High-precision magnetic separator and magnetic separation method thereof

Abstract

The application is suitable for the field of high-precision magnetic separators, and provides a high-precision magnetic separator, which comprises a shell, the shell is communicated with a material box, and further comprises a pushing mechanism, one side of the pushing mechanism is provided with a material groove, the material groove is fixedly connected with the inner wall of the shell, the material box is communicated with a discharge pipe, the discharge pipe is opposite to the material groove, the material groove is rotationally connected with a magnetic separation mechanism, the magnetic separation mechanism is drivingly connected with the pushing mechanism, a material scraping assembly is arranged at the bottom end surface of the material groove, the material scraping assembly is used for continuously scraping and separating the magnetic mineral particles adsorbed by the magnetic separation mechanism, and a material guiding assembly is arranged at one side of the material scraping assembly; the high-precision magnetic separator provided by the application is driven by a motor to rotate a fan blade, the fan blade generates suction force to draw out the air in the shell, a filter screen cylinder filters and adsorbs the impurities in the air, and the screening precision during the screening of the magnetic particles is further improved, thereby solving the problem of low screening precision of the existing magnetic separators.

Description

Technical Field

[0001] This invention belongs to the field of high-precision magnetic separators, and particularly relates to a high-precision magnetic separator and its magnetic separation method. Background Technology

[0002] Magnetic separators remove iron powder and other pollutants from recycled powdery particles. They are widely used in resource recycling, timber industry, mining, kiln industry, chemical industry, food and other factories. They are suitable for magnetic separation of materials such as magnetite, pyrrhotite, roasted ore, and ilmenite with a particle size of less than 3mm. They are also used for iron removal from materials such as coal, non-metallic minerals, and building materials. They are one of the most widely used and versatile machines in the industry.

[0003] Traditional dry magnetic separators are used for initial selection and tailings removal of crushed magnetic ore. After crushing, the raw magnetic ore is initially separated to separate some gangue, thereby initially improving the grade of the magnetic ore after dry separation. However, when using traditional dry separators to remove tailings from raw magnetic ore, problems such as inclusions, poor ore grade, and low efficiency are likely to occur.

[0004] To avoid the aforementioned technical problems, it is indeed necessary to provide a high-precision magnetic separator and its magnetic separation method to overcome the deficiencies in the prior art. Summary of the Invention

[0005] The purpose of this invention is to provide a high-precision magnetic separator and its magnetic separation method, which aims to solve the problems of inclusions, poor ore grade and low efficiency that easily occur when using traditional dry separators to discard tailings of magnetic ore.

[0006] This invention is implemented as follows: a high-precision magnetic separator includes a housing, the housing being connected to a material bin, and further includes:

[0007] The pushing mechanism is rotatably connected to the outer shell. A material trough is provided on one side of the pushing mechanism. The material trough is fixedly connected to the inner wall of the outer shell. The material box is connected to a discharge pipe. The discharge pipe is directly opposite the material trough. The pushing mechanism can push the magnetic mineral particles forward along the material trough.

[0008] The feed trough is rotatably connected to a magnetic separation mechanism, which is connected to a pushing mechanism. Driven by the pushing mechanism, the magnetic separation mechanism continuously rotates to adsorb magnetic mineral particles with different magnetic forces in the feed trough.

[0009] A scraping component is provided on the bottom end face of the trough. The scraping component is used to continuously scrape off and separate the magnetic mineral particles adsorbed by the magnetic separation mechanism. A guiding component is provided on one side of the scraping component. The guiding component can guide and classify the material.

[0010] A water washing mechanism is provided between the pushing mechanism and the material tank, and the water washing mechanism can filter and collect the waste material in the material tank through water flow.

[0011] A drafting mechanism is provided on one side of the pushing mechanism, which can filter and adsorb dust and impurities in the outer shell.

[0012] In a further technical solution, the pushing mechanism includes a rotating tube and spiral blades. The rotating tube is rotatably connected to the outer shell, and the spiral blades are spirally arranged along the rotating tube and disposed in the material trough.

[0013] In a further technical solution, the magnetic separation mechanism includes a sleeve, a magnet, and a transmission assembly;

[0014] The sleeve is a frustum-shaped cylinder, which is fitted onto the outside of the material trough. The inner wall of the sleeve is provided with several fan-shaped grooves, each of which is filled with a magnet. The sleeve is provided with multiple strip-shaped openings along its side wall.

