A magnetic-gravity combined sorting device

Abstract

The present invention discloses a combined magnetic and gravity separation device, comprising a separation column, a feed port provided at the top of the separation column, a pulsating device and a water inlet provided at the bottom of the separation column, both the pulsating device and the water inlet being connected to the separation column, an excitation coil sleeved on the outer circumference of the separation column, the pulsating device and the water inlet capable of providing a pulsating flow within the separation column, and the excitation coil capable of providing a magnetic field for the separation column, so as to cause the minerals within the separation column to have different settling velocities, thereby separating the minerals. The combined magnetic and gravity separation device of the present invention can improve the accuracy and efficiency of mineral separation.

Description

Technical Field

[0001] This invention relates to mineral sorting apparatus, and more specifically to a magnetic-gravity combined sorting apparatus. Background Art

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

[0003] However, traditional countercurrent separation columns rely on adjusting operating parameters such as feed concentration and flow rate, underflow flow rate, and rising water flow rate to control the separation of the separation bed and 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 constant fluidized water. This not only makes the equipment unsuitable for working conditions with high viscosity and poor dispersion, but also results in very poor separation effect for raw materials with small density differences and large magnetic differences. Furthermore, it is difficult to achieve effective recovery of fine magnetic minerals when performing fine-grained operations on materials with magnetic differences, such as magnetite.

[0004] In view of this, there is a need to design a new type of magnetic-gravity combined sorting device that can overcome the above-mentioned technical difficulties and effectively solve or alleviate them. Summary of the Invention

[0005] The fundamental technical problem to be solved by this invention is to provide a magnetic-gravity combined sorting device, which can not only improve sorting accuracy and efficiency, but also be applicable to a wider range of sorting scenarios, while simultaneously recovering minerals.

[0006] To achieve the above objectives, the present invention provides a magnetic gravity combined sorting device, characterized in that it includes a sorting column, a feed inlet at the upper part of the sorting column, a pulsating device and a water inlet at the bottom of the sorting column, both of which are connected to the sorting column, and an excitation coil sleeved on the outer circumferential surface of the sorting column. The pulsating device and the water inlet can provide a pulsating flow within the sorting column, and the excitation coil can provide a magnetic field within the sorting column, thereby causing the minerals within the sorting column to have different settling velocities, and thus sorting the minerals.

[0007] Preferably, the bottom of the sorting column is provided with a pulsating hole, and the pulsating device includes a diaphragm covering the pulsating hole and a reciprocating drive mechanism connected to the diaphragm. The reciprocating drive mechanism can drive the diaphragm to reciprocate so as to form a pulse flow in the sorting column.

[0008] Preferably, the excitation coil includes multiple sub-coils sequentially sleeved on the outer peripheral surface of the sorting column from top to bottom. Each sub-coil is connected to a current controller to generate a changing magnetic field inside the sorting column, thereby sorting the minerals.

[0009] Preferably, the current controller can cyclically supply power to the multiple sub-coils from top to bottom to form a changing magnetic field that pulls downwards into the sorting column.

[0010] Preferably, the upper part of the sorting column is provided with an inclined sorting column, the lower end of the inclined sorting column is connected to the sorting column, the upper end of the inclined sorting column is provided with an overflow groove, and the overflow groove is provided with an overflow port.

[0011] Preferably, the inclined sorting column is provided with multiple parallel inclined plates, each of which is a rigid magnetic inclined plate, and the spacing between the multiple inclined plates is adjustable to divide the space inside the sorting column.

[0012] Preferably, multiple sets of permanent magnet blocks are symmetrically arranged on both sides of the inclined sorting column, and the spacing between the permanent magnet blocks in each set is adjustable. The permanent magnet blocks can form a uniform magnetic field inside the inclined sorting column.

