Wet type rotating magnetic field magnetic separator and method

Abstract

According to the wet-type rotating magnetic field magnetic separator and method, a separation barrel is fixedly arranged, a magnetic system is arranged in a rotating mode, the magnetic system is a circumferential magnetic system, the magnetic separation intensity and the continuity of separated materials are ensured, and strong magnetic minerals enter a magnetic separation tank from the side close to a concentrate collecting tank and are adsorbed to the surface of the separation barrel through the magnetic system; along with the rotation of the magnetic system, the strong magnetic minerals are attached to the surface of the separation barrel, the magnetic minerals are unloaded through the material guide plate and the continuous ore unloading water pipe under the action of the rotating magnetic field, tailings are discharged through the tailings discharging pipe under the action of water flow, and magnetic separation of the strong magnetic minerals is achieved. In the prior art, part of weakly magnetic minerals can be flushed down to return to the ore pulp again under the impact action of water flow when the ore pulp enters from the side of a feeding box, meanwhile, strong magnetic minerals cannot be completely removed and return to tailings, the recovery rate is low, and if the ore pulp is introduced by being close to the side of the feeding box, a magnetic system rotates anticlockwise to run, the ore pulp cannot be completely removed. If not, the guide plate needs to be arranged on the side of the feeding box, so that the concentrate recovery tank does not have enough space for installation.

Description

Technical Field

[0001] This invention belongs to the field of magnetic separation equipment, specifically a wet rotary magnetic separator and method. Background Technology

[0002] Traditional magnetic separators are screening devices used to remove iron powder and other pollutants from recycled powdery materials. They consist of nine main parts: a feed box, a tank, an assembly, a frame, a transmission system, a feed flushing system, a concentrate unloading device, a concentrate box, and a magnetic system adjustment system. After the slurry flows into the tank through the feed box, the mineral particles are loosely dispersed and enter the feeding area of ​​the tank under the action of the water flow from the feed spray pipe. Under the influence of the magnetic field, because the polarities of the magnetic poles are alternately arranged along the direction of rotation of the cylinder and remain stationary during operation, the magnetic mineral particles magnetically aggregate to form "magnetic clusters" or "magnetic chains." These "magnetic clusters" or "magnetic chains" are attracted to the magnetic poles by the magnetic force in the slurry and are thus adsorbed onto the cylinder. The "magnetic clusters" or "magnetic chains" adsorbed on the surface of the cylinder constitute the concentrate. Magnetic separators are widely used in resource recycling, timber industry, mining, kiln industry, chemical industry, food and other factories. They are suitable for wet 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 operations of 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 magnetic separation processes generally involve the interaction of magnetic force and gravity. In a magnetic field, the magnetic force on magnetic mineral particles is much greater than their own weight. Therefore, under the influence of the magnetic force, magnetic mineral particles are attracted from the slurry to the surface of the magnetic separator drum. The rotation of the drum transports the material to the unloading area, while non-magnetic mineral particles settle under gravity, thus completing the separation process. For some strongly magnetic particles, especially pure iron media, the force situation on the drum surface changes significantly. During use, the surface of the magnetic separator drum, due to direct contact with the minerals, becomes smooth, greatly reducing the friction between the drum and the material. Once strongly magnetic particles are adsorbed onto the drum surface, they are difficult to remove and can quickly cause destructive damage to the drum, rendering the equipment unusable. Most existing magnetic separators are semi-magnetic (e.g., CN103785528B), where the magnetic system is fixed and the drum rotates. During the operation of the magnetic separator, the rotation of the drum means that the drum needs to transmit torque, which requires increasing the mechanical strength of the drum. The most direct way is to increase the thickness of the drum skin. This approach not only increases the manufacturing difficulty of the drum skin, but also requires a significant increase in the amount of magnetic steel material used under the same magnetic field strength, greatly increasing the manufacturing cost of the equipment.

