Pulse curve regulation and control magnetic separation device

Abstract

The invention relates to a magnetic separation device, and discloses a pulsation curve regulation and control magnetic separation device which comprises a quick-return movement mechanism arranged on a magnetic separator, the quick-return movement mechanism enables pulsation ore pulp in the magnetic separator to form asymmetric reciprocating movement, or a pump machine is arranged at the bottom of the magnetic separator; the pump machine supplements liquid into the bottom of the magnetic separator to reduce the descending speed of pulsating ore pulp, so that the pulsating ore pulp in the magnetic separator forms asymmetric reciprocating motion, or a non-quick-return motion mechanism is arranged on the magnetic separator, electrically connected with the control assembly and controlled by the control assembly to do quick-return motion, and the pulsating ore pulp in the magnetic separator does non-symmetric reciprocating motion. And therefore, pulsating ore pulp in the magnetic separator forms asymmetric reciprocating motion. The pulsation curve regulation and control magnetic separation device can improve the recovery rate of magnetic minerals in gradient magnetic separation and improve the separation efficiency of magnetic separation.

Description

Technical Field

[0001] The invention relates to a magnetic separation device, in particular to a pulsation curve regulated magnetic separation device. Background Art

[0002] As one of the most effective magnetic separation technologies, high gradient magnetic separation has been widely used in the separation of fine particles and weak magnetic minerals, such as strategic mineral resources such as hematite, limonite, ilmenite, chromite and rare earth. In the development of high gradient magnetic separation technology, the optimization of equipment structure has continuously promoted the breakthrough of separation performance. As the most successful improvement method, pulsating slurry combined with high gradient magnetic separation technology has spawned a vertical ring pulsating high gradient magnetic separator that is popular all over the world in my country. In this equipment, the pulsating slurry can effectively overcome the blockage of magnetic medium through up and down reciprocating motion, thereby improving the separation selectivity.

[0003] At present, the high gradient magnetic separator has the following problems when in use: the pulsation speed of the slurry in the vertical ring pulsating high gradient magnetic separator is controlled by the conventional sinusoidal symmetric function. Due to the existence of the feeding speed, the superposition of the sinusoidal pulsation speed and the feeding speed causes the combined speed of the slurry going down to be much greater than the combined speed going up. While this method solves the blockage of the magnetic medium, it also causes excessive fluid resistance in the downward stroke, resulting in a shorter particle retention time, which affects the adsorption of weak magnetic minerals on the surface of the magnetic medium. In other words, under the control of the conventional pulsation curve, there is still a contradiction between the strengthening of the looseness of the material and the capture of weak magnetic minerals. Such an unbalanced configuration of the up and down speeds limits the further improvement of the efficiency of high gradient magnetic separation.

[0004] In view of this, it is necessary to design a pulsation curve controlled magnetic separation device that can overcome the above technical difficulties and effectively solve or alleviate the above technical difficulties. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a pulsation curve regulated magnetic separation device, which can improve the recovery rate of magnetic minerals in gradient magnetic separation and improve the separation efficiency of magnetic separation.

[0006] In order to achieve the above-mentioned purpose, the present invention provides a pulsation curve regulated magnetic separation device, comprising a quick return motion mechanism arranged on a magnetic separator, the quick return motion mechanism causes the pulsating slurry in the magnetic separator to form an asymmetric reciprocating motion, or a pump is arranged at the bottom of the magnetic separator, the pump reduces the downward speed of the pulsating slurry by replenishing liquid in the bottom of the magnetic separator, so that the pulsating slurry in the magnetic separator forms an asymmetric reciprocating motion, or a non-quick return motion mechanism is arranged on the magnetic separator, the non-quick return motion mechanism is electrically connected to a control component, and the non-quick return motion mechanism is controlled by the control component to perform a quick return motion, so that the pulsating slurry in the magnetic separator forms an asymmetric reciprocating motion.

[0007] Preferably, the quick return motion mechanism includes a transmission box arranged at the bottom of the magnetic separator and a quick return motion component arranged in the transmission box. The quick return motion component performs a quick return motion in the transmission box, so that the pulsating slurry in the magnetic separator forms an asymmetric reciprocating motion.