[0015] The transmission assembly is used to drive the sleeve to rotate, and the transmission assembly can also drive the sleeve to slide horizontally.

[0016] In a further technical solution, the transmission assembly includes a rotating shaft, a gear transmission pair, a fixed plate, and a telescopic drive component;

[0017] The rotating shaft is rotatably connected to the outer end face of the material trough, and the axis of the rotating shaft coincides with that of the material trough. The rotating shaft and the rotating tube are connected by a gear transmission pair. The sleeve is slidably connected to the rotating shaft. The fixed plate is fixedly connected to one end of the rotating shaft, and the telescopic drive is fixedly connected between the fixed plate and the sleeve.

[0018] In a further technical solution, the scraping assembly includes a guide seat and scrapers. The guide seat is fixedly connected to the outer end face of the material trough, and multiple scrapers are slidably connected to the guide seat, with each scraper inserted into a groove.

[0019] In a further technical solution, the material guiding assembly includes a guide cylinder, a material distributing trough, and a material distributing pipe;

[0020] The guide cylinder is fixedly connected to the outer shell. Multiple material distribution grooves are provided in the guide cylinder. Each material distribution groove is directly opposite a scraper. Each material distribution groove is connected to a material distribution pipe. Each material distribution pipe is equipped with a shut-off valve.

[0021] In a further technical solution, the washing mechanism includes a water pump, connecting pipes, and a filter box;

[0022] The water pump is fixedly connected to the outer end face of the housing. One end of the connecting pipe is connected to the water pump, and the other end of the connecting pipe is rotatably connected to the rotating pipe. The filter box is connected to the material tank and has a water inlet. The rotating pipe has several water outlets along its length.

[0023] The filter box is connected to the water inlet of the water pump, and a filter screen is installed in the filter box, which is inclined.

[0024] In a further technical solution, the air-expelling mechanism includes a motor, fan blades, and a filter screen.

[0025] The motor is fixedly connected to the housing, and the output shaft of the motor is fixedly connected to multiple fan blades. Multiple filter cylinders are provided on the side end face of the housing, and the filter cylinders are all facing the sleeve. The output shaft of the motor is fixedly connected to a drive wheel, and the rotating tube is fixedly connected to a driven wheel. The drive wheel and the driven wheel mesh with each other. An air inlet pipe is provided on the upper end face of the housing.

[0026] A magnetic separation method for a high-precision magnetic separator includes the following steps:

[0027] Step (1): Pour the magnetic mineral particles into the hopper. The magnetic mineral particles enter the trough through the discharge pipe. Then the pushing mechanism can push the magnetic mineral particles forward along the trough.

[0028] Step (2): Driven by the pushing mechanism, the magnetic separation mechanism adsorbs magnetic mineral particles with different magnetic forces in the trough by continuous rotation;

[0029] Step (3): The scraping component then continuously scrapes and separates the magnetic mineral particles adsorbed by the magnetic separation mechanism, and the guiding component guides and classifies the materials.

[0030] Step (4): The water washing mechanism can filter and collect the waste material in the material tank through water flow, while the air blowing mechanism can filter and adsorb dust and impurities in the outer shell.

[0031] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0032] The present invention provides a high-precision magnetic separator in which the rotating tube drives the rotating shaft to rotate through a gear transmission pair, and the rotating tube drives the sleeve to rotate. As the sleeve rotates, the magnetic mineral particles can be evenly distributed on the magnet, thereby improving the screening accuracy of magnetic particles.

[0033] This invention provides a high-precision magnetic separator. When the sleeve rotates, a scraper removes magnetic particles from the magnet. The magnetic particles are discharged through a strip-shaped opening into a feeding assembly. Magnetic particles of different magnetic properties are discharged sequentially downwards along the strip-shaped opening. The feeding trough separates and discharges magnetic particles of different magnetic properties, thereby enabling the screening and collection of magnetic particles of different magnetic properties. When the telescopic drive can drive the sleeve to slide along the rotating shaft, the sleeve moves axially closer to or further away from the feeding trough, thereby adjusting the adsorption range of the sleeve on the magnetic particles and thus adjusting the screening range of the magnetic particles.

