Periodic high gradient magnetic separator

Abstract

The present application relates to a kind of periodic high gradient magnetic separators, including the rack with magnetic system device, further including tank, tank is arranged obliquely, define as length direction along upper end material port to lower end material port direction, with the direction perpendicular to length direction is height direction, magnetic medium with length direction size greater than height direction size is arranged in the inner chamber of tank, magnetic system device includes magnetic system frame and the left magnetic pole head and right magnetic pole head set on magnetic system frame, left magnetic pole head, right magnetic pole head are located at the opposite sides of magnetic medium height direction, left magnetic pole head and / or right magnetic pole head are surrounded with the excitation coil of axis along magnetic medium height direction, magnetic medium is located in the separation space formed between left magnetic pole head, right magnetic pole head, the magnetic field direction between left magnetic pole head, right magnetic pole head is perpendicular or oblique intersection with magnetic medium length direction.The present application solves the technical problem that the magnetic pole distance of magnetic system in prior art is larger and causes larger excitation power consumption.

Description

TECHNICAL FIELD

[0001] The present application relates to a kind of magnetic separation equipment in the technical field of ore pulp magnetic separation, more particularly to a periodic high gradient magnetic separator. BACKGROUND

[0002] In recent decades, China's rapid economic development has led to a huge demand for mineral resources, in addition to a large number of imports, China's local resources development efforts have also increased year by year. Some easily exploitable, high-grade mineral resources have been gradually depleted after decades of development and utilization. In order to maintain economic development and not to be too high on foreign dependence, China is in the stage of needing to develop and utilize a large number of difficult-to-process mineral resources with the characteristics of "poor, fine and mixed". The commonly used magnetic separation equipment for processing fine and weakly magnetic materials on the market is a periodic high gradient magnetic separator.

[0003] The existing periodic high gradient magnetic separator, such as the "periodic horizontal magnetic system high gradient magnetic separator" disclosed in Chinese patent CN203061279U, includes a rack, a magnetic yoke is arranged on the rack, a horizontally arranged magnetic system is arranged in the magnetic yoke, the magnetic system has an annular structure with an axis extending in the upward and downward directions, a vertical sorting cavity is arranged in the inner hole of the magnetic system, and a magnetic medium box is arranged in the sorting cavity.

[0004] In use, the magnetic system is powered, the magnetic system forms a high-strength magnetic field and a high specific magnetic force in the magnetic medium box, and the magnetic medium box has magnetism. When the feed slurry is uniformly fed into the sorting cavity, the non-magnetic particles pass through the magnetic medium box under the action of gravity and the slurry fluid, flow out of the sorting cavity, and flow out of the discharge port at the lower end of the sorting cavity. When the sorting medium surface is full of magnetic particles, stop feeding the slurry, and flush the magnetic medium box.

[0005] The existing high gradient magnetic separator has the following problems: in the prior art, the direction of the slurry passing through the magnetic medium box is the upward and downward direction, the axis of the magnetic system is arranged in the upward and downward direction, that is, the direction of the slurry passing through the magnetic medium is consistent with the direction of the magnetic field. Although this ensures that the slurry has a long passing path, the distance between the upper and lower ends of the magnetic system, i.e. the magnetic pole distance, is large. A large magnetic pole distance will result in high excitation power consumption. In addition, when the magnetic medium box needs to be cleaned, the magnetic medium box needs to be pushed out of the sorting cavity in the upward and downward direction. Since the pushing device will affect the feeding and discharging of the sorting cavity, the pushing device can only be set as a temporary device. The connection between the temporary device and the magnetic medium box is not easy, which not only cannot be operated mechanically and automatically, but also increases the labor intensity of the workers and affects the magnetic separation efficiency. SUMMARY

[0006] The periodic high-gradient magnetic separator aims to solve the problem of large magnetic pole distance in the magnetic system and large excitation power consumption in the prior art.

