance desliming efficiency and cleaning accuracy. In particular, for magnetite with different particle size ranges, materials below -200 mesh (90 μm) can still be separated by a single slender magnetic separation column, but ultrafine particles below -325 mesh (about 43 μm) will have a geometrically slower settling velocity in water and are more prone to suspension and inclusion due to magnetic agglomeration (magnetic agglomeration is particularly serious). A single magnetic separation column can hardly effectively break up the agglomerates, resulting in a significant decrease in the separation effect.

[0004] In addition, the destruction of magnetic agglomerates mostly relies on simple stirring or high-frequency demagnetization, which has limited effect. The coordination between slurry concentration adjustment and dispersion process is insufficient, affecting the overall sorting efficiency. Especially under high coercivity conditions, magnetic agglomerates are more compact and conventional water flow cannot disperse them, resulting in reduced sorting efficiency.

[0005] Therefore, there is a need for an integrated sorting device that can effectively connect enrichment and fine selection, and specifically address the problems of magnetic agglomeration and slurry pretreatment. Summary of the Invention

[0006] To address the aforementioned technical problems, this invention provides an electromagnetic mineral separation device. This device first performs roughing through a desliming magnetic separation column, then demagnetizes and breaks down magnetic agglomerates through an intermediate processing device, and finally passes through a fine-selection magnetic separation column. This effectively improves separation efficiency and concentrate quality, especially in processing -325 mesh 95 ultrafine magnetite, achieving efficient desliming and fine separation.

[0007] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows:

[0008] An electromagnetic mineral separation device includes a desliming magnetic separation column, an intermediate processing unit, and a fine separation magnetic separation column;

[0009] The intermediate processing device includes a frame, an intermediate hopper, an ejector, and a dispersing chamber; the intermediate hopper and the ejector are both fixedly connected to the frame, and the concentrate discharge pipe of the desliming magnetic separation column is sequentially connected to a harmonic wave demagnetizer and a feed pipe; the concentrate discharged from the concentrate discharge pipe of the desliming magnetic separation column sequentially enters the intermediate hopper through the harmonic wave demagnetizer and the feed pipe.

[0010] The jet ejector's suction pipe is connected to the discharge port of the intermediate hopper, and the jet ejector's inlet pipe is connected to a water inlet pipe; the intermediate hopper is connected to a water supply pipe, and the water supply pipe is connected to the water inlet pipe.

[0011] The ejector tube of the jet generator is connected to the dispersing chamber, which is equipped with a liner plate, which is positioned opposite to the ejector tube. The dispersing chamber is equipped with a discharge hopper, which is connected to the feed port of the fine magnetic separation column through a pipe.

[0012] The intermediate hopper is equipped with a rotating bucket, which is rotatably connected to the intermediate hopper. The frame is equipped with a drive mechanism connected to the rotating bucket. Several diversion plates are provided on the side of the rotating bucket.

[0013] The drive mechanism includes a connecting shaft, a connecting frame, and a drive motor. The connecting frame is slidably connected to the frame, and bolts are provided between the connecting frame and the frame. The housing of the drive motor is fixedly connected to the connecting frame, and the two ends of the connecting shaft are respectively connected to the output shaft of the drive motor and the rotating bucket.

[0014] The bottom of the rotating bucket is connected to a diversion pipe, and at least two diversion pipes are provided; the rotating bucket is connected to the water supply pipe through a water supply branch pipe.

[0015] The disintegration chamber is equipped with an adjustment mechanism connected to the liner, which adjusts the distance and angle between the liner and the injection tube.

[0016] The adjustment mechanism includes a movable plate, an adjustment plate, and a push cylinder. The movable plate is connected to the disintegration chamber via the push cylinder. The adjustment plate is hinged to the movable plate, and an angle adjustment mechanism is provided between the adjustment plate and the movable plate to adjust the tilt angle of the adjustment plate. The adjustment plate is inserted into the liner plate, and the adjustment plate is provided with corresponding slots.

[0017] The angle adjustment mechanism includes a fixed angle plate and a telescopic cylinder. There are two fixed angle plates, which are spaced apart and fixedly connected to the adjustment plate. The movable plate has an opening that cooperates with the fixed angle plates. A guide post is slidably connected between the two fixed angle plates, and the fixed angle plates have corresponding inclined grooves. The two ends of the telescopic cylinder are fixedly connected to the guide post and the movable plate, respectively.