[0034] This invention provides a high-precision magnetic separator that increases the water flow range through a rotating tube, allowing the water to flow down the side wall of the trough. This causes some of the loose magnetic mineral particles adhering to the side wall of the trough to flow downstream, effectively cleaning the inner side wall of the trough. Furthermore, when the water reaches the inlet, it does not flow horizontally along the trough but simultaneously enters the inlet from top to bottom along the side wall of the trough, creating a certain mixing effect and an impact effect. This prevents the inlet from becoming blocked and improves the screening accuracy of magnetic particles.

[0035] The present invention provides a high-precision magnetic separator in which a motor drives the fan blades to rotate in the air extraction mechanism. The fan blades generate suction to draw air out of the outer shell, and the filter screen absorbs air impurities, thereby further improving the screening accuracy of magnetic particles. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of the structure of the present invention;

[0037] Figure 2 for Figure 1 A front sectional view;

[0038] Figure 3 This is a schematic diagram showing the connection between the pushing mechanism and the sleeve;

[0039] Figure 4 for Figure 2 Enlarged structural diagram of region A in the middle;

[0040] Figure 5 This is a sectional view of the sleeve;

[0041] Figure 6 for Figure 5 Enlarged structural cross-sectional view of region B in the middle.

[0042] In the attached diagram: 1. Outer shell; 2. Material box; 3. Pushing mechanism; 31. Rotary tube; 32. Spiral blade; 4. Material trough; 5. Magnetic separation mechanism; 51. Sleeve; 52. Magnet; 53. Transmission assembly; 531. Rotating shaft; 532. Gear transmission pair; 533. Fixed plate; 534. Telescopic drive component; 6. Scraping assembly; 61. Guide seat; 62. Scraper; 7. Guide assembly; 71. Guide cylinder; 72. Distributing trough; 73. Distributing pipe; 8. Washing mechanism; 81. Water pump; 82. Connecting pipe; 83. Filter box; 9. Exhaust mechanism; 91. Motor; 92. Fan blade; 93. Filter screen cylinder; 10. Discharge pipe; 11. Groove; 12. Strip opening; 13. Water outlet; 15. Water inlet; 16. Filter screen plate; 17. Driving wheel; 18. Driven wheel; 19. Air inlet pipe. Detailed Implementation

[0043] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0044] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0045] like Figures 1-6 As shown, a high-precision magnetic separator provided by the present invention includes a housing 1, the housing 1 being connected to a material box 2, and further includes:

[0046] The pushing mechanism 3 is rotatably connected to the outer shell 1. A material trough 4 is provided on one side of the pushing mechanism 3. The entire material trough 4 is made of a material that has good magnetic insulation, preferably aluminum or copper. The material trough 4 is fixedly connected to the inner wall of the outer shell 1. The material box 2 is connected to a discharge pipe 10. The discharge pipe 10 is directly opposite the material trough 4. The pushing mechanism 3 can push the magnetic mineral particles forward along the material trough 4.

[0047] The material trough 4 is rotatably connected to a magnetic separation mechanism 5, which is connected to a pushing mechanism 3. Driven by the pushing mechanism 3, the magnetic separation mechanism 5 adsorbs magnetic mineral particles with different magnetic forces in the material trough 4 by continuous rotation.

[0048] The bottom surface of the feed trough 4 is provided with a scraping component 6, which is used to continuously scrape off and separate the magnetic mineral particles adsorbed by the magnetic separation mechanism 5. A guiding component 7 is provided on one side of the scraping component 6, which can guide and classify the material.

[0049] A water washing mechanism 8 is provided between the pushing mechanism 3 and the material tank 4. The water washing mechanism 8 can filter and collect the waste material in the material tank 4 through water flow.

[0050] A drafting mechanism 9 is provided on one side of the pushing mechanism 3, which can filter and adsorb dust and impurities in the outer shell 1.