[0007] To solve the above technical problems, the technical scheme of the periodic high-gradient magnetic separator is as follows:

[0008] The periodic high-gradient magnetic separator comprises a rack provided with a magnetic system device, a groove body with an upper end opening and a lower end opening, the groove body is arranged to be inclined from top to bottom to the left side, the length direction is defined as the direction from the upper end opening to the lower end opening, and the height direction is perpendicular to the length direction, the magnetic medium with the length direction size larger than the height direction size is arranged in the inner cavity of the groove body, the magnetic system device comprises a magnetic system frame plate and left and right magnetic pole heads arranged on the magnetic system frame plate, the left and right magnetic pole heads are located outside the groove body, the left and right magnetic pole heads are located on the opposite sides of the height direction of the magnetic medium, the excitation coil with the axis extending along the height direction of the magnetic medium is arranged around the left and right magnetic pole heads, the magnetic medium is located in the separation space formed between the left and right magnetic pole heads, and the magnetic field direction between the left and right magnetic pole heads is perpendicular or obliquely intersected with the length direction of the magnetic medium.

[0009] Further, the length direction size of the magnetic medium is more than five times of the height direction size.

[0010] Further, the installation angle of the magnetic system device relative to the rack is adjustable to adjust the inclination angle of the groove body and the axis direction of the excitation coil.

[0011] Further, the excitation coil comprises a left excitation coil around the left magnetic pole head and a right excitation coil around the right magnetic pole head, and the left and right excitation coils are coaxially arranged.

[0012] Further, the groove body comprises a middle groove body section in the sorting space and upper and lower groove body sections arranged at the upper and lower ends of the middle groove body section, the bottom walls of the middle groove body section, the upper groove body section and the lower groove body section are flush arranged, the height of the top wall of the middle groove body section is higher than the height of the top wall of the upper groove body section and the height of the top wall of the lower groove body section, the magnetic medium is arranged in the middle groove body section, the height of the magnetic medium is smaller than the height of the middle groove body section, the periodic height magnetic separator further comprises a magnetic medium lifting mechanism for driving the magnetic medium to reciprocate in the middle groove body section along the height direction, the magnetic medium has an adsorption station moving to the bottom of the middle groove body section along the height direction and a discharge station moving to the top of the middle groove body section along the height direction during reciprocation, the discharge channel extending along the length direction of the groove body is formed between the bottom of the magnetic medium and the bottom wall of the middle groove body section at the discharge station, the upper end of the magnetic medium is fixed with a baffle arranged along the length direction of the magnetic medium, and the two end portions of the length direction of the baffle are used to contact and match the two end portions of the length direction of the middle groove body section, so as to prevent the ore pulp from entering the space between the top of the magnetic medium along the height direction and the top of the middle groove body section along the height direction at the adsorption station.

[0013] Further, the left magnetic pole head is provided with a left magnetic pole head guide hole, a transmission rod with a lower end connected with the magnetic medium is movably arranged in the left magnetic pole head guide hole, and the magnetic medium lifting mechanism is connected with the upper end of the transmission rod to drive the magnetic medium to reciprocate in the middle groove body section through the transmission rod.

[0014] Further, the magnetic medium lifting mechanism is a pneumatic cylinder type lifting mechanism, a hydraulic cylinder type lifting mechanism or an electric push rod type lifting mechanism.

[0015] The present application has the following advantages: in the present application, the groove body is arranged obliquely, so that the left magnetic pole head and the right magnetic pole head can be arranged on the two sides of the magnetic medium along the height direction, the flow direction of the ore pulp is along the length direction of the groove body, that is, the direction of the ore pulp passing through the magnetic medium is perpendicular or obliquely intersected with the direction of the magnetic field, the left magnetic pole head and the right magnetic pole head can continuously generate the magnetic field penetrating through the magnetic medium in the sorting space formed between the two, the length of the magnetic medium along the length direction is greater than the length along the height direction, the passing path of the ore pulp through the magnetic medium is long, the magnetic adsorption probability is high, and thus the preferred separation index is obtained, the pole distance of the left magnetic pole head and the right magnetic pole head is no longer consistent with the length direction of the magnetic medium as in the prior art, the pole distance between the left magnetic pole head and the right magnetic pole head is smaller, and thus the consumption of excitation power is reduced.