[0018] The upper part of the disintegration chamber is provided with a pair of openable doors, which are hinged to the disintegration chamber and are provided with a drive mechanism; the doors are provided with guide grooves; when the adjustment plate is vertical, the liner on the adjustment plate is opposite to the guide groove.

[0019] The movable plate is provided with a fixing assembly connected to the liner plate; the fixing assembly includes a fixing cylinder, a pin and a spring, the fixing cylinder is fixedly connected to the adjusting plate, the pin is slidably connected to the fixing cylinder, and the two ends of the spring are fixedly connected to the fixing cylinder and the pin respectively; the liner plate is provided with a connecting hole for connecting to the pin.

[0020] The fixing components are at least two; the fixing components also include a pushing wedge and a reset rod, the reset rod is fixedly connected to the moving plate, the pin is provided with a pushing groove, the pushing wedge is slidably connected to the fixing cylinder, and both ends of the pushing wedge are provided with inclined surfaces that cooperate with the pushing groove and the reset rod;

[0021] When the adjusting plate is vertical, the reset rod pushes the inclined block to move the pin away from the liner, thus separating the pin from the liner.

[0022] Compared with the prior art, the beneficial effects of this invention are:

[0023] By combining short, thick desliming magnetic separation columns with slender, long cleaning magnetic separation columns, and independently adjusting the magnetic field and washing water for each column, a system that balances rapid desliming with high-precision separation is achieved, offering strong adaptability. The short, thick magnetic separation column features a high magnetic field strength, high water volume, and high flow rate, specifically designed for desliming operations; the slender magnetic separation column uses a medium-to-low water volume design, suitable for fine separation. The synergistic effect of the two columns effectively avoids the problem of fine mud charge adhesion, improving the recovery rate of ultrafine particles.

[0024] The intermediate processing unit integrates multiple functions such as harmonic wave demagnetization, tangential slurry adjustment by rotating bucket, and jet impact dispersing, effectively breaking down magnetic agglomerates and improving the dispersion and uniformity of the slurry. Furthermore, the Venturi ejector generates high-speed turbulence in the compression section, achieving strong mixing of the slurry, with a mixing intensity far exceeding that of traditional flotation columns, greatly enhancing the effect of breaking down magnetic agglomerates.

[0025] By employing a dual-column series process and the core design of a Venturi injector, the problem of separating -325 mesh 95 ultrafine magnetite particles is effectively solved, achieving both desliming and fine selection while breaking down magnetic agglomerates.

[0026] The system employs an adjustable-angle liner structure and a guide-type liner installation mechanism, allowing for angle adjustments based on mineral characteristics and facilitating maintenance and replacement. A rotating hopper and diverter plate are added inside the intermediate hopper, combined with tangential water supply and a bottom rotating diverter pipe, to improve the mixing effect of the slurry and water. The drive mechanism and liner can be hoisted and quickly disassembled, facilitating equipment cleaning and maintenance. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the present invention;

[0028] Figure 2 This is a schematic diagram of the intermediate processing device of the present invention;

[0029] Figure 3 yes Figure 2 A magnified view of a section at point A in the middle;

[0030] Figure 4 yes Figure 2 A magnified view of a section at point B in the middle;

[0031] Figure 5 yes Figure 2 A half-sectional view of the structure shown;

[0032] Figure 6 yes Figure 5 A magnified view of a section at point C;

[0033] Figure 7 yes Figure 5 A magnified view of a section at point D;

[0034] Figure 8 Figure 2 A partial sectional view of the structure shown;

[0035] Figure 9 yes Figure 8 A magnified view of a section at point E in the middle;

[0036] Figure 10 yes Figure 8 A magnified view of a section at point F in the middle;