[0013] Preferably, the sorting column is further provided with a stirring device, which includes a stirring impeller disposed in the sorting column and a driving component connected to the stirring impeller. The driving component is disposed in the inclined sorting column, the stirring impeller is located at the lower part of the sorting column, and the stirring impeller is connected to the driving component by a transmission rod. The driving component can drive the stirring impeller to rotate.

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

[0015] Preferably, the water distribution element is formed as a funnel-shaped water distribution element with the opening facing upwards.

[0016] Through the above technical solution, a pulsating device and water inlet are set at the bottom of the sorting column to form a rapidly advancing or retreating sinusoidal pulsating water flow in the sorting column, which disperses the lighter minerals mixed in with the heavier ones, making it more conducive to the stratification of light and heavy minerals. An excitation coil is set on the outer periphery of the sorting column to form a downward pulling magnetic field in the sorting column. Due to the magnetic field, the minerals with strong magnetism are deposited in the lower layer, and the minerals with weak magnetism are deposited in the upper layer. At the same time, multiple sets of permanent magnet blocks are symmetrically set on both sides of the inclined sorting column. The minerals with weak magnetism and low density flowing into the inclined sorting column form magnetic chains in the uniform magnetic field formed by the permanent magnet blocks. This causes the high-density, small-particle-size minerals to flow back into the sorting column under the pull 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 at the top of the sorting column, the fluid drag force received by low-density, large-particle-size minerals can be greater than that of high-density, small-particle-size minerals, thus allowing them to be discharged through the overflow port for recycling. Attached Figure Description

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

[0019] Figure 2 This is a side view of the magnetic-gravity combined sorting device according to a specific embodiment of the present invention.

[0020] Explanation of reference numerals in the attached figures

[0021] 1. Sorting column; 11. Pulsating hole; 12. Underflow port; 13. Feed inlet; 14. Water inlet; 2. Stirring device; 21. Drive component; 22. Stirring impeller; 3. Water distribution component; 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 embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended 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 inlet 13 is provided at the upper part of the sorting column 1, and a pulsating device 5 and a water inlet 14 are provided at the bottom of the sorting column 1. Both the pulsating device 5 and the water inlet 14 are connected to the sorting column 1. An excitation coil 4 is sleeved on the outer circumferential 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 that the minerals in the sorting column 1 can produce different settling velocities, thereby sorting the minerals.

[0024] To facilitate understanding of the technical solution of the magnetic-gravity combined sorting device of the present invention, the technical effects of the magnetic-gravity combined sorting device of the present invention will be specifically described below in conjunction with the accompanying drawings.

[0025] like Figure 1 and Figure 2 As shown, a feed inlet 13 is provided at the top of the sorting column 1. Minerals enter the sorting column 1 through the feed inlet 13. A pulsating device 5 and a water inlet 14 are provided on the bottom plate of the sorting column 1. Both the pulsating device 5 and the water inlet 14 are connected to the sorting column 1. An excitation coil 4 is sleeved on the outer circumference of the sorting column 1. The excitation coil 4 provides magnetic force and forms a magnetic field in the sorting column 1, which is conducive to the agglomeration and sedimentation of magnetic particles in the minerals in the sorting column 1. This causes magnetic particles and non-magnetic particles to have different lifting and lowering speeds. Water is provided to the sorting column 1 through the water inlet 14. The pulsating device 5 provides a specific pulsating slurry flow inside the sorting column 1, which lifts up minerals with low magnetic properties and low gravity, thereby enabling the minerals to be sorted in the sorting column 1, thus improving the sorting efficiency of the magnetic gravity combined sorting device.

[0026] Furthermore, such as Figure 1 and Figure 2 As shown, a pulsating hole 11 is provided at the bottom of the sorting column 1. The pulsating hole 11 can be located 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 drive mechanism 52 connected to the diaphragm 51. The reciprocating drive mechanism 52 can drive the diaphragm 51 to reciprocate, thereby forming a pulsating flow in the sorting column 1. The pulse flow causes the minerals in the sorting column 1 to move in a sinusoidal curve with rapid advance or retreat, which facilitates mineral sorting and improves the accuracy and efficiency of mineral sorting.