[0016] Further, in the magnetic separation, the magnetic medium lifting mechanism can drive the magnetic medium to move to the lower adsorption station, the baffle prevents the ore pulp from entering the space between the top of the magnetic medium height direction and the top of the middle groove section height direction, so as to avoid the ore pulp flowing out without being subjected to the magnetic separation of the magnetic medium, thereby ensuring the magnetic separation precision; when the magnetic separation is completed and the ore needs to be unloaded, the magnetic medium lifting mechanism can drive the magnetic medium to move to the higher unloading station, and the magnetic medium bottom and the bottom wall of the middle groove section form an unloading channel extending along the length direction of the groove body, so as to flush the magnetic medium, and most of the magnetic minerals can fall into the unloading channel to realize rapid discharge, thereby avoiding the magnetic minerals from blocking the magnetic medium.

[0017] Further, in the present application, the transmission rod is arranged on the left magnetic pole head to drive the magnetic medium to move along the height direction of the middle groove section, and the transmission rod does not affect the feeding and discharging problems of the upper and lower ends of the groove body, so that the magnetic medium lifting mechanism can be arranged as a normal structure, and it is not necessary to connect the pushing mechanism every time the ore is unloaded as in the prior art, which helps to improve the unloading efficiency and reduce the labor intensity of the workers. BRIEF DESCRIPTION OF DRAWINGS

[0018] The above and other objects, features and advantages of the disclosed example embodiments will become more apparent from the following detailed description, read in conjunction with the accompanying drawings. In the drawings, several embodiments of the disclosure are illustrated by way of example and not limitation in which like reference numerals represent similar, or corresponding parts throughout the several views, wherein:

[0019] Figure 1 is a structural schematic diagram of one embodiment of the periodic high gradient magnetic separator in the present application;

[0020] Figure 2 is Figure 1 is a state schematic diagram when the magnetic medium in the present application moves to the unloading station;

[0021] Figure 3 is Figure 1 is a top view of the present application;

[0022] Figure 4 is Figure 1 is a left view of the present application;

[0023] Figure 5 is Figure 1 is a right view of the present application;

[0024] Figure 6 is Figure 1 is a perspective view of the present application;

[0025] Figure 7 is Figure 1 is a cooperation schematic diagram of the groove body and the magnetic medium in the present application;

[0026] Figure 8yes Figure 2 Schematic diagram of the fit between the central tank and the magnetic medium;

[0027] Explanation of reference numerals in the attached diagram: 1. Pneumatic cylinder; 2. Transmission rod; 3. Baffle; 4. Left magnetic pole head; 5. Magnetic medium; 6. Left excitation coil; 7. Lower feed port; 8. Solenoid valve; 9. Upper piping system; 10. Upper feed port; 11. Tank; 12. Right excitation coil; 13. Right magnetic pole head; 14. Magnetic system frame plate; 15. Frame; 16. Middle tank section; 17. Upper tank section; 18. Lower tank section; 19. Unloading channel; 20. Unloading water inlet; 21. Feed inlet; 22. Lower piping system; 23. Non-magnetic material outlet; 24. Magnetic material outlet. Detailed Implementation

[0028] To facilitate understanding of the present invention, a more detailed description is provided below with reference to the accompanying drawings and specific embodiments. Preferred embodiments of the invention are shown in the drawings. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a thorough and complete understanding of the disclosure of the invention.

[0029] It should be noted that, unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the invention.

[0030] An embodiment of a periodic high-gradient magnetic separator in this invention is as follows: Figures 1-8 As shown: The machine includes a frame 15 equipped with a magnetic system, and a trough with an upper feed port 10 at the upper end and a lower feed port 7 at the lower end. The trough is an inclined trough that gradually extends to the left from the top to the bottom. The length direction is defined as the direction of the trough's extension from the upper feed port to the lower feed port, and the direction perpendicular to the length direction is defined as the height direction.

[0031] A magnetic medium 5, with a length dimension greater than its height dimension, is disposed within the inner cavity of the tank. In this embodiment, the length dimension of the magnetic medium 5 is more than five times its height dimension. The magnetic medium 5 can generate a magnetic force on its surface in a magnetic field, which can attract magnetic minerals. The magnetic medium is generally made of magnetically conductive materials such as sheet-like mesh, rod-like, or steel wool-like materials, and the magnetic medium itself is existing technology. The magnetic medium has a smaller height in the direction of magnetic pole distance and a larger length in the direction of slurry flow. This significantly reduces electromagnetic power, increases the path length of the slurry through the magnetic medium, and improves the probability of magnetic adsorption, thereby improving the separation effect.