[0037] Wherein: 1 is the desliming magnetic separation column, 100 is the concentrate discharge pipe, 2 is the intermediate processing unit, 20 is the frame, 21 is the intermediate hopper, 22 is the ejector, 23 is the dispersing chamber, 24 is the harmonic wave demagnetizer, 25 is the feed pipe, 26 is the suction pipe, 27 is the discharge port, 28 is the water inlet pipe, 29 is the water supply pipe, 210 is the injection pipe, 211 is the liner, 212 is the discharge hopper, 213 is the rotating bucket, 214 is the diverter plate, 215 is the connecting shaft, 216 is the connecting frame, 217 is the drive motor, and 218 is the distributor. Flow pipe, 219 is water supply branch pipe, 220 is connection hole, 3 is fine magnetic separation column, 300 is feed port, 4 is adjustment mechanism, 40 is moving plate, 41 is adjustment plate, 42 is push cylinder, 43 is slot, 44 is fixed angle plate, 45 is telescopic cylinder, 46 is guide column, 47 is inclined groove, 5 is door body, 50 is guide groove, 6 is drive mechanism, 7 is fixed component, 70 is fixed cylinder, 71 is pin, 72 is spring, 73 is push inclined block, 74 is push groove, 75 is inclined surface, 76 is reset rod. Detailed Implementation

[0038] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0039] like Figures 1 to 10 As shown, an electromagnetic mineral separation device includes a desliming magnetic separation column 1, an intermediate processing unit 2, and a cleaning magnetic separation column 3. Both the desliming magnetic separation column 1 and the cleaning magnetic separation column 3 can be constructed using existing technologies. The difference lies in that the desliming magnetic separation column 1 is short and thick, while the cleaning magnetic separation column 3 is long and thin. The desliming magnetic separation column 1 employs a large magnetic field and large water flow (magnetic field design and rising water flow) to address the issue of rapid desliming; furthermore, the magnetic fields of the desliming magnetic separation column 1 and the cleaning magnetic separation column 3 can be adjusted independently.

[0040] The main function of the intermediate processing unit 2 is to demagnetize and disperse (break up magnetic agglomerates) the concentrate obtained after desliming from the desliming magnetic separation column 1, so as to facilitate the subsequent processing by the finer magnetic separation column 3. This processing method can effectively improve the separation efficiency.

[0041] The intermediate processing unit 2 includes a frame 20, an intermediate hopper 21, an ejector 22, and a dispersing chamber 23; the intermediate hopper 21 and the ejector 22 are both fixedly connected to the frame 20. The concentrate discharge pipe 100 of the desliming magnetic separation column 1 is sequentially connected to a harmonic wave demagnetizer 24 and a feed pipe 25. The concentrate discharged from the concentrate discharge pipe 100 of the desliming magnetic separation column 1 is first demagnetized by the harmonic wave demagnetizer, and then enters the intermediate hopper 21 through the feed pipe 25.

[0042] The inlet pipe of the ejector 22 is connected to the water inlet pipe 28; the intermediate hopper 21 is connected to the water supply pipe 29, which is connected to the water inlet pipe 28. High-pressure water will enter the water supply pipe 29 and the ejector 22 respectively; a valve is installed on the water supply pipe 29.

[0043] The suction pipe 26 of the ejector 22 is connected to the discharge port 27 of the intermediate hopper 21. Water from the water supply pipe 29 enters the intermediate hopper 21 and mixes with the concentrate, thus adjusting the concentration. The slurry after concentration adjustment is ejected from the ejection pipe 210 of the ejector 22. The ejection pipe 210 is connected to the dispersing chamber 23, which is equipped with a liner 211. The liner 211 is positioned opposite to the ejection pipe 210. The slurry ejected from the ejection pipe 210 impacts the liner 211, thereby further breaking down the magnetic agglomerates and dispersing them.

[0044] The dispersing chamber 23 is equipped with a discharge hopper 212, which is connected to the feed port 300 of the fine magnetic separation column 3 via a pipeline (with a conveying pump as needed). The dispersed slurry will be sent to the fine magnetic separation column 3 for fine separation operation through the discharge hopper 212 and the pipeline.

[0045] Furthermore, to improve the mixing effect, a rotating bucket 213 is provided inside the intermediate hopper 21, and the rotating bucket 213 is rotatably connected to the intermediate hopper 21. A drive mechanism 6 connected to the rotating bucket 213 is provided on the frame 20. Several diversion plates 214 are provided on the side of the rotating bucket 213, forming several distribution chambers between the rotating bucket 213 and the intermediate hopper 21. The lower end of the feed pipe 25 is located between the rotating bucket 213 and the intermediate hopper 21. The concentrate enters between the distribution chambers and, through the rotation of the rotating bucket 213, the concentrate moves downward in a spiral shape and mixes with the water sprayed in by the water supply pipe 29. The water supply pipe 29 is tangential to the intermediate hopper 21, that is, a tangential water supply method is adopted, which can further improve the mixing and slurry conditioning effect.