[0008] Preferably, the inertial spring motion assembly includes a pull rod arranged on one side of the transmission box and an adjusting hand wheel arranged on a side of the transmission box away from the pull rod, and a soft spring is arranged on one end of the adjusting hand wheel located in the transmission box to make the pull rod and the adjusting hand wheel resist each other, so that the pulsating slurry in the magnetic separator forms an asymmetric reciprocating motion.

[0009] Preferably, the pull rod is coaxially arranged with the adjusting hand wheel.

[0010] Preferably, a stopper is provided at one end of the pull rod in the transmission box, and the stopper is coaxially arranged with the adjusting hand wheel.

[0011] Preferably, a buffer is provided between the stopper and the inner wall of the transmission box.

[0012] Preferably, the non-quick-return motion mechanism includes an eccentric connecting rod mechanism and a cam reciprocating mechanism, the cam reciprocating motion mechanism includes a cam frame fixed on the inner walls around the bottom of the magnetic separator, the cam frame is provided with a follower, the cam frame is also provided with a cam, the cam and the follower are abutted, a connecting rod is provided at the end of the cam, a connecting rod is provided on the connecting rod, the end of the connecting rod is connected to the driving member away from the connecting rod, and the driving member is electrically connected to the control component.

[0013] Preferably, the eccentric connecting rod mechanism includes a connecting rod frame arranged on the inner walls around the bottom of the magnetic separator, a slider is slidably arranged on the connecting rod frame, an eccentric connecting rod is rotatably arranged on the slider, an eccentric driving assembly is arranged on the end of the eccentric connecting rod away from the slider, the eccentric driving assembly is connected to the driving member, and the driving member is electrically connected to the control assembly.

[0014] Preferably, the eccentric driving assembly comprises an eccentric wheel arranged at one end of the eccentric connecting rod away from the sliding block, and the eccentric wheel is connected to the driving member through an eccentric shaft so as to be able to drive the sliding block to perform asymmetric movement on the connecting rod frame.

[0015] Preferably, the control assembly includes a control member and a driving member, and the control member controls the driving member to drive the non-quick-return motion mechanism to perform quick-return motion.

[0016] Through the above scheme, the pulsation curve controlled magnetic separation device provided by the present invention forms an asymmetric reciprocating motion of the pulsating slurry in the magnetic separator by setting a quick return motion mechanism, thereby increasing the upward speed of the pulsating slurry, prolonging the retention time of mineral particles, and strengthening the capture of weakly magnetic minerals on the surface of the magnetic medium. It effectively improves the unbalanced mechanism of the upward and downward speeds of the pulsating slurry, realizes the simultaneous enhancement of material loosening and weakly magnetic mineral capture in the high gradient magnetic separation process, and improves the recovery rate of the mineral. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a specific implementation mode of the pulsation curve controlled magnetic separation device of the present invention;

[0018] Figure 2 It is a structural schematic diagram of a second specific implementation mode of the pulsation curve controlled magnetic separation device of the present invention;

[0019] Figure 3 It is a structural schematic diagram of a third specific implementation mode of the pulsation curve controlled magnetic separation device of the present invention;

[0020] Figure 4 It is a relationship diagram of the downward fluid drag force of the pulsation curve regulation magnetic separation device of the present invention changing with the pulsation frequency;

[0021] Figure 5 It is a schematic diagram of a conventional pulsation curve and an asymmetric pulsation curve of the pulsation curve regulation magnetic separation device of the present invention;

[0022] Figure 6 It is a relationship diagram between the pulsation curve of the pulsation curve regulation magnetic separation device of the present invention and the drag force of the pulsating slurry up and down fluid;

[0023] Figure 7 It is a principle diagram of magnetic separation effect of the pulsation curve regulation magnetic separation device without pulp and pulsation action of the present invention;

[0024] Figure 8 It is a principle diagram of the magnetic separation effect of the conventional pulsation curve of the pulsation curve regulation magnetic separation device of the present invention;

[0025] Fig. 9 It is a principle diagram of the magnetic separation effect of the asymmetric pulsation curve of the pulsation curve regulation magnetic separation device of the present invention.

