Slurry demagnetizing equipment
By using multiple magnetic drainage plates and chamber structures in the slurry demagnetization equipment, the problem of poor magnetic removal effect of existing equipment when processing large-particle magnetic particles and high-speed flowing slurry is solved, and more efficient slurry demagnetization and cell safety are achieved.
Patent Information
- Application Number
- CN202421277679.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-05
- Publication Date
- 2025-04-29
- Estimated Expiration
- 2034-06-05
AI Technical Summary
When existing slurry demagnetization equipment deals with large-particle magnetic particles and high-speed flowing slurry, the demagnetization effect is poor, resulting in low safety of the battery cell.
A slurry magnetization de-energization device is designed, and multiple magnetic drainage plates are arranged at intervals along the length of the barrel to form multiple chambers. When the slurry flows through these chambers, magnetic particles are adsorbed multiple times, and the magnetic drainage plate hinders the flow of the slurry, reduces the flow rate, and prevents the magnetic particles from being washed away.
It significantly improves the demagnetization effect of the slurry, enhances the safety of the battery cell, and simplifies the cleaning process of the magnetic drainage plate.
Smart Images
Figure CN222805323U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of battery manufacturing equipment, in particular to a slurry demagnetization device. Background Art
[0002] In the battery manufacturing process, in order to prevent the slurry of the battery cell from self-discharging, demagnetization is required before using the slurry, thereby improving the safety of the battery cell. The existing demagnetization equipment includes a barrel, in which a rotatable magnetic rod is arranged, and the magnetic particles in the slurry are adsorbed by the magnetic rod. This demagnetization equipment has the following problems: (1) large magnetic particles are difficult to continue to be adsorbed on the magnetic rod under the action of centrifugal force; (2) the continuous flow of slurry can easily wash away or peel off the magnetic particles adsorbed on the magnetic rod. The above problems will lead to poor demagnetization effect of the slurry, and then lead to poor safety of the battery cell.
[0003] Therefore, there is an urgent need for a slurry demagnetization device to solve the above technical problems. Utility Model Content
[0004] The utility model aims to provide a slurry demagnetization device, which can fully absorb magnetic particles in the slurry, and the absorbed magnetic particles are not easy to be washed away or peeled off, so the demagnetization effect of the slurry is good.
[0005] To achieve this purpose, the utility model adopts the following technical solutions:
[0006] Slurry demagnetization equipment, including:
[0007] A barrel, wherein the barrel is provided with a feed inlet and a discharge outlet;
[0008] A plurality of magnetic guide plates are arranged in the barrel at intervals along the length direction of the barrel, and divide the interior of the barrel into a plurality of chambers. The feed port, the plurality of chambers and the discharge port are connected in sequence to allow the slurry to pass through. The magnetic guide plates can absorb the magnetic particles in the slurry.
[0009] As an optional solution, along the length of the barrel and in the direction from the feed port to the discharge port, the spacing between the plurality of magnetic guide plates decreases.
[0010] As an optional solution, the magnetic guide plate is detachably connected to the barrel.
[0011] As an optional solution, a magnetic member is provided on the inner wall of the barrel, and the magnetic member can absorb the magnetic particles in the slurry.
[0012] As an optional solution, the barrel is made of magnetic material, and the inner wall of the barrel can absorb the magnetic particles in the slurry.
[0013] As an optional solution, the surface of the magnetic guide plate facing the feed port is perpendicular to the length direction of the barrel.
[0014] As an optional solution, the magnetic guide plate is provided with a connecting hole, and the connecting hole enables the adjacent chambers to communicate with each other.
[0015] As an optional solution, the inner wall of the barrel at the magnetic guide plate is surrounded to form a geometric figure, the connecting hole is arranged at the center of the corresponding geometric figure, and the ratio of the cross-sectional area of the connecting hole to the cross-sectional area of the corresponding geometric figure is 0.2-0.6.
[0016] As an optional solution, a gap is formed between the magnetic guide plate and the inner wall of the barrel, and the gap enables adjacent chambers to communicate.
