Magnetic-gravity combined sorting device

Abstract

The invention discloses a magnetic-gravity combined sorting device which comprises a sorting column body, a feeding port is formed in the upper portion of the sorting column body, a pulsating device and a water inlet are arranged at the bottom of the sorting column body, the pulsating device and the water inlet are both communicated with the sorting column body, the peripheral face of the sorting column body is sleeved with a magnet exciting coil, and the magnet exciting coil is connected with the pulsating device. The pulsating device and the water inlet can provide pulsating flow for the interior of the separation column body, the magnet exciting coil can provide a magnetic field for the separation column body so that minerals in the separation column body can generate different settling velocities, and then the minerals are separated. According to the magnetic-gravity combined separation device, the mineral separation precision and efficiency can be improved.

Description

Technical Field

[0001] The invention relates to a mineral separation device, in particular to a magnetic-gravity combined separation device. Background Art

[0002] The countercurrent separation column is a new type of high-capacity solid-liquid fluidized bed separation equipment, which has the advantages of no moving parts, simple structure, small footprint, low energy consumption, no pollution, etc. Compared with traditional fluidized bed equipment, the countercurrent separation column adds parallel inclined plates on the upper part of the bed, and uses the flow film separation of the inclined plates to obtain better separation accuracy and processing capacity far exceeding that of traditional fluidized bed equipment.

[0003] However, the traditional countercurrent separation column relies on adjusting the operating parameters such as feed concentration and flow, underflow flow and rising water flow to control the separation of the separation bed and the inclined plate layer. The separation state inside the bed can only be determined by the particle density and particle size properties of the feed, and can only provide stable and unchanged fluidized water. Not only does this equipment not apply to working conditions with high viscosity and poor dispersion effect, but the separation effect is also very unsatisfactory for raw materials with small density differences and large magnetic differences. In addition, when performing the selection operation of materials with magnetic differences such as magnetite, it is difficult to achieve effective recovery of fine-particle magnetic minerals.

[0004] In view of this, it is necessary to design a new type of magnetic-gravity combined separation device that can overcome the above-mentioned technical difficulties and effectively solve or alleviate the above-mentioned technical difficulties. Summary of the invention

[0005] The basic technical problem to be solved by the present invention is to provide a magnetic-gravity combined sorting device, which can not only improve the sorting accuracy and efficiency, but also be applicable to a wider range of sorting scenarios and recover minerals at the same time.

[0006] In order to achieve the above-mentioned purpose, the present invention provides a magnetic-gravity combined sorting device, characterized in that it includes a sorting column, a feed port is arranged on the upper part of the sorting column, a pulsation device and a water inlet are arranged at the bottom of the sorting column, the pulsation device and the water inlet are both connected to the sorting column, an excitation coil is sleeved on the outer circumferential surface of the sorting column, the pulsation device and the water inlet can provide a pulsating flow in the sorting column, and the excitation coil can provide a magnetic field for the sorting column, so as to enable the minerals in the sorting column to produce different sedimentation speeds, thereby sorting the minerals.

[0007] Preferably, a pulsation hole is provided at the bottom of the sorting column, and the pulsation device includes a diaphragm covering the pulsation hole and a reciprocating drive mechanism connected to the diaphragm, and the reciprocating drive mechanism can drive the diaphragm to perform reciprocating motion to form a pulse flow in the sorting column.

[0008] Preferably, the excitation coil comprises a plurality of sub-coils sequentially sleeved on the outer peripheral surface of the sorting column from top to bottom, and each sub-coil is connected to a current controller to form a variable magnetic field inside the sorting column, thereby sorting the mineral.

[0009] Preferably, the current controller can cyclically supply power to the plurality of sub-coils from top to bottom in sequence, so as to form a changing magnetic field in the sorting cylinder that pulls toward the lower part of the sorting cylinder.

