Iron bead jetting sorting device and method capable of improving tailing accuracy of photoelectric sorting equipment

Abstract

The present invention provides an iron bead jet sorting device and method that can improve the tail throwing accuracy of photoelectric sorting equipment, the device includes a box, an electromagnet, a driving rod, a coil, an impact plate, an impact rod and an iron bead; an electric control device is arranged outside the box; the electromagnet is matched and arranged on the inner side of the lower part of the box and is electrically connected to the electric control device; the coil is evenly wound around the outside of the driving rod and is electrically connected to the electric control device; after the electromagnet and the coil wound around the outside of the driving rod are connected to the same direction power supply by the electric control device, a repulsive force is generated between the driving rod and the electromagnet, and the driving rod is driven by the repulsive force to impact the impact plate upward at a high speed, so that the impact plate flies upward at a high speed and hits the impact rod, and then the impact rod hits the corresponding iron bead above it at a high speed upward, and finally the iron bead is ejected and flies out at a high speed to hit the waste rock. The present invention has reasonable structural design, fast response time, high precision, good sorting effect, no tail gas, and is expected to realize the continuous production of physical sorting of small-sized waste rock.

Description

Technical Field

[0001] The present invention relates to the technical field of material sorting, and in particular to an iron bead jetting sorting device and method capable of improving the tailing accuracy of photoelectric sorting equipment. Background Art

[0002] Photoelectric separation technology is one of the important methods for ore pre-selection and tailings discarding. It does not consume a lot of water resources like gravity separation, magnetic separation and other technologies, nor does it need to use a large amount of chemical agents like flotation technology. It can improve the feed grade before ore crushing or grinding.

[0003] Intelligent photoelectric beneficiation technology is developing very rapidly, mainly including: color sorting (high-definition image recognition), X-ray penetration (XRT), X-ray surface radiation (XRF), laser induction, microwave, etc. At present, the more mature photoelectric beneficiation technologies in the world are color sorting (high-definition image recognition) and X-ray penetration (XRT) are more mainstream and have more industrial applications. Intelligent photoelectric beneficiation machines, whether they are high-definition intelligent image beneficiation machines or X-ray intelligent beneficiation machines, are mainly composed of four modules: vibration distribution system, X-ray transmission detection system (high-definition image recognition system), computer software algorithm system, and jet sorting device. The distribution system realizes the single-layer flat state of minerals; the X-ray transmission detection system combines with the high-definition image recognition system to realize the marking of mine waste; the algorithm system studies the physical characteristics of the ore, and can realize the accurate identification of mine waste in combination with the detection system; the jet sorting device can receive instructions from the algorithm system and separate the mine waste in real time.

[0004] There are many types of jet separation devices, such as air jet, mechanical deflection, continuous water jet, and plate-beating. Air jet has a wide range of applications, high jet frequency and separation efficiency, and is the main gangue removal device. The plate-beating device needs to constantly collide with the ore, is easy to wear, and has a limited frequency and low efficiency. It is only used in the separation of coarse-grained minerals.

[0005] At present, the size of the materials that can be separated by air jet is generally larger than 1cm. According to on-site investigation, when there are ores with interlayers of impurities and target minerals, they are sometimes judged as waste by the optical separation system, resulting in an increase in the grade of tailings; sometimes they are judged as target minerals by the optical separation system, resulting in a decrease in the grade of concentrate. Therefore, it is necessary to crush the materials to millimeter scale to fully dissociate the target minerals and impurities. At this time, it is necessary to improve the accuracy of material identification and develop the accuracy of jet separation materials. At present, the accuracy of X-ray identification can meet the scale of 1mm or even smaller, so it is urgent to develop and improve the accuracy of jetting materials.

[0006] At present, the response time of air jet is 1ms. Under the conditions of 3m / s material distribution system speed and 1cm ore size, the required response time is 1 / 300=3ms, which is sufficient. However, if the ore size is reduced to 1mm, the response time is 0.3ms, which is not enough. Therefore, it is necessary to change the jet sorting method to meet the demand of ore size reduction.