[0017] As an optional solution, a plurality of the magnetic guide plates are connected to the same side of the barrel axis, and each of the gaps is located on the other side of the barrel.
[0018] As an optional solution, two adjacent magnetic guide plates are staggered so that two adjacent gaps are staggered.
[0019] The beneficial effects of the utility model are:
[0020] When the utility model is used, the slurry demagnetization equipment enters the barrel from the feed port, passes through each chamber in turn, and is discharged from the discharge port. When the slurry flows through each magnetic drainage plate, the magnetic particles in the slurry are adsorbed by the magnetic drainage plates. On the one hand, multiple magnetic drainage plates can fully contact the slurry and perform multi-stage adsorption of the magnetic particles in the slurry, thereby improving the demagnetization effect of the slurry; on the other hand, the magnetic drainage plates hinder the flow of the slurry, so they can reduce the flow rate of the slurry, and prevent the high-speed flow of the slurry from washing away or peeling off the magnetic particles adsorbed on the magnetic drainage plates, further improving the demagnetization effect of the slurry, and also improving the safety of the battery cells manufactured using the slurry. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 This is a schematic diagram of the internal structure of the slurry demagnetization device provided in Example 1 of the utility model;
[0022] Figure 2 This is a schematic diagram of the internal structure of the slurry demagnetization device provided in the second embodiment of the utility model;
[0023] Figure 3 It is a schematic diagram of the internal structure of the slurry demagnetization equipment provided in Example 3 of the utility model.
[0024] In the figure:
[0025] 10. Cylinder; 11. Feed port; 12. Discharge port; 13. First half cylinder; 14. Second half cylinder; 15. Slot;
[0026] 20. Magnetic drainage plate; 21. Communication hole;
[0027] 31. Chamber; 32. Gap;
[0028] 40. Magnetic parts;
[0029] 60. Clamp;
[0030] 70. Seal the blockage;
[0031] 80. Connectors. DETAILED DESCRIPTION
[0032] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.
[0033] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0034] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.
[0035] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.
[0036] Embodiment 1
[0037] This embodiment provides a slurry demagnetization device, which can be used to demagnetize slurry for making battery cores. Of course, the slurry demagnetization device of this embodiment can also be used to demagnetize other fluids containing magnetic substances, which is not specifically limited here.
[0038] like Figure 1 As shown, the slurry demagnetization equipment includes a barrel 10 and a plurality of magnetic guide plates 20. The barrel 10 is provided with a feed port 11 and a discharge port 12 at both ends along its length direction, respectively. The plurality of magnetic guide plates 20 are arranged in the barrel 10 at intervals along the length direction of the barrel 10, thereby dividing the barrel 10 into a plurality of chambers 31. The feed port 11, the plurality of chambers 31 and the discharge port 12 of the barrel 10 are connected in sequence, so that the slurry to be demagnetized can pass through, and the magnetic guide plates 20 can absorb the magnetic particles in the slurry. It should be noted that the drainage in the "magnetic guide plate 20" means that it can guide the flow direction of the slurry.
[0039] When the slurry demagnetization device of this embodiment is used to demagnetize the slurry, the external slurry supply structure drives the slurry from the feed port 11 into the barrel 10, and the slurry passes through each chamber 31 in turn and is discharged from the discharge port 12. When the slurry flows through each magnetic guide plate 20, the magnetic particles in the slurry are adsorbed by the magnetic guide plate 20. On the one hand, the multiple magnetic guide plates 20 can fully contact the slurry and perform multi-stage adsorption of the magnetic particles in the slurry, thereby improving the demagnetization effect of the slurry; on the other hand, the magnetic guide plate 20 hinders the flow of the slurry, so it can reduce the flow rate of the slurry, avoid the high-speed flow of the slurry from washing away or peeling off the magnetic particles adsorbed on the magnetic guide plate 20, and further improve the demagnetization effect of the slurry; in addition, the magnetic guide plate 20 that can adsorb magnetic particles in this embodiment does not rotate, so the problem of centrifugal force will not cause the larger magnetic particles to be unable to be adsorbed.