[0010] Preferably, an inclined sorting column is arranged on the upper part of the sorting column, the lower end of the inclined sorting column is connected with the sorting column, the upper end of the inclined sorting column is arranged with an overflow trough, and an overflow port is opened on the overflow trough.

[0011] Preferably, a plurality of parallel inclined plates are provided in the inclined surface sorting column, each of the inclined plates is a rigid magnetically conductive inclined plate, and the spacing between the multiple layers of inclined plates is adjustable so as to be able to divide the space in the sorting column.

[0012] Preferably, a plurality of groups of permanent magnetic blocks are symmetrically arranged on both sides of the inclined surface sorting column, the spacing between the permanent magnetic blocks in each group is adjustable, and the permanent magnetic blocks can form a uniform magnetic field in the inclined surface sorting column.

[0013] Preferably, a stirring device is also provided in the sorting column, and the stirring device includes a stirring impeller arranged in the sorting column and a driving member connected to the stirring impeller, the driving member is arranged in the inclined sorting column, the stirring impeller is located at the lower part of the sorting column, the stirring impeller and the driving member are connected to the driving member via a transmission rod, and the driving member can drive the stirring impeller to rotate.

[0014] Preferably, a water distribution piece is connected to the bottom of the sorting column, a bottom flow port is provided at the lower end of the water distribution piece, the water distribution piece is funnel-shaped and has multiple water distribution holes, and the upper end port position of the water distribution piece is not lower than the height of the pulsation device.

[0015] Preferably, the water distribution member is formed as a funnel-shaped water distribution member with its opening facing upward.

[0016] Through the above technical scheme, a pulsating device and a water inlet are arranged at the bottom of the sorting column to form a sinusoidal pulsating water flow that advances or retreats rapidly in the sorting column, so as to break up the light minerals mixed with the heavier ones, which is more conducive to the stratification of light and heavy minerals. An excitation coil is arranged on the outer peripheral surface of the sorting column to form a changing magnetic field that pulls downward in the sorting column, and minerals with high magnetism are deposited in the lower layer due to the action of the magnetic field, and minerals with low magnetism are deposited in the upper layer. At the same time, multiple groups of permanent magnetic blocks are symmetrically arranged on both sides of the inclined sorting column, and minerals with weak magnetism and low density that flow into the inclined sorting column form magnetic chains in the uniform magnetic field formed by the permanent magnetic blocks, so that those high-density and small-size minerals flow back into the sorting column under the traction of gravity for further screening, thereby improving the sorting efficiency and accuracy of the magnetic-gravity combined sorting device.

[0017] In addition, by setting an inclined sorting column on the upper part of the sorting column, the fluid drag force received by the low-density and large-particle minerals is greater than that of the high-density and small-particle minerals, so that they are discharged through the overflow port for recovery. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a front structural schematic diagram of a magnetic-gravity combined separation device according to a specific embodiment of the present invention;

[0019] Figure 2 It is a schematic diagram of the side structure of a magnetic-gravity combined separation device according to a specific embodiment of the present invention.

[0020] Description of Reference Numerals

[0021] 1. Sorting column; 11. Pulsating hole; 12. Bottom flow port; 13. Feed port; 14. Water inlet; 2. Stirring device; 21. Driving member; 22. Stirring impeller; 3. Water distribution member; 31. Water distribution hole; 4. Excitation coil; 5. Pulsating device; 51. Diaphragm; 52. Reciprocating drive mechanism; 6. Inclined sorting column; 61. Inclined plate; 62. Overflow trough; 63. Overflow port; 7. Permanent magnet block. DETAILED DESCRIPTION

[0022] The specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present invention, and is not used to limit the present invention.