[0007] To sum up, it is necessary to make further innovations on existing technologies. Summary of the invention

[0008] In response to the technical problems existing in the above-mentioned background technology, the present invention proposes an iron bead jet sorting device which can improve the tail discarding accuracy of the photoelectric sorting equipment. The device has a reasonable structural design, fast response time, high accuracy, good sorting effect, and no tail gas, and is expected to realize the continuous production of physical sorting of small-size waste rock.

[0009] In order to solve the above technical problems, the present invention provides an iron bead jet sorting device that can improve the tail-dropping accuracy of photoelectric sorting equipment, which includes a box body, an electromagnet, a driving rod, a coil, an impact plate, an impact rod and iron beads; the interior of the box body has a accommodating space, and the outer side is matched with an electric control device; the electromagnet is matched and arranged on the lower inner side of the box body and is electrically connected to the electric control device; the driving rod is matched and vertically installed on the inner side of the middle section of the box body, and it is located directly above the electromagnet and corresponds to it one by one; the coil is evenly wound around the outside of the driving rod and is electrically connected to the electric control device; the impact plate is matched and installed on the upper inner side of the box body, and it is located directly above the driving rod and is electrically connected to the electric control device. They correspond one to one; the impact rod is also matched and vertically installed on the upper inner side of the box body, which is located directly above the impact plate and corresponds one to one with it; the iron ball is matched and movably embedded in the top of the box body, which is located directly above the impact rod and corresponds one to one with it; after the electromagnet and the coil wound around the outside of the driving rod are supplied with the same-direction power by the electric control device, a repulsive force is generated between the driving rod and the electromagnet, and the driving rod is driven by the repulsive force to impact the impact plate upward at a high speed, so that the impact plate flies upward at a high speed and hits the impact rod, and then the impact rod hits the corresponding iron ball above it at a high speed, and finally the iron ball is ejected at a high speed to hit the waste rock.

[0010] The iron bead jetting sorting device capable of improving the tailing accuracy of the photoelectric sorting equipment, wherein: the box body is composed of a lower box body, a middle box body and an upper box body stacked from bottom to top;

[0011] The top of the lower box body is evenly provided with electromagnet installation grooves, and the upper circumferential edge thereof is matched with a lower box body installation step;

[0012] The middle box is matched and installed on the upper part of the lower box, and its bottom is uniformly protruded downward along the circumferential edge to form a middle box installation wall, and the top is matched along the circumferential edge to open a middle box installation step; the area of ​​the middle box located inside the middle box installation wall is matched and penetrated along the vertical direction to open a drive rod installation through hole that matches the electromagnet installation groove; the middle box is matched and connected with the lower box installation step of the lower box through the middle box installation wall;

[0013] The upper box body is matched and installed on the upper part of the middle box body, and its bottom is uniformly protruded downward along the circumferential edge to form an upper box body mounting wall and is connected with the middle box body mounting step of the middle box body through the upper box body mounting wall; the upper box body is evenly opened with a collision rod mounting groove corresponding to the driving rod mounting through hole from the top along the vertical direction, and a collision plate mounting groove is matched and opened from the center of the groove bottom of the collision rod mounting groove along the vertical direction, and a driving rod through hole is matched and opened from the center of the groove bottom of the collision plate mounting groove along the vertical direction; the collision rod mounting groove is matched with an iron bead mounting position for movably embedding the iron bead along the inner edge of the upper end groove of the collision rod mounting groove.

[0014] The iron bead jetting sorting device capable of improving the tail-dropping accuracy of the photoelectric sorting equipment, wherein: the electromagnet is matched and embedded in the electromagnet mounting groove.