[0026] Description of Reference Numerals

[0027] 1. Transmission box; 11. Connecting rod; 12. Connecting rod; 13. Moving part; 14. Cam; 15. Cam frame; 2. Buffer; 3. Pull rod; 4. Soft spring; 5. Connecting rod frame; 6. Adjusting hand wheel; 7. Sliding block; 8. Eccentric connecting rod; 9. Eccentric wheel; 10. Eccentric shaft. DETAILED DESCRIPTION

[0028] The specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention, and the protection scope of the present invention is not limited to the following specific embodiments.

[0029] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "disposed", "provided with", "installed", "matched", and "connected" should be understood in a broad sense. For example, the connection can be a direct connection or an indirect connection through an intermediate connector, and can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] In the present invention, unless otherwise specified, the directional words used, such as "facing" and "backward", are defined based on the direction in which the elastic support mechanism is used. Specifically, in the drawings provided by the present invention, the orientation or positional relationship used is based on the orientation or positional relationship shown in the drawings, and 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 on the present invention. The orientation terms of the present invention should be understood in conjunction with the actual installation state.

[0031] like Figures 1 to 9 As shown, the present invention provides a pulsation curve regulated magnetic separation device, comprising a quick return motion mechanism arranged on a magnetic separator, the quick return motion mechanism causes the pulsating ore pulp in the magnetic separator to form an asymmetric reciprocating motion, or a pump is arranged at the bottom of the magnetic separator, the pump reduces the downward speed of the pulsating ore pulp by replenishing liquid in the bottom of the magnetic separator, so that the pulsating ore pulp in the magnetic separator forms an asymmetric reciprocating motion, or a non-quick return motion mechanism is arranged on the magnetic separator, the non-quick return motion mechanism is electrically connected to the control component, and the non-quick return motion mechanism is controlled by the control component to perform quick return motion, so that the pulsating ore pulp in the magnetic separator forms an asymmetric reciprocating motion.

[0032] It should be noted that the pulsation curve controlled magnetic separation device provided by the present invention can improve the recovery rate of magnetic minerals in gradient magnetic separation and improve the separation efficiency of magnetic separation.

[0033] It can be understood that in the magnetic separator, the downward speed of the pulsating slurry is the speed of the pulsating slurry plus the speed of the feed, and the upward speed of the pulsating slurry is the speed of the pulsating slurry minus the speed of the feed. By setting a quick return motion mechanism in the magnetic separator to perform quick return motion, the pulsating slurry in the magnetic separator forms an asymmetric reciprocating motion, or a pump is set at the bottom of the magnetic separator. The pump can be a water pump, which provides an upward water flow to the magnetic separator. Alternatively, a non-quick return motion mechanism can be set in the magnetic separator, and the non-quick return motion mechanism can be controlled by the control component to perform quick return motion, so that the upward speed of the pulsating slurry is increased, the retention time of mineral particles is prolonged, and the capture of weak magnetic minerals on the surface of the magnetic medium is strengthened, which effectively improves the imbalance mechanism of the up and down speeds of the pulsating slurry, and realizes the simultaneous enhancement of material loosening and weak magnetic mineral capture in the high gradient magnetic separation process, thereby improving the recovery rate of the mineral.

[0034] Furthermore, if Figure 1 As shown, as some specific embodiments of the present invention, the quick return motion mechanism includes a transmission box 1 arranged at the bottom of the magnetic separator and a quick return motion component arranged in the transmission box 1. The quick return motion component performs a quick return motion in the transmission box 1, so that the pulsating slurry in the magnetic separator forms an asymmetric reciprocating motion.