[0004] The drum bears the input torque of the motor. Drums are mostly made of rolled steel plates or cast non-metallic materials. For smaller equipment, there are no obvious disadvantages. However, with the increasing mining of lean ores and the growing demand for larger magnetic separation equipment, the drum diameter needs to be increased. However, this reduces the strength and makes the drum more prone to breakage when transmitting torque. The magnetic field strength needs to be higher, which requires the drum thickness to be as small as possible. However, this will reduce the strength of the drum, which is detrimental to the future development of larger magnetic separation equipment and higher magnetic field strength. Summary of the Invention

[0005] To solve the above-mentioned technical problems, the inventors, through practice and summarization, derived the technical solution of this invention, which adopts the following technical solution:

[0006] A wet rotary magnetic separator, comprising:

[0007] frame,

[0008] The feed box and concentrate collection box are installed on both sides of the frame, respectively.

[0009] The magnetic separation tank is fixed on the frame and is equipped with a liquid level arc plate and a tailings discharge pipe inside.

[0010] The sorting cylinder is fixedly arranged inside the magnetic separator.

[0011] The magnetic system is installed inside the sorting cylinder. The magnetic system is a circumferential magnetic system with a magnetic wrap angle of 360°.

[0012] The drive assembly is independently installed on one side of the frame and is used to drive the magnetic system to rotate relative to the sorting cylinder.

[0013] The ore unloading assembly is used to unload magnetic minerals from the surface of the sorting cylinder and send them into the concentrate collection box.

[0014] The slurry enters the magnetic separator through the feed box and enters the area between the liquid level plate and the separation cylinder from the side near the concentrate collection box. The tailings are discharged from the tailings discharge pipe at the tail end of the liquid level plate.

[0015] In the wet rotary magnetic separator, the magnetic separation tank includes a front separation tank plate, a rear separation tank plate, and a bottom separation tank plate, with the bottom separation tank plate fixed to the bottom of the frame by a support frame;

[0016] The top front side of the tailings discharge pipe is fixed to a partition plate, which is arranged between the front selection trough plate and the rear selection trough plate. The partition plate and the front selection trough plate form a slurry feeding channel.

[0017] The liquid level arc plate is distributed between the partition plate and the post-selection tank plate. The front side of the liquid level arc plate and the partition plate form the tailings outlet, and the rear side of the liquid level arc plate and the post-selection tank plate form the slurry separation inlet.

[0018] The liquid level arc plate, the inner wall of the post-selection tank plate, and the outer wall of the separation cylinder form the mineral processing area.

[0019] In the wet rotary magnetic separator, a flushing water pipe is installed between the front separation tank plate and the bottom separation tank plate.

[0020] In the wet rotary magnetic separator, the separation cylinder includes a cylinder skin, with reinforcing rings installed at both ends of the cylinder skin. Baffles are fixed on the reinforcing rings, and the front end of the baffles extends into the partition plate. Guide plates arranged in the opposite direction along the tangent are installed on the cylinder skin, with both ends of the guide plates fixed to the corresponding baffles. The guide plates are set at an angle downward to guide the concentrate into the concentrate collection box.

[0021] In the wet rotary magnetic separator, a support body is installed on the frame, and the support body is used to install the sorting cylinder;

[0022] The magnetic system includes a spindle, which is mounted on the frame via bearings. A support plate is mounted on the spindle, and magnetic poles are mounted on the support plate.

[0023] The drive assembly includes a servo motor and a small pulley. The output of the servo motor is driven by the small pulley and the large pulley installed at the end of the spindle.

[0024] In the wet rotary magnetic separator, the two ends of the main shaft are respectively fitted with ring components through bearings. Connecting plate one and connecting plate two are installed on the ring components. The two sets of connecting plates one are distributed on the outside of the sorting cylinder and extend to the magnetic separation tank. The free end of the connecting plate one is equipped with a staggered tooth structure. The staggered structure is used to open the magnetic clusters adsorbed on the surface of the sorting cylinder. The connecting plate two is arranged in the sorting cylinder. The free end of the connecting plate two extends to the position near the junction of the guide plate and the cylinder skin. The free end is equipped with a magnetic shielding arc plate. The magnetic shielding arc plate is arranged between the magnet and the sorting cylinder.