[0015] The iron bead jet sorting device capable of improving the tail-dropping accuracy of the photoelectric sorting equipment, wherein: the driving rod is matched and passed through the driving rod mounting through hole from bottom to top, the upper end of which extends to the top of the middle box body and is limited to the top surface of the middle box body by a driving rod limit block protruding from the outer wall of the upper end thereof, and the lower end extends to the bottom of the middle box body; the upper end rod body of the driving rod can movably pass through the driving rod through hole; the coil is evenly wound around the outside of the rod body of the driving rod located in the driving rod mounting through hole, and the driving rod and the coil as a whole can movably shuttle in the driving rod mounting through hole.

[0016] The iron bead jetting sorting device capable of improving the tail-dropping accuracy of the photoelectric sorting equipment, wherein: the impact plate is matched and embedded in the impact plate mounting groove.

[0017] The iron bead jet sorting device can improve the tail-dropping accuracy of the photoelectric sorting equipment, wherein: the impact rod is matched and inserted into the impact rod installation groove from top to bottom, and its lower end extends into the impact plate installation groove and is limited to the inner groove bottom of the impact rod installation groove by the impact rod limit block protruding from the outer wall of its lower end.

[0018] The iron bead jetting sorting device capable of improving the tail-dropping accuracy of the photoelectric sorting equipment, wherein: the iron beads and the impact rods thereunder are arranged in a 5*5 square pattern.

[0019] The iron bead jet sorting device can improve the tail-dropping accuracy of the photoelectric sorting equipment, wherein: the iron bead jet sorting device also includes an iron bead recovery device; the iron bead recovery device is matched and arranged on the side where the iron bead is ejected, and is used to recover the ejected iron bead.

[0020] An iron bead jetting sorting method capable of improving the tailing accuracy of photoelectric sorting equipment is based on the above-mentioned iron bead jetting sorting device capable of improving the tailing accuracy of photoelectric sorting equipment; it mainly comprises the following steps:

[0021] 1) The signal of waste rock determined by X-ray detection is transmitted to the electronic control device, which charges the coil on the driving rod at the corresponding position according to the coordinate information, and at the same time supplies power to the electromagnet in the same direction as the coil;

[0022] 2) After the driving rod is energized and extended, it moves at high speed under the electromagnetic repulsion force generated by the electromagnet below it;

[0023] 3) The high-speed driving rod impacts the impact plate above it at high speed, and the impact plate transfers energy to the corresponding impact rod above it;

[0024] 4) The impact rod pushes the corresponding iron ball above it to hit the waste rock, and the waste rock deviates from the original trajectory and falls into the external waste rock collection device. The ore that is not hit by the iron ball still falls into the external concentrate collection device according to the original trajectory, thereby achieving the separation of concentrate and waste rock;

[0025] 5) Finally, all ejected iron beads are recovered through the iron bead recovery device and reinstalled into the iron bead installation position on the top of the upper box for next use.

[0026] By adopting the above technical solution, the present invention has the following beneficial effects:

[0027] The iron bead jet sorting device of the present invention can improve the tailing accuracy of the photoelectric sorting equipment, has a reasonable structural design, can realize the sorting of particles of 1 mm and above by simultaneously jetting multiple groups of iron beads, can effectively increase the response time of the iron bead jet sorting device by arranging iron beads 5*5, and can effectively realize the sorting of small-size mineral materials and the waste rock jetting functions by combining with an X-ray device; as the diameter of the material particles becomes smaller, the side effect of the tail gas will gradually increase, and particles around the target mineral may be mistakenly sprayed, and the iron bead jetting does not have the tail gas effect inherent in the high-pressure airflow jetting, has higher accuracy, and has better sorting effect.

[0028] The iron bead jet sorting method of the present invention, which can improve the tailing accuracy of photoelectric sorting equipment, has a reasonable concept, fast response time, high accuracy, and no tail gas, and is expected to realize continuous production of physical sorting of small-size waste rock, and is suitable for promotion and application. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0030] Figure 1 It is a structural schematic diagram of the iron bead jetting sorting device of the present invention which can improve the tailing accuracy of the photoelectric sorting equipment;

[0031] Figure 2 It is an exploded view of the iron bead jetting sorting device of the present invention which can improve the tail ejection accuracy of the photoelectric sorting equipment;

[0032] Figure 3 The invention is an iron bead jetting sorting device capable of improving the tailing accuracy of photoelectric sorting equipment Figure 2 AA section view. DETAILED DESCRIPTION

[0033] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] The present invention is further explained below in conjunction with specific implementation modes.