[0027] Furthermore, such as Figure 1 and Figure 2 As shown, the excitation coil 4 includes multiple sub-coils that are sequentially sleeved on the outer circumference of the sorting column 1 from top to bottom. Each sub-coil is connected to a current controller. By turning on the current controller, the multiple sub-coils are energized, forming a magnetic field inside the sorting column 1. This magnetic force exerted on the minerals inside the sorting column 1 causes minerals with high magnetic density to settle downwards, facilitating mineral sorting and improving the accuracy and efficiency of mineral sorting.

[0028] Furthermore, such as Figure 1 and Figure 2 As shown, the current controller can supply power to multiple sub-coils sequentially from top to bottom, forming a downward-pulsing changing magnetic field within the sorting column 1. This changing magnetic field causes the magnetic particles in the minerals to undergo repeated agglomeration, dispersion, and agglomeration within the magnetic field. Simultaneously, minerals with high density and strong magnetism are subjected to the combined force of magnetic force and gravity to overcome the upward pulsating slurry flow and are discharged from the bottom outlet 12. Meanwhile, minerals with weak magnetism and low density remain in the sorting column 1, awaiting further sorting, thereby improving the accuracy and efficiency of mineral sorting.

[0029] Furthermore, such as Figure 1 and Figure 2 As shown, an inclined sorting column 6 is provided at the upper part of the sorting column 1. The lower end of the inclined sorting column 6 is connected to the sorting column 1. Specifically, the lower end of the inclined sorting column 6 can be connected to the upper part of the sorting column 1. An overflow trough 62 is provided at the upper end of the inclined sorting column 6, and an overflow port 63 is provided on the overflow trough 62. Inside the sorting column 1, the upward pulse current force on minerals with low magnetic properties and low density is greater than the gravity on the minerals and the downward pulling magnetic force generated by the excitation coil 4 inside the sorting column 1. As a result, minerals with low magnetic properties and low density are swept into the inclined sorting column 6 by the pulse current and discharged through the overflow port 63. This separates the minerals with low magnetic properties and low density, improving the accuracy and efficiency of mineral sorting. At the same time, the minerals are recovered.

[0030] Furthermore, such as Figure 1 and Figure 2 As shown, the inclined sorting column 6 is provided with multiple parallel inclined plates 61. The multiple inclined plates 61 can be arranged along the axis of the inclined sorting column 6, and the included angle between the multiple inclined plates 61 can be the same. The spacing between the multiple inclined plates 61 can be adjusted to divide the space inside the inclined sorting column 6 to accommodate the sorting of different minerals. The material of the inclined plates 61 is a rigid magnetic material, and the shape of the inclined plates 61 can be changed as needed. When the minerals flow into the gaps between the inclined plates 61, the flow velocity is gradient-distributed, that is, the flow velocity is smaller closer to the inclined plates 61, which facilitates the further sorting of minerals and improves the accuracy and efficiency of mineral sorting. At the same time, the spacing between the multiple inclined plates 61 can be adjusted to accommodate the sorting of different minerals.

