Anti-clogging magnetic medium box for vertical ring high-gradient magnetic separator

Abstract

The present invention provides an anti-blocking magnetic medium box for a vertical ring high-gradient magnetic separator. On the basis of the traditional magnetic medium box, the channels formed between two adjacent magnetic medium rods in the lowermost layer are arranged in a form of uniform upward distribution or gradual expansion. At the same time, the cross-sectional diameter of the magnetic medium rods increases layer by layer from top to bottom. A support plate is also arranged between the sieve hole plates, and perforations corresponding to the sieve holes one by one are arranged on the support plate. The support plate serves as a sacrificial anode. The present invention can avoid the deformation of the funnel-shaped channels formed by the circular magnetic medium rods due to the extrusion of ore particles and the entry of ore particles into the magnetic medium box; when facing water at the top of the ore unloading area, it can reduce the attenuation of the ore unloading water pressure, make the water flow area decrease layer by layer and increase the flow velocity, and improve the flushing effect on the magnetic medium rods in each layer at the bottom; through the support plate serving as a sacrificial anode, the corrosion of the anti-corrosion layer coated and electroplated on the magnetic medium rods by ore particles is slowed down.

Description

Technical Field

[0001] The present invention relates to the technical field of magnetic separation equipment, and particularly relates to an anti-clogging magnetic medium box for a vertical ring high-gradient magnetic separator. Background Art

[0002] As shown in the traditional vertical ring high-gradient magnetic separator magnetic medium box Figure 3 Several magnetic medium rods 2 with the same material, length, and diameter are passed through the sieve holes of several non-magnetic stainless steel sieve plates 1. The aperture of the sieve holes on the sieve plate 1 is equal to the diameter of the magnetic medium rod 2 and is distributed in a rectangular array. It is welded into a cuboid box structure by argon arc welding. Support ears 3 are welded on the upper parts of both sides, and the magnetic medium box is fixed on the vertical ring 4 through the support ears 3 with bolts.

[0003] The vertical ring high-gradient magnetic separator adopts the technologies of rotating the ring vertically and flushing the concentrate in reverse. Several magnetic medium boxes are embedded in the vertical rotating ring. The pulp is fed from the feed hopper and flows through the rotating ring along the gap of the upper yoke. The pulp flows into the magnetic medium box from the bottom of the magnetic medium box. The magnetic medium rods in the rotating ring are magnetized in the magnetic field, and a high-gradient magnetic field is formed on the surface of the magnetic medium rods. The magnetic particles in the pulp are adsorbed on the surface of the magnetic medium rods and are carried to the non-magnetic field area at the top as the rotating ring rotates. The ore discharging and flushing water flushes into the medium box from the top of the magnetic medium box, and the magnetic particles adsorbed on the medium rods are flushed into the concentrate hopper to form concentrate. The non-magnetic particles flow through the magnetic medium box and then flow into the tailing hopper along the gap of the lower yoke and are discharged to form tailings; the washed magnetic medium re-enters the ore particle separation area with the rotating ring, thereby realizing the continuous separation of magnetic particles and non-magnetic particles. Due to the following reasons, the magnetic medium box is blocked:

[0004] In the ore liquid of different quality ores, the corresponding beneficiation agents are added, and the ore liquid is acidic or alkaline. The magnetic stainless steel medium rods and the ferromagnetic ore particles adsorbed on the surface of the medium rods are easily corroded in the ore liquid. The surface of the medium rods gradually becomes rough due to corrosion, and it is difficult to wash the adsorbed substances on the rough surface of the medium rods clean during ore discharging, resulting in the accumulation of adsorbed substances over time.

[0005] The shapes of the ore particles are irregular, and the particle sizes in different directions are different. The particles with the maximum particle size smaller than the surface spacing of the medium rods can easily enter and be discharged from the magnetic medium box, while the particles with the maximum particle size larger than the surface spacing of the medium rods are difficult to discharge once they enter the magnetic medium box and will be jammed between the medium rods. When the magnetic medium box is in the ore separation area, there are two possibilities for the ore particles with the maximum particle size larger than the surface spacing of the medium rods to enter the magnetic medium box. One is that when the minimum particle size direction of the ore particles with the minimum particle size smaller than the surface spacing of the medium rods is parallel to the radial direction of the medium rods, it is easy to enter the magnetic medium box through the inner ring medium layer; the other is that when the minimum particle size direction of the ore particles with the minimum particle size equal to or slightly larger than the medium rod spacing is parallel to the radial direction of the medium rods, the adjacent two medium rods are deformed and squeezed into the magnetic medium box.

