A stirring and scattering structure and a magnetic separator comprising the same

Abstract

The application belongs to the technical field of graphite powder processing equipment, and particularly relates to a stirring and dispersing structure and a magnetic separator comprising the same. The stirring and dispersing structure comprises a driving shaft, a slot-hole combined mounting plate unit provided with the driving shaft, a limiting stirring frame body unit arranged on the driving shaft and clamped at the upper end of the slot-hole combined mounting plate unit, an electromagnet cylinder unit inserted and arranged on the slot-hole combined mounting plate unit and located between the driving shaft and the limiting stirring frame body unit, and a suspension end cover unit arranged at the upper end position of the electromagnet cylinder unit and used for intercepting accumulated iron filings on the lower surface of the slot-hole combined mounting plate unit by lifting the electromagnet cylinder unit upwards.

Description

Technical Field

[0001] This application belongs to the technical field of graphite powder processing equipment, and particularly relates to a stirring and dispersing structure, and a magnetic separator including the structure. Background Technology

[0002] Generally speaking, a magnetic separator refers to a type of screening equipment that can adsorb and remove iron filings from powdery or granular materials.

[0003] On the other hand, graphite powder can be used as a common negative electrode material for lithium-ion batteries. Its processing methods mainly include crushing, purification, grinding, and post-processing. During purification and grinding steps, iron filings may be mixed into the graphite powder, and the aforementioned iron filings removal operation can be regarded as part of the post-processing steps.

[0004] One common method for removing iron filings from graphite powder is wet magnetic separation. This involves using a magnetic separator to agitate the graphite powder slurry to adsorb the iron filings, ensuring effective removal. Without this agitation and dispersing mechanism, the graphite powder tends to agglomerate, trapping the iron filings and significantly reducing the removal rate.

[0005] Existing common magnetic separators mainly consist of a magnetic component, a stirring component, and a housing. The graphite powder slurry is temporarily held inside the housing, and by activating the stirring component, basic iron filings removal can be achieved.

[0006] Furthermore, existing structurally improved magnetic separators primarily focus on optimizing the stirring effect. For example, Chinese utility model patent CN207493879U, with an authorization announcement date of June 15, 2018, discloses a wet magnetic separation system for removing iron from graphite negative electrode materials. Its main structural components include: a slide rail, a movable frame, a drive motor, a stirrer, a permanent magnet block, a limit switch, a rack, and gears.

[0007] The wet magnetic separation iron removal system in this utility model patent has the following functions and advantages: it uses a stirrer to stir the mixture of graphite negative electrode material and water, which makes the graphite negative electrode material easier to disperse evenly in the medium water, effectively avoiding the phenomenon that dry powder particles agglomerate and laminate, thus encapsulating iron impurities and making them difficult to remove.

[0008] However, when performing actual demagnetization operations, this system still suffers from at least the following practical and inefficient problems, specifically: First, the iron filings accumulated on its permanent magnet block structure can generally only be removed in small amounts and multiple times by manual brushing or scraping, which is quite troublesome and inefficient. Secondly, the lower end of its stirrer structure lacks the necessary limiting function, so it is relatively easy to swing when rotating. Moreover, the permanent magnet is located near the stirrer, so the stirrer itself is easy to break, and the permanent magnet is easy to be damaged by the stirrer. Utility Model Content

[0009] This application provides a stirring and dispersing structure, which aims to solve the technical problem of making the dispersing and demagnetizing of graphite powder slurry safer and more efficient.

[0010] In addition, this application also provides a magnetic separator including the above-described stirring and dispersing structure.

[0011] The technical solution adopted by this application to solve the above problems is: a stirring and dispersing structure, including a drive shaft, a slotted mounting plate unit with the drive shaft, a limiting stirring frame unit disposed on the drive shaft and whose upper end engages with the slotted mounting plate unit, an electromagnet cylinder unit inserted into the slotted mounting plate unit and located between the drive shaft and the limiting stirring frame unit, and a suspension end cap unit disposed at the upper end of the electromagnet cylinder unit and used to trap accumulated iron filings on the lower surface of the slotted mounting plate unit by lifting the electromagnet cylinder unit upward.

[0012] A further preferred technical solution is that the slotted mounting plate unit includes a horizontal plate, a bearing mounting hole disposed on the horizontal plate for mounting the drive shaft, an insertion opening disposed on the horizontal plate for mounting the electromagnet cylinder unit, and an annular slot disposed on the lower surface of the horizontal plate for inserting the limiting stirring frame unit.