[0040] like Figure 1As shown, the barrel 10 is a roughly cylindrical hollow body, and the axial direction of the barrel 10 is its length direction. In this embodiment, the axis of the barrel 10 extends roughly in the horizontal direction. In some embodiments, the axis of the barrel 10 has a certain inclination relative to the horizontal direction, and one end of the feed port 11 is higher than one end of the discharge port 12. At this time, the slurry can flow from the feed port 11 to the discharge port 12 under the action of gravity, thereby reducing the energy consumption of driving the slurry. In some embodiments, the axis of the barrel 10 has a certain inclination relative to the horizontal direction, and one end of the feed port 11 is lower than one end of the discharge port 12. This setting increases the flow resistance of the slurry in the barrel 10, which is conducive to the slurry fully contacting with each magnetic guide plate 20, and improving the demagnetization effect of the slurry demagnetization equipment. In this embodiment, the cross-section of the inner wall of the barrel 10 is circular. In other embodiments, the cross-section of the inner wall of the barrel 10 can also be set to a triangle, a quadrilateral or other shape, which is not specifically limited here.
[0041] Optionally, the barrel 10 can be made of a resin material, which is lightweight and low in cost. Specifically, the material of the barrel 10 can be, but is not limited to, PP material, PE material, PVDF material, PC material, PET material, POM material, PSA material, etc. In other embodiments, the barrel 10 can also be made of a metal material. Optionally, the magnetic guide plate 20 can be a plate made of a magnet, an electromagnet, or a magnetic polymer. In this embodiment, the number of the magnetic guide plates 20 is six. In other embodiments, the specific number of the magnetic guide plates 20 can be selected and set as needed.
[0042] like Figure 1 As shown, a connecting hole 21 is provided on the magnetic guide plate 20, and the connecting hole 21 connects the adjacent chambers 31. The method of connecting the chambers 31 in this embodiment is not only simple in structure, but also convenient for adjusting the flow resistance of the slurry in the barrel 10 by adjusting the size of the connecting hole 21, thereby facilitating matching different specifications of slurry demagnetization equipment according to the properties of the slurry itself. In this embodiment, the cross-sectional shape of the connecting hole 21 is circular. In other embodiments, the cross-sectional shape of the connecting hole 21 can be set to a triangle, a quadrilateral or other shapes.
[0043] The inner wall of the barrel 10 at the magnetic guide plate 20 is surrounded to form a geometric figure, and the connecting hole 21 on the magnetic guide plate 20 is set at the center of the geometric figure. This arrangement makes it easier for each position of the magnetic guide plate 20 to contact the slurry evenly, thereby improving the demagnetization effect on the slurry. Optionally, the ratio of the cross-sectional area of the connecting hole 21 on the magnetic guide plate 20 to the cross-sectional area of the geometric figure formed by the inner wall of the barrel 10 at the corresponding position is 0.2-0.6. By setting the above cross-sectional area ratio within this range, it can avoid the slurry flow rate being too fast due to the connecting hole 21 being too large, so that the magnetic particles in the slurry cannot be fully adsorbed, and it can also avoid the connecting hole 21 being too small to cause the slurry flow resistance to be too large, so that the energy consumption of slurry demagnetization is increased and the efficiency is reduced. Optionally, the above cross-sectional area ratio can be: 0.2, 0.3, 0.4, 0.5, 0.6.
[0044] In some embodiments, the connecting hole 21 is arranged at an eccentric position of the geometric figure formed by the barrel 10 at the magnetic guide plate 20, and two adjacent connecting holes 21 are arranged staggered. This arrangement increases the tortuosity of the flow path of the slurry in the barrel 10, reduces the flow rate of the slurry, and is conducive to the slurry fully contacting with the magnetic guide plate 20, thereby improving the demagnetization effect of the slurry.
[0045] In some embodiments, such as Figure 1 As shown, a plurality of magnetic guide plates 20 are arranged at equal intervals along the length direction of the barrel 10. Such an arrangement not only has a simple structure, but also makes the entire flow speed of the slurry in the barrel 10 uniform.