[0025] A driver is mounted on the frame, and the driver drives the ring component to reciprocate through a transmission structure.

[0026] In the wet rotary magnetic separator, toothed scraper 1 and toothed scraper 2, which can run along the direction parallel to the main shaft, are installed between the two sets of connecting plates 1. The toothed scraper 1 and toothed scraper 2 are staggered. Each of the two sets of connecting plates 1 has a movable plate independently set on the opposite side. One end of toothed scraper 1 and toothed scraper 2 passes through the connecting plate 1 and is connected to the corresponding movable plate. The other end is connected to the corresponding connecting plate 1 through an elastic body. An extrusion block is set in the magnetic separation tank. The extrusion block is located on the movement path of the movable plate. The extrusion block is a wedge-shaped block.

[0027] In the wet rotary magnetic separator, the unloading assembly includes an unloading water pipe installed on the separation cylinder. The unloading water pipe is located on the side away from the feed box and is laid obliquely downward toward the concentrate collection box.

[0028] A method for using a wet rotary magnetic separator, the steps of which are as follows:

[0029] Step 1: The slurry is pumped into the feed box by a conveying pump, and then sent into the magnetic separator through the slurry outlet at the bottom of the feed box.

[0030] Step 2: The slurry enters the bottom separation tank through the area between the pre-selection tank plate and the partition plate. The slurry is then dispersed by the flushing water pipe at that location and sent into the mineral processing area through the slurry separation inlet.

[0031] Step 3: The magnetic system rotates under the drive of the drive component. Magnetic minerals in the slurry are attracted to the surface of the cylinder by the magnetic flux of the magnetic system through the separation cylinder. The magnetic minerals move along the cylinder with the magnetic system. The tailings enter the tailings discharge pipe through the tailings outlet and are finally discharged. The magnetic minerals are attracted and pulled by the magnetic system until they reach the guide plate.

[0032] Step 4: Within the mineral processing area, the driver drives the ring component to oscillate back and forth. During the oscillation, it drives connecting plate one and connecting plate two to run synchronously. During the oscillation of connecting plate one, the extrusion block will act on the corresponding moving plate to move outward, driving the corresponding toothed scraper to run in the direction parallel to the main shaft. After passing the extrusion block, it will be reset under the action of the corresponding elastic body. The reciprocating staggered operation of the toothed scraper opens the magnetic clusters adsorbed on the surface of the cylinder skin. At the same time, the magnetic arc plate demagnetizes the magnetic minerals at the position of the guide plate. With the help of the unloading water pipe, the unloading operation of the concentrate is completed.

[0033] Compared with the prior art, the present invention has the following beneficial effects:

[0034] This invention employs a fixed arrangement of the sorting cylinder and a rotating arrangement of the magnetic system. The magnetic system is a circumferential magnetic system, ensuring the continuity of magnetic separation intensity and the separated materials. Strongly magnetic minerals enter the magnetic separation tank from the side closest to the concentrate collection tank and are adsorbed onto the surface of the sorting cylinder by the magnetic system. As the magnetic system rotates, the strongly magnetic minerals adhere to the surface of the sorting cylinder. Due to the action of the rotating magnetic field, the magnetic minerals are unloaded by the guide plate and the continuous discharge water pipe. The tailings are discharged through the tailings discharge pipe under the action of water flow, thus realizing the magnetic separation of strongly magnetic minerals. Compared to traditional methods where slurry enters from the side of the feed box, the impact of the water flow washes some weakly magnetic minerals off and back into the slurry, while strong magnetic minerals cannot be completely removed (the force of the magnetic field on strong magnetic materials is much greater than the force of the unloading water flow), and they also return to the tailings, resulting in a low recovery rate. Furthermore, if the slurry is introduced from the side close to the feed box and the magnetic system rotates counterclockwise, the guide plate will need to be installed on the side of the feed box, which will result in insufficient space to install the concentrate recovery tank.