[0031] Furthermore, such as Figure 1 and Figure 2As shown, multiple sets of permanent magnet blocks 7 are symmetrically arranged on both sides of the inclined sorting column 6. The spacing between the permanent magnet blocks 7 in each set is adjustable. The permanent magnet blocks 7 can form a uniform magnetic field inside the inclined sorting column 6, causing the weakly magnetic and low-density minerals flowing into the inclined sorting column 6 to form magnetic chains within the uniform magnetic field formed by the permanent magnet blocks 7, thereby agglomerating into large particles. This increases their own gravity and causes them to settle on the inclined plate 61. As a result, the high-density and small-particle-size minerals flow back into the sorting column 1 under the pull of gravity, while the low-density and large-particle-size minerals receive a greater fluid drag force than the high-density and small-particle-size minerals, and are thus discharged through the overflow port 63, 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, such as Figure 1 and Figure 2 As shown, a stirring device 2 is also provided inside the sorting column 1. The stirring device 2 includes a stirring impeller 22 installed inside the sorting column 1 and a driving component 21 connected to the stirring impeller 22. The driving component 21 is installed inside the inclined sorting column 6. The stirring impeller 22 is located at the lower part of the sorting column 1. The stirring impeller 22 is connected to the driving component 21 by a transmission rod. The driving component 21 can drive the stirring impeller 22 to rotate. The driving component 21 is a drive motor. The drive motor can be installed at the top of the sorting column 1. The shape of the stirring impeller 22 can be adjusted according to specific needs. At the same time, the rotation speed of the stirring impeller can be adjusted by adjusting the drive motor, thereby loosening the minerals in the sorting column 1, reducing the entrainment of low-density, low-specific-magnetic-coefficient particles in minerals with strong magnetism and high density, and improving the accuracy and efficiency of mineral sorting.

[0033] Furthermore, such as Figure 1 and Figure 2 As shown, a water distribution component 3 is connected to the bottom of the sorting column 1. The lower end of the water distribution component 3 is provided with an underflow port 2. The water distribution component 3 is funnel-shaped. The wider open end of the water distribution component 3 is positioned opposite to the stirring impeller 22. The narrower end of the water distribution component 3 is connected to the underflow port 12 and is provided with multiple water distribution holes 31. The upper end of the water distribution component 3 is not lower than the height of the pulsation device 5. The funnel-shaped water distribution component 3 facilitates the deposition of minerals with high magnetic properties and high density into the water distribution component 3 and discharges them through the underflow port 2 on the water distribution component 3, thereby improving the accuracy and efficiency of mineral sorting.

[0034] Furthermore, such as Figure 1 and Figure 2 As shown, the water distribution component 3 is funnel-shaped with its opening facing upwards, which facilitates the deposition of minerals with high magnetic properties and density into the water distribution component 3 and discharge them through the bottom outlet 2 on the water distribution component 3, thereby improving the accuracy and efficiency of mineral sorting.

[0035] To gain a deeper understanding of the technical concept and advantages of the magnetic-gravity combined sorting device of the present invention, the following is in conjunction with the appendix. Figure 1 and attached Figure 2 The structural form of the magnetic-gravity combined sorting device of the present invention is described, which has relatively preferred features and relatively comprehensive characteristics.