[0032] The magnetic system device includes a magnetic system frame plate 14 mounted on a frame and a left magnetic pole head 4 and a right magnetic pole head 13 mounted on the frame plate 14. The left and right magnetic pole heads 4 and 13 are located outside the tank and on opposite sides of the magnetic medium's height direction. A left excitation coil 6 with its axis extending along the height direction of the magnetic medium surrounds the left magnetic pole head, and a right excitation coil 12 with its right axis extending along the height direction of the magnetic medium surrounds the right magnetic pole head. The left and right excitation coils 6 and 12 are coaxially arranged. The magnetic medium is located in the sorting space formed between the left and right magnetic pole heads. In this embodiment, the magnetic field direction between the left and right magnetic pole heads is consistent with the height direction of the magnetic medium, i.e., perpendicular to the length direction of the magnetic medium. In other embodiments of the invention, the magnetic field direction between the left and right magnetic pole heads may also intersect the length direction of the magnetic medium at a certain angle, such as 5° to 89°.

[0033] When a direct current is applied to the excitation coil, the magnetic system continuously generates a magnetic field penetrating the magnetic medium within the sorting space formed between the two magnetic poles. The magnetic field strength can be adjusted by changing the number of turns of the excitation coil or the magnitude of the current. The excitation coil is made of pure copper or aluminum wound in the same direction, with insulating material between the turns. The excitation coil is cooled by oil or water. In other embodiments of the invention, only one left-side excitation coil and one right-side excitation coil may be provided.

[0034] In this embodiment, the tank 11 is a stainless steel welded component. The tank 11 includes a central tank section 16 located in the sorting space and an upper tank section 17 and a lower tank section 18 disposed at the upper and lower ends of the central tank section. The bottom walls of the central tank section 16, the upper tank section 17, and the lower tank section 18 are arranged flush. The top wall height of the central tank section is higher than the top wall height of the upper tank section and the top wall height of the lower tank section, respectively. The magnetic medium 5 is disposed in the central tank section 16, and the height of the magnetic medium is less than the height of the central tank section. The periodic height magnetic separator also includes a magnetic medium lifting mechanism for driving the magnetic medium to reciprocate along the height direction in the central tank section. During the reciprocating movement of the magnetic medium along the height direction, there are adsorption stations at the bottom of the middle tank section and unloading stations at the top of the middle tank section. At the unloading station, an unloading channel 19 extending along the length of the tank is formed between the bottom of the magnetic medium and the bottom wall of the middle tank section. A baffle 3 arranged along the length of the magnetic medium is fixed at the upper end of the magnetic medium. The two ends of the baffle 3 along the length direction are used to contact and cooperate with the two ends of the middle tank section 16 along the length direction to prevent the slurry from entering the space between the top of the magnetic medium and the top of the middle tank section during the adsorption station, thereby preventing the slurry from being discharged directly without adsorption.

[0035] The left magnetic pole head 4 is provided with a left magnetic pole head guide hole. A transmission rod 2, whose lower end is connected to the magnetic medium, is sealed and guided within the left magnetic pole head guide hole. The magnetic medium lifting mechanism is connected to the upper end of the transmission rod to drive the magnetic medium to reciprocate within the middle tank section via the transmission rod. In this embodiment, the magnetic medium lifting mechanism is a pneumatic cylinder type lifting mechanism, which includes a pneumatic cylinder 1. The piston rod of the pneumatic cylinder is connected to the magnetic medium via the transmission rod 2. In other embodiments of the present invention, the magnetic medium lifting mechanism can also be a hydraulic cylinder type lifting mechanism, an electric push rod type lifting mechanism, or other lifting mechanisms capable of carrying the magnetic medium to reciprocate in the height direction via the transmission rod.

[0036] In this embodiment, the installation angle of the magnetic system relative to the frame is adjustable, thereby adjusting the tilt angle of the tank and the orientation of the excitation coil axis. The installation angle of the magnetic system can be adjusted according to the properties of the slurry.

[0037] An upper piping system 9 is connected to the upper feed inlet of the tank, and a lower piping system 22 is connected to the lower feed inlet of the tank. The upper piping system includes a ore water inlet 20 and a feed inlet 21, and the lower piping system includes a magnetic outlet 24 and a non-magnetic outlet 23. Each inlet and outlet is equipped with a solenoid valve. In other embodiments of the invention, the ore water inlet and the feed inlet may also be located on the lower piping system.

