A vertical ring magnetic separator employing a saddle-shaped coil and its magnetic separation method

Abstract

This invention discloses a vertical ring magnetic separator and its magnetic separation method using a saddle-shaped coil, relating to the field of mining and metallurgical technology. The device includes an overall support frame, a magnet system, a rotating ring, a feeding assembly, and a discharging assembly. The magnet system is fixedly mounted on the overall support frame and surrounds part of the rotating ring. The magnet system includes at least one saddle-shaped coil, the arc-shaped surface of which is adapted to the ring surface of the rotating ring. By using a saddle-shaped coil, its arc-shaped working surface is spatially adapted to the annular contour of the rotating ring, fundamentally optimizing the magnetic field distribution. This allows the magnetic field energy to be highly concentrated and precisely applied to the magnetic medium filling the rotating ring, achieving a field strength far exceeding that of traditional racetrack-shaped coils. This significantly improves the collection ability for weakly magnetic minerals. The optimized magnetic field further reduces dependence on the magnetic yoke, resulting in a lighter overall structure and lower cost for the magnet system.

Description

Technical Field

[0001] This invention relates to the field of mining and metallurgical technology, and in particular to a vertical ring magnetic separator and its magnetic separation method using a saddle-shaped coil. Background Technology

[0002] Vertical ring high-gradient magnetic separators are key equipment for separating weakly magnetic minerals and purifying non-metallic minerals by removing iron. They are widely used in mining, metallurgy, and environmental protection. Their basic working principle involves using a strong magnetic field to magnetize the separating medium in a vertical rotating ring, thereby generating a high-gradient magnetic field on the medium's surface. This magnetic field adsorbs magnetic particles from the slurry, and the rotation of the ring separates the magnetic from the non-magnetic particles, achieving effective separation. The core performance indicators of the equipment mainly include background field strength, the uniformity and concentration of the magnetic field within the separating area, and the economic efficiency and reliability of operation.

[0003] Currently, mainstream high-field-strength vertical ring magnetic separators in the industry generally use a racetrack-shaped coil structure to generate the background magnetic field. In this structure, the vertical rotating ring needs to pass through the internal cavity surrounded by the racetrack-shaped coil. However, this coil structure has some inherent technical defects: First, the configuration of the magnetic field it generates does not match the actual arc-shaped working path of the rotating ring well, resulting in a large amount of magnetic energy being dispersed in ineffective sorting areas, leading to low magnetic field utilization. To effectively concentrate and confine the magnetic lines of force within the sorting space, a large number of bulky magnetic yokes must be configured, which not only results in a large equipment size and high material costs but also increases the difficulty of manufacturing and transportation. Second, due to the inherent characteristics of the racetrack-shaped coil structure, its magnetic field distribution along the direction of rotation is often uneven, with differences in field strength between the two ends and the middle. Even with compensation through additional magnetic poles, it is difficult to achieve a highly uniform and efficient magnetic field along the entire sorting path. In addition, the complex shape of the racetrack-shaped coil, the high requirements of the winding process, and the long production cycle also restrict further optimization of production efficiency and manufacturing costs.

[0004] Therefore, there is an urgent need in this field for a novel magnetic system structure and magnetic separation device that can fundamentally overcome the problems caused by racetrack-shaped coils, such as mismatch between magnetic field distribution and working path, low space utilization, high yoke dependence, and complex manufacturing, so as to promote the development of vertical ring high gradient magnetic separation technology towards higher efficiency, lower cost, and more compact structure. Summary of the Invention

[0005] This invention provides a vertical ring magnetic separator using a saddle-shaped coil, which can solve the problems of mismatch between magnetic field distribution and working path, low space utilization, high yoke dependence and complex manufacturing caused by racetrack-shaped coils in the prior art.