[0013] A further preferred technical solution is that the limiting stirring frame unit includes a radial plate disposed on the lower end face of the drive shaft, and a stirring vertical rod disposed on the radial plate with its upper end inserted into the annular slot.

[0014] A further preferred technical solution is that the electromagnet cylinder unit includes a magnetically conductive cylinder disposed on the insertion opening, an electromagnet disposed in the magnetically conductive cylinder, a bottom sealing plate disposed on the magnetically conductive cylinder, and a limiting ring disposed on the outer side of the magnetically conductive cylinder and used to engage the upper surface of the horizontal plate.

[0015] A further preferred technical solution is that the suspension end cap unit includes an internally threaded cap located at the upper end of the magnetic cylinder, and a suspension block with holes located on the upper surface of the internally threaded cap.

[0016] A further preferred technical solution is that the slotted mounting plate unit further includes an annular engaging groove and a sliding limiting groove disposed on the lower surface of the horizontal plate and used selectively, as well as a screw hole block disposed on the upper surface of the horizontal plate and used to drive the horizontal plate in a sliding manner.

[0017] A further preferred technical solution is that the slotted mounting plate unit further includes a slurry inlet and a second perforated block for suspension on the horizontal plate.

[0018] A further preferred technical solution is that the limiting stirring frame unit further includes a limiting insert rod disposed on the lower surface of the radial plate, and a transverse rod disposed on the drive shaft and / or the stirring vertical rod.

[0019] A further preferred technical solution is that the electromagnet cylinder unit further includes an I-shaped support frame disposed inside the magnetically conductive cylinder and located between two adjacent electromagnets.

[0020] A magnetic separator including the above-mentioned stirring and dispersing structure: the structure further includes a circular barrel body supporting the horizontal plate at the upper end, a feed inlet provided on the annular plate of the circular barrel body, a discharge outlet provided on the bottom plate of the circular barrel body, and a limiting cylinder provided on the inner bottom surface of the circular barrel body for fitting the limiting rod.

[0021] A magnetic separator including the above-mentioned stirring and dispersing structure: the structure also includes a cuboid open shell that supports the horizontal plate at the upper end, and a reciprocating motor mounting base disposed on the cuboid open shell and used to connect the screw hole block.

[0022] The beneficial effects of this application include at least the following five points.

[0023] First, when the stirring and dispersing structure is used to remove iron filings, the electromagnet cylinder unit can be lifted upwards so that the slotted mounting plate unit scrapes against the electromagnet cylinder unit, thereby concentrating the iron filings on the lower surface of the slotted mounting plate unit, achieving a simple and efficient iron filings removal effect.

[0024] Secondly, for the limiting type stirring frame unit, its upper end engages with the slotted mounting plate unit, thus ensuring stable rotation and preventing swaying without affecting the rotational stirring effect, ultimately protecting itself and the electromagnet cylinder unit.

[0025] Third, for the electromagnet cylinder unit, it can provide a relatively large and stable effective magnetic area, and has sufficient installation stability. It is not easy to bump into the rotating limit stirring frame unit, and it also has a convenient and flexible lifting function, which is conducive to the rapid removal of iron filings.

[0026] Fourth, this mixing and dispersing structure can be fixedly installed on the circular outer shell of a magnetic separator, or it can be slidably installed on the rectangular outer shell of another type of magnetic separator, thus making it relatively practical.

[0027] Fifth, there is a type of magnetic separator whose structure includes a circular barrel, which has the dual advantages of relatively more stable rotary stirring action and flexible feeding method; another type of magnetic separator whose structure includes a rectangular open shell and a reciprocating motor, which allows the above-mentioned stirring and dispersing structure to rotate and move at the same time, thereby achieving a demagnetizing and stirring effect with a relatively large effective area. Attached Figure Description

[0028] Figure 1 This is a schematic diagram showing the location of the electromagnet cylinder unit in this application.

[0029] Figure 2 This is a structural schematic diagram of the slotted mounting plate unit in this application.

[0030] Figure 3 This is a structural schematic diagram of the limiting-type stirring frame unit in this application.

[0031] Figure 4 This is a schematic diagram showing the location of the suspension end cap unit in this application.