[0035] This invention utilizes a reciprocating, oscillating, staggered-tooth structure within the magnetic separator to open magnetic clusters adsorbed on the cylinder surface. This opening occurs simultaneously in both the circumferential and axial directions, resulting in high efficiency in breaking down magnetic clusters and improving concentrate grade while ensuring recovery rate. Simultaneously, a magnetically insulating arc plate blocks the magnetic flux at the discharge point, thereby demagnetizing the magnetic minerals. This facilitates efficient unloading in conjunction with the unloading water flow. Simply using a water pipe would not guarantee effective unloading because the full magnetic wrap angle magnetic system used in this invention creates a dead zone at the guide plate cylinder surface during operation, making unloading ineffective with just the unloading water flow. Attached Figure Description

[0036] Figure 1 This is a cross-sectional view of the overall structure of Embodiment 1 of the present invention.

[0037] Figure 2 This is a side view of the overall structure of Embodiment 1 of the present invention.

[0038] Figure 3 This is a top view of the overall structure of Embodiment 1 of the present invention.

[0039] Figure 4 This is a structural diagram of the sorting cylinder of the present invention.

[0040] Figure 5 This is a cross-sectional view of the overall structure of Embodiment 2 of the present invention.

[0041] Figure 6 This is a side view of the overall structure of Embodiment 2 of the present invention.

[0042] Figure 7 for Figure 6 A magnified view of a portion of point A in the middle.

[0043] Figure 8 This is a schematic diagram of the staggered tooth structure of Embodiment 2 of the present invention.

[0044] Figure 9 This is a structural diagram of the elastomer and toothed scraper in Embodiment 2 of the present invention.

[0045] In the diagram: 10. Frame; 11. Support body; 20. Feed box; 30. Concentrate collection box; 40. Magnetic separation tank; 41. Liquid level arc plate; 42. Tailings discharge pipe; 43. Front separation tank plate; 44. Back separation tank plate; 45. Bottom separation tank plate; 46. Support frame; 47. Divider plate; 48. Flushing water pipe; 49. Extrusion block; 50. Separation cylinder; 51. Cylinder skin; 52. Reinforcing ring; 53. Baffle plate; 54. Guide plate; 60. Magnetic system; 70. Drive assembly; 71. Servo motor; 72. Small pulley; 73. Large pulley; 80. Unloading assembly; 90. Ring component; 91. Connecting plate one; 92. Connecting plate two; 93. Magnetic shielding arc plate; 94. Driver; 95. Toothed scraper one; 96. Toothed scraper two; 97. Moving plate; 98. Elastomer. Detailed Implementation

[0046] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0047] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0048] Example 1

[0049] like Figures 1 to 4 As shown, a wet rotary magnetic separator includes:

[0050] Rack 10,

[0051] The feed box 20 and the concentrate collection box 30 are respectively installed on both sides of the frame 10;

[0052] The magnetic separation tank 40 is fixed on the frame 10 and is equipped with a liquid level arc plate 41 and a tailings discharge pipe 42 inside.

[0053] The sorting cylinder 50 is fixedly arranged inside the magnetic separation tank 40;

[0054] Magnetic system 60 is installed inside the sorting cylinder 50. Magnetic system 60 is a circumferential magnetic system with a magnetic wrap angle of 360°.

[0055] The drive assembly 70 is independently arranged on one side of the frame 10 and is used to drive the magnetic system 60 to rotate relative to the sorting cylinder 50.

[0056] The unloading assembly 80 is used to unload magnetic minerals from the surface of the sorting cylinder 50 and send them into the concentrate collection box 30.