[0046] In some embodiments, the spacing between the plurality of magnetic guide plates 20 decreases along the length of the barrel 10 and in the direction from the feed port 11 to the discharge port 12. By such an arrangement, the contact degree between the slurry and the magnetic guide plates 20 far from the feed port 11 is greater than the contact degree between the slurry and the magnetic guide plates 20 near the feed port 11, so that the amount of magnetic particles adsorbed by each magnetic guide plate 20 can be more uniform, avoiding the problem that the magnetic guide plates 20 near the feed port 11 are saturated with magnetic particles, while the magnetic guide plates 20 far from the feed port 11 adsorb very few magnetic particles, thereby improving the demagnetization effect of the slurry demagnetization equipment.
[0047] like Figure 1 As shown, the surface of the magnetic guide plate 20 facing the feed port 11 is perpendicular to the length direction of the barrel 10. This arrangement makes the force on the magnetic guide plate 20 more uniform, avoiding the situation where the magnetic guide plate 20 is subjected to excessive force locally, resulting in the magnetic particles adsorbed in this part being peeled off. Of course, in other embodiments, the surface of the magnetic guide plate 20 facing the feed port 11 can also be set to have a certain inclination angle with the vertical direction, and those skilled in the art can flexibly set it according to needs.
[0048] After the slurry demagnetization equipment has been working for a period of time, the amount of magnetic particles adsorbed by the magnetic drainage plate 20 reaches saturation. At this time, the magnetic drainage plate 20 needs to be cleaned. In some embodiments, high-pressure clean water can be introduced into the slurry demagnetization equipment to remove the magnetic particles adsorbed by the magnetic drainage plate 20 by flushing with clean water. However, this method is costly and time-consuming.
[0049] In this embodiment, the magnetic guide plate 20 is detachably connected to the barrel 10, so that the magnetic guide plate 20 can be removed from the barrel 10 for cleaning after the slurry demagnetization equipment has been working for a period of time. This method has high cleaning efficiency and good effect.
[0050] Specifically, Figure 1 As shown, a plurality of sockets are provided on the upper side of the barrel 10, and the plurality of sockets are arranged at intervals along the length direction of the barrel 10. Each magnetic drainage plate 20 can be inserted into the barrel 10 from a corresponding socket, so that each chamber 31 is formed in the barrel 10. When the magnetic drainage plate 20 needs to be cleaned, it can be taken out from the corresponding socket. Optionally, a sealing plug 70 is also provided at each socket. By providing the sealing plug 70, the slurry can be prevented from overflowing from the socket, thereby ensuring the sealing of the barrel 10. Optionally, a slot 15 is provided at the bottom of the inner wall of the barrel 10 corresponding to each socket, and the bottom of the magnetic drainage plate 20 is plugged into the corresponding slot 15, thereby ensuring that the position of each magnetic drainage plate 20 in the barrel 10 is stable, and preventing the magnetic drainage plate 20 from being tilted by the slurry.
[0051] In some embodiments, the barrel 10 can also be configured to include an upper barrel and a lower barrel, a plurality of upper half grooves are provided on the inner wall of the upper barrel, and a plurality of lower half grooves are provided on the inner wall of the lower barrel, and when the upper barrel and the lower barrel are buckled, each upper half groove and each lower half groove are connected to form a slot 15, and each magnetic guide plate 20 is inserted into a slot 15. When the magnetic guide plate 20 needs to be cleaned, the upper barrel and the lower barrel are disassembled to take out the magnetic guide plate 20.
[0052] In order to further improve the demagnetization effect of slurry demagnetization equipment, such as Figure 1 As shown, a magnetic part 40 is provided on the inner wall of the barrel 10, and the magnetic part 40 can absorb the magnetic particles in the slurry. By providing the magnetic part 40, not only the overall ability of the slurry demagnetization equipment to absorb magnetic materials is improved, but also the slurry in each chamber 31 is more fully in contact with the magnetic absorption component (i.e., the magnetic part 40 and the magnetic guide plate 20), thereby improving the demagnetization effect of the slurry demagnetization equipment. Optionally, the magnetic part 40 can be connected to the inner wall of the barrel 10 by bonding, clamping, welding, etc., which is not specifically limited here.