[0023] like Figure 1 and Figure 2As shown, the basic embodiment of the present invention provides a magnetic-gravity combined sorting device, including a sorting column 1, a feed port 13 is arranged on the upper part of the sorting column 1, a pulsating device 5 and a water inlet 14 are arranged on the bottom of the sorting column 1, the pulsating device 5 and the water inlet 14 are both connected to the sorting column 1, an excitation coil 4 is sleeved on the outer peripheral surface of the sorting column 1, the pulsating device 5 and the water inlet 14 can provide a pulsating flow in the sorting column 1, and the excitation coil 4 can provide a magnetic field for the sorting column 1, so as to enable the minerals in the sorting column 1 to produce different sedimentation velocities, thereby sorting the minerals.

[0024] In order to facilitate understanding of the technical solution of the magnetic-gravity combined separation device of the present invention, the technical effects of the magnetic-gravity combined separation device of the present invention will be specifically described below with reference to the accompanying drawings.

[0025] like Figure 1 and Figure 2 As shown, a feed port 13 is provided on the upper part of the sorting column 1, and the mineral enters the sorting column 1 through the feed port 13. A pulsating device 5 and a water inlet 14 are provided on the bottom plate of the sorting column 1, wherein the pulsating device 5 and the water inlet 14 are both connected to the sorting column 1, and an excitation coil 4 is sleeved on the outer peripheral surface of the sorting column 1. The excitation coil 4 provides magnetic force to form a magnetic field in the sorting column 1, which is beneficial to the agglomeration and sedimentation of magnetic particles in the mineral in the sorting column 1, so that the magnetic particles and the non-magnetic particles have different lifting speeds, and a water source is provided for the sorting column 1 through the water inlet 14. The pulsating device 5 provides a specific pulsating ore pulp flow inside the sorting column 1 to lift up the minerals with small magnetism and small gravity, so that the minerals are sorted in the sorting column 1, thereby improving the sorting efficiency of the magnetic-gravity combined sorting device.

[0026] Furthermore, if Figure 1 and Figure 2 As shown, a pulsating hole 11 is provided at the bottom of the sorting column 1, and the pulsating hole 11 can be provided on the side of the bottom of the sorting column 1. The pulsating device 5 includes a diaphragm 51 covering the pulsating hole 11 and a reciprocating driving mechanism 52 connected to the diaphragm 51. The reciprocating driving mechanism 52 can drive the diaphragm 51 to perform reciprocating motion, thereby forming a pulsating flow in the sorting column 1. The pulse flow causes the minerals in the sorting column 1 to perform a rapid forward or rapid backward sinusoidal motion, which is convenient for mineral sorting and improves the accuracy and efficiency of mineral sorting.

[0027] Furthermore, if Figure 1 and Figure 2 As shown, the excitation coil 4 includes a plurality of sub-coils sequentially sleeved on the outer peripheral surface of the sorting column 1 from top to bottom, each sub-coil is connected to a current controller, and a magnetic field is formed in the sorting column 1 by turning on the current controller to energize the plurality of sub-coils, thereby forming a downward magnetic force on the minerals in the sorting column 1, so that the minerals with strong magnetic force and high density are precipitated downward, which is convenient for mineral sorting and improves the accuracy and efficiency of mineral sorting.

[0028] Furthermore, if Figure 1 and Figure 2 As shown, the current controller can circulate power to multiple sub-coils from top to bottom in sequence, forming a changing magnetic field that pulls downward in the sorting column 1. The changing magnetic field can cause the magnetic particles in the mineral to be repeatedly agglomerated, dispersed, and agglomerated in the magnetic field. At the same time, the minerals with high density and high magnetism are overcome by the combined force of magnetism and gravity to overcome the upward pulsating slurry and be discharged from the bottom flow port 12, while those minerals with weak magnetism and low density continue to remain in the sorting column 1, waiting for further sorting, thereby improving the accuracy and efficiency of mineral sorting.