[0057] The slurry enters the magnetic separator 40 through the feed box 20, and enters the area between the liquid level arc plate 41 and the separation cylinder 50 from the side near the concentrate collection box 30. The tailings are discharged from the tail of the liquid level arc plate 41 through the tailings discharge pipe 42.

[0058] The magnetic separation tank 40 includes a front separation tank plate 43, a rear separation tank plate 44 and a bottom separation tank plate 45, with the bottom separation tank plate 45 fixed to the bottom of the frame 10 by a support frame 46.

[0059] The top front side of the tailings discharge pipe 42 is fixed to the partition plate 47. The partition plate 47 is arranged between the front selection trough plate 43 and the rear selection trough plate 44. The partition plate 47 and the front selection trough plate 43 form a slurry feeding channel.

[0060] The liquid level arc plate 41 is distributed between the partition plate 47 and the post-selection tank plate 44. The front side of the liquid level arc plate 41 and the partition plate 47 form a tailings outlet, and the rear side of the liquid level arc plate 41 and the post-selection tank plate 44 form a slurry separation inlet.

[0061] The liquid level arc plate 41, the inner wall of the post-selection trough plate 44, and the outer wall of the sorting cylinder 50 form a mineral processing area.

[0062] A flushing water pipe 48 is installed between the front selection trough plate 43 and the bottom selection trough plate 45.

[0063] The sorting cylinder 50 includes a cylinder skin 51, with reinforcing rings 52 installed at both ends of the cylinder skin 51. Baffle plates 53 are fixed on the reinforcing rings 52, and the front end of the baffle plates 53 extends into the partition plate 47. A guide plate 54 arranged in the opposite direction along the tangent is installed on the cylinder skin 51. The two ends of the guide plate 54 are respectively fixed on the corresponding baffle plates 53. The guide plate 54 is set obliquely downward to guide the concentrate into the concentrate collection box 30.

[0064] A support body 11 is installed on the frame 10, and the support body 11 is used to install the sorting cylinder 50.

[0065] The magnetic system 60 includes a spindle, which is mounted on the frame 10 via bearings. A support plate is mounted on the spindle, and magnets are mounted on the support plate.

[0066] The drive assembly 70 includes a servo motor 71 and a small pulley 72. The output end of the servo motor 71 forms a transmission connection with the small pulley 72 and the large pulley 73 installed at the end of the spindle to complete the drive of the magnetic system 60.

[0067] The unloading assembly 80 includes an unloading water pipe installed on the sorting cylinder 50. The unloading water pipe is laid on the side away from the feed box 20 and is laid obliquely downwards towards the concentrate collection box 30.

[0068] In actual production, the slurry is pumped into the feed box 20 and then into the magnetic separation tank 40 through the slurry outlet below the feed box 20. The slurry enters the area between the pre-selection tank plate 43 and the partition plate 47 and enters the bottom selection tank plate 45. The slurry is dispersed by the flushing water pipe 48 at this location and sent into the mineral processing area through the slurry separation inlet. The magnetic minerals are attracted to the surface of the drum skin 51 by the magnetic attraction of the magnetic system 60. The magnetic system 60 rotates under the drive component 70. The magnetic minerals in the slurry are attracted to the surface of the drum skin 51 by the magnetic flux of the magnetic system 60 through the separation drum 50. The magnetic minerals move along the drum skin 51 with the magnetic system 60. The tailings enter the tailings discharge pipe 42 through the tailings outlet and are finally discharged. The magnetic minerals are attracted and pulled by the magnetic system 60 until they reach the guide plate 54. Finally, the magnetic minerals are sent into the concentrate collection box 30 with the help of the unloading water pipe.