[0053] In another embodiment, the barrel 10 can be made of a magnetic material so that the inner wall of the barrel 10 can absorb the magnetic particles in the slurry. This solution not only has a strong demagnetization ability and a good demagnetization effect, but also has a simple structure and is easy to manufacture. Optionally, the barrel 10 can be made of a magnetic polymer.
[0054] Embodiment 2
[0055] This embodiment provides a slurry demagnetization device, which has the same general structure and working principle as the slurry demagnetization device in the first embodiment, and the difference mainly lies in the communication mode of each chamber 31, which is as follows:
[0056] like Figure 2 As shown, a gap 32 is formed between the magnetic guide plate 20 and the inner wall of the barrel 10, and the gap 32 connects the adjacent chambers 31. The gap 32 connecting the chambers 31 is directly formed by the magnetic guide plate 20 and the inner wall of the barrel 10, and there is no need to process the connecting hole 21 additionally, thereby simplifying the structure of the slurry demagnetization equipment and reducing the manufacturing difficulty. Under this scheme, after the slurry enters the first chamber 31 from the feed port 11, it enters the next chamber 31 from the gap 32 between the first magnetic guide plate 20 and the barrel 10, and so on, and is finally discharged from the discharge port 12.
[0057] like Figure 2 As shown, a plurality of magnetic guide plates 20 are connected to the same side of the axis of the barrel 10, and each gap 32 is located on the other side of the barrel 10. At this time, each gap 32 is relatively arranged along the length direction of the barrel 10. In this embodiment, a gap 32 is formed between the upper end of each magnetic guide plate 20 and the inner wall of the barrel 10, thereby forming an overflow weir structure. In this embodiment, the slurry continuously enters the chamber 31 during the demagnetization process, and only when the liquid level of the chamber 31 is higher than the upper end of the magnetic guide plate 20, does it enter the next chamber 31, and so on, and is finally discharged from the discharge port 12. This structure can more significantly reduce the flow rate of the slurry, thereby improving the demagnetization effect.
[0058] In this embodiment, the magnetic guide plate 20 and the barrel 10 are also detachably connected, thereby improving the convenience of cleaning the magnetic guide plate 20. Figure 2As shown, the bottom of the barrel 10 is provided with a plurality of jacks, and the plurality of jacks are arranged at intervals along the length direction of the barrel 10, and each magnetic guide plate 20 can be inserted into the barrel 10 from a corresponding jack. In this embodiment, a connector 80 is installed at the lower end of each magnetic guide plate 20, and the magnetic guide plate 20 can be connected to the outer wall of the barrel 10 through the connector 80. The connector 80 can be connected to the barrel 10 by fasteners such as bolts. Optionally, the shape of the connector 80 matches the shape of the outer wall of the barrel 10, that is, after the connector 80 is installed, it is arranged in a close fit with the outer wall of the barrel 10, so that the connector 80 plays a sealing role at the jack, thereby improving the sealing of the barrel 10.
[0059] Embodiment 3
[0060] This embodiment provides a slurry demagnetization device, which has the same general structure and working principle as the slurry demagnetization device in the second embodiment, and the difference mainly lies in the arrangement of each gap 32, which is as follows:
[0061] like Figure 3 As shown, a gap 32 is formed between the magnetic guide plate 20 and the inner wall of the barrel 10, and two adjacent magnetic guide plates 20 are staggered so that two adjacent gaps 32 are staggered. This arrangement increases the degree of tortuosity of the flow path of the slurry in the barrel 10, thereby better decelerating the slurry, allowing the slurry to more fully contact the magnetic guide plate 20, and improving the demagnetization effect. In addition, under the premise that the size of the barrel 10 is certain, this arrangement is also convenient for increasing the total number of magnetic guide plates 20 and improving the overall ability of the slurry demagnetization equipment to adsorb magnetic substances. In this embodiment, a plurality of gaps 32 are arranged alternately one above and one below.