[0006] As the rotating ring rotates one full circle, the magnitude and direction of the magnetic force on the medium rod alternate and change over a period. Under the combined action of the magnetic force, the ore liquid pressure, the supporting force of the sieve hole plate, etc., the medium rod will deform in an arc shape perpendicular to the axial direction with the change of the combined force, and even undergo plastic deformation. The distance between adjacent magnetic medium rods changes. The smaller the ratio of the cross-sectional diameter of the medium rod to the distance between adjacent support points, the more obvious the change in the distance, resulting in uneven density of the medium rods. Ore particles with the smallest particle size larger than the designed value of the surface spacing of the medium rods are likely to pass through the bottommost layer of the medium rod layer and enter the magnetic medium box. Once ore particles with the largest particle size smaller than the designed value of the surface spacing of the medium rods enter the medium box, they will also form jams after the deformation of the medium rods.

[0007] The vertical ring high-gradient magnetic separator adopts the reverse ore discharging technology. When the magnetic medium box is in the ore discharging area, the magnetic medium box is washed and discharged by the ore discharging water flowing from the top to the bottom. The ore discharging washing water column is scattered and reflected by the medium rods and their adsorbed substances layer by layer. The water pressure attenuates layer by layer from the top magnetic medium rod layer to the bottom. The more serious the blockage of the medium layer closer to the bottom, the smaller the ore discharging water pressure and the more difficult it is to wash clean, resulting in more serious hanging of materials on the medium rods after ore discharging. The so-called hanging of materials means that ferromagnetic ore particles, oxides and sediment remain on the surface of the medium rods after ore discharging.

[0008] The hanging of materials on the medium rods and the jamming of ore particles after ore discharging reduce the space between the medium rods, resulting in an increase in the resistance of the ore discharging water and a more serious attenuation of the water pressure, which further leads to an increase in the hanging of materials on the medium rods and the jamming of ore particles after ore discharging, forming a vicious cycle of blockage. This causes an increase in the corrosion area and depth of the medium rods in the magnetic medium box, the diffusion of the oxide layer attached to the surface, and the accumulation of ore particles, sediment and metal oxides between the medium rods over time. In some areas, the space between the medium rods is filled with ore particles, sediment and metal oxides and becomes blocked. The blockage situation gradually worsens from the top to the bottom of the magnetic medium box.

[0009] The medium rods in the blocked area lose the function of adsorbing ferromagnetic substances, and the ore separation ability of the magnetic separator decreases or even fails, and it is necessary to stop the machine regularly for cleaning or replace the magnetic medium box. Under continuous working conditions, the normal working time of the magnetic medium box does not exceed 100 days, and the cost of cleaning and replacing the magnetic medium box is high. Since the advent of the vertical ring high-gradient magnetic separator, the problem of magnetic medium blockage has been difficult to solve perfectly.

[0010] Patent CN210700604U discloses an anti-clogging high-recovery large-gap rod magnetic medium box for a vertical ring pulsating high-intensity magnetic separator. It uses a magnetic conductive stainless steel rod with the same circular cross-section shape, diameter, and length as the medium rod, forming multiple parallel layers of medium rods. The left and right gaps between adjacent magnetic medium rods in the same parallel layer are the same, and the left and right gaps between adjacent magnetic medium rods gradually expand from the outer parallel layer to the inner parallel layer. The upper and lower gaps between adjacent parallel layers also gradually expand from the outer parallel layer to the inner parallel layer. The variation in the distance between the medium rod layers and the variation in the inner layer gap result in a change in the number of medium rods in each layer and a misalignment of the medium rods between layers, which increases the attenuation of the ore discharge water pressure, making it more difficult to clean the medium rods near the bottom layer.