[0036] The upper part of the sorting column 1 is provided with a feed inlet 13, through which minerals are fed into the sorting column 1 for sorting. The bottom of the sorting column 1 is provided with a pulse device 5 and a water inlet 14, both connected to the sorting column 1. Simultaneously, a pulse hole 11 is provided at the bottom of the sorting column 1. The pulse device 5 includes a diaphragm 51 covering the pulse hole 11 and a reciprocating drive mechanism 52 connected to the diaphragm 51. The reciprocating drive mechanism 52 drives the diaphragm 51 to reciprocate. Water is poured into the sorting column 1 through the water inlet 14. At this time, the minerals will sink due to gravity, and due to the different densities in the ore area, stratification will occur. Simultaneously, the reciprocating drive mechanism 52 driving the diaphragm 51 to reciprocate can create rapid precipitates within the sorting column 1. The sinusoidal pulsating water flow, either advancing or retreating rapidly, disperses the lighter minerals mixed with heavier ones, facilitating the stratification of light and heavy minerals. An excitation coil 4 is fitted onto the outer circumference of the sorting column 1. The excitation coil 4 includes multiple sub-coils sequentially fitted onto the outer circumference of the sorting column 1 from top to bottom. Each sub-coil is connected to a current controller. By turning on the current controller, multiple sub-coils are energized. Simultaneously, the current controller can cyclically supply power to multiple sub-coils from top to bottom, creating a downward-pulling changing magnetic field within the sorting column 1. Minerals with higher magnetic properties are deposited in the lower layer due to the magnetic field, while minerals with lower magnetic properties are deposited in the upper layer. An inclined sorting column 6 is installed at the upper part of the sorting column 1, with its lower end connected to the sorting column 1. Specifically, the inclined sorting column 6... The lower end can be connected to the upper part of the sorting column 1. The upper end of the inclined sorting column 6 is provided with an overflow groove 62, and an overflow port 63 is provided on the overflow groove 62. Multiple parallel inclined plates 61 are provided inside the inclined sorting column 6. The multiple inclined plates 61 can be arranged along the axis of the inclined sorting column 6, and the included angle between the multiple inclined plates 61 can be the same. The spacing between the multiple inclined plates 61 can be adjusted to divide the space inside the inclined sorting column 6 to adapt to the sorting of different minerals. The material of the inclined plates 61 is a rigid magnetic material, and the shape of the inclined plates 61 can be changed as needed. Multiple sets of permanent magnet blocks 7 are symmetrically arranged on both sides of the inclined sorting column 6. The spacing between the permanent magnet blocks 7 in each set is adjustable. The permanent magnet blocks 7 can make a uniform magnetic field form inside the inclined sorting column 6. When the reciprocating drive mechanism 52 When the diaphragm 51 reciprocates, due to the excitation coil 4, the stronger and heavier magnetic minerals are deposited at the bottom of the sorting column 1, while the weaker and lighter magnetic minerals are pushed into the inclined sorting column 6 by the pulse waves generated by the reciprocating drive mechanism 52. The weaker and less dense minerals flowing into the inclined sorting column 6 form magnetic chains in the uniform magnetic field formed by the permanent magnet block 7, and then agglomerate into larger particles, thereby increasing their own gravity and settling on the inclined plate 61. As a result, the high-density, small-particle-size minerals flow back into the sorting column 1 under the pull of gravity, while the low-density, large-particle-size minerals receive a greater fluid drag force than the high-density, small-particle-size minerals, and are thus discharged through the overflow port 63 for recycling, further achieving sorting. A stirring device 2 is provided in the sorting column 1.The stirring device 2 includes a stirring impeller 22 disposed within the sorting column 1 and a drive component 21 connected to the stirring impeller 22. The drive component 21 is disposed within the inclined sorting column 6, and the stirring impeller 22 is located at the lower part of the sorting column 1. A transmission rod connects the stirring impeller 22 to the drive component 21, enabling the drive component 21 to drive the stirring impeller 22 to rotate. The drive component 21 is a drive motor, which can be disposed 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 rotational speed of the stirring impeller can be adjusted by adjusting the drive motor. The minerals within the sorting column 1 are loosened. A water distribution element 3 is connected to the bottom of the sorting column 1, with an underflow outlet 2 at its lower end. The water distribution element 3 is funnel-shaped, with its wider open end facing the stirring impeller 22, and its narrower end connected to the underflow outlet 12. It also has multiple water distribution holes 31. The upper end of the water distribution element 3 is at least as high as the pulsation device 5. The funnel-shaped water distribution element 3 facilitates the deposition of highly magnetic and dense minerals into it, which are then discharged through the underflow outlet 2, thus improving the accuracy and efficiency of mineral sorting.

[0037] As can be seen from the above description of the present invention, the pulsating device 5 and the water inlet 14 set at the bottom of the sorting column 1 form a sinusoidal pulsating water flow that moves rapidly forward or backward in the sorting column 1, which disperses the lighter minerals mixed in with the heavier ones, making it more conducive to the stratification of light and heavy minerals. The excitation coil 4 is set on the outer circumference of the sorting column 1 to form a downward pulling magnetic field in the sorting column 1. Due to the effect of the magnetic field, the minerals with strong magnetism are deposited in the lower layer, and the minerals with weak magnetism are deposited in the upper layer. At the same time, multiple sets of permanent magnet blocks 7 are symmetrically set on both sides of the inclined sorting column 6. 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 magnet blocks 7, so that the high-density, small-particle-size minerals are pulled back to the sorting column 1 under the pull of gravity for further screening, which improves the sorting efficiency and accuracy of the magnetic gravity combined sorting device.