[0006] A vertical ring magnetic separator employing a saddle-shaped coil includes an overall support, a magnet system, a rotating ring, a feeding assembly, and a discharging assembly. The magnet system is fixedly mounted on the overall support and surrounds a portion of the rotating ring. The magnet system includes at least one saddle-shaped coil, the arcuate surface of which is adapted to the ring surface of the rotating ring. The rotating ring includes a hollow annular shell and a magnetic medium located inside it. The annular shell is vertically and rotatably mounted on the overall support, and multiple openings are provided on the annular shell. The magnetic medium is magnetically aroused by the magnetic field generated by the saddle-shaped coil. The feeding assembly includes a feeding hopper disposed inside the rotating ring and fixed relative to the overall support. The slurry in the feeding hopper passes through the corresponding openings in the vertical direction. The discharging assembly includes a flushing frame disposed outside the rotating ring and a magnetic material collecting hopper disposed inside the rotating ring. Both the flushing frame and the magnetic material collecting hopper are fixed relative to the magnet system.

[0007] Preferably, the magnet system further includes a magnetically conductive yoke, which is sleeved outside the saddle-shaped coil.

[0008] Preferably, the saddle-shaped coil is a superconducting coil, and the magnet system further includes an insulating Dewar for housing the superconducting coil and a refrigerator for cooling the superconducting coil below the superconducting critical temperature.

[0009] Preferably, the saddle-shaped coil is made of superconducting cable.

[0010] Preferably, the sidewall of the insulating Dewar has a channel hole corresponding to the feed and discharge area of ​​the rotating ring.

[0011] Preferably, the saddle-shaped coil is an electromagnetic coil wound with copper wire or copper tube, and the magnet system further includes a coil housing for housing the electromagnetic coil and a cooling pipe for cooling the electromagnetic coil.

[0012] Preferably, the device also includes a friction wheel that contacts the outer edge of the rotating ring and is driven to rotate by friction, and a non-magnetic collection hopper located at the bottom of the magnet system is mounted on the overall support.

[0013] Preferably, the rotating ring further includes multiple partitions, which are equally spaced inside the annular outer shell, and the magnetic medium is filled between adjacent partitions.

[0014] Preferably, the unloading assembly further includes a spray pipe disposed inside a rinsing frame located on the outer side of the top of the rotating ring, and the magnetic material collection hopper located on the inner side of the top of the rotating ring.

[0015] A vertical ring magnetic separation method using a saddle-shaped coil includes:

[0016] S1: Excite the saddle-shaped coil to form a magnetic field in the area surrounded by the rotating ring, so that the magnetic medium in the rotating ring in that area is magnetized.

[0017] S2: Drive the rotating ring to rotate vertically, so that the slurry is fed in through the feed hopper and flows from top to bottom through the magnetic medium in the magnetic field under the action of gravity. Magnetic minerals are adsorbed on the magnetic medium, and non-magnetic minerals are discharged through the outlet.

[0018] S3: After the rotating ring carrying the magnetic minerals rotates to the unloading area where it is no longer in the magnetic field, the ring is sprayed with flushing liquid through the flushing frame to wash the magnetic minerals off the magnetic medium and make them fall into the magnetic material collection hopper to complete the collection.

[0019] The present invention has at least the following beneficial effects:

[0020] In this invention, by employing a saddle-shaped coil, the arc-shaped working surface is spatially adapted to the annular contour of the rotating ring, fundamentally optimizing the magnetic field distribution. This allows the magnetic field energy to be highly concentrated and precisely applied to the magnetic medium filling the rotating ring, thereby achieving a field strength far exceeding that of traditional racetrack-shaped coils. This significantly improves the collection capacity for weakly magnetic minerals. The optimized magnetic field further reduces the dependence on the magnetic yoke, resulting in a lighter overall weight and lower cost for the magnet system. Simultaneously, the feeding hopper fixed inside the rotating ring in the feeding assembly ensures that the slurry can pass vertically through the opening and flow evenly through the magnetized medium, achieving efficient adsorption. The flushing frame and magnetic material collection hopper in the unloading assembly, which are staggered from the magnetic field area, utilize the demagnetization characteristic of the medium after the rotating ring rotates to the non-magnetic zone to achieve efficient recovery of magnetic minerals through flushing. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of a vertical ring magnetic separator using a saddle-shaped coil according to an embodiment of the present invention.