[0011] Patent CN210646801U discloses a non-clogging medium box for a vertical ring high-gradient magnetic separator. It uses a medium rod connector, which is fixed on the sieve hole plate. The two ends of the medium rod are inserted into the connector and elastically connected to the sieve hole plate. The aim is that when ore particles are jammed in the medium box, under the extrusion of the ore particles, through the vertical movement of the two ends of the medium rod perpendicular to the axial direction, the gap between the medium rods at the jamming point is changed, so that the jammed ore particles are discharged from the medium box. Since the inside of the placement groove of the connector cannot be sealed, the pulp will inevitably enter the connector and cannot be washed, and the internal parts are easily corroded and blocked by the pulp, causing the connector to lose its elasticity; even if the jammed ore particles can move between the layers in the medium box, it is difficult for them to pass through the magnetic medium box during a single beneficiation or a single ore discharge process. The ore discharge and beneficiation cause the ore particles to move back and forth in the magnetic medium box, and the jammed ore particles are still difficult to be discharged from the medium box.

[0012] Patent CN204724316U discloses a new type of steel wool magnetic medium box. The magnetic medium body is composed of a stainless steel medium rod and steel wool magnetic medium. By adding steel wool magnetic medium at the center of the magnetic medium box, due to the flexibility of the steel wool, it can have a certain amount of bending deformation. Non-magnetic coarse particles can directly flow into the lower part with the washing water in the separation area under the action of fluid force and gravity without causing blockage. However, problems such as anti-corrosion of the steel wool magnetic medium still need to be considered.

[0013] In short, for the magnetic medium box of the vertical ring high-gradient magnetic separator, it is necessary to break through problems such as anti-corrosion of the magnetic medium rod and the ore particles adsorbed on its surface, reducing the deformation of the medium rod during the beneficiation process, preventing ore particles with a maximum particle size larger than the surface gap of the medium rod from entering the medium box, ensuring that the ore particles entering the medium box can be smoothly discharged from the medium box without forming jams, and ensuring that each medium rod receives sufficient ore discharge water pressure for cleaning, in order to prevent the magnetic medium box from being clogged. Summary of the Invention

[0014] The present invention provides a magnetic medium box for a vertical ring high-gradient magnetic separator, aiming to overcome or improve the deficiencies of the above-mentioned existing technologies, prevent the magnetic medium box from being clogged as much as possible, extend the normal working time of the magnetic medium box, reduce the replacement and cleaning costs of the magnetic medium box, and improve the production efficiency of the magnetic separator.

[0015] To achieve the above object, the present invention provides an anti-clogging magnetic medium box for a vertical ring high-gradient magnetic separator, which includes a sieve hole plate and magnetic medium rods disposed between the sieve hole plates. The ends of the magnetic medium rods are inserted into the sieve holes of the sieve hole plate, and the channels formed between two adjacent magnetic medium rods in the lowermost layer are equally wide or expand upward.

[0016] Among them, the cross-section of the magnetic medium rod in the lowermost layer is a symmetrically closed shape with straight sides (such as a rectangle, a semi-circle, an isosceles trapezoid, an isosceles triangle, etc.).

[0017] Further, the cross-sections of the magnetic medium rods in other layers are circular, the diameter is not greater than the bottom side length of the magnetic medium rod in the lowermost layer, and the diameter of the upper layer is not greater than that of the lower layer.

[0018] Further, the sieve hole plate is rectangular, the sieve holes are arranged in a matrix, and the center connection lines are parallel to the long side and the short side of the sieve hole plate respectively. The shapes and sizes of the sieve holes match the corresponding magnetic medium rods.

[0019] Further, the sieve holes are evenly distributed in a square array with equal center distances up and down and left and right, and each row of sieve holes is exactly the same.

[0020] Further, after the magnetic medium rods are sequentially installed in the sieve holes of the sieve hole plate, the magnetic medium rods and the sieve hole plate are welded and fixed by argon arc welding.

[0021] The present invention also provides another anti-clogging magnetic medium box for a vertical ring high-gradient magnetic separator, which includes a sieve hole plate and magnetic medium rods disposed between the sieve hole plates. The ends of the magnetic medium rods are inserted into the sieve holes of the sieve hole plate. It is characterized in that a support plate is further disposed between the sieve hole plates, and through holes corresponding to the sieve holes are disposed on the support plate, and the support plate serves as a sacrificial anode.

[0022] Further, the material of the support plate is selected according to the pH value of the ore liquid selected by the magnetic separator.

[0023] Further, the sieve hole plate and the support plate are arranged in an alternating manner, and are parallel to each other and arranged at equal intervals, and the outermost side is the sieve hole plate.