[0032] Figure 5 This is a schematic diagram of the location and structure of the suspension end cap unit in this application.

[0033] Figure 6 This is a schematic diagram showing the position and shape of the annular engaging groove and the sliding limiting groove in this application.

[0034] Figure 7 This is a schematic diagram illustrating the screw connection method of the limit ring in this application.

[0035] Figure 8 This is a schematic diagram of the I-beam support frame in this application.

[0036] Figure 9 This is a schematic diagram showing the position of the limiting cylinder in this application.

[0037] Figure 10 This is a schematic diagram showing the position and shape of the reciprocating motor mounting base in this application.

[0038] The meanings of the markings in the diagram are as follows.

[0039] Adsorbing iron filings (a), accumulating iron filings (b); Drive shaft 11; Slotted mounting plate unit 1, limiting mixing frame unit 2, electromagnet cylinder unit 3, suspension end cap unit 4; Horizontal plate 101, bearing mounting hole 102, insertion hole 103, annular groove 104, annular locking groove 105, sliding limiting groove 106, screw hole block 107, slurry inlet 108, second hole block for suspension 109. Radial plate 201, vertical stirring rod 202, limiting rod 203, horizontal rod 204; Magnetic guide cylinder 301, electromagnet 302, bottom sealing plate 303, limiting ring 304, I-shaped support frame 305; Internal threaded cover 401, suspension block with holes 402; 5. Circular barrel body; 6. Inlet; 7. Outlet; 8. Limiting cylinder; 9. Rectangular open outer shell; 10. Reciprocating motor mounting base. Detailed Implementation

[0040] The following description is merely a preferred embodiment of this application and is not intended to limit the scope of this application.

[0041] like Figures 1-10 As shown, a stirring and dispersing structure includes a drive shaft 11, a slotted mounting plate unit 1 with the drive shaft 11, a limiting stirring frame unit 2 disposed on the drive shaft 11 and whose upper end engages with the slotted mounting plate unit 1, an electromagnet cylinder unit 3 inserted into the slotted mounting plate unit 1 and located between the drive shaft 11 and the limiting stirring frame unit 2, and a suspension end cap unit 4 disposed at the upper end of the electromagnet cylinder unit 3 and used to trap accumulated iron filings on the lower surface of the slotted mounting plate unit 1 by lifting the electromagnet cylinder unit 3 upwards.

[0042] In this embodiment, the main material of the stirring and dispersing structure is engineering plastic or aluminum alloy, thereby providing sufficient structural strength and non-magnetic properties to prevent iron filings from adsorbing and sticking to the slotted mounting plate unit 1 and the limiting stirring frame unit 2.

[0043] The electromagnet cylinder unit 3 and the suspension end cap unit 4 are arranged in pairs, and the number of electromagnet cylinder units 3 is 2-4. The overall shape of the limiting stirring frame unit 2 is "U-shaped". The upper ends of its left and right sides engage with the slotted mounting plate unit 1, and the lower end of its middle part is connected to the drive shaft 11, thereby achieving a relatively stable rotational stirring effect and making it less prone to lateral swaying. Furthermore, the method of using the electromagnet cylinder unit 3 in conjunction with the suspension end cap unit 4 mainly includes the following steps in sequence: S1. After the graphite powder slurry completes the demagnetization operation, first turn off the drive motor on the drive shaft 11, and then discharge the slurry outward. S2. Cut off the power supply to the electromagnet cylinder unit 3. The magnetic field disappears. At this time, the iron filings on it will not fall off significantly due to the wetting effect. Therefore, it is necessary to actively remove the iron filings. S3. Manually hold the suspension end cap unit 4 and lift the electromagnet cylinder unit 3, or connect the suspension end cap unit 4 with a hook and then electrically lift the electromagnet cylinder unit 3, so that the adsorbed iron filings a on the outer surface of the electromagnet cylinder unit 3 are intercepted by the slotted combined mounting plate unit 1, forming accumulated iron filings b. S4. If the slotted mounting plate unit 1 is removed, the accumulated iron filings b can be scraped off and removed. The iron filings that fall off the bottom surface of the magnetic separator can be rinsed off and then reinstalled into the electromagnet cylinder unit 3. Alternatively, the slotted mounting plate unit 1 can be left in place, and all the accumulated iron filings b can be rinsed off directly, causing them to fall onto the bottom surface of the magnetic separator. Finally, they can be rinsed off together. Both methods have outstanding efficiency in iron filings removal.