[0035] It can be understood that the quick return motion mechanism makes a quick return motion in the magnetic separator, which can make the pulsating slurry in the magnetic separator form an asymmetric reciprocating motion. For example, when the sample particle size of the magnetic separator is P90=0.074mm, the TiO2 grade is 9.00%. The pulsation stroke and slurry concentration are set to 12mm and 5% respectively. At the same time, under the experimental conditions of magnetic field intensity of 0.7T, slurry speed of 10cm / s and pulsation frequency of 5r / s, the grade, recovery rate and separation efficiency of the magnetic products of conventional high gradient magnetic separation and high gradient magnetic separation under various asymmetric pulsation curves are compared. It can be seen that the asymmetric pulsation curve with faster upward speed and slower downward speed can obtain 23.94% titanium dioxide concentrate grade, 66.78% recovery rate and 50.46% separation efficiency for the separation of ilmenite, which is comparable to the conventional normal Compared with the chordal pulsation curve, the recovery rate is increased by 5.68% and the separation efficiency is increased by 5.05%. Compared with the conventional pulsation curve, the asymmetric pulsation curve has a higher upward speed and a lower downward speed to increase the capture rate, resulting in higher separation performance. The asymmetric pulsation curve can flexibly adjust the upward speed of the slurry by changing the asymmetry coefficient of the pulsation curve, provide the necessary upward loosening, and reduce the downward speed of the slurry, thereby achieving the synchronous enhancement of loosening and capture, further improving the separation efficiency of the pulsating slurry high gradient magnetic separator and improving the recovery rate of the mineral.

[0036] Furthermore, as some specific embodiments of the present invention, the quick return motion assembly includes a pull rod 3 arranged on one side of the transmission box 1 and an adjusting handwheel 6 arranged on the side of the transmission box 1 away from the pull rod 3, and a soft spring 4 is provided at one end of the adjusting handwheel 6 in the transmission box 1 to make the pull rod 3 and the adjusting handwheel 6 resist each other, so that the pulsating slurry in the magnetic separator forms an asymmetric reciprocating motion.

[0037] It can be understood that by pushing the pull rod 3 to squeeze the soft spring 4, when the pull rod 3 is released, the pull rod 3 provides a rebound force to push the pull rod 3, and makes a quick return movement in the transmission box 1. The transmission box 1 can be connected to the magnetic separator. The direction of the rebound force provided by the pull rod 3 to push the pull rod 3 is opposite to the feeding direction of the mineral in the magnetic separator. Therefore, the upward speed of the pulsating slurry can be increased, the retention time of the mineral particles can be prolonged, and the capture of weak magnetic minerals on the surface of the magnetic medium can be strengthened. The imbalance mechanism of the up and down speeds of the pulsating slurry is effectively improved, and the simultaneous enhancement of material loosening and weak magnetic mineral capture in the high gradient magnetic separation process is achieved, thereby improving the recovery rate of the mineral.

[0038] Furthermore, as some specific embodiments of the present invention, the pull rod 3 is coaxially arranged with the adjusting hand wheel 6, so that the soft spring 4 can provide the maximum rebound force for pushing the pull rod 3, thereby reducing energy loss.

[0039] Furthermore, as some specific embodiments of the present invention, a stopper is provided at one end of the pull rod 3 in the transmission box 1, and the stopper is coaxially arranged with the adjusting hand wheel 6. The stopper may be disc-shaped and opposite to the adjusting hand wheel 6. When the soft spring 4 provides a rebound force to push the pull rod 3, it can receive the force to the maximum extent and reduce energy loss.

[0040] Furthermore, as some specific embodiments of the present invention, a buffer member 2 is arranged between the block and the inner wall of the transmission box 1. The buffer member 2 can be a hard rubber spring. When the pull rod 3 is bounced back by the soft spring 4, the block is prevented from directly contacting the inner wall of the transmission box 1, and the transmission box 1 is prevented from colliding with the block and causing losses, thereby improving the use efficiency of the equipment.