[0022] Figure 2 This is a schematic diagram of the saddle-shaped coil in one embodiment of the present invention;

[0023] Figure 3 This is a schematic diagram of the structure of the magnetically conductive yoke in one embodiment of the present invention;

[0024] Figure 4 This is a schematic diagram of the structure of an insulating Dewar in one embodiment of the present invention;

[0025] Figure 5 for Figure 4 A sectional view;

[0026] Figure 6 This is a schematic diagram of the coil housing structure in another embodiment of the present invention;

[0027] Figure 7 This is a schematic diagram of the rotating ring structure in one embodiment of the present invention;

[0028] Figure 8 This is a schematic diagram of the structure of the magnetic medium in one embodiment of the present invention;

[0029] Figure 9 The simulation diagram of the electric field strength of the saddle-shaped coil;

[0030] Figure 10 This is a simulation diagram of the electric field strength of a racetrack-shaped coil.

[0031] Explanation of reference numerals in the attached figures:

[0032] 1. Overall support frame; 2. Magnet system; 3. Rotary ring; 4. Feeding assembly; 5. Unloading assembly; 6. Friction wheel; 7. Non-magnetic collection hopper; 201. Saddle-shaped coil; 202. Magnetic yoke; 203. Insulating Dewar; 204. Refrigeration unit; 205. Coil housing; 206. Cooling pipe; 31. Annular housing; 32. Magnetic medium; 33. Through port; 34. Baffle; 41. Feeding hopper; 51. Washing frame; 52. Magnetic material collection hopper; 53. Spray pipe. Detailed Implementation

[0033] The specific embodiments of the present invention will be described in detail below, but it should be understood that the scope of protection of the present invention is not limited to the specific embodiments.

[0034] Example 1:

[0035] like Figure 1-3 As shown in the figure, an embodiment of the present invention provides a vertical ring magnetic separator using a saddle-shaped coil, comprising an overall support 1, a magnet system 2, a rotating ring 3, a feeding assembly 4, and a discharging assembly 5. The magnet system 2 is fixedly mounted on the overall support 1 and surrounds part of the rotating ring 3. The magnet system 2 includes at least one saddle-shaped coil 201, the arc-shaped surface of which faces the rotating ring 3 is adapted to the annular surface of the rotating ring 3. The rotating ring 3 includes a hollow annular shell 31 and a magnetic medium 32 located inside it, the annular shell 31 being vertically and rotatably mounted on the overall support 1. On the support 1, multiple openings 33 are provided on the annular outer shell 31. The magnetic medium 32 is magnetic under the influence of the magnetic field excited by the saddle-shaped coil 201. The feeding assembly 4 includes a feeding hopper 41 set inside the rotating ring 3 and fixed relative to the overall support 1. The slurry in the feeding hopper 41 passes through the corresponding openings 33 in the vertical direction. The unloading assembly 5 includes a flushing frame 51 set outside the rotating ring 3 and a magnetic material collecting hopper 52 set inside the rotating ring 3. Both the flushing frame 51 and the magnetic material collecting hopper 52 are fixed relative to the magnet system 2.