[0038] The periodic high gradient magnetic separator in this invention operates on a periodic intermittent system. Its working state is divided into a magnetic separation stage and an unloading stage. The two stages alternate, and one magnetic separation stage and one unloading stage constitute one operating cycle, which is repeated repeatedly.

[0039] Magnetic separation stage:

[0040] 1. Open the magnetic field:

[0041] (1) Turn on the excitation coil cooling device and connect the DC power supply of the excitation coil. The magnetic field that penetrates the magnetic medium is continuously generated in the sorting space formed between the two magnetic poles in the magnetic system device. The magnetic field strength can be set by adjusting the current. The magnetic medium is magnetized in the magnetic field to form a high magnetic field gradient.

[0042] (2) At this time, the magnetic medium lifting mechanism does not move, the magnetic medium in the tank is in close contact with the bottom inclined plate of the tank, and the baffle above the magnetic medium can block the gap above the magnetic medium to prevent the slurry from entering between the magnetic medium and the top of the middle section of the tank.

[0043] 2. Formation of a liquid surface:

[0044] (3) The water supply valve at the mine water inlet of the pipeline system is open, the ore supply pipeline valve at the ore supply inlet is closed, the non-magnetic pipeline valve at the non-magnetic material outlet is closed, and the magnetic pipeline valve at the magnetic material outlet is closed.

[0045] (4) When the liquid level exceeds the magnetic medium and reaches the predetermined liquid level, the water supply valve is closed.

[0046] 3. Magnetic separation:

[0047] (4) When the feed pipeline valve is opened and the non-magnetic pipeline valve is opened, the raw ore is fed in from the feed inlet and flows into the tank from the upper end of the tank through the upper pipeline system.

[0048] (5) The slurry passes through the magnetic medium. Magnetic materials are attracted to the surface of the magnetic medium by the magnetic field force, while non-magnetic materials are discharged through the magnetic medium and the lower feed port, becoming concentrate, thus achieving magnetic separation of minerals. During the magnetic separation process, the cylinder maintains a certain slurry level.

[0049] Unloading stage:

[0050] After magnetic separation is completed, the unloading stage begins.

[0051] 1. Non-magnetic ore backflow:

[0052] (1) When the feed pipeline valve is closed, the non-magnetic minerals are discharged. At the same time, the magnetic medium lifting mechanism is activated to lift the magnetic medium, and a ore unloading channel is formed between the magnetic medium and the bottom inclined plate of the tank.

[0053] 2. Turn off the magnetic field:

[0054] (2) When the excitation coil power supply is cut off, no magnetic field is generated in the sorting space.

[0055] 3. Unloading ore:

[0056] (3) The water supply valve is open, the valve of the non-magnetic pipe is closed, and the valve of the magnetic pipe remains closed.

[0057] (4) The ore unloading water is fed into the tank and filled with the entire tank through the magnetic medium.

[0058] (5) At this time, the valve of the magnetic material pipeline is opened.

[0059] (6) The magnetic minerals adsorbed on the surface of the magnetic medium are washed away by the water flow and fall off. Under the action of gravity, some of the magnetic minerals pass through the magnetic medium along the direction of the water flow, while most of the magnetic minerals fall onto the inclined plate at the bottom of the tank and are quickly discharged from the unloading channel, thus achieving fast and effective unloading and solving the problem of magnetic medium blockage.

[0060] (7) The unloading process can be repeated more than once, making the unloading more thorough.

[0061] The magnetic separation and unloading stages alternate repeatedly, and the entire process is controlled by an intelligent electrical control cabinet. The timing of magnetic separation and unloading, the liquid level, and the magnetic field strength can be set to ensure stable and excellent separation performance.

[0062] This invention is not limited to feeding ore from the top; the design of the pipeline can also be changed to feed ore from the bottom while keeping the magnetic system, excitation coil, and tank unchanged.