[0046] Furthermore, the drive mechanism 6 includes a connecting shaft 215, a connecting frame 216, and a drive motor 217. The connecting frame 216 is slidably connected to the frame 20, and bolts are provided between the connecting frame 216 and the frame 20. In the normal state, the connecting frame 216 is fixed to the frame 20 by the bolts, restricting the movement of the connecting frame 216. When cleaning or maintenance is required, the connecting frame 216 is connected to the lifting equipment, and then the bolts are removed. The drive mechanism 6 and the rotating bucket 213 are then lifted by the lifting equipment.

[0047] Specifically: the housing of the drive motor 217 is fixedly connected to the connecting frame 216, and both ends of the connecting shaft 215 are connected to the output shaft of the drive motor 217 and the rotating bucket 213, respectively. The drive motor 217 is a reducer; its output shaft rotates to drive the connecting shaft 215 and the rotating bucket 213 to rotate.

[0048] Furthermore, the tangential water supply method described above still has limited mixing effect with the concentrate; therefore, a diversion pipe 218 is connected to the bottom of the rotating bucket 213, and at least two diversion pipes 218 are provided; the rotating bucket 213 is connected to the water supply pipe 29 through a water supply branch pipe 219. Water enters the rotating bucket 213 through the water supply branch pipe 219, and then is discharged through the diversion pipe 218 to mix with the slurry. Moreover, the water discharged from the diversion pipe 218 will mix with the concentrate in a rotating manner, thereby improving the uniformity of mixing.

[0049] Furthermore, the dispersing chamber 23 is equipped with an adjustment mechanism 4 connected to the liner 211. The distance and angle between the liner 211 and the injection tube 210 can be adjusted according to the actual working conditions to ensure the dispersing effect.

[0050] Furthermore, the adjustment mechanism 4 includes a movable plate 40, an adjusting plate 41, and a push cylinder 42. The movable plate 40 is connected to the disintegration chamber 23 via the push cylinder 42. The cylinder body of the push cylinder 42 is fixedly connected to the disintegration chamber 23, and the piston rod of the push cylinder 42 passes through the disintegration chamber 23 and is fixedly connected to the movable plate 40. The extension and retraction of the piston rod of the push cylinder 42 drives the movable plate 40 to move back and forth, changing the distance between the liner 211 and the injection tube 210.

[0051] The adjusting plate 41 and the movable plate 40 are hinged together, and an angle adjustment mechanism is provided between the adjusting plate 41 and the movable plate 40 to adjust the tilt angle of the angle adjustment plate and the liner 211. The adjusting plate 41 and the liner 211 are inserted together, and the liner 211 is provided with a corresponding slot 43.

[0052] Furthermore, the angle adjustment mechanism includes a fixed angle plate 44 and a telescopic cylinder 45. There are two fixed angle plates 44, which are spaced apart and fixedly connected to the adjustment plate 41. The moving plate 40 has an opening that cooperates with the fixed angle plate 44. When the adjustment plate 41 is vertical, the fixed angle plate 44 is located in the opening. The purpose of the opening is to prevent interference between the fixed angle plate 44 and the moving plate 40.

[0053] A guide post 46 is slidably connected between two fixed angle plates 44, and the fixed angle plates 44 are provided with corresponding inclined grooves 47; the two ends of the telescopic cylinder 45 are fixedly connected to the guide post 46 and the moving plate 40 respectively. The extension and retraction of the piston rod of the telescopic cylinder 45 drives the guide post 46 to move along the inclined groove 47, thereby changing the tilt angle of the adjusting plate 41.

[0054] Furthermore, the upper part of the dismantling chamber 23 is provided with a pair of openable and closable doors 5, which are hinged to the dismantling chamber 23 and equipped with a drive mechanism 6. The drive mechanism 6 can be a hydraulic cylinder, with both ends of the hydraulic cylinder hinged to the doors 5 and the dismantling chamber 23 respectively; the opening and closing of the doors 5 is achieved by the extension and retraction of the piston rod of the hydraulic cylinder.