[0029] Furthermore, if Figure 1 and Figure 2 As shown, an inclined sorting column 6 is arranged on the upper part of the sorting column 1, and the lower end of the inclined sorting column 6 is connected with the sorting column 1. Specifically, the lower end of the inclined sorting column 6 can be connected with the upper part of the sorting column 1, and an overflow trough 62 is arranged on the upper end of the inclined sorting column 6, and an overflow port 63 is arranged on the overflow trough 62. In the sorting column 1, the upward pulse flow force on the minerals with low magnetism and low density is greater than the gravity on the minerals and the downward pulling magnetic force generated by the excitation coil 4 in the sorting column 1, so that the minerals with low magnetism and low density are washed into the inclined sorting column 6 by the pulse flow, and discharged through the overflow port 63, so that the minerals with low magnetism and low density are sorted out, thereby improving the accuracy and efficiency of mineral sorting, and at the same time, the minerals are recovered.

[0030] Furthermore, if Figure 1 and Figure 2 As shown, a plurality of parallel inclined plates 61 are arranged in the inclined sorting column 6. The plurality of inclined plates 61 can be arranged along the axis of the inclined sorting column 6, and the angles between the plurality of inclined plates 61 can be the same. The spacing between the plurality of inclined plates 3 can be adjusted to divide the space in the inclined sorting column 6 to adapt to the sorting of different minerals. The material of the inclined plates 61 is a rigid magnetic conductive material, and the shape of the inclined plates 61 can be replaced as needed. When the mineral flows into the gap between the inclined plates 61, the flow velocity is distributed in a gradient, that is, the closer to the inclined plates 61, the smaller the flow velocity, which is convenient for further sorting of subsequent minerals and improves the accuracy and efficiency of mineral sorting. At the same time, the spacing between the plurality of inclined plates 61 is adjusted to adapt to the sorting of different minerals.

[0031] Furthermore, if Figure 1 and Figure 2As shown, multiple groups of permanent magnetic blocks 7 are symmetrically arranged on both sides of the inclined sorting column 6, and the spacing between the permanent magnetic blocks 7 in each group is adjustable. The permanent magnetic blocks 7 can form a uniform magnetic field in the inclined sorting column 6, so that the minerals with weak magnetism and low density flowing into the inclined sorting column 6 form magnetic chains in the uniform magnetic field formed by the permanent magnetic blocks 7, and then agglomerate into large particles, thereby increasing their own gravity and sinking on the inclined plate 61, so that those high-density and small-particle-size minerals flow back into the sorting column 1 under the traction of gravity, while those low-density and large-particle-size minerals receive a fluid drag force greater than that of high-density and small-particle-size minerals, and are discharged through the overflow port 63, thereby further realizing sorting, improving the accuracy and efficiency of mineral sorting, and recovering low-density and large-particle-size minerals at the same time.

[0032] Furthermore, if Figure 1 and Figure 2 As shown, a stirring device 2 is also provided in the sorting column 1, and the stirring device 2 includes a stirring impeller 22 arranged in the sorting column 1 and a driving member 21 connected to the stirring impeller 22, the driving member 21 is arranged in the inclined sorting column 6, the stirring impeller 22 is located at the lower part of the sorting column 1, the stirring impeller 22 and the driving member 21 are connected by a transmission rod, and the driving member 21 can drive the stirring impeller 22 to rotate, wherein the driving member 21 is a driving motor, and the driving motor can be arranged at the top of the sorting column 1, and the shape of the stirring impeller 22 can be adaptively adjusted according to specific needs, and at the same time, the driving motor is adjusted to adjust the rotation speed of the stirring impeller, so as to loosen the minerals in the sorting column 1, reduce the entrainment of low-density and low-specific magnetic coefficient particles in minerals with strong magnetism and high density, and improve the accuracy and efficiency of mineral sorting.

[0033] Furthermore, if Figure 1 and Figure 2 As shown, a water distribution member 3 is connected to the bottom of the sorting column 1, and a bottom flow port 2 is arranged at the lower end of the water distribution member 3. The water distribution member 3 is funnel-shaped, and the wider open end of the water distribution member 3 is arranged opposite to the stirring impeller 22. The narrower end of the water distribution member 3 is connected to the bottom flow port 12, and a plurality of water distribution holes 31 are arranged. The upper end port position of the water distribution member 3 is not lower than the height of the pulsation device 5. The funnel-shaped water distribution member 3 facilitates the minerals with high magnetism and density in the minerals to be deposited in the water distribution member 3 and discharged through the bottom flow port 2 on the water distribution member 3, thereby improving the accuracy and efficiency of mineral sorting.