[0024] Further, after the magnetic medium rods sequentially pass through the sieve hole plate and the support plate and are installed at both ends in the sieve holes, the magnetic medium rods and all the sieve hole plates and the support plate are welded and fixed by argon arc welding.

[0025] The above solution of the present invention has the following beneficial effects:

[0026] The magnetic medium box provided by the present invention has a ore particle screening layer arranged at the bottom layer, and the cross section of the magnetic medium rod is rectangular, one side of the rectangle is parallel to the bottom side of the magnetic medium box, and the bottom surface of the magnetic medium box is the slurry facing surface when in the mineral processing area, so as to prevent the funnel-shaped channel formed by the circular magnetic medium rod from being deformed by the squeezing of the ore particles and the ore particles from entering the magnetic medium box; the rectangular side length of the magnetic medium rod is slightly larger than the diameter of the other circular magnetic medium rods, so as to prevent the ore particles whose minimum particle size is larger than or equal to the spacing between the other magnetic medium rods from entering the magnetic medium box and being jammed as much as possible; the increase in the rectangular side length also increases the rigidity of the bottom magnetic medium rod, making it more difficult to deform, thereby reducing the possibility of the ore particles whose minimum particle size is larger than the spacing between the medium rods entering the magnetic medium box;

[0027] The cross-sectional diameter of the magnetic medium rods in the magnetic medium box is gradually increased from the top layer to the bottom layer, so that the surface gap between adjacent magnetic medium rods is gradually reduced. The left and right outer ends of two adjacent rows of magnetic medium rods in each layer are connected from top to bottom to form a V shape. When the magnetic medium box is at the top of the unloading area, the attenuation of the unloading water pressure can be reduced, and the water flow area is gradually reduced to increase the flow rate, thereby improving the flushing effect on the magnetic medium rods in each layer at the bottom; when the magnetic medium box is at the bottom of the ore dressing area, it can also promote the smooth discharge of particles entering the magnetic medium box to avoid jamming;

[0028] By using the support plate as a sacrificial anode, the corrosion of the anti-corrosion layer of the magnetic medium rod painted or electroplated by the mineral particles is slowed down. The setting of the support plate also increases the number of supporting points for the magnetic medium rod, increases the ratio of the cross-sectional diameter to the length between adjacent supporting points of the magnetic medium rod, and improves the rigidity of the magnetic medium rod, thereby reducing the deformation of the magnetic medium rod in the vertical axis direction during mineral processing operations, and reducing the clamping caused by uneven density due to the deformation of the magnetic medium rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 The figure is a schematic diagram of the overall structure of the present invention (combination of embodiments 1 and 2);

[0030] Figure 2 It is a schematic diagram of the cross-section distribution of the magnetic medium rod of the present invention;

[0031] Figure 3 The figure is a schematic diagram of the overall structure of the present invention (combination of embodiments 1 and 3);

[0032] Figure 4 It is a schematic diagram of the structure of a magnetic medium box in the prior art.

[0033] [Description of Reference Numerals]

[0034] 1-sieve plate; 2-magnetic medium rod; 3-support ear; 4-vertical ring; 5-thin round magnetic medium rod; 6-thick round magnetic medium rod; 7-rectangular magnetic medium rod; 8-support plate. DETAILED DESCRIPTION

[0035] To make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will be described in detail with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative work shall fall within the protection scope of the present invention.

[0036] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. Additionally, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0037] Embodiment 1:

[0038] As Figure 1 、 Figure 2 shown, Embodiment 1 of the present invention provides an anti-blocking magnetic medium box for a vertical ring high-gradient magnetic separator, which includes a sieve hole plate 1 and magnetic medium rods 2 arranged between the sieve hole plates 1. The ends of the magnetic medium rods 2 are inserted into the sieve holes of the sieve hole plate 1 and fixed. The magnetic medium rods 2 are composed of a plurality of thin circular magnetic medium rods 5, a plurality of thick circular magnetic medium rods 6 and a plurality of rectangular magnetic medium rods 7. Among them, the cross-sectional diameter of the thin circular magnetic medium rod 5 is 3 mm, the cross-sectional diameter of the thick circular magnetic medium rod 6 is 3.5 mm, and the side length of the cross-section of the rectangular magnetic medium rod 7 is 4 mm.