[0041] Further, as some specific embodiments of the present invention, Figure 3 As shown, the non-quick return motion mechanism is an eccentric connecting rod mechanism or a cam reciprocating mechanism. The cam reciprocating mechanism includes a cam frame 15 fixed on the inner walls around the bottom of the magnetic separator. A follower 13 is arranged on the cam frame 15. A cam 14 is also arranged on the cam frame 15. The cam 14 abuts against the follower 13. A connecting rod 11 is arranged at the end of the cam 14. A connecting rod 12 is arranged on the connecting rod 11. The end of the connecting rod 12 away from the connecting rod 11 is connected to the driving member, and the driving member is electrically connected to the control component.

[0042] It can be understood that the driving member can be a stepper motor connected to the connecting rod 12, and the control component can be a PLC control system, which is electrically connected to the stepper motor to control the stepper motor to provide different moving speeds for the connecting rod 12. When the connecting rod 12 drives the follower 13 to move in the same direction as the upward direction of the pulsating slurry on the cam frame 15, the movement of the connecting rod 12 is accelerated, so that the connecting rod 11 drives the follower 13 to accelerate the running speed. When the connecting rod 12 drives the follower 13 to move in the same direction as the downward direction of the pulsating slurry on the cam frame 15, the movement of the connecting rod 12 is slowed down, so that the connecting rod 11 drives the follower 13 to slow down the running speed, thereby making a quick return movement, so that the pulsating slurry in the magnetic separator forms an asymmetric reciprocating motion, prolongs the retention time of mineral particles, strengthens the capture of weak magnetic minerals on the surface of the magnetic medium, effectively improves the unbalanced mechanism of the up and down speeds of the pulsating slurry, and realizes the simultaneous enhancement of material loosening and weak magnetic mineral capture in the high gradient magnetic separation process, thereby improving the recovery rate of the mineral.

[0043] Further, as some specific embodiments of the present invention, Figure 2 As shown, the eccentric connecting rod mechanism includes a connecting rod frame 5 arranged on the inner walls around the bottom of the magnetic separator, a slider 7 is slidably arranged on the connecting rod frame 5, an eccentric connecting rod 8 is rotatably arranged on the slider 7, an eccentric driving assembly is arranged on the end of the eccentric connecting rod 8 away from the slider 7, the eccentric driving assembly is connected to the driving member, and the driving member is electrically connected to the control assembly.

[0044] It can be understood that the driving member can be a stepper motor connected to the eccentric driving component, and the control component can be a PLC control system electrically connected to the stepper motor to control the stepper motor slider 7 to provide different moving speeds. When the eccentric driving component drives the slider 7 to move in the same direction as the upward direction of the pulsating ore pulp through the eccentric connecting rod 8, the movement of the stepper motor is accelerated so that the slider 7 accelerates the speed of running on the connecting rod frame 5. The connecting rod frame 5 can be a plate arranged on the inner wall around the bottom of the magnetic separator, and the slider 7 is slidably arranged between the plates. When the eccentric driving component drives the slider 7 to move in the same direction as the downward direction of the pulsating ore pulp through the eccentric connecting rod 8, the movement of the stepper motor is slowed down so that the slider 7 slows down the speed of running between the connecting rod frames 5, thereby making a quick return motion, so that the pulsating ore pulp in the magnetic separator forms an asymmetric reciprocating motion, prolongs the retention time of mineral particles, strengthens the capture of weak magnetic minerals on the surface of the magnetic medium, effectively improves the unbalanced mechanism of the up and down speeds of the pulsating ore pulp, and realizes the simultaneous enhancement of material loosening and weak magnetic mineral capture in the high gradient magnetic separation process, thereby improving the recovery rate of the mineral.

[0045] Furthermore, as some specific embodiments of the present invention, the eccentric drive assembly includes an eccentric wheel 9 arranged at the end of the eccentric connecting rod 8 away from the slider 7, and the eccentric wheel 9 is connected to the driving member through the eccentric shaft 10 so as to be able to drive the slider to perform asymmetric movement on the connecting rod frame.