[0036] In this embodiment, by employing a saddle-shaped coil 201, its arc-shaped working surface is spatially adapted to the annular contour of the rotating ring 3, fundamentally optimizing the magnetic field distribution. This allows the magnetic field energy to be highly concentrated and precisely applied to the magnetic medium 32 filling the rotating ring 3, thereby achieving a field strength far exceeding that of traditional racetrack-shaped coils. This significantly improves the collection ability for weakly magnetic minerals. The optimized magnetic field further reduces the dependence on the magnetic yoke, resulting in a lighter overall weight and lower cost for the magnet system 2. Simultaneously, the feeding assembly 4, fixed to... The feed hopper 41 inside the rotating ring ensures that the slurry can pass vertically through the opening 33 and flow evenly through the magnetized medium, achieving efficient adsorption. Through the flushing frame 51 and the magnetic material collection hopper 52 in the unloading assembly 5, which are staggered from the magnetic field area, the flushing liquid sprayed by the flushing frame 51 breaks the residual adhesion between the magnetic minerals and the magnetic medium 32. Combined with the magnetic minerals falling naturally under their own gravity, they completely fall off the rotating ring 3 and accurately fall into the magnetic material collection hopper 52. The efficient recovery of magnetic minerals is achieved through flushing impact and gravity assistance.

[0037] like Figure 9 and Figure 10 The simulation results shown are for a saddle-shaped coil and a racetrack-shaped coil under the same current, similar wire usage, and without the addition of a yoke to adjust the magnetic field. The colors represent the corresponding magnetic field strengths.

[0038] It can be seen that the field strength of the saddle-shaped coil is a maximum of 3.3T at the loop and maintains a range of 2.5-3T at the center, while the field strength of the racetrack-shaped coil is about 0.6-1T at the loop, with severe magnetic field divergence, which is far from the required magnetic field. Therefore, the saddle-shaped coil can obtain a field strength far exceeding that of the traditional racetrack-shaped coil, significantly improving the ability to collect weakly magnetic minerals.

[0039] Specifically, the magnet system 2 also includes a magnetic yoke 202, which is sleeved on the outside of the saddle-shaped coil 201. The magnetic yoke 202 can effectively gather the magnetic field lines excited by the saddle-shaped coil 201 and guide them to the sorting area of ​​the rotating ring 3 through its own high magnetic permeability, avoiding the meaningless diffusion of magnetic field lines to the outside of the saddle-shaped coil 201, further improving the magnetic field utilization rate. With the compatibility between the working path of the saddle-shaped coil 201 and the rotating ring 3, the effect of the magnetic field being concentrated on the sorting area is more prominent, and the stability of the background field strength is further enhanced. At the same time, this sleeved structure does not need to rely on a large number of dispersed magnetic yoke components like traditional racetrack-shaped coils. It only needs to be adapted to the outer contour of the saddle-shaped coil to achieve efficient magnetic concentration. This not only reduces the total amount of magnetic yoke 202 used, reducing material costs and equipment weight, but also simplifies the assembly process of the magnet system 2.

[0040] Among them, combined Figure 9The magnetic field distribution is optimized by using a saddle-shaped coil 201, which resembles a saddle or a curved tile. Its curved surface can be precisely machined to maintain a constant and small distance from the curved profile of the rotating ring 3. This allows the coil's conductors to tightly track and wrap around the working path of the rotating ring 3. Almost all the conductors of the saddle-shaped coil 201 are positioned close to the working path of the rotating ring 3, maximizing the concentration of the magnetic field energy generated by the current near the rotating ring, rather than dispersing it in a large space. In the saddle-shaped coil 201, the conductor portion closest to the rotating ring 3 (i.e., the curved surface portion) is closest to the magnetic medium 32 within the rotating ring 3. These conductors generate the strongest magnetic field, and due to the guidance of the curved shape, their magnetic field direction can penetrate the cross-section of the rotating ring and the magnetic medium 32 more perpendicularly or at a more effective angle. By optimizing the conductor layout and utilizing the principle of magnetic field superposition, a high-intensity, ideally oriented concentrated magnetic field is formed in the region of the rotating ring 3 surrounded by the saddle-shaped coil 201, while the external magnetic field is very weak.