[0044] The slotted mounting plate unit 1 includes a horizontal plate 101, a bearing mounting hole 102 disposed on the horizontal plate 101 for mounting the drive shaft 11, an insertion opening 103 disposed on the horizontal plate 101 for mounting the electromagnet cylinder unit 3, and an annular slot 104 disposed on the lower surface of the horizontal plate 101 for inserting the limiting stirring frame unit 2.

[0045] In this embodiment, the horizontal plate 101 is circular in shape, and the bearing mounting hole 102 is provided with an angular contact ball bearing. This bearing can both radially limit the drive shaft 11 and withstand a certain axial load generated by the drive shaft 11.

[0046] The insertion opening 103 is a circular hole located radially inside the annular slot 104.

[0047] The limiting stirring frame unit 2 includes a radial plate 201 disposed on the lower end face of the drive shaft 11, and a stirring vertical rod 202 disposed on the radial plate 201 and inserted into the annular slot 104 at its upper end.

[0048] In this embodiment, the drive shaft 11, the radial plate 201, and the stirring vertical rod 202 are integrally formed. The upper end of the stirring vertical rod 202 or the annular slot 104 is provided with ball bearings, thereby reducing the relative friction between the two and indirectly improving the efficiency of the entire demagnetization operation.

[0049] The radial plate 201 is rectangular in shape, and the vertical stirring rod 202 is round.

[0050] The electromagnet cylinder unit 3 includes a magnetically conductive cylinder 301 disposed on the insertion opening 103, an electromagnet 302 disposed inside the magnetically conductive cylinder 301, a bottom sealing plate 303 disposed on the magnetically conductive cylinder 301, and a limiting ring 304 disposed on the outer side of the magnetically conductive cylinder 301 and used to engage the upper surface of the horizontal plate 101.

[0051] In this embodiment, the magnetically conductive cylinder 301, or its lower part that needs to be immersed in the slurry, is made of, for example, martensitic stainless steel, which has the dual advantages of being rust-resistant and having high magnetic permeability. The main function of the magnetically conductive cylinder 301 is: The "point-like" magnetic positions provided by several electromagnets 302 are transformed into "planar" magnetic regions that are effective on the outer ring surface of the magnetic cylinder 301. Although it may be difficult to completely and evenly distribute the magnetic field strength, the above-mentioned "planar" magnetic attraction effect can still improve the degree and efficiency of adsorption and removal of iron filings.

[0052] On the other hand, both the bottom sealing plate 303 and the limiting ring 304 are made of plastic. This is because it is necessary to avoid adsorbing iron filings on the bottom sealing plate 303; otherwise, the lifting action of the electromagnet cylinder unit 3 would be completely unable to perform a concentrated scraping operation on the iron filings at that location.

[0053] The suspension end cap unit 4 includes an internally threaded cap 401 located at the upper end of the magnetic cylinder 301, and a suspension perforated block 402 located on the upper surface of the internally threaded cap 401.

[0054] In this embodiment, the outer ring surface at the upper end of the magnetic cylinder 301 is provided with a threaded section that matches the internal threaded cover 401. One of the functions of the internal threaded cover 401 is to prevent graphite slurry from entering the magnetic cylinder 301, which could otherwise damage the electromagnet 302. The electromagnet 302 is a commercially available product.

[0055] In addition, the perforated block 402 for suspension is rectangular in shape, and its opening is oblong, which can provide a relatively simple and convenient hooking effect.

[0056] The slotted mounting plate unit 1 further includes an annular engaging groove 105 and a sliding limiting groove 106 disposed on the lower surface of the horizontal plate 101 and used selectively, as well as a screw hole block 107 disposed on the upper surface of the horizontal plate 101 and driving the horizontal plate 101 in a sliding manner.

[0057] In this embodiment, the annular locking groove 105 and the sliding limiting groove 106 are respectively matched with two types of magnetic separators with different shapes and different demagnetization methods.

[0058] The annular engaging groove 105 and the annular slot 104 are concentric circles, with the former on the outside and the latter on the inside. There are two sliding limiting grooves 106, located on both sides of the annular engaging groove 105, that is, closest to the side.