[0055] The door body 5 is provided with a guide groove 50. When the adjusting plate 41 is vertical, the liner 211 on the adjusting plate 41 is opposite to the guide groove 50. The purpose of this structure is to facilitate the replacement of the liner 211. When installing the liner 211, the liner 211 is moved by a lifting device (the liner 211 is provided with lifting lugs) so that the liner 211 is located at the guide groove 50. The guide groove 50 guides the liner 211 and facilitates its insertion into the adjusting plate 41.

[0056] Furthermore, the liner 211 and the adjusting plate 41 can be fixedly connected by bolts. However, for ease of installation, a fixing component 7 for connecting the liner 211 is provided on the movable plate 40.

[0057] The fixing assembly 7 includes a fixing cylinder 70, a pin 71, and a spring 72. The fixing cylinder 70 is fixedly connected to the adjusting plate 41, the pin 71 is slidably connected to the fixing cylinder 70, and the spring 72 is located inside the fixing cylinder 70. Both ends of the spring 72 are fixedly connected to the fixing cylinder 70 and the pin 71, respectively. The liner 211 is provided with a connecting hole 220 for connecting to the pin 71.

[0058] After the liner 211 is inserted into the adjusting plate 41, the pin 71 extends into the connecting hole 220, thereby restricting the movement of the liner 211. When it is necessary to remove the liner 211, the pin 71 needs to be pushed to move away from the liner 211, so that the pin 71 separates from the liner 211 and releases the restriction on the liner 211.

[0059] Furthermore, the number of fixed components 7 is set according to the actual situation, and at least two are required to ensure the connection effect.

[0060] The fixed assembly 7 also includes a pusher block 73 and a reset rod 76. The reset rod 76 is fixedly connected to the moving plate 40. The pin 71 is provided with a pusher groove 74. The pusher block 73 is slidably connected to the fixed cylinder 70. Both ends of the pusher block 73 are provided with inclined surfaces 75 that cooperate with the pusher groove 74 and the reset rod 76.

[0061] When the adjusting plate 41 is vertical, the reset rod 76 pushes the wedge block 73 to move the pin 71 away from the liner 211 (the spring 72 is compressed), causing the pin 71 to separate from the liner 211. When the adjusting plate 41 is tilted, until the reset rod 76 pushes the wedge block 73 to separate, the spring 72 releases its elastic potential energy to push the pin 71 into the connecting hole 220.

[0062] With the above structural arrangement, during installation, the adjusting plate 41 is in a vertical state, and the pin 71 is separated from the liner 211; after installation, the adjusting plate 41 is tilted, and the pin 71 is connected to the liner 211.

[0063] The above description only illustrates preferred embodiments of the present invention, but the present invention is not limited to the above embodiments.

Claims

1. An electromagnetic beneficiation device, characterized by: It comprises a desliming magnetic separation column (1), an intermediate treatment device (2) and a fine separation magnetic separation column (3); The intermediate treatment device (2) comprises a rack (20), an intermediate hopper (21), a fluidizer (22) and a scattering cabin (23); the intermediate hopper (21) and the fluidizer (22) are fixedly connected with the rack (20), a concentrate discharge pipe (100) of the desliming magnetic separation column (1) is sequentially communicated with a harmonic wave demagnetizer (24) and a feeding pipe (25); the concentrate discharged from the concentrate discharge pipe (100) of the desliming magnetic separation column (1) enters the intermediate hopper (21) through the harmonic wave demagnetizer (24) and the feeding pipe (25) in sequence; The suction pipe (26) of the fluidizer (22) is communicated with a discharge port (27) of the intermediate hopper (21), and the inlet pipe of the fluidizer (22) is communicated with a water inlet pipe (28); the intermediate hopper (21) is communicated with a water adding pipe (29), and the water adding pipe (29) is communicated with the water inlet pipe (28); The outlet pipe (210) of the fluidizer (22) is communicated with the scattering cabin (23), and the scattering cabin (23) is provided with a lining plate (211) opposite to the outlet pipe (210); the scattering cabin (23) is provided with a discharge hopper (212) communicated with a feeding opening (300) of the fine separation magnetic separation column (3) through a pipeline.