[0062] In this embodiment, the magnetic guide plate 20 and the barrel 10 are also detachably connected, thereby improving the convenience of cleaning the magnetic guide plate 20. Figure 3 As shown, the barrel 10 includes a first half barrel 13 and a second half barrel 14, and the inner wall of the first half barrel 13 is detachably connected with a plurality of magnetic guide plates 20, and the inner wall of the second half barrel 14 is also detachably connected with a plurality of magnetic guide plates 20. When the first half barrel 13 and the second half barrel 14 are buckled together, the magnetic guide plates 20 on the first half barrel 13 and the magnetic guide plates 20 on the second half barrel 14 are alternately arranged to form each chamber 31. The first half barrel 13 and the second half barrel 14 can be clamped and fixed by a clamp 60 to ensure the sealing of the barrel 10. Optionally, the first half barrel 13 and the magnetic guide plates 20 can be connected by plugging, fastener connection, etc., as long as it is easy to disassemble. Similarly, the second half barrel 14 and the magnetic guide plates 20 can also be connected by plugging, fastener connection, etc., as long as it is easy to disassemble.
[0063] Obviously, the above embodiments of the utility model are only examples for clearly explaining the utility model, and are not intended to limit the implementation methods of the utility model. For ordinary technicians in the field, according to the idea of the utility model, there will be changes in the specific implementation methods and application scopes, and the content of this specification should not be understood as limiting the utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the utility model should be included in the protection scope of the claims of the utility model.
Claims
1. Slurry demagnetization equipment, characterized in that: include: A barrel (10), wherein the barrel (10) is provided with a feed inlet (11) and a discharge outlet (12); A plurality of magnetic guide plates (20) are arranged in the barrel (10) at intervals along the length direction of the barrel (10), and the interior of the barrel (10) is divided into a plurality of chambers (31); the feed port (11), the plurality of chambers (31) and the discharge port (12) are connected in sequence to allow slurry to pass through; and the magnetic guide plates (20) are capable of absorbing magnetic particles in the slurry.
2. The slurry demagnetization equipment according to claim 1, characterized in that: Along the length of the barrel (10) and in a direction from the feed port (11) to the discharge port (12), the spacing between the plurality of magnetic guide plates (20) decreases.
3. The slurry demagnetization equipment according to claim 1, characterized in that: The magnetic guide plate (20) is detachably connected to the barrel (10).
4. The slurry demagnetization equipment according to claim 1, characterized in that: A magnetic member (40) is provided on the inner wall of the barrel (10), and the magnetic member (40) is capable of absorbing magnetic particles in the slurry; or, the barrel (10) is made of a magnetic material, and the inner wall of the barrel (10) is capable of absorbing magnetic particles in the slurry.
5. The slurry demagnetization equipment according to claim 1, characterized in that: The surface of the magnetic guide plate (20) facing the feed port (11) is perpendicular to the length direction of the barrel (10).
6. The slurry demagnetization equipment according to any one of claims 1 to 5, characterized in that: The magnetic guide plate (20) is provided with a communication hole (21), and the communication hole (21) enables adjacent chambers (31) to communicate with each other.
7. The slurry demagnetization equipment according to claim 6, characterized in that: The inner wall of the barrel (10) at the magnetic guide plate (20) is arranged to form a geometric figure, the connecting hole (21) is arranged at the center of the corresponding geometric figure, and the ratio of the cross-sectional area of the connecting hole (21) to the cross-sectional area of the corresponding geometric figure is 0.2-0.
6.
8. The slurry demagnetization equipment according to any one of claims 1 to 5, characterized in that: A gap (32) is formed between the magnetic guide plate (20) and the inner wall of the barrel (10), and the gap (32) enables adjacent chambers (31) to communicate with each other.
9. The slurry demagnetization equipment according to claim 8, characterized in that: A plurality of the magnetic guide plates (20) are connected to the same side of the axis of the barrel (10), and each of the gaps (32) is located on the other side of the barrel (10).
10. The slurry demagnetization equipment according to claim 8, characterized in that: The two adjacent magnetic guide plates (20) are staggered so that the two adjacent gaps (32) are staggered.