[0069] Example 2

[0070] In Example 1, in order to improve the grade and efficiency of concentrate recovery and to solve the problem of dead zones in the unloading area that easily occur in the above-mentioned scheme, such as... Figures 5 to 9 As shown, the two ends of the main shaft are respectively fitted with ring parts 90 through bearings. Connecting plate 91 and connecting plate 92 are installed on the ring parts 90. The two sets of connecting plates 91 are distributed on the outside of the sorting cylinder 50 and extend to the magnetic separation tank 40 at their free ends. The free ends of the connecting plates 91 are equipped with staggered tooth structures. The staggered structure is used to open the magnetic clusters adsorbed on the surface of the sorting cylinder 50. The connecting plate 92 is arranged inside the sorting cylinder 50. The free ends of the connecting plates 92 extend to the position near the joint of the guide plate 54 and the cylinder skin 51. The free ends are equipped with magnetic shielding arc plates 93. The magnetic shielding arc plates 93 are arranged between the magnet and the sorting cylinder 50.

[0071] A driver 94 is installed on the frame 10. The driver 94 drives the ring component 90 to reciprocate through a transmission structure. The transmission structure can be a worm gear transmission structure.

[0072] Toothed scraper 1 95 and toothed scraper 2 96, which can move along the direction parallel to the main shaft, are installed between the two sets of connecting plates 1 91. Toothed scraper 1 95 and toothed scraper 2 96 are staggered. Each of the two sets of connecting plates 1 91 has a movable plate 97 independently provided on the opposite side. One end of toothed scraper 1 95 and toothed scraper 2 96 passes through the connecting plate 1 91 and is connected to the corresponding movable plate 97. The other end is connected to the corresponding connecting plate 1 91 through an elastic body 98. An extrusion block 49 is provided in the magnetic separation tank 40. The extrusion block 49 is located on the movement path of the movable plate 97. The extrusion block 49 is a wedge-shaped block.

[0073] In practical applications, within the mineral processing area, the driver 94 drives the ring component 90 to reciprocate within the mineral processing area via a transmission structure. Simultaneously, the connecting plate 1 91 and connecting plate 2 92 drive the toothed scraper 1 95 and toothed scraper 2 96 to move synchronously, as well as the magnetic arc plate 93 to move synchronously. After the toothed scraper moves the plate 97 under the action of the corresponding extrusion block 49, it moves axially to destroy the magnetic clusters on the surface of the cylinder skin 51. The non-magnetic minerals inside the magnetic clusters will automatically fall off, thereby improving the recovery grade. The magnetic material adheres to the surface of the cylinder skin 51 and enters the position of the guide plate 54 as the magnetic system 60 rotates. The magnetic arc plate 93 on the inner side of the cylinder skin 51 at the position of the guide plate 54 is used to demagnetize the position, and the efficient unloading process is completed in conjunction with the unloading water pipe.

[0074] A method for using a wet rotary magnetic separator, the steps of which are as follows:

[0075] Step 1: The slurry is pumped into the feed box 20 by a conveying pump, and then fed into the magnetic separator 40 through the slurry outlet below the feed box 20.

[0076] Step 2: The slurry enters the bottom separation tank 45 through the area between the pre-selection tank plate 43 and the partition plate 47. The slurry is dispersed by the flushing water pipe 48 at that location and sent into the mineral processing area through the slurry separation inlet.

[0077] Step 3: The magnetic system 60 rotates under the drive of the drive component 70. Magnetic minerals in the slurry are attracted to the surface of the cylinder skin 51 by the magnetic flux of the magnetic system 60 through the separation cylinder 50. The magnetic minerals move along the cylinder skin 51 with the magnetic system 60. The tailings enter the tailings discharge pipe 42 through the tailings outlet and are finally discharged. The magnetic minerals are attracted and pulled by the magnetic system 60 until they reach the position of the guide plate 54.