2. An electromagnetic separation device according to claim 1, characterised in that: The intermediate hopper (21) is provided with a rotary hopper (213) rotatably connected with the intermediate hopper (21), and the rack (20) is provided with a driving mechanism (6) connected with the rotary hopper (213); the side of the rotary hopper (213) is provided with a plurality of flow dividing plates (214).

3. An electromagnetic separation device according to claim 2, characterised in that: The driving mechanism (6) comprises a connecting shaft (215), a connecting frame (216) and a driving motor (217), the connecting frame (216) is slidably connected with the rack (20), and a bolt is arranged between the connecting frame (216) and the rack (20); the shell of the driving motor (217) is fixedly connected with the connecting frame (216), and the two ends of the connecting shaft (215) are respectively connected with the output shaft of the driving motor (217) and the rotary hopper (213).

4. An electromagnetic separation device according to claim 2 or 3, characterised in that: The bottom of the rotary hopper (213) is communicated with a flow dividing pipe (218), and the flow dividing pipe (218) is provided with at least two; the rotary hopper (213) is communicated with the water adding pipe (29) through a water adding branch pipe (219).

5. An electromagnetic separation device according to claim 1, characterised in that: The scattering cabin (23) is provided with an adjusting mechanism (4) connected with the lining plate (211), and the distance and angle between the lining plate (211) and the outlet pipe (210) are adjusted through the adjusting mechanism (4).

6. An electromagnetic separation device according to claim 5, characterised in that: The adjusting mechanism (4) comprises a moving plate (40), an adjusting plate (41) and a push-moving cylinder (42), the moving plate (40) is connected with the scattering cabin (23) through the push-moving cylinder (42); the adjusting plate (41) is hingedly connected with the moving plate (40), an angle adjusting mechanism is arranged between the adjusting plate (41) and the moving plate (40), and the inclination angle of the adjusting plate (41) is adjusted through the angle adjusting mechanism; the adjusting plate (41) is inserted with the lining plate (211), and the adjusting plate (41) is provided with a corresponding insertion slot (43).

7. An electromagnetic separation device according to claim 6, characterised in that: The angle adjusting mechanism comprises fixed angle plates (44) and telescopic cylinders (45), two fixed angle plates (44) are provided and are spaced apart and fixedly connected with the adjusting plate (41), the moving plate (40) is provided with openings matched with the fixed angle plates (44); the guide columns (46) are slidably connected between the two fixed angle plates (44), and the fixed angle plates (44) are provided with corresponding inclined grooves (47); the two ends of the telescopic cylinder (45) are fixedly connected with the guide columns (46) and the moving plate (40) respectively.

8. An electromagnetic separation device according to claim 5, characterised in that: The upper portion of the scattering cabin (23) is provided with a pair of openable and closable door bodies (5), the door bodies (5) are hingedly connected with the scattering cabin (23) and are provided with driving mechanisms (6); the door bodies (5) are provided with guide grooves (50); when the adjusting plate (41) is in a vertical state, the lining plate (211) on the adjusting plate (41) is opposite to the guide groove (50).

9. An electromagnetic separation device according to claim 6, characterised in that: The moving plate (40) is provided with a fixing assembly (7) connected with the lining plate (211); the fixing assembly (7) comprises a fixing cylinder (70), a bolt (71) and a spring (72), the fixing cylinder (70) is fixedly connected with the adjusting plate (41), the bolt (71) is slidably connected with the fixing cylinder (70), and the two ends of the spring (72) are fixedly connected with the fixing cylinder (70) and the bolt (71) respectively; the lining plate (211) is provided with a connecting hole (220) connected with the bolt (71).

10. An electromagnetic separation device according to claim 9, characterised in that: The fixing assembly (7) is at least two; the fixing assembly (7) further comprises a pushing inclined block (73) and a reset rod (76), the reset rod (76) is fixedly connected with the moving plate (40), the bolt (71) is provided with a pushing groove (74), the pushing inclined block (73) is slidably connected with the fixing cylinder (70), and the two ends of the pushing inclined block (73) are provided with inclined surfaces (75) matched with the pushing groove (74) and the reset rod (76); When the adjusting plate (41) is in a vertical state, the reset rod (76) drives the bolt (71) to move away from the lining plate (211) through the pushing inclined block (73), so that the bolt (71) is separated from the lining plate (211).

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