[0041] In other embodiments, the saddle-shaped coil 201 can also be designed on one side of the inner ring of the rotating ring 3. In this case, the convex arc surface of the saddle-shaped coil 201 is adapted to the inner ring surface of the rotating ring 3. The coil and yoke are concentrated on the inner side of the coil, making the magnet system more inwardly convergent. This not only saves yoke material but also greatly reduces the external size and floor space of the equipment, providing a more advantageous solution for realizing the miniaturization, lightweighting and modular design of the equipment. The saddle-shaped coil 201 can also be designed as two coils, one on the inner ring side and the other on the outer ring side of the rotating ring 3. One saddle-shaped coil 201 has its concave surface adapted to the outer ring surface of the rotating ring 3, while the other has its convex surface adapted to the inner ring surface. Together, they form a near-perfect closed magnetic circuit. When the two coils are energized with current in the same direction, their excited magnetic fields superimpose in the same direction within the annular working space of the rotating ring, easily raising the background field strength to a level unattainable by conventional single-sided coils. Simultaneously, it creates an extremely uniform magnetic field distribution along the entire sorting path, fundamentally eliminating magnetic field edge effects. This maximizes the power density and efficiency of the magnet system.

[0042] like Figure 4 and Figure 5 As shown, the saddle-shaped coil 201 is a superconducting coil, and the magnet system 2 also includes an insulating Dewar 203 for housing the superconducting coil and a refrigerator 204 for cooling the superconducting coil to below the superconducting critical temperature.

[0043] Specifically, when the saddle-shaped coil 201 is wound with superconducting cable and used as a superconducting coil, after the temperature of its temperature is reduced to the superconducting critical temperature (e.g., 4-5K) by the refrigerator 204, there is no resistance loss during operation. It can not only stably excite a high field strength magnetic field of 2T, but also significantly reduce excitation power and power consumption. The thermal dewar 203 can maintain the low temperature superconducting environment of the coil for a long time, further reducing energy consumption, while avoiding the impact of the low temperature environment on other components of the equipment. Moreover, the material characteristics of the superconducting cable are highly compatible with the saddle-shaped structure, and there is no need for complex bending during winding, which shortens the winding time and improves the consistency of coil performance.

[0044] Among them, the saddle-shaped coil 201 is made of superconducting cable. The saddle-shaped coil 201 is a superconducting coil. It is paired with the thermal insulation Dewar 203 that houses the coil and the cooling refrigerator 204 in the magnet system 2. From the perspective of energy consumption cost, conventional electromagnets require a lot of electrical energy to maintain the magnetic field, while superconductors require very little electrical energy, which greatly reduces electricity costs and the energy consumption reduction is very significant. At the same time, the thermal insulation Dewar 203 can maintain the low temperature environment of the coil for a long time, further reducing energy consumption. Moreover, the saddle-shaped structure allows the magnetic field of the coil to be concentrated on the rotating sorting area, without the need for a large number of magnetic yokes 202. While achieving low energy consumption, it still ensures high field strength, taking into account both economy and sorting performance, and is suitable for the needs of large-scale continuous production.

[0045] The insulated Dewar 203 has a channel hole corresponding to the feed and discharge area of ​​the rotating ring 3, which facilitates the flow of slurry into and out of the rotating ring 3.

[0046] like Figure 1 As shown, the device also includes a friction wheel 6, which contacts the outer edge of the rotating ring 3 and is driven to rotate by friction. A non-magnetic collection hopper 7 located at the bottom of the magnet system 2 is installed on the overall support 1.

[0047] Specifically, by using the friction drive method of outer edge contact through the friction wheel 6, there is no need to set up a complex shaft transmission structure inside the rotating ring 3. This saves internal space of the rotating ring, reduces equipment assembly difficulty and maintenance costs, and can flexibly adapt to the vertical rotation requirements of the rotating ring 3. The overall bracket 1 provides a stable installation foundation for the non-magnetic collection hopper 7, making it accurately located at the bottom of the magnet system 2. It can collect non-magnetic minerals separated by the rotating ring 3 in the magnetic field area in a timely manner. With the stable rotation of the rotating ring 3 driven by the friction wheel, an efficient process of mineral sorting and immediate collection of non-magnetic minerals is formed, reducing space occupation.