[0051] In use, magnetic mineral particles are poured into the material box 2 and then enter the material trough 4 through the discharge pipe 10. The pushing mechanism 3 then pushes the magnetic mineral particles forward along the material trough 4. Driven by the pushing mechanism 3, the magnetic separation mechanism 5 continuously rotates to adsorb magnetic mineral particles with different magnetic forces in the material trough 4. Then, the scraping component 6 continuously scrapes and separates the magnetic mineral particles adsorbed by the magnetic separation mechanism 5, and the guiding component 7 guides and classifies the materials. The washing mechanism 8 filters and collects the waste material in the material trough 4 through water flow, while the induced draft mechanism 9 filters and adsorbs dust and impurities in the outer shell 1.

[0052] In this embodiment of the invention, as a preferred embodiment, the pushing mechanism 3 includes a rotating tube 31 and a spiral blade 32. The rotating tube 31 is rotatably connected to the outer shell 1, and the spiral blade 32 is spirally arranged along the rotating tube 31 and disposed in the material trough 4.

[0053] In the pushing mechanism 3, the rotating tube 31 rotates, and the rotating tube 31 pushes the magnetic mineral particles forward along the feed trough 4 through the spiral blades 32.

[0054] In this embodiment of the invention, as a preferred embodiment, the magnetic separation mechanism 5 includes a sleeve 51, a magnet 52, and a transmission assembly 53;

[0055] The sleeve 51 is a frustum-shaped cylinder. The sleeve 51 is sleeved on the outside of the material trough 4. The inner wall of the sleeve 51 is provided with a number of fan-shaped grooves 11. Magnets 52 are laid in each of the grooves 11. The sleeve 51 is provided with a number of strip-shaped openings 12 along the side wall.

[0056] The transmission component 53 is used to drive the sleeve 51 to rotate, and the transmission component 53 can drive the sleeve 51 to slide horizontally.

[0057] In the magnetic separation mechanism 5, the transmission component 53 is used to drive the sleeve 51 to rotate, and the magnet 52 in the groove 11 moves synchronously with the rotation of the sleeve 51.

[0058] As the magnetic mineral particles move forward along the feed trough 4, the distance between the sleeve 51 and the magnetic mineral particles in the feed trough 4 decreases. When the magnet 52 in the groove 11 moves to the top of the feed trough 4 with the rotation of the sleeve 51, the magnetic mineral particles with stronger magnetism are attracted to the magnet 52 at the opening of the sleeve 51. As the magnetic mineral particles move forward along the feed trough 4, the weaker the magnetic particles are attracted to the magnet 52 on the inner side of the sleeve 51. At the same time, as the sleeve 51 rotates, the magnetic mineral particles can be evenly distributed on the magnet 52 in the groove 11.

[0059] In this embodiment of the invention, as a preferred embodiment, the transmission component 53 includes a rotating shaft 531, a gear transmission pair 532, a fixed plate 533, and a telescopic drive component 534.

[0060] The rotating shaft 531 is rotatably connected to the outer end face of the material trough 4, and the axis of the rotating shaft 531 coincides with that of the material trough 4. The rotating shaft 531 is connected to the rotating tube 31 through a gear transmission pair 532. The sleeve 51 is slidably connected to the rotating shaft 531. The fixed plate 533 is fixedly connected to one end of the rotating shaft 531, and the telescopic drive member 534 is fixedly connected between the fixed plate 533 and the sleeve 51.

[0061] In the transmission assembly 53, the rotating tube 31 drives the rotating shaft 531 to rotate through the gear transmission pair 532, and the rotating tube 31 drives the sleeve 51 to rotate; the telescopic drive member 534 is preferably an electric telescopic rod, which can drive the sleeve 51 to slide along the rotating shaft 531.

[0062] In this embodiment of the invention, as a preferred embodiment of the invention, the scraping assembly 6 includes a guide seat 61 and a scraper 62. The guide seat 61 is fixedly connected to the outer end face of the material trough 4. The guide seat 61 is slidably connected to a plurality of scrapers 62, and each scraper 62 is inserted into a groove 11.

[0063] In the scraping assembly 6, when the sleeve 51 rotates, the scraper 62 scrapes off the magnetic particles on the magnet 52. The magnetic particles are discharged into the guiding assembly 7 through the strip opening 12. Magnetic particles of different magnetic properties are discharged downward along the strip opening 12 in sequence.