[0063] In the foregoing description of this specification, unless otherwise expressly specified and limited, the terms "fixed," "installed," "connected," or "linked" should be interpreted broadly. For example, the term "linked" can refer to 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; or it can refer to the internal communication of two components or the interaction between two components. Therefore, unless otherwise expressly limited in this specification, those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0064] Based on the above description in this specification, those skilled in the art will also understand that terms used, such as "upper," "lower," "front," "rear," "left," "right," "length," "width," "thickness," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," "center," "longitudinal," "transverse," "clockwise," or "counterclockwise," are terms indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings of this specification. They are only for the purpose of facilitating the explanation of the present invention and simplifying the description, and do not imply that the devices or elements involved must have the specific orientation, or be constructed and operated in a specific orientation. Therefore, the above-mentioned orientation or positional relationship terms should not be understood or interpreted as limitations on the present invention.

[0065] Furthermore, the terms "first" or "second," etc., used in this specification to refer to numbers or ordinal numbers are for descriptive purposes only and should not be construed as indicating, explicitly or implicitly, relative importance or specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this specification, "a plurality of" means at least two, such as two, three, or more, unless otherwise explicitly specified.

[0066] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A periodic high-gradient magnetic separator, comprising a frame equipped with a magnetic system, characterized in that: It also includes a trough with an upper feed inlet and a lower feed inlet, the trough being inclined and extending gradually to the left from top to bottom. The direction from the upper feed inlet to the lower feed inlet is defined as the length direction, and the direction perpendicular to the length direction is defined as the height direction. A magnetic medium with a length dimension larger than the height dimension is placed in the inner cavity of the trough. The magnetic system device includes a magnetic system frame plate and a left magnetic pole head and a right magnetic pole head disposed on the magnetic system frame plate. The left and right magnetic pole heads are located outside the trough and on opposite sides of the height direction of the magnetic medium. An excitation coil with an axis extending along the height direction of the magnetic medium is surrounded by the left and / or right magnetic pole heads. The magnetic medium is located in the sorting space formed between the left and right magnetic pole heads. The magnetic field direction between the left and right magnetic pole heads is perpendicular to or intersects the length direction of the magnetic medium. The tank includes a central tank section located in the sorting space and upper and lower tank sections located at the upper and lower ends of the central tank section. The bottom walls of the central, upper, and lower tank sections are flush. The top wall height of the central tank section is higher than that of the upper and lower tank sections, respectively. The magnetic medium is placed in the central tank section, and its height is less than that of the central tank section. The periodic height magnetic separator also includes a magnetic medium lifting mechanism for driving the magnetic medium to reciprocate along the height direction in the central tank section. During the re-movement process, there is an adsorption station at the bottom of the middle tank section in the height direction and an unloading station at the top of the middle tank section in the height direction. At the unloading station, an unloading channel extending along the length of the tank is formed between the bottom of the magnetic medium and the bottom wall of the middle tank section. A baffle arranged along the length of the magnetic medium is fixed at the upper end of the magnetic medium in the height direction. The two ends of the baffle in the length direction are used to contact and cooperate with the two ends of the middle tank section in the length direction to prevent the slurry from entering the space between the top of the magnetic medium and the top of the middle tank section in the height direction during the adsorption station.

2. The periodic high-gradient magnetic separator according to claim 1, characterized in that: The length dimension of the magnetic medium is more than five times its height dimension.

3. The periodic high-gradient magnetic separator according to claim 1, characterized in that: The installation angle of the magnetic system relative to the frame is adjustable, thereby adjusting the tilt angle of the tank and the orientation of the excitation coil axis.

4. The periodic high-gradient magnetic separator according to claim 1, characterized in that: The excitation coil includes a left excitation coil wrapped around the left magnetic pole head and a right excitation coil wrapped around the right magnetic pole head, with the left and right excitation coils arranged on the same axis.

5. The periodic high-gradient magnetic separator according to claim 1, characterized in that: The left magnetic pole head is provided with a left magnetic pole head guide hole. A transmission rod connected to the magnetic medium at its lower end is installed in the left magnetic pole head guide hole. The magnetic medium lifting mechanism is connected to the upper end of the transmission rod so as to drive the magnetic medium to reciprocate in the middle tank section through the transmission rod.

6. The periodic high-gradient magnetic separator according to claim 5, characterized in that: The magnetic medium lifting mechanism can be a pneumatic cylinder type lifting mechanism, a hydraulic cylinder type lifting mechanism, or an electric push rod type lifting mechanism.

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