[0059] Furthermore, the length direction of the sliding limiting groove 106 is parallel to the length direction of the screw hole on the screw hole block 107, thereby enabling the reciprocating motor to reciprocate and slide the entire stirring and dispersing structure in conjunction with the drive screw.

[0060] The number of screw hole blocks 107 is also two.

[0061] The slotted mounting plate unit 1 also includes a slurry inlet 108 and a second perforated block 109 for suspension, which are disposed on the horizontal plate 101.

[0062] In this embodiment, the slurry inlet 108 is circular or rectangular in shape, providing an optional feeding method for the magnetic separator. The function and shape of the second perforated block 109 for suspension are similar to those of the perforated block 402 for suspension, ensuring that the stirring and dispersing structure can be lifted and removed from the main structure of the magnetic separator as needed.

[0063] Generally, the scraping and flushing of accumulated iron filings b can be performed at the insertion opening 103, and the stirring and dispersing structure does not need to be lifted. When the limiting stirring frame unit 2 is repaired or replaced, the stirring and dispersing structure generally needs to be lifted.

[0064] The limiting stirring frame unit 2 also includes a limiting insert 203 disposed on the lower surface of the radial plate 201, and a transverse rod 204 disposed on the drive shaft 11 and / or the stirring vertical rod 202.

[0065] In this embodiment, the limiting insert 203 and the transverse rod 204 are also integrally formed with the entire limiting stirring frame unit 2. The limiting insert 203 can be left unused; it needs to be used in conjunction with the limiting structure on the bottom surface of the magnetic separator.

[0066] The length of the transverse rod 204 should not be too large, and it is necessary to avoid bumping into the electromagnet cylinder unit 3 and the outer shell structure of the magnetic separator.

[0067] Ultimately, the radial plate 201, the vertical stirring rod 202, and the horizontal rod 204 can all significantly improve the stirring efficiency and degree of stirring of the stirring and dispersing structure.

[0068] The electromagnet cylinder unit 3 also includes an I-shaped support frame 305 disposed inside the magnetically conductive cylinder 301 and located between two adjacent electromagnets 302.

[0069] In this embodiment, the I-shaped support frame 305 is made of plastic, and its structure consists of one side-cut circular plate at the top and bottom, and several vertical plates in the middle.

[0070] The circular plate is not a complete circle, and the length of the vertical plate is sufficient and appropriate, thus enabling the I-shaped support frame 305 to perform at least the following two functions: First, this ensures that the electromagnets 302 are evenly distributed vertically, guaranteeing that the upper part of the magnetic cylinder 301 also has sufficient magnetic field strength. Second, it allows the connecting wires on the electromagnet 302 to pass upwards.

[0071] Correspondingly, the internal threaded cover 401 is also provided with a wire hole.

[0072] A magnetic separator including the above-mentioned stirring and dispersing structure: the structure also includes a circular barrel 5 supporting the horizontal plate 101 at the upper end, a feed inlet 6 provided on the annular plate of the circular barrel 5, a discharge outlet 7 provided on the bottom plate of the circular barrel 5, and a limiting cylinder 8 provided on the inner bottom surface of the circular barrel 5 and used to fit the limiting rod 203.

[0073] In this embodiment, the magnetic separator of the first structural type is a cylindrical type, and the stirring and dispersing structure can be fixedly installed at the upper opening of the cylindrical barrel 5. Furthermore, the upper edge of the cylindrical barrel 5 can engage with the annular engaging groove 105, thereby improving the installation stability of the stirring and dispersing structure.

[0074] In addition, graphite powder slurry can be added at both the feed inlet 6 and the slurry inlet 108, with the slurry level being lower than that at the feed inlet 6.

[0075] The limiting cylinder 8 is located at the center of the bottom surface of the circular barrel 5, and matches the limiting rod 203, thereby improving the rotational stability of the limiting stirring frame unit 2.

[0076] A magnetic separator including the above-mentioned stirring and dispersing structure is characterized in that: the structure further includes a cuboid open shell 9 that supports the horizontal plate 101 at the upper end, and a reciprocating motor mounting base 10 disposed on the cuboid open shell 9 and used to connect the screw hole block 107.

[0077] In this embodiment, the magnetic separator of the second structural style is a "rectangular pool" style. The reciprocating motor mounting base 10, together with the reciprocating motor, the drive screw, and the screw hole block 107, enables one of these stirring and dispersing structures to provide a long strip-shaped and relatively large effective stirring and demagnetizing area.