[0064] In this embodiment of the invention, as a preferred embodiment, the material guiding assembly 7 includes a guide cylinder 71, a material distributing trough 72, and a material distributing pipe 73;

[0065] The guide cylinder 71 is fixedly connected to the outer shell 1. Multiple material distribution grooves 72 are provided in the guide cylinder 71. Each material distribution groove 72 is directly opposite a scraper 62. Each material distribution groove 72 is connected to a material distribution pipe 73. Each material distribution pipe 73 is equipped with a shut-off valve.

[0066] In the feeding assembly 7, magnetic particles with different magnetic properties are discharged downwards along the strip opening 12 in sequence, and the distributing trough 72 separates and discharges the magnetic particles with different magnetic properties respectively.

[0067] In this embodiment of the invention, as a preferred embodiment, the water washing mechanism 8 includes a water pump 81, a connecting pipe 82, and a filter box 83;

[0068] The water pump 81 is fixedly connected to the outer end face of the outer casing 1. One end of the connecting pipe 82 is connected to the water pump 81, and the other end of the connecting pipe 82 is rotatably connected to the rotating pipe 31. The filter box 83 is connected to the material tank 4 and has an inlet 15. The rotating pipe 31 has several outlet holes 13 along its length.

[0069] The filter box 83 is connected to the inlet of the water pump 81. A filter screen 16 is provided in the filter box 83. The filter screen 16 is inclined. The bottom plate of the filter box 83 is removable, so as to facilitate the replacement and cleaning of the filter screen 16.

[0070] In the water washing mechanism 8, the water pump 81 draws water out of the filter box 83, and then the water flows through the connecting pipe 82 to the rotating pipe 31. The rotating pipe 31 rotates continuously, and the water flows through the water outlet 13 to the material tank 4, thereby flushing the impurities into the filter box 83. Then the impurities are filtered through the filter screen 16, and the cycle repeats.

[0071] In this embodiment of the invention, as a preferred embodiment, the air-guiding mechanism 9 includes a motor 91, a fan blade 92, and a filter cylinder 93;

[0072] The motor 91 is fixedly connected to the outer casing 1. The output shaft of the motor 91 is fixedly connected to multiple fan blades 92. Multiple filter cylinders 93 are provided on the side end face of the outer casing 1. The filter cylinders 93 are all facing the sleeve 51. The output shaft of the motor 91 is fixedly connected to a drive wheel 17. The rotating tube 31 is fixedly connected to a driven wheel 18. The drive wheel 17 and the driven wheel 18 mesh. An air inlet pipe 19 is provided on the upper end face of the outer casing 1.

[0073] In the air intake mechanism 9, the motor 91 drives the fan blade 92 to rotate, and the fan blade 92 generates suction to draw the air out of the outer casing 1. The filter screen 93 filters and adsorbs impurities. The output shaft of the motor 91 drives the rotating tube 31 to rotate through the engagement of the driving wheel 17 and the driven wheel 18.

[0074] A magnetic separation method for a high-precision magnetic separator includes the following steps:

[0075] Step (1): Pour the magnetic mineral particles into the material box 2. The magnetic mineral particles enter the material trough 4 through the discharge pipe 10. Then the pushing mechanism 3 can push the magnetic mineral particles forward along the material trough 4.

[0076] Step (2): Driven by the pushing mechanism 3, the magnetic separation mechanism 5 adsorbs magnetic mineral particles with different magnetic forces in the trough 4 by continuous rotation;

[0077] Step (3): The scraping component 6 then continuously scrapes and separates the magnetic mineral particles adsorbed by the magnetic separation mechanism 5, and the guiding component 7 guides and classifies the materials.

[0078] Step (4): The water washing mechanism 8 can filter and collect the waste material in the material tank 4 through water flow, while the air blowing mechanism 9 can filter and adsorb dust and impurities in the outer shell 1.

[0079] Working principle:

[0080] Step (1): Pour the magnetic mineral particles into the material box 2. The magnetic mineral particles enter the material trough 4 through the discharge pipe 10. The output shaft of the motor 91 drives the rotating tube 31 to rotate through the meshing of the driving wheel 17 and the driven wheel 18. The rotating tube 31 pushes the magnetic mineral particles forward along the material trough 4 through the spiral blades 32.