[0046] It can be understood that when the eccentric drive assembly drives the slider 7 to move in the same direction as the upward direction of the pulsating slurry through the eccentric connecting rod 8, the movement of the stepper motor is accelerated, and the rotation of the eccentric wheel 9 is accelerated through the eccentric shaft 10, so that the slider 7 accelerates the speed of running between the connecting rod frame 5, thereby making a quick return motion, so that the pulsating slurry in the magnetic separator forms an asymmetric reciprocating motion, prolongs the retention time of mineral particles, strengthens the capture of weak magnetic minerals on the surface of the magnetic medium, effectively improves the unbalanced mechanism of the up and down speeds of the pulsating slurry, and realizes the simultaneous enhancement of material loosening and weak magnetic mineral capture in the high gradient magnetic separation process, thereby improving the recovery rate of the mineral.

[0047] Further, as some specific embodiments of the present invention, the control component includes a control storage component and a control component, and the control storage component controls the control component to drive the non-quick-return motion mechanism to perform quick-return motion.

[0048] It can be understood that a predetermined program is preset in the control storage component, and the control component is electrically connected to the drive component. When the eccentric drive component drives the slider 7 to move in the same direction as the upward direction of the pulsating slurry through the eccentric connecting rod 8, the movement of the stepper motor is accelerated, or when the eccentric drive component drives the slider 7 to move in the same direction as the upward direction of the pulsating slurry through the eccentric connecting rod 8, the movement of the stepper motor is accelerated, thereby making a quick return motion, so that the pulsating slurry in the magnetic separator forms an asymmetric reciprocating motion, prolongs the retention time of mineral particles, strengthens the capture of weak magnetic minerals on the surface of the magnetic medium, effectively improves the unbalanced mechanism of the up and down speeds of the pulsating slurry, and realizes the simultaneous enhancement of material loosening and weak magnetic mineral capture in the high gradient magnetic separation process, thereby improving the recovery rate of the mineral.

[0049] In order to better understand the technical solution and method of use of the present invention, the preferred embodiments are described below in combination with relatively comprehensive preferred technical features.

[0050] A transmission box 1 is arranged at the bottom of the magnetic separator, and the transmission box 1 is communicated with the magnetic separator. A pull rod 3 is arranged through one side of the transmission box 1, and an adjusting hand wheel 6 is arranged through the side of the transmission box 1 away from the pull rod 3. The pull rod 3 and the adjusting hand wheel 6 are arranged coaxially, and a soft spring 4 is arranged at one end of the adjusting hand wheel 6 in the transmission box 1, and a stopper is arranged at one end of the pull rod 3 in the transmission box 1. A buffer 2 is arranged between the stopper and the inner wall of the transmission box 1, and the buffer 2 can be a hard rubber spring. The pull rod 3 is pushed to squeeze the soft spring 4, and when the pull rod is released, the soft spring 4 is pressed. When rod 3 is moved, pull rod 3 provides a rebound force to push pull rod 3, and makes a quick return motion in transmission box 1. The direction of the rebound force provided by pull rod 3 to push pull rod 3 is opposite to the feeding direction of the mineral in the magnetic separator. Therefore, the upward speed of the pulsating slurry can be increased, the retention time of mineral particles can be prolonged, and the capture of weakly magnetic minerals on the surface of the magnetic medium can be strengthened, which effectively improves the unbalanced mechanism of the up and down speeds of the pulsating slurry, realizes the simultaneous enhancement of material loosening and weakly magnetic mineral capture in the high gradient magnetic separation process, and improves the recovery rate of the mineral.

[0051] The pulsation curve controlled magnetic separation device provided by the present invention enables the pulsating slurry in the magnetic separator to form an asymmetric reciprocating motion by arranging a quick return motion mechanism, thereby increasing the upward speed of the pulsating slurry, prolonging the retention time of mineral particles, and strengthening the capture of weakly magnetic minerals on the surface of the magnetic medium. It effectively improves the unbalanced mechanism of the upward and downward speeds of the pulsating slurry, realizes the simultaneous enhancement of material loosening and weakly magnetic mineral capture in the high gradient magnetic separation process, and improves the recovery rate of the minerals.