[0078] Step 4: Within the mineral processing area, the driver 94 drives the ring component 90 to reciprocate. During the reciprocating motion, the connecting plate 1 91 and the connecting plate 2 92 move synchronously. During the reciprocating motion of the connecting plate 1 91, the extrusion block 49 will cause the corresponding moving plate 97 to move outward, driving the corresponding toothed scraper to move along the direction parallel to the main shaft. After passing the extrusion block 49, the scraper will be reset under the action of the corresponding elastic body 98. The reciprocating and staggered operation of the toothed scraper opens the magnetic clusters adsorbed on the surface of the cylinder skin 51. At the same time, the magnetic arc plate 93 demagnetizes the magnetic minerals at the position of the guide plate 54. The unloading operation of the concentrate is completed in conjunction with the action of the unloading water pipe.

[0079] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. The substitutions may be replacements of some structures, devices, or method steps, or they may be complete technical solutions. Equivalent substitutions or modifications made to the technical solutions and inventive concepts of the present invention should all be covered within the scope of protection of the present invention.

Claims

1. A wet rotary magnetic separator, characterized in that, include: Rack (10) The feed box (20) and the concentrate collection box (30) are respectively installed on both sides of the frame (10); The magnetic separation tank (40) is fixed on the frame (10) and has a liquid level arc plate (41) and a tailings discharge pipe (42) inside. The sorting cylinder (50) is fixedly arranged inside the magnetic separation tank (40); Magnetic system (60) is installed inside the sorting cylinder (50). The magnetic system (60) is a circumferential magnetic system (60) with a magnetic wrap angle of 360°. The drive assembly (70) is independently arranged on one side of the frame (10) and is used to drive the magnetic system (60) to rotate relative to the sorting cylinder (50). The unloading assembly (80) is used to unload magnetic minerals from the surface of the sorting cylinder (50) and send them into the concentrate collection box (30); The slurry enters the magnetic separator (40) through the feed box (20), and enters the area between the liquid level arc plate (41) and the separation cylinder (50) from the side near the concentrate collection box (30). The tailings are discharged from the tail of the liquid level arc plate (41) through the tailings discharge pipe (42).

2. The wet rotary magnetic separator according to claim 1, characterized in that, The magnetic separation tank (40) includes a front separation tank plate (43), a rear separation tank plate (44) and a bottom separation tank plate (45), with the bottom separation tank plate (45) fixed to the bottom of the frame (10) by a support frame (46); The top front side of the tailings discharge pipe (42) is fixed to the partition plate (47). The partition plate (47) is arranged between the front selection trough plate (43) and the rear selection trough plate (44). The partition plate (47) and the front selection trough plate (43) form a slurry feeding channel. The liquid level arc plate (41) is distributed between the partition plate (47) and the post-selection tank plate (44). The front side of the liquid level arc plate (41) and the partition plate (47) form the tailings outlet, and the rear side of the liquid level arc plate (41) and the post-selection tank plate (44) form the slurry separation inlet. The inner wall of the liquid level arc plate (41), the rear selection trough plate (44), and the outer wall of the sorting cylinder (50) form a mineral processing area.

3. A wet rotary magnetic separator according to claim 2, characterized in that, A flushing water pipe (48) is installed between the front selection trough plate (43) and the bottom selection trough plate (45).

4. A wet rotary magnetic separator according to claim 2, characterized in that, The sorting cylinder (50) includes a cylinder skin (51), with reinforcing rings (52) installed at both ends of the cylinder skin (51). A baffle plate (53) is fixed on the reinforcing ring (52). The front end of the baffle plate (53) extends into the partition plate (47). A guide plate (54) arranged in the opposite direction along the tangent is installed on the cylinder skin (51). The two ends of the guide plate (54) are respectively fixed on the corresponding baffle plate (53). The guide plate (54) is set obliquely downward to guide the concentrate into the concentrate collection box (30).

5. A wet rotary magnetic separator according to claim 4, characterized in that, A support body (11) is installed on the frame (10), and the support body (11) is used to install the sorting cylinder (50). The magnetic system (60) includes a spindle, which is mounted on the frame (10) via bearings. A support plate is mounted on the spindle, and magnetic poles are mounted on the support plate. The drive assembly (70) includes a servo motor (71) and a small pulley (72). The output end of the servo motor (71) forms a transmission connection with the small pulley (72) and the large pulley (73) installed at the end of the spindle to complete the drive of the magnetic system (60).