[0048] like Figure 1 As shown, the feeding assembly 4 includes a feeding hopper 41, which is installed inside the rotating ring 3 and located directly above the magnet system 2.

[0049] Specifically, it allows the slurry to immediately enter the high-intensity magnetic field coverage area excited by the magnet system 2 after being discharged from the feed hopper 41, achieving rapid adsorption of magnetic particles without additional transmission distance, effectively shortening the feeding to sorting interval and improving sorting efficiency; in addition, it can ensure that the slurry is evenly distributed on the magnetic medium 32 in the rotating ring 3, avoiding the problem of some slurry not participating in the sorting due to slurry deviation.

[0050] like Figure 7 and Figure 8 As shown, the rotating ring 3 also includes a plurality of partitions 34, which are equally spaced inside the annular outer shell 31, and the magnetic medium 32 is filled between adjacent partitions 34.

[0051] Specifically, the annular shell 31 is divided into multiple independent spaces by multiple equally spaced partitions 34 inside the rotating ring 3, so that the magnetic medium 32 can be evenly filled between adjacent partitions 34. The equally spaced partitions 34 can fix the position of the magnetic medium 32, preventing the magnetic medium 32 from shifting or accumulating due to centrifugal force or slurry impact when the rotating ring 3 rotates vertically, ensuring that the magnetic medium 32 is always evenly distributed. In this way, the magnetic field excited by the saddle-shaped coil 201 in the magnet system 2 can act evenly on each magnetic medium 32, so that a stable high gradient magnetic field is generated on the surface of the magnetic medium 32, effectively avoiding sorting blind areas caused by uneven distribution of the magnetic medium 32 and improving the adsorption rate of weakly magnetic minerals.

[0052] The magnetic medium 32 is at least one of the following: magnetically conductive stainless steel wool, stainless steel round bar, stainless steel screen, stainless steel ball, corrugated plate or perforated plate.

[0053] like Figure 1 As shown, the unloading assembly 5 also includes a spray pipe 53, which is disposed inside the rinsing frame 51. The rinsing frame 51 is located on the outer side of the top of the rotating ring 3, and the magnetic material collection hopper 52 is located on the inner side of the top of the rotating ring 3.

[0054] Specifically, when the rotating ring 3 rotates to the top, it is no longer within the magnetic field coverage of the magnet system 2, and the magnetic medium 32 inside it has low magnetism. At this time, the spray pipe 53 in the top outer rinsing frame 51 can accurately spray high-speed water towards the rotating ring 3 to thoroughly wash off the magnetic minerals adsorbed on the magnetic medium 32, avoiding the magnetic mineral residue from affecting subsequent sorting. The magnetic material collection hopper 52 on the inner side of the top of the rotating ring 3 can directly receive the washed-off magnetic minerals. At the same time, the layout of outer rinsing and inner collection can prevent water and magnetic minerals from splashing onto other parts of the equipment, reducing the difficulty of cleaning the equipment. By cooperating with the stable rotation of the rotating ring 3, an efficient unloading process of demagnetization, rinsing, and collection is formed, which not only improves the recovery rate of magnetic minerals, but also ensures the purity of the collected magnetic minerals, further optimizing the overall sorting efficiency of the equipment and the working environment.