[0035] like Figure 1-3 As shown, this embodiment provides an iron bead jet sorting device that can improve the tail-dropping accuracy of the photoelectric sorting equipment, including a box body 1, an electromagnet 2, a driving rod 3, a coil 4, an impact plate 5, an impact rod 6, iron beads 7, an iron bead recovery device and an electronic control device.

[0036] The box body 1 is composed of a lower box body 11, a middle box body 12 and an upper box body 13 stacked from bottom to top.

[0037] The top of the lower box body 11 is evenly and evenly provided with a plurality of electromagnet installation grooves 111 , and the upper circumferential edge thereof is matched with a lower box body installation step 112 .

[0038] The middle box body 12 is matched and installed on the upper part of the lower box body 11, and its bottom is uniformly protruded downward along the circumferential edge to form a middle box installation wall 121, and the top is matched along the circumferential edge to open a middle box installation step 122; at the same time, the area of ​​the middle box body 12 located within the middle box installation wall 121 is matched and penetrated along the vertical direction to open a plurality of drive rod installation through holes 123 that match the electromagnet installation grooves 111; the bottom of the middle box body 12 is matched and connected with the lower box installation step 112 on the upper part of the lower box body 11 through the middle box installation wall 121.

[0039] The upper box body 13 is matched and installed on the upper part of the middle box body 12, and its bottom is uniformly protruded downward along the circumferential edge to form an upper box body installation wall 130 and is matched and connected with the middle box body installation step 122 on the upper part of the middle box body 12 through the upper box body installation wall 130; at the same time, the upper box body 13 is evenly opened with a plurality of impact rod installation grooves 131 that match and correspond to the drive rod installation through holes 123 from the top along the vertical direction, and an impact plate installation groove 132 is matched and opened from the center of the bottom of the impact rod installation groove 131 along the vertical direction, and a drive rod through hole 133 is matched and opened from the center of the bottom of the impact plate installation groove 132 along the vertical direction; at the same time, the impact rod installation groove 131 is matched with an iron bead installation position for embedding the iron bead 7 along the inner edge of its upper end notch.

[0040] The electromagnet 2 has a plurality of electromagnets 2 and is respectively matched and embedded in the electromagnet installation slots 111 of the lower box body 11 of the box body 1; wherein the electromagnet 2 is also electrically connected to the electric control device.

[0041] The driving rod 3 matches the driving rod mounting through hole 123 that passes through the middle box body 12 of the box body 1 from bottom to top, and its upper end extends to the top of the middle box body 12 and is limited to the top surface of the middle box body 12 by the driving rod limit block 31 protruding from the outer wall of the upper end, and the lower end extends to the bottom of the middle box body 12; wherein, the upper end rod body of the driving rod 3 can movably pass through the driving rod through hole 133 of the upper box body 13; the outside of the rod body of the driving rod 3 located in the driving rod mounting through hole 123 is evenly wound with a coil 4, and the driving rod 3 and the coil 4 as a whole can move and shuttle in the driving rod mounting through hole 123; the coil 4 is led out to the outside of the middle box body 12 of the box body 1 and is electrically connected to the electric control device; when it is determined by X-ray detection that the driving rod 3 needs to be started for waste rock, the electric control device starts the power supply to energize the coil 4 outside the required driving rod 3, so that the driving rod 3 is extended after being energized and collides with the impact plate 5 at high speed.