[0081] Step (2): When the magnetic mineral particles move forward along the feed trough 4, the distance between the sleeve 51 and the magnetic mineral particles in the feed trough 4 decreases from far to near. When the magnet 52 in the groove 11 moves to the top of the feed trough 4 with the rotation of the sleeve 51, the magnetic mineral particles with stronger magnetism are attracted to the magnet 52 at the opening of the sleeve 51. As the magnetic mineral particles move forward along the feed trough 4, the weaker the magnetic particles are attracted to the magnet 52 on the inner end face of the sleeve 51. At the same time, as the sleeve 51 rotates, the magnetic mineral particles can be evenly distributed on the magnet 52 in the groove 11.

[0082] Step (3): When the sleeve 51 rotates, the scraper 62 scrapes off the magnetic particles on the magnet 52. The magnetic particles are discharged into the guide assembly 7 through the strip opening 12. Magnetic particles of different magnetic properties are discharged downward along the strip opening 12 in sequence. The material distribution trough 72 separates and discharges the magnetic particles of different magnetic properties, so that magnetic particles of different magnetic properties can be screened and collected. When the telescopic drive 534 can drive the sleeve 51 to slide along the rotating shaft 531, the sleeve 51 moves closer to or away from the material trough 4 along the axial direction, so that the adsorption range of the sleeve 51 on the magnetic particles can be adjusted, thereby adjusting the screening range of the magnetic particles.

[0083] Step (4): The water pump 81 draws water out of the filter box 83, and then the water flows through the connecting pipe 82 to the rotating pipe 31. The rotating pipe 31 continues to rotate, and the water flows through the water outlet 13 to the material tank 4, thereby flushing the impurities to the filter box 83. Then the impurities are filtered through the filter screen 16, and the cycle repeats.

[0084] The spread of water is increased by the rotating pipe 31, so that the water flows down the side wall of the trough 4, and the magnetic mineral particles adhering to the side wall of the trough 4 are washed down, effectively cleaning the inner side wall of the trough 4. When the water reaches the inlet 15, since the water does not flow horizontally along the trough 4, the water also enters the inlet 15 from top to bottom along the side wall of the trough 4, which produces a certain mixing effect and a certain impact effect. This can prevent the inlet 15 from being blocked and improve the screening accuracy of magnetic particles.

[0085] In the air intake mechanism 9, the motor 91 drives the fan blade 92 to rotate, and the fan blade 92 generates suction to draw the air out of the outer casing 1. The filter screen 93 filters and adsorbs air impurities, further improving the screening accuracy of magnetic particles.

[0086] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

[0087] 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. A high-precision magnetic separator comprising a housing (1) to which a material box (2) is connected, characterized in that, Also include: Pushing mechanism (3), rotatingly connected with the shell (1), one side of the pushing mechanism (3) is provided with a chute (4), the chute (4) is fixedly connected with the inner wall of the shell (1), the chute (4) is communicated with the discharge pipe (10), the discharge pipe (10) is opposite to the chute (4), the pushing mechanism (3) can push the magnetic ore along the chute (4) forward; The chute (4) is rotatably connected with a magnetic separation mechanism (5), the magnetic separation mechanism (5) is in transmission connection with the pushing mechanism (3), under the driving of the pushing mechanism (3), the magnetic separation mechanism (5) continuously rotates to adsorb the magnetic ore with different magnetic force in the chute (4); The bottom end surface of the chute (4) is provided with a scraping assembly (6), the scraping assembly (6) is used for continuously scraping and separating the magnetic ore adsorbed by the magnetic separation mechanism (5), one side of the scraping assembly (6) is provided with a material guiding assembly (7), the material guiding assembly (7) can guide and classify the material; The water washing mechanism (8) is arranged between the pushing mechanism (3) and the chute (4), the water washing mechanism (8) can filter and collect the waste in the chute (4) through water flow; One side of the pushing mechanism (3) is provided with an air guiding mechanism (9), the air guiding mechanism (9) can filter and adsorb the dust and impurities in the shell (1); The pushing mechanism (3) comprises a rotating pipe (31) and a spiral blade (32), the rotating pipe (31) is rotatably connected with the shell (1), the spiral blade (32) is spirally arranged along the rotating pipe (31), and the spiral blade (32) is arranged in the chute (4); The magnetic separation mechanism (5) comprises a sleeve (51), a magnet (52) and a transmission assembly (53); The sleeve (51) is a circular truncated cone cylinder, the sleeve (51) is sleeved outside the chute (4), a plurality of grooves (11) are formed in the inner wall of the sleeve (51) in a fan shape, the magnet (52) is arranged in each groove (11), and a plurality of strip-shaped openings (12) are formed in the side wall of the sleeve (51); The transmission assembly (53) is used for driving the sleeve (51) to rotate, and the transmission assembly (53) can drive the sleeve (51) to slide horizontally; The transmission assembly (53) comprises a rotating shaft (531), a gear transmission pair (532), a fixed plate (533) and an extension driving member (534); The rotating shaft (531) is rotatably connected with the outer end surface of the chute (4), the axis line of the rotating shaft (531) coincides with the axis line of the chute (4), the rotating shaft (531) is connected with the rotating pipe (31) through the gear transmission pair (532), the sleeve (51) is slidably connected with the rotating shaft (531), the fixed plate (533) is fixedly connected with one end of the rotating shaft (531), and the extension driving member (534) is fixedly connected between the fixed plate (533) and the sleeve (51).