[0055] A vertical ring magnetic separation method using a saddle-shaped coil includes: S1: Exciting the saddle-shaped coil 201 to form a magnetic field in the area surrounded by the rotating ring 3, magnetizing the magnetic medium 32 inside the rotating ring 3 in that area; S2: Driving the rotating ring 3 to rotate vertically, so that the slurry is fed in through the feed hopper 41 and flows from top to bottom through the magnetic medium 32 in the magnetic field under the action of gravity, the magnetic minerals are adsorbed on the magnetic medium 32, and the non-magnetic minerals are discharged through the outlet 33; S3: After the rotating ring carrying the magnetic minerals rotates to the unloading area away from the magnetic field, the washing liquid is sprayed into the interior of the rotating ring 3 through the washing frame 51 to wash the magnetic minerals off the magnetic medium 32 and make the magnetic minerals fall into the magnetic material collection hopper 52 to complete the collection.

[0056] In this embodiment, when the saddle-shaped coil 201 is energized, its arc surface precisely matches the surface of the rotating ring 3. Combined with the magnetic focusing effect of the external magnetic yoke 202, a concentrated and uniform magnetic field can be formed in the area surrounded by the rotating ring 3, which fully magnetizes the internal magnetic medium 32, laying the foundation for a high-gradient magnetic field for subsequent sorting. By driving the rotating ring 3 to rotate vertically, the slurry is fed from the feed hopper 41 on the inner side of the rotating ring 3 and directly above the magnet system 2. Under the action of gravity, it flows from top to bottom through the magnetic medium 32, which not only prolongs the contact time between the slurry and the magnetized magnetic medium 32 and improves the adsorption rate of magnetic minerals, but also discharges non-magnetic minerals to the bottom non-magnetic collection hopper 7 in a timely manner through the opening 33 of the annular shell 31, avoiding the accumulation of non-magnetic minerals that affect sorting. As part of the rotating ring 3 rotates to the unloading area, the flushing frame 51 sprays flushing liquid into the interior of the rotating ring 3 in a directional manner. This, combined with the precise collection of magnetic materials in the inner magnetic material collection hopper 52, not only thoroughly flushes away magnetic minerals and reduces residues, but also avoids mineral mixing. Through the precise coordination of magnetic field design, feeding path and unloading sequence, a significant improvement in sorting efficiency, energy economy and operational reliability is achieved.

[0057] Example 2:

[0058] like Figure 1 and Figure 6 As shown, the saddle-shaped coil 201 is an electromagnetic coil wound with copper wire or copper tube. The magnet system 2 also includes a coil housing 205 for housing the electromagnetic coil and a cooling pipe 206 for cooling the electromagnetic coil.

[0059] In this embodiment, building upon the principle that the arc-shaped working surface of the saddle-shaped coil 201 closely matches the contour of the rotating ring 3, thereby concentrating magnetic field energy onto the magnetic medium 32, the complex low-temperature structure and expensive materials required for superconducting solutions are successfully avoided by employing mature and low-cost copper wire or copper tubes to wind the electromagnetic coil, supplemented by a conventional cooling system consisting of a coil shell 205 and cooling pipes 206. While significantly improving magnetic field utilization and sorting efficiency, this embodiment drastically reduces the manufacturing cost and technical threshold of the equipment. Its compact structure, reliable operation, and convenient maintenance provide the market with a solution that achieves an excellent balance between high performance and superior cost-effectiveness.

[0060] The above-disclosed embodiments are merely a few specific examples of the present invention. However, the embodiments of the present invention are not limited thereto, and any variations that can be conceived by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. A magnetic separation device employing a saddle coil, characterised in that: The application relates to a magnetic medium separation device, which comprises a whole support (1), a magnet system (2), a rotating ring (3), a feeding assembly (4) and a discharging assembly (5), wherein the magnet system (2) is fixedly arranged on the whole support (1) and surrounds part of the rotating ring (3). The magnet system (2) comprises at least one saddle-shaped coil (201), which is matched with the surface of the rotating ring (3) and is arranged on the surface of the rotating ring (3). The rotating ring (3) comprises a hollow annular shell (31) and a magnetic medium (32) arranged in the annular shell (31), the annular shell (31) is vertically rotatably arranged on the whole support (1), a plurality of through holes (33) are formed in the annular shell (31), and the magnetic medium (32) is magnetic under the action of a magnetic field generated by the saddle-shaped coil (201). The feeding assembly (4) comprises a feeding hopper (41) arranged in the rotating ring (3) and fixed relative to the whole support (1), and slurry in the feeding hopper (41) passes through corresponding through holes (33) in the up-down direction. The discharging assembly (5) comprises a flushing frame (51) arranged outside the rotating ring (3) and a magnetic material collecting hopper (52) arranged inside the rotating ring (3), and the flushing frame (51) and the magnetic material collecting hopper (52) are fixed relative to the magnet system (2). The magnet system (2) further comprises a magnetic yoke (202) arranged outside the saddle-shaped coil (201).