[0034] Furthermore, if Figure 1 and Figure 2 As shown, the water distribution member 3 is funnel-shaped and its opening faces upward, so that the minerals with high magnetism and density in the minerals are deposited in the water distribution member 3 and discharged through the bottom flow port 2 on the water distribution member 3, thereby improving the accuracy and efficiency of mineral separation.

[0035] In order to have a deeper understanding of the technical concept and advantages of the magnetic-gravity combined separation device of the present invention, the following is a Figure 1 and attached Figure 2 The structural form of the magnetic-gravity combined separation device with relatively comprehensive preferred features of the present invention is described.

[0036] A feed port 13 is provided at the top of the sorting column 1, and the mineral is put into the sorting column 1 through the feed port 13 for sorting. A pulsating device 5 and a water inlet 14 are provided at the bottom of the sorting column 1. The pulsating device 5 and the water inlet 14 are both connected to the sorting column 1. At the same time, a pulsating hole 11 is provided at the bottom of the sorting column 1. The pulsating device 5 includes a diaphragm 51 covering the pulsating hole 11 and a reciprocating driving mechanism 52 connected to the diaphragm 51. The reciprocating driving mechanism 52 drives the diaphragm 51 to do reciprocating motion. Water is poured into the sorting column 1 through the water inlet 14. At this time, the mineral will fall due to the influence of gravity, and stratification will be formed due to the different densities of the mining area. At the same time, the reciprocating driving mechanism 52 drives the diaphragm 51 to do reciprocating motion, which can form a rapid movement in the sorting column 1. The forward or backward sinusoidal pulsating water flow breaks up the light minerals mixed with the heavier ones, which is more conducive to the stratification of light and heavy minerals. An excitation coil 4 is sleeved on the outer peripheral surface of the sorting column 1. The excitation coil 4 includes a plurality of sub-coils sleeved on the outer peripheral surface of the sorting column 1 from top to bottom, each sub-coil is connected to a current controller, and the plurality of sub-coils are energized by turning on the current controller. At the same time, the current controller can circulate power to the plurality of sub-coils from top to bottom in sequence, forming a changing magnetic field that pulls downward in the sorting column 1, and minerals with high magnetism are deposited in the lower layer due to the effect of the magnetic field, and minerals with low magnetism are deposited in the upper layer. An inclined sorting column 6 is arranged on the upper part of the sorting column 1, and the lower end of the inclined sorting column 6 is connected to the sorting column 1. Specifically, the inclined sorting column 6 The lower end of the inclined plane sorting column 6 can be connected to the upper part of the sorting column 1, an overflow groove 62 is provided at the upper end of the inclined plane sorting column 6, and an overflow port 63 is provided on the overflow groove 62. A plurality of parallel inclined plates 61 are provided in the inclined plane sorting column 6. The plurality of inclined plates 61 can be provided along the axis of the inclined plane sorting column 6, and the angles between the plurality of inclined plates 61 can be the same. The spacing between the plurality of inclined plates 3 can be adjusted to divide the space in the inclined plane sorting column 6 to adapt to the sorting of different minerals. The material of the inclined plate 61 is a rigid magnetic conductive material, and the shape of the inclined plate 61 can be replaced as needed. A plurality of groups of permanent magnetic blocks 7 are symmetrically arranged on both sides of the inclined plane sorting column 6, and the spacing between the permanent magnetic blocks 7 in each group is adjustable. The permanent magnetic blocks 7 can form a uniform magnetic field in the inclined plane sorting column 6. When the reciprocating drive mechanism 52 When the diaphragm 51 is driven to do reciprocating motion, due to the setting of the excitation coil 4, the minerals with strong magnetism and heavier weight are deposited at the lower part of the sorting column 1, while the minerals with weak magnetism and lighter weight are pushed into the inclined sorting column 6 by the pulse wave formed by the reciprocating drive mechanism 52. The minerals with weak magnetism and small density flowing into the inclined sorting column 6 form magnetic chains in the uniform magnetic field formed by the permanent magnetic block 7, and then agglomerate into large particles, thereby increasing their own gravity and sinking on the inclined plate 61, so that those high-density and small-particle-size minerals flow back into the sorting column 1 under the traction of gravity, while those low-density and large-particle-size minerals receive a fluid drag force greater than that of the high-density and small-particle-size minerals, so that they are discharged through the overflow port 63 for recovery, thereby further realizing sorting. A stirring device 2 is provided on the sorting column 1.The stirring device 2 includes a stirring impeller 22 arranged in the sorting column 1 and a driving member 21 connected to the stirring impeller 22, the driving member 21 is arranged in the inclined sorting column 6, the stirring impeller 22 is located at the lower part of the sorting column 1, the stirring impeller 22 and the driving member 21 are connected with a transmission rod, and the driving member 21 can drive the stirring impeller 22 to rotate, wherein the driving member 21 is a driving motor, and the driving motor can be arranged at the top of the sorting column 1, the shape of the stirring impeller 22 can be adaptively adjusted according to specific needs, and the rotation speed of the stirring impeller can be adjusted by adjusting the driving motor at the same time. The minerals in the sorting column 1 are loosened. A water distribution part 3 is connected to the bottom of the sorting column 1. The lower end of the water distribution part 3 is provided with an underflow port 2. The water distribution part 3 is funnel-shaped. The wider open end of the water distribution part 3 is arranged opposite to the stirring impeller 22. The narrower end of the water distribution part 3 is connected to the underflow port 12 and is provided with a plurality of water distribution holes 31. The upper end of the water distribution part 3 is not lower than the height of the pulsation device 5. The funnel-shaped water distribution part 3 facilitates the minerals with high magnetism and density in the minerals to be deposited in the water distribution part 3 and discharged through the underflow port 2 on the water distribution part 3, thereby improving the accuracy and efficiency of mineral sorting.