2. The high-precision magnetic separator according to claim 1, characterized in that The scraping assembly (6) comprises a guide seat (61) and a scraper (62), the guide seat (61) is fixedly connected with the outer end surface of the trough (4), the guide seat (61) is slidingly connected with a plurality of scrapers (62), each scraper (62) is inserted into a groove (11).

3. The high-precision magnetic separator according to claim 2, characterized in that The material guiding assembly (7) comprises a guide cylinder (71), a distribution trough (72) and a distribution pipe (73); The guide cylinder (71) is fixedly connected with the shell (1), a plurality of distribution troughs (72) are arranged in the guide cylinder (71), each distribution trough (72) faces a scraper (62), the distribution trough (72) is communicated with a distribution pipe (73), and the distribution pipe (73) is provided with a stop valve.

4. The high-precision magnetic separator according to claim 1, characterized in that The water washing mechanism (8) comprises a water pump (81), a connecting pipe (82) and a filter box (83); The water pump (81) is fixedly connected with the outer end surface of the shell (1), one end of the connecting pipe (82) is communicated with the water pump (81), the other end of the connecting pipe (82) is rotatably connected with the rotating pipe (31), the filter box (83) is communicated with the water inlet (15) of the trough (4), and a plurality of water outlets (13) are arranged on the rotating pipe (31) along the length direction. The filter box (83) is communicated with the water inlet of the water pump (81), a filter screen plate (16) is arranged in the filter box (83), and the filter screen plate (16) is arranged obliquely.

5. The high-precision magnetic separator according to claim 1, characterized in that The air guiding mechanism (9) comprises a motor (91), a fan blade (92) and a filter screen cylinder (93); The motor (91) is fixedly connected with the shell (1), a plurality of fan blades (92) are fixedly connected with the output shaft of the motor (91), a plurality of filter screen cylinders (93) are arranged on the side end surface of the shell (1), the filter screen cylinder (93) faces the sleeve (51), the output shaft of the motor (91) is fixedly connected with a driving wheel (17), the rotating pipe (31) is fixedly connected with a driven wheel (18), the driving wheel (17) is engaged with the driven wheel (18), and the upper end surface of the shell (1) is provided with an air inlet pipe (19).

6. The magnetic separation method of a high-precision magnetic separator according to any one of claims 1 to 5, characterized by, The method comprises the following steps: Step (1): the magnetic mineral particles are poured into the material box (2), the magnetic mineral particles enter the trough (4) through the discharge pipe (10), and then the pushing mechanism (3) can push the magnetic mineral particles along the trough (4) forward; Step (2): under the driving of the pushing mechanism (3), the magnetic separation mechanism (5) can continuously rotate to adsorb the magnetic mineral particles with different magnetic forces in the trough (4); Step (3): then the scraping assembly (6) continuously scrapes and separates the magnetic mineral particles adsorbed by the magnetic separation mechanism (5), and the material guiding assembly (7) guides and classifies the materials; Step (4): the water washing mechanism (8) can filter and collect the waste in the trough (4) through water flow, and the air guiding mechanism (9) can filter and adsorb the dust and impurities in the shell (1).

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