6. A wet rotary magnetic separator according to claim 5, characterized in that, The two ends of the main shaft are respectively fitted with ring parts (90) through bearings. Connecting plate one (91) and connecting plate two (92) are installed on the ring parts (90). The two sets of connecting plates one (91) are distributed on the outside of the sorting cylinder (50) and the free end extends into the magnetic separation tank (40). The free end of the connecting plate one (91) is equipped with a staggered tooth structure. The staggered structure is used to open the magnetic clusters adsorbed on the surface of the sorting cylinder (50). The connecting plate two (92) is arranged inside the sorting cylinder (50). The free end of the connecting plate two (92) extends to the position close to the joint of the guide plate (54) and the cylinder skin (51). The free end is equipped with a magnetic shielding arc plate (93). The magnetic shielding arc plate (93) is arranged between the magnet and the sorting cylinder (50). A driver (94) is installed on the frame (10), and the driver (94) drives the ring component (90) to reciprocate through the transmission structure.

7. A wet rotary magnetic separator according to claim 6, characterized in that, Toothed scraper 1 (95) and toothed scraper 2 (96) that can run along the parallel main shaft direction are installed between the two sets of connecting plates 1 (91). Toothed scraper 1 (95) and toothed scraper 2 (96) are staggered. Each of the two sets of connecting plates 1 (91) has a movable plate (97) independently set on the opposite side. One end of toothed scraper 1 (95) and toothed scraper 2 (96) passes through connecting plate 1 (91) and is connected to the corresponding movable plate (97). The other end is connected to the corresponding connecting plate 1 (91) through elastic body (98). An extrusion block (49) is set in the magnetic separation tank (40). The extrusion block (49) is located on the movement path of the movable plate (97). The extrusion block (49) is a wedge-shaped block.

8. A wet rotary magnetic separator according to claim 7, characterized in that, The unloading assembly (80) includes an unloading water pipe installed on the sorting cylinder (50), which is located on the side away from the feed box (20) and is laid obliquely downward toward the concentrate collection box (30).

9. A method of using the wet rotary magnetic separator as described in claim 8, characterized in that, The steps are as follows: Step 1: The slurry is pumped into the feed box (20) by a conveying pump, and then sent into the magnetic separator (40) through the slurry outlet below the feed box (20); Step 2: The slurry enters the bottom separation tank (45) through the area between the pre-selection tank plate (43) and the partition plate (47). The slurry is dispersed by the flushing water pipe (48) at that location and sent into the mineral processing area through the slurry separation inlet. Step 3: The magnetic system (60) rotates under the drive of the drive component (70). Magnetic minerals in the slurry are attracted to the surface of the cylinder skin (51) by the magnetic flux of the separation cylinder (50) through the magnetic system (60). The magnetic minerals move along the cylinder skin (51) with the magnetic system (60). The tailings enter the tailings discharge pipe (42) through the tailings outlet and are finally discharged. The magnetic minerals are attracted and pulled by the magnetic system (60) until they reach the position of the guide plate (54). Step 4: In the mineral processing area, the driver (94) drives the ring component (90) to swing back and forth. During the swing, the connecting plate one (91) and the connecting plate two (92) run synchronously. During the swing, the extrusion block (49) will act on the corresponding moving plate (97) to move outward, and drive the corresponding toothed scraper to run in the direction parallel to the main shaft. After passing the extrusion block (49), it will be reset under the action of the corresponding elastic body (98). The toothed scraper reciprocates and crosses to open the magnetic clusters adsorbed on the surface of the cylinder skin (51). At the same time, the magnetic arc plate (93) demagnetizes the magnetic minerals at the position of the guide plate (54). The unloading operation of the concentrate is completed in conjunction with the action of the unloading water pipe.

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