[0042] The impact plate 5 has a plurality of impact plate installation grooves 132 respectively matched and embedded in the upper box body 13 of the box body 1. The impact plate 5 is located above the driving rod 3 and corresponds to it one by one. The impact plate 4 is provided to ensure that the driving rod 3 can achieve energy exchange with the impact rod 6 so that the impact rod 6 can achieve maximum ejection.

[0043] The impact rod 6 is matched and inserted into the impact rod installation groove 131 from top to bottom, and is located above the impact plate 5 and corresponds to it one by one; wherein, the lower end of the impact rod 6 extends into the impact plate installation groove 132 and is limited to the inner groove bottom of the impact rod installation groove 131 by the impact rod limit block 61 protruding from the outer wall of its lower end; the upper end of the impact rod 6 is located inside the impact rod installation groove 131. In this embodiment, the diameter of the impact rod 5 is 0.5 mm and the length is 2 cm.

[0044] The iron bead 7 has multiple and respectively matched and movably embedded in the iron bead installation position at the upper end notch of the impact rod installation groove 131. Among them, the diameter of the iron bead 7 is 0.5mm, which corresponds to the impact rod 6 below one by one and is arranged in a 5*5 square. Among them, the impact rod 6 and the iron bead 7 are both designed as a 5*5 square, which can increase the response time of the iron bead jet sorting device of the present invention, because the speed of the ore conveyor belt is generally 3m / s, the particle diameter is 1mm, and the required response time is 0.3ms; if the X-ray scans 5 lines at a time, and transmits the information of 5 lines of ore particles to the electronic control device at the same time; at the same time, the electronic control device also performs the next step according to the recognition results of the 5 lines, and the response time of the electronic control device will be correspondingly increased to 1.5ms.

[0045] The iron ball recovery device is matched and arranged on the side where the iron ball 7 is ejected, and it adopts a continuously rotating magnet wheel; in order to realize continuous operation, the ejected iron ball 7 needs to be recovered and reused, so after the iron ball 7 falls, the iron ball can be adsorbed by the rotating magnet wheel and then reloaded into the iron ball installation position of the upper box body 13 of the box body 1.

[0046] The working principle of the present invention is:

[0047] After the X-ray scanning information is transmitted to the electronic control device, the electronic control device charges the coil 4 on the driving rod 3 at the corresponding position according to the coordinate information. The driving rod 3 with the coil 4 generates magnetism after the current is passed through, and an instant high-speed movement will be generated under the action of the electromagnet 2, so that the driving rod 3 extends and impacts the impact plate 5 at high speed. The impact plate 5 pushes multiple impact rods 6 at the same time, and then the multiple impact rods 6 push out multiple iron balls 7 at the same time, hitting the waste rock. The waste rock deviates from the original trajectory and falls into the external waste rock collection device; the high-grade ore that is not hit by the iron ball 7 still falls into the external concentrate collection device according to the original trajectory, thereby realizing the separation of concentrate and waste rock, and all the ejected iron balls 7 are recovered by the iron ball recovery device for recycling.

[0048] Among them, the present invention can arrange three sets of jet sorting devices of the present invention at different heights, and the three sets of jet sorting devices point to the same position of the ore falling trajectory. When the ore runs to this position, a high-speed impact rod 6 is used to push 0.5mm iron beads 7 to shoot at the falling materials, which can realize the function of sorting materials with a diameter of 1mm. An iron bead recovery device is arranged at the same elevation of the concentrate trough and the tailings trough for recovering iron beads with a diameter of 0.5mm.