[0038] In addition, by setting an inclined sorting column 6 at the top of the sorting column 1, the fluid drag force received by low-density, large-particle-size minerals is greater than that of high-density, small-particle-size minerals, so that they can be discharged through the overflow port 63 for recycling.

[0039] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings; however, the present invention is not limited thereto. Within the scope of the inventive concept, various simple modifications can be made to the technical solutions of the present invention, including combinations of various specific technical features in any suitable manner. To avoid unnecessary repetition, the present invention will not describe the various possible combinations separately. However, these simple modifications and combinations should also be considered as the content disclosed in the present invention and are all within the protection scope of the present invention.

Claims

1. A magnetic-gravity combined sorting device, characterized in that, The system includes a sorting column (1), with a feed inlet (13) at the top and a pulsating device (5) and a water inlet (14) at the bottom. The pulsating device (5) and the water inlet (14) are connected to the sorting column (1). An excitation coil (4) is fitted on the outer circumference of the sorting column (1). The pulsating device (5) and the water inlet (14) can provide a pulsating flow to the sorting column (1), and the excitation coil (4) can provide a magnetic field to the sorting column (1) so that the minerals in the sorting column (1) can have different settling velocities, thereby sorting the minerals. The excitation coil (4) includes a series of components fitted from top to bottom. Multiple sub-coils are arranged on the outer circumferential surface of the sorting column (1), each sub-coil being connected to a current controller to form a changing magnetic field inside the sorting column (1) to sort the minerals; an inclined sorting column (6) is provided on the upper part of the sorting column (1), the lower end of the inclined sorting column (6) being connected to the sorting column (1), an overflow groove (62) is provided on the upper end of the inclined sorting column (6), and an overflow port (63) is provided on the overflow groove (62); multiple sets of permanent magnet blocks (7) are symmetrically arranged on both sides of the inclined sorting column (6), the spacing between the permanent magnet blocks (7) in each set is adjustable, and the permanent magnet blocks (7) can make a uniform magnetic field form inside the inclined sorting column (6).

2. The magnetic-gravity combined sorting device according to claim 1, characterized in that, The bottom of the sorting column (1) is provided with a pulsating hole (11). The pulsating device (5) includes a diaphragm (51) covering the pulsating hole (11) and a reciprocating drive mechanism (52) connected to the diaphragm (51). The reciprocating drive mechanism (52) can drive the diaphragm (51) to reciprocate so as to form a pulse flow in the sorting column (1).

3. The magnetic-gravity combined sorting device according to claim 1, characterized in that, The current controller can supply power to the multiple sub-coils sequentially from top to bottom to form a changing magnetic field that pulls the sorting column (1) downwards.

4. The magnetic-gravity combined sorting device according to claim 1, characterized in that, The inclined sorting column (6) is provided with multiple parallel inclined plates (61), each of which is a rigid magnetic inclined plate. The spacing between the multiple inclined plates (61) is adjustable so as to divide the space inside the inclined sorting column (6).

5. The magnetic-gravity combined sorting device according to claim 1, characterized in that, The sorting column (1) is also equipped with a stirring device (2). The stirring device (2) includes a stirring impeller (22) disposed in the sorting column (1) and a driving member (21) connected to the stirring impeller (22). The driving member (21) is disposed 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) is connected to the driving member (21) by a transmission rod. The driving member (21) can drive the stirring impeller (22) to rotate.

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

7. The magnetic-gravity combined sorting device according to claim 6, characterized in that, The water distribution component (3) is a funnel-shaped water distribution component with its opening facing upwards.

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