[0039] The distance between the centers of adjacent sieve holes is 6 mm. The sieve holes in each row are the same, and the shape and size of the sieve holes in the same column are different from bottom to top. The sieve hole plate 1 is rectangular, and the connecting lines of the sieve hole centers are parallel to the long and short sides of the sieve hole plate 1 respectively. The shape and size of the sieve holes match the cross-section of the corresponding magnetic medium rod 2, so that the ends of the magnetic medium rods 2 can be inserted into the sieve holes fittingly. The sieve holes in the bottom row are rectangles with a side length of 4 mm, and the bottom sides are parallel to the long side of the sieve hole plate 1. The sieve holes in the second bottom row are circles with a diameter of 3.5 mm, and the sieve holes in the remaining rows are circles with a diameter of 3 mm. The rectangular magnetic medium rods 7 are placed in the bottom layer of the medium box as the ore particle sieve layer. The layer above it is the thick circular magnetic medium rods 6 with a cross-sectional diameter of 3.5 mm, and the remaining layers are the thin circular magnetic medium rods 5 with a cross-sectional diameter of 3 mm. After the magnetic medium rods 2 are installed between the sieve hole plates 1 in sequence, the magnetic medium rods 2 and the sieve hole plates 1 are welded and fixed by argon arc welding.

[0040] The lowest layer of the magnetic medium box is provided with a mineral particle sieve layer. The cross-section of the magnetic medium rod 2 is rectangular, and one side of the rectangle is parallel to the bottom of the magnetic medium box. When the magnetic medium box is in the ore separation area, the bottom surface is the slurry-facing surface. By using the rectangular magnetic medium rod 2, the slurry-facing channels formed between two adjacent magnetic medium rods 2 in the lowest layer are equally wide upward. In other embodiments, straight-edge symmetrically closed shapes such as semicircles, isosceles trapezoids, and isosceles triangles can also be used, with their straight edges at the lowest position, so that the slurry-facing channels gradually expand upward. Since when the bottom layer adopts the form of circular magnetic medium rods 2, the funnel-shaped channels formed between the magnetic medium rods 2 are easily deformed by the extrusion of mineral particles, resulting in mineral particles with a minimum particle size greater than or equal to the screening size being squeezed into the magnetic medium box, and it is easier to form a jamming phenomenon. Therefore, by replacing the magnetic medium rod 2 with a circular cross-section with a rectangle, the above situation can be avoided as much as possible.

[0041] In this embodiment, the rectangular side length of the magnetic medium rod 2 is slightly larger than the diameter of the rest of the circle, that is, the channel size of the lowest layer is smaller than that of the subsequent channels, so as to prevent mineral particles with a minimum particle size greater than or equal to the spacing of the circular magnetic medium rods 2 from entering the upper layer of the magnetic medium box as much as possible. Moreover, the setting and widening of the rectangular side length also increase the stiffness of the magnetic medium rod 2 in the lowest layer, making it more difficult to deform and reducing the possibility of mineral particles with a minimum particle size greater than the spacing of the medium rods from entering the magnetic medium box.

[0042] In addition, the cross-sectional diameter of the magnetic medium rod 2 is increased layer by layer from the top to the bottom of the magnetic medium box, so that the surface gap between two adjacent magnetic medium rods 2 decreases layer by layer. When the magnetic medium box is at the top of the ore unloading area facing water, the left and right outer endpoints of two adjacent columns of magnetic medium rods 2 in each layer are connected by a line from top to bottom to form a V shape, which can reduce the attenuation of the ore unloading water pressure, reduce the water flow area layer by layer and increase the flow velocity, and improve the flushing effect on the magnetic medium rods 2 in the bottom layers. When the magnetic medium box is at the bottom of the ore separation area facing ore, the above connection shape can promote the smooth discharge of the particles entering the magnetic medium box to avoid jamming.

[0043] Embodiment 2:

[0044] Please refer to again Figure 1 , Embodiment 2 of the present invention provides an anti-blocking magnetic medium box for a vertical ring high-gradient magnetic separator, which also includes a sieve hole plate 1 and magnetic medium rods 2 arranged between the sieve hole plates 1. The ends of the magnetic medium rods 2 are inserted into the sieve holes of the sieve hole plate 1 and fixed. Since the mineral particles have a high kinetic energy in the ore separation cavity, the anti-corrosion layer coated and electroplated on the magnetic medium rods 2 will be quickly washed away by the mineral particles and lose its anti-corrosion effect. Therefore, as an improvement, a support plate 8 serving as a sacrificial anode is provided, which is located between the sieve hole plates 1, and through holes corresponding to the sieve holes one by one are provided on the support plate 8. The outer shape size and sieve hole distribution of the support plate 8 are the same as those of the sieve hole plate 1. In this embodiment, three sieve hole plates 1 and two support plates 8 are arranged in an alternating, parallel, and equally spaced manner, with the outermost being the sieve hole plate 1. The corrosion of the magnetic medium rods 2 is prevented by the setting of the sacrificial anode.