[0049] The iron bead jetting sorting method of the present invention can improve the tailing accuracy of the photoelectric sorting equipment. Based on the above-mentioned iron bead jetting sorting device that can improve the tailing accuracy of the photoelectric sorting equipment, the method comprises the following steps:

[0050] S100, the signal of waste rock determined by X-ray detection is transmitted to the electronic control device, and the electronic control device charges the coil 4 on the driving rod 3 at the corresponding position according to the coordinate information, and simultaneously supplies power to the electromagnet 2 in the same direction as the coil 4;

[0051] S200, after receiving the ejection signal, the driving rod 3 is energized and extended, and then moves at high speed under the electromagnetic repulsive force generated by the driving rod 3 and the electromagnet 2;

[0052] S300, the driving rod 3 moves at high speed and impacts the impact plate 5 at high speed, and the impact plate 5 transfers energy to the corresponding impact rod 6 above it;

[0053] S400, the impact rod 6 pushes the corresponding iron ball 7 above it to hit the waste rock, and the waste rock deviates from the original trajectory and falls into the waste rock collection device, and the ore that is not hit by the iron ball 7 still falls into the concentrate collection device according to the original trajectory, thereby achieving separation of concentrate and waste rock;

[0054] S500, all the iron beads 7 are recovered by the iron bead recovery device and reinstalled into the iron bead installation position on the top of the upper box body 13 for recycling.

[0055] The present invention has the outstanding advantages of fast response time, high precision, no tail gas, etc., and can realize the continuous production of physical sorting of small-size waste rock.

[0056] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An iron bead jetting sorting device capable of improving the tailing accuracy of photoelectric sorting equipment, characterized in that: The iron bead jet separation device comprises a housing (1), an electromagnet (2), a driving rod (3), a coil (4), an impact plate (5), an impact rod (6) and iron beads (7); The box (1) has an accommodating space inside and an electric control device is matched and arranged on the outside; The electromagnet (2) is matched and arranged on the inner side of the lower part of the box (1) and is electrically connected to the electric control device; The driving rod (3) is matched and vertically mounted on the inner side of the middle section of the box body (1), and is located directly above the electromagnet (2) and corresponds one-to-one with it; The coil (4) is evenly wound around the outside of the driving rod (3) and is electrically connected to the electric control device; The impact plate (5) is matched and mounted on the inner side of the upper part of the box body (1), and is located directly above the driving rod (3) and corresponds one-to-one with it; The impact rod (6) is also matched and vertically mounted on the inner side of the upper part of the box body (1), and is located directly above the impact plate (5) and corresponds one-to-one with it; The iron bead (7) is matched and movably embedded in the top of the box body (1), and is located directly above the impact rod (6) and corresponds one-to-one with it; After the electromagnet (2) and the coil (4) wound around the outside of the driving rod (3) are supplied with power in the same direction by the electric control device, a repulsive force is generated between the driving rod (3) and the electromagnet (2), and the driving rod (3) is driven by the repulsive force to impact the impact plate (5) upward at a high speed, so that the impact plate (5) flies upward at a high speed and impacts the impact rod (6), and then the impact rod (6) impacts the corresponding iron ball (7) above it upward at a high speed, and finally the iron ball (7) is ejected and flies out at a high speed to hit the waste rock.

2. The iron bead jetting separation device capable of improving the tailing accuracy of the photoelectric separation equipment as claimed in claim 1, characterized in that: The box body (1) is composed of a lower box body (11), a middle box body (12) and an upper box body (13) stacked from bottom to top; The top of the lower box (11) is evenly and evenly provided with electromagnet installation grooves (111), and the upper circumferential edge thereof is matched with a lower box installation step (112); The middle box (12) is mounted on the upper part of the lower box (11), and its bottom is evenly protruded downward along the circumferential edge to form a middle box mounting wall (121), and its top is matched along the circumferential edge to open a middle box mounting step (122); the area of ​​the middle box (12) located inside the middle box mounting wall (121) is matched and penetrated along the vertical direction to open a drive rod mounting through hole (123) that matches the electromagnet mounting groove (111); the middle box (12) is matched and connected with the lower box mounting step (112) of the lower box (11) through the middle box mounting wall (121); The upper box body (13) is matched and installed on the upper part of the middle box body (12), and its bottom is uniformly protruding downward along the circumferential edge to form an upper box body installation wall (130) and is matched and connected with the middle box body installation step (122) of the middle box body (12) through the upper box body installation wall (130); the upper box body (13) is evenly opened from the top along the vertical direction to match with the impact rod installation groove (131) and corresponding to the drive rod installation through hole (123), and a strike plate installation groove (132) is matched from the center of the groove bottom of the impact rod installation groove (131) along the vertical direction, and a drive rod through hole (133) is matched and opened from the center of the groove bottom of the impact plate installation groove (132) along the vertical direction; the impact rod installation groove (131) is matched with an iron bead installation position for movably embedding the iron bead (7) along the inner edge of its upper end groove.