[0078] At this time, the stirring and dispersing structure moves and rotates simultaneously. The upper edge of the cuboid open shell 9 engages with the sliding limiting groove 106. Ball bearings can also be set in the sliding limiting groove 106 to reduce the moving resistance of the stirring and dispersing structure.

[0079] Specifically, the reciprocating motor mounting base 10 is L-shaped, and the reciprocating motor and drive screw are horizontally positioned. The two drive screws are arranged relatively close to the side, which does not affect the normal use of the stirring motor and the electromagnet cylinder unit 3.

[0080] The embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various modifications can be made without departing from the spirit of this application. These are non-inventive modifications and are protected by patent law as long as they are within the scope of the claims of this application.

Claims

1. A stirring and dispersing structure, comprising a drive shaft (11), characterized in that: It also includes a slotted mounting plate unit (1) with the drive shaft (11), a limiting stirring frame unit (2) disposed on the drive shaft (11) and whose upper end engages with the slotted mounting plate unit (1), an electromagnet cylinder unit (3) inserted on the slotted mounting plate unit (1) and located between the drive shaft (11) and the limiting stirring frame unit (2), and a suspension end cap unit (4) disposed at the upper end of the electromagnet cylinder unit (3) and used to trap accumulated iron filings on the lower surface of the slotted mounting plate unit (1) by lifting the electromagnet cylinder unit (3) upward.

2. The stirring and dispersing structure according to claim 1, characterized in that: The slotted mounting plate unit (1) includes a horizontal plate (101), a bearing mounting hole (102) disposed on the horizontal plate (101) for mounting the drive shaft (11), an insertion opening (103) disposed on the horizontal plate (101) for mounting the electromagnet cylinder unit (3), and an annular slot (104) disposed on the lower surface of the horizontal plate (101) for inserting the limiting stirring frame unit (2).

3. The stirring and dispersing structure according to claim 2, characterized in that: The limiting stirring frame unit (2) includes a radial plate (201) disposed on the lower end face of the drive shaft (11) and a stirring vertical rod (202) disposed on the radial plate (201) and inserted into the annular slot (104) at its upper end.

4. The stirring and dispersing structure according to claim 2, characterized in that: The electromagnet cylinder unit (3) includes a magnetic cylinder (301) disposed on the insertion opening (103), an electromagnet (302) disposed inside the magnetic cylinder (301), a bottom sealing plate (303) disposed on the magnetic cylinder (301), and a limiting ring (304) disposed on the outer side of the magnetic cylinder (301) and used to engage the upper surface of the horizontal plate (101).

5. The stirring and dispersing structure according to claim 4, characterized in that: The suspension end cap unit (4) includes an internal threaded cap (401) located at the upper end of the magnetic cylinder (301), and a suspension perforated block (402) located on the upper surface of the internal threaded cap (401).

6. The stirring and dispersing structure according to claim 2, characterized in that: The slotted mounting plate unit (1) further includes an annular engaging groove (105) and a sliding limiting groove (106) disposed on the lower surface of the horizontal plate (101) and used selectively, as well as a screw hole block (107) disposed on the upper surface of the horizontal plate (101) and driving the horizontal plate (101) in a sliding manner.

7. The stirring and dispersing structure according to claim 2, characterized in that: The slotted mounting plate unit (1) further includes a slurry inlet (108) and a second perforated block (109) for suspension, which are provided on the horizontal plate (101).

8. The stirring and dispersing structure according to claim 3, characterized in that: The limiting stirring frame unit (2) also includes a limiting insert (203) disposed on the lower surface of the radial plate (201), and a transverse rod (204) disposed on the drive shaft (11) and / or the stirring vertical rod (202).

9. The stirring and dispersing structure according to claim 4, characterized in that: The electromagnet cylinder unit (3) also includes an I-shaped support frame (305) disposed inside the magnetic cylinder (301) and located between two adjacent electromagnets (302).

10. A magnetic separator comprising the stirring and dispersing structure as described in claim 8, characterized in that: The structure also includes a circular barrel (5) that supports the horizontal plate (101) at the top, a feed port (6) on the annular plate of the circular barrel (5), a discharge port (7) on the bottom plate of the circular barrel (5), and a limiting cylinder (8) on the inner bottom surface of the circular barrel (5) for fitting the limiting rod (203).

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