[0045] Through the arrangement of the support plate 8, not only can the anti-corrosion effect be achieved, but also the magnetic medium rod 2 can be supported, that is, the number of support points for the magnetic medium rod 2 is increased, the ratio of the cross-sectional diameter to the length between adjacent support points of the magnetic medium rod 2 is increased, the stiffness of the magnetic medium rod 2 is improved, thereby reducing the deformation of the magnetic medium rod 2 in the direction of the vertical axis during the ore dressing operation, and reducing the jamming caused by the uneven density due to the deformation of the magnetic medium rod 2.

[0046] After the magnetic medium rods 2 sequentially pass through all the sieve hole plates 1 and the support plates 8, the magnetic medium rods 2 are welded to the sieve holes of all the sieve hole plates 1 by argon arc welding, and at the same time, the magnetic medium rods 2 are welded to the perforations of all the support plates 8 to ensure the overall connection strength of the magnetic medium rods 2, the sieve hole plates 1 and the support plates 8, and at the same time ensure that the contact resistance between the magnetic medium rods 2 and the support plates 8 meets the requirements of the sacrificial anode method.

[0047] Embodiment 3:

[0048] As Figure 3 shown, Embodiment 3 of the present invention provides another anti-blocking magnetic medium box for a vertical ring high-gradient magnetic separator. Compared with Embodiment 2, the cross-sectional area of the magnetic medium rod 2 and the center distance of the magnetic medium rods 2 are increased. Therefore, only two sieve hole plates 1 and one support plate 8 are needed, and the ratio of the cross-sectional diameter to the length between adjacent support points of the magnetic medium rod 2, that is, the stiffness of the magnetic medium rod 2, still meets the requirements. Others are similar to Embodiment 2 and will not be elaborated here.

[0049] The above is the preferred embodiment of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. An anti-blocking magnetic medium box for a vertical ring high-gradient magnetic separator, comprising a sieve hole plate and magnetic medium rods arranged between the sieve hole plates, the ends of the magnetic medium rods being inserted into the sieve holes of the sieve hole plate, characterized in that, The channels formed between two adjacent magnetic medium rods in the lowermost layer are equally wide or expand upward. The cross-section of the magnetic medium rods in the lowermost layer is a symmetrically closed shape with straight edges; the straight edges of the symmetrically closed shape with straight edges are at the lowest position, and the bottom surface of the magnetic medium box is the slurry-facing surface when in the ore selection area; the cross-sectional diameter of the magnetic medium rods in the magnetic medium box increases layer by layer from top to bottom, so that the surface gap between adjacent magnetic medium rods decreases layer by layer, and the top of the magnetic medium box faces water when in the ore unloading area. The cross-section of the magnetic medium rods in other layers is circular, and the diameter is not greater than the bottom side length of the magnetic medium rods in the lowermost layer. The left and right outer endpoints of two adjacent columns of magnetic medium rods in each layer are connected by a line from top to bottom to form a V shape.

2. The anti-clogging magnetic medium box of the vertical ring high-gradient magnetic separator according to claim 1, wherein The sieve plate is rectangular, the sieve holes are distributed in a matrix, and the center connection lines are parallel to the long and short sides of the sieve plate respectively. The shape and size of the sieve holes match the corresponding magnetic medium rods.

3. The anti-clogging magnetic medium box of the vertical ring high-gradient magnetic separator according to claim 2, characterized in that The sieve holes are evenly distributed in a square array with equal center distances up and down and left and right, and each row of sieve holes is exactly the same.

4. The anti-clogging magnetic medium box of the vertical ring high-gradient magnetic separator according to claim 1, characterized in that After the magnetic medium rods are sequentially installed in the sieve holes of the sieve plate, the magnetic medium rods and the sieve plate are welded and fixed by argon arc welding.

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