3. The iron bead jetting separation device capable of improving the tailing accuracy of the photoelectric separation equipment as claimed in claim 2, characterized in that: The electromagnet (2) is matched and embedded in the electromagnet installation groove (111).

4. The iron bead jetting separation device capable of improving the tailing accuracy of the photoelectric separation equipment as claimed in claim 2, characterized in that: The driving rod (3) passes through the driving rod mounting through hole (123) from bottom to top, and its upper end extends toward the top of the middle box body (12) and is limited to the top surface of the middle box body (12) by a driving rod limiting block (31) protruding from the outer wall of its upper end, and its lower end extends toward the bottom of the middle box body (12); the upper end of the driving rod (3) can movably pass through the driving rod through hole (133); the coil (4) is evenly wound around the outside of the driving rod (3) located in the driving rod mounting through hole (123), and the driving rod (3) and the coil (4) as a whole can movably shuttle in the driving rod mounting through hole (123).

5. The iron bead jetting separation device capable of improving the tailing accuracy of the photoelectric separation equipment as claimed in claim 2, characterized in that: The impact plate (5) is matched and embedded in the impact plate installation groove (132).

6. The iron bead jetting separation device capable of improving the tailing accuracy of the photoelectric separation equipment as claimed in claim 2, characterized in that: The impact rod (6) is matched and inserted into the impact rod installation groove (131) from top to bottom, and its lower end extends into the impact plate installation groove (132) and is limited at the inner groove bottom of the impact rod installation groove (131) by an impact rod limiting block (61) protruding from the outer wall of its lower end.

7. The iron bead jetting separation device capable of improving the tailing accuracy of the photoelectric separation equipment as claimed in claim 1, characterized in that: The iron beads (7) and the impact rods (6) thereunder are arranged in a 5*5 square arrangement.

8. The iron bead jetting separation device capable of improving the tailing accuracy of photoelectric separation equipment as claimed in claim 1, characterized in that: The iron bead jet separation device further comprises an iron bead recovery device; the iron bead recovery device is matched and arranged on the side where the iron bead (7) is ejected, and is used to recover the ejected iron bead (7).

9. An iron bead jetting sorting method capable of improving the tail-dropping accuracy of photoelectric sorting equipment, based on the iron bead jetting sorting device capable of improving the tail-dropping accuracy of photoelectric sorting equipment as described in any one of claims 2 to 6; characterized in that: The main steps include: 1) The signal of waste rock determined by X-ray detection is transmitted to the electronic control device, and the electronic control device charges the coil (4) on the driving rod (3) at the corresponding position according to the coordinate information, and simultaneously supplies power to the electromagnet (2) in the same direction as the coil (4); 2) After the driving rod (3) is energized and extended, it moves at high speed under the action of the electromagnetic repulsive force generated by the electromagnet (2) below it; 3) The high-speed moving driving rod (3) impacts the impact plate (5) above it at high speed, and the impact plate (5) transfers energy to the corresponding impact rod (6) above it; 4) The impact rod (6) pushes the corresponding iron ball (7) above it to hit the waste rock, and the waste rock deviates from the original trajectory and falls into the waste rock collection device of the external device, while the ore that is not hit by the iron ball (7) still falls into the concentrate collection device of the external device according to the original trajectory, thereby achieving the separation of concentrate and waste rock; 5) Finally, all ejected iron beads (7) are recovered by the iron bead recovery device and reinstalled into the iron bead installation position at the top of the upper box (13) for next use.

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