[0052] 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 can be subjected to a variety of simple modifications. Including the combination of various specific technical features in any suitable manner. 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 pulsation curve controlled magnetic separation device, characterized in that: It includes a quick return motion mechanism arranged on the magnetic separator, wherein the quick return motion mechanism causes the pulsating slurry in the magnetic separator to form an asymmetric reciprocating motion, or, A pump is provided at the bottom of the magnetic separator, and the pump reduces the downward speed of the pulsating slurry by replenishing liquid in the bottom of the magnetic separator, so that the pulsating slurry in the magnetic separator forms an asymmetric reciprocating motion, or, The magnetic separator is provided with a non-quick return motion mechanism, which is electrically connected to a control component. The non-quick return motion mechanism is controlled by the control component to perform quick return motion, so that the pulsating slurry in the magnetic separator forms an asymmetric reciprocating motion.

2. The pulsation curve controlled magnetic separation device according to claim 1, characterized in that: The quick-return motion mechanism comprises a transmission box (1) arranged at the bottom of the magnetic separator and a quick-return motion component arranged in the transmission box (1); the quick-return motion component performs a quick-return motion in the transmission box (1), so that the pulsating ore pulp in the magnetic separator forms an asymmetric reciprocating motion.

3. The pulsation curve controlled magnetic separation device according to claim 2, characterized in that: The quick-return motion assembly comprises a pull rod (3) arranged on one side of the transmission box (1) and an adjusting hand wheel (6) penetrating the side of the transmission box (1) away from the pull rod (3); a soft spring (4) is arranged at one end of the adjusting hand wheel (6) located in the transmission box (1) so that the pull rod (3) and the adjusting hand wheel (6) are abutted against each other, so that the pulsating slurry in the magnetic separator forms an asymmetric reciprocating motion.

4. The pulsation curve controlled magnetic separation device according to claim 3, characterized in that: The pull rod (3) and the adjusting hand wheel (6) are coaxially arranged.

5. The pulsation curve controlled magnetic separation device according to claim 3, characterized in that: A stopper is provided at one end of the pull rod (3) located in the transmission box (1), and the stopper is coaxially arranged with the adjusting hand wheel (6).

6. The pulsation curve controlled magnetic separation device according to claim 5, characterized in that: A buffer member (2) is provided between the stopper and the inner wall of the transmission box (1).

7. The pulsation curve controlled magnetic separation device according to claim 1, characterized in that: The non-quick-return motion mechanism is an eccentric connecting rod mechanism or a cam reciprocating mechanism, and the cam reciprocating mechanism includes a cam frame (15) fixed on the inner walls around the bottom of the magnetic separator, and a follower (13) is arranged on the cam frame (15). A cam (14) is also arranged on the cam frame (15), and the cam (14) is abutted against the follower (13). A connecting rod (11) is arranged at the end of the cam (14), and a connecting rod (12) is arranged on the connecting rod (11). The end of the connecting rod (12) away from the connecting rod (11) is connected to a driving member, and the driving member is electrically connected to the control component.

8. The pulsation curve controlled magnetic separation device according to claim 7, characterized in that: The eccentric connecting rod mechanism comprises a connecting rod frame (5) arranged on the inner walls around the bottom of the magnetic separator, a slider (7) is slidably arranged on the connecting rod frame (5), an eccentric connecting rod (8) is rotatably arranged on the slider (7), an eccentric driving component is arranged on the end of the eccentric connecting rod (8) away from the slider (7), the eccentric driving component is connected to the driving member, and the driving member is electrically connected to the control component.

9. The pulsation curve controlled magnetic separation device according to claim 8, characterized in that: The eccentric drive assembly comprises an eccentric wheel (9) arranged at one end of the eccentric connecting rod (8) away from the slider (7); the eccentric wheel (9) is connected to the driving member via an eccentric shaft (10) so as to be able to drive the slider to perform asymmetric movement on the connecting rod frame.

10. The pulsation curve controlled magnetic separation device according to claim 1, characterized in that: The control assembly includes a control storage component and a control component, and the control storage component controls the control component to drive the non-quick-return motion mechanism to perform quick-return motion.

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