[0037] It can be seen from the above description of the present invention that a pulsating device 5 and a water inlet 14 are arranged at the bottom of the sorting column 1 to form a sinusoidal pulsating water flow that advances or retreats rapidly in the sorting column 1, so as to break up the light minerals mixed with the heavier ones, which is more conducive to the stratification of light and heavy minerals. An excitation coil 4 is sleeved on the outer peripheral surface of the sorting column 1 to form a changing magnetic field that pulls downward in the sorting column 1, and the minerals with high magnetism are deposited in the lower layer due to the action of the magnetic field, and the minerals with low magnetism are deposited in the upper layer. At the same time, a plurality of groups of permanent magnetic blocks 7 are symmetrically arranged on both sides of the inclined sorting column 6, and the minerals with weak magnetism and low density that flow into the inclined sorting column 6 form magnetic chains in the uniform magnetic field formed by the permanent magnetic blocks 7, so that those high-density and small-size minerals flow back to the sorting column 1 under the traction of gravity for further screening, thereby improving the sorting efficiency and accuracy of the magnetic-gravity combined sorting device.

[0038] In addition, by arranging an inclined sorting column 6 on the upper part of the sorting column 1, the fluid drag force received by the low-density and large-size minerals is greater than that of the high-density and small-size minerals, so that the minerals are discharged through the overflow port 63 for recovery.

[0039] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited thereto. Within the technical concept of the present invention, the technical solution of the present invention may be subjected to a variety of simple modifications, including combining various specific technical features in any suitable manner, for example... In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations. However, these simple modifications and combinations should also be regarded as the contents disclosed by the present invention and belong to the protection scope of the present invention.