2. A magnetic vertical ring separation device employing saddle coils as claimed in claim 1, characterized in that, The saddle-shaped coil (201) is a superconducting coil, the magnet system (2) further comprises an adiabatic Dewar (203) for accommodating the superconducting coil and a refrigerator (204) for cooling the superconducting coil to below a superconducting critical temperature.

3. A magnetic vertical ring separation device employing saddle coils as claimed in claim 2, characterized in that, The saddle-shaped coil (201) is wound by a superconducting cable.

4. The magnetic vertical ring separation device employing saddle coils as claimed in claim 2, wherein, A side wall of the adiabatic Dewar (203) is provided with a through hole corresponding to an inlet and outlet area of the rotating ring (3).

5. The magnetic vertical ring separation device employing saddle coils as claimed in claim 1, wherein, The saddle-shaped coil (201) is an electromagnetic coil wound by a copper wire or a copper pipe, the magnet system (2) further comprises a coil shell (205) for accommodating the electromagnetic coil and a cooling pipeline (206) for cooling the electromagnetic coil.

6. The magnetic vertical ring separation device employing saddle coils as claimed in claim 1, wherein, The application further comprises a friction wheel (6) in contact with the outer edge of the rotating ring (3) and driven to rotate by friction, and a non-magnetic collecting hopper (7) is arranged at the bottom of the magnet system (2) on the whole support (1).

7. The magnetic vertical ring separation device employing saddle coils as claimed in claim 1, wherein, The rotating ring (3) further comprises a plurality of partitions (34) arranged at equal intervals in the annular shell (31), and the magnetic medium (32) is filled between adjacent partitions (34).

8. The magnetic vertical ring separation device employing saddle coils as claimed in claim 1, wherein, The discharging assembly (5) further comprises a spray pipe (53) arranged in the flushing frame (51), the flushing frame (51) is arranged outside the top of the rotating ring (3), and the magnetic material collecting hopper (52) is arranged inside the top of the rotating ring (3).

9. A method of vertical ring magnetic separation with saddle coils, based on a vertical ring magnetic separation device with saddle coils according to any one of claims 1 to 8, characterized in that, The application relates to a magnetic medium separation device, which comprises a whole support (1), a magnet system (2), a rotating ring (3), a feeding assembly (4) and a discharging assembly (5), wherein the magnet system (2) is fixedly arranged on the whole support (1) and surrounds part of the rotating ring (3). S1: excite the saddle coil (201) to form a magnetic field in the area surrounded by the rotating ring (3), and magnetize the magnetic medium (32) in the rotating ring (3); S2: drive the rotating ring (3) to rotate vertically, so that the ore pulp is fed through the feeding hopper (41) and flows from top to bottom through the magnetic medium (32) in the magnetic field under the action of gravity, and the magnetic minerals are adsorbed on the magnetic medium (32), and the non-magnetic minerals are discharged through the through hole (33); S3: after the rotating ring part carrying the magnetic minerals rotates to the unloading area away from the magnetic field, the flushing box (51) sprays flushing liquid into the rotating ring (3) to wash off the magnetic minerals from the magnetic medium (32), and the magnetic minerals fall into the magnetic material collecting hopper (52) to complete the collection.

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