Claims

1. A magnetic-gravity combined separation device, characterized in that: The invention comprises a sorting column (1), wherein a feed port (13) is arranged at the top of the sorting column (1), a pulsating device (5) and a water inlet (14) are arranged at the bottom of the sorting column (1), the pulsating device (5) and the water inlet (14) are both connected to the sorting column (1), an excitation coil (4) is sleeved on the outer peripheral surface of the sorting column (1), the pulsating device (5) and the water inlet (14) can provide a pulsating flow in the sorting column (1), and the excitation coil (4) can provide a magnetic field for the sorting column (1), so as to make the minerals in the sorting column (1) produce different sedimentation speeds, thereby sorting the minerals.

2. The magnetic-gravity combined separation device according to claim 1, characterized in that: A pulsation hole (11) is provided at the bottom of the sorting column (1), and the pulsation device (5) comprises a diaphragm (51) covering the pulsation hole (11) and a reciprocating drive mechanism (52) connected to the diaphragm (51), wherein the reciprocating drive mechanism (52) can drive the diaphragm (51) to perform reciprocating motion so as to form a pulse flow in the sorting column (1).

3. The magnetic-gravity combined separation device according to claim 1, characterized in that: The excitation coil (4) comprises a plurality of sub-coils which are sequentially sleeved on the outer peripheral surface of the separation column (1) from top to bottom, and each of the sub-coils is connected to a current controller so as to form a variable magnetic field inside the separation column (1) and thereby separate the minerals.

4. The magnetic-gravity combined separation device according to claim 3, characterized in that: The current controller is capable of cyclically supplying power to the plurality of sub-coils from top to bottom in sequence, so as to form a changing magnetic field in the sorting cylinder (1) that pulls the lower part of the sorting cylinder (1).

5. The magnetic-gravity combined separation device according to claim 1, characterized in that: An inclined sorting column (6) is arranged on the upper part of the sorting column (1), the lower end of the inclined sorting column (6) is connected to the sorting column (1), an overflow groove (62) is arranged on the upper end of the inclined sorting column (6), and an overflow port (63) is opened on the overflow groove (62).

6. The magnetic-gravity combined separation device according to claim 5, characterized in that: The inclined surface separation column (6) is provided with a plurality of parallel inclined plates (61), each of the inclined plates (61) is a rigid magnetically conductive inclined plate, and the spacing between the multiple layers of inclined plates (61) is adjustable so as to be able to divide the space inside the inclined surface separation column (6).

7. The magnetic-gravity combined separation device according to claim 5, characterized in that: A plurality of groups of permanent magnetic blocks (7) are symmetrically arranged on both sides of the inclined surface separation column (6); the spacing between the permanent magnetic blocks (7) in each group is adjustable; and the permanent magnetic blocks (7) can form a uniform magnetic field in the inclined surface separation column (6).

8. The magnetic-gravity combined separation device according to claim 1, characterized in that: The sorting column (1) is also provided with a stirring device (2), the stirring device (2) comprising a stirring impeller (22) arranged in the sorting column (1) and a driving member (21) connected to the stirring impeller (22), the driving member (21) being arranged in the inclined sorting column (6), the stirring impeller (22) being located at the lower part of the sorting column (1), the stirring impeller (22) and the driving member (21) being connected with a transmission rod, and the driving member (21) being capable of driving the stirring impeller (22) to rotate.

9. The magnetic-gravity combined separation device according to claim 1, characterized in that: The bottom of the sorting column (1) is connected to a water distribution member (3), the lower end of the water distribution member (3) is provided with a bottom flow port (12), the water distribution member (3) is funnel-shaped and is provided with a plurality of water distribution holes (31), and the upper end port position of the water distribution member (3) is not lower than the height of the pulsation device (5).

10. The magnetic-gravity combined separation device according to claim 9, characterized in that: The water distribution member (3) is a funnel-shaped water distribution member with an opening facing upwards.

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