A method and apparatus for increasing the yield of coking fine coal washing

Abstract

The application provides a method and device for increasing the yield of coking clean coal washing and belongs to the field of coal processing, which comprises a device main body, the device main body is composed of a scraping layer, a material uniformizing layer, a magnetic separation layer and a sedimentation layer; the magnetic separation layer comprises a magnetic separation frame, a magnetic plate, a hole, an upper moving mechanism, an upper scraper, a lower moving mechanism, a lower scraper, a horizontal moving mechanism, a trapezoidal plate, a chute, a spring, a sliding plate, a push block, a wear-resistant column, a collection shell, a water permeable plate, a shell, a bidirectional telescopic rod, a baffle, a leakage prevention plate, an air blower and an inflation pipe. The method is used for controlling the cooperative work among the upper moving mechanism, the lower moving mechanism and the horizontal moving mechanism, when coal is washed, the upper scraper operates to scrape off the magnetic impurities pushed out of the hole by the push block, the remaining holes in the row can normally circulate the suspension, and the separation effect and the yield of the coal are effectively improved.

Description

Technical Field

[0001] This invention belongs to the field of coal processing, specifically a method and apparatus for increasing the yield of coking coal washing and beneficiation. Background Technology

[0002] Coal is the most important solid fuel and a type of combustible organic rock. It is formed from abundant vegetation that grew over a specific geological era, gradually accumulating into thick layers in suitable geological environments, and then being buried underwater or in silt. Through a long geological process of natural coalification, the raw coal mined from coal mines undergoes a series of processing methods to meet the quality requirements of different applications. Among these processes, coking coal washing is a crucial step in coal processing. It primarily uses physical methods to wash and remove impurities and ash from the raw coal, thereby obtaining high-quality coking coal.

[0003] In the coal washing process, if impurities such as rocks, soil, and ferrites are present in the coal, they may contain magnetic substances. Magnetic separation equipment can separate most of these magnetic substances. However, due to the diversity of magnetic substances in coal and their varying magnetic strengths, some weakly magnetic impurities may be missed or remain in the coal, preventing the complete separation of all magnetic substances. Alternatively, magnetic impurities may be encapsulated by other non-magnetic impurities, making them difficult to separate by the magnetic separation equipment and affecting the yield of coking coal washing. Therefore, we propose a method and apparatus to increase the yield of coking coal washing to address the aforementioned problems. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a method and apparatus for increasing the yield of coking coal washing, thereby solving the problems mentioned in the background art, such as the inability to completely separate all magnetic materials, or the possibility that magnetic impurities in coal may be encapsulated by other non-magnetic impurities, making them difficult to separate by magnetic separation equipment and affecting the yield of coking coal washing.

[0005] The objective of this invention can be achieved through the following technical solution: it includes a device body, which is composed of a scraping layer, a uniform layer, a magnetic separation layer, and a settling layer;

[0006] The scraping layer includes a top plate and a foam scraping mechanism; the bottom of the top plate is provided with the foam scraping mechanism, and the top plate is fixedly installed on the top of the uniform material layer;

[0007] The magnetic separation layer includes a magnetic separation frame, magnetic plate, holes, upper moving mechanism, upper scraper, lower moving mechanism, lower scraper, horizontal moving mechanism, trapezoidal plate, chute, spring, slide plate, push block, wear-resistant column, collection shell, permeable plate, extraction shell, bidirectional telescopic rod, baffle, leak-proof plate, blower, and inflation pipe. Collection shells are fixedly connected to both sides of the inner wall of the magnetic separation frame. A permeable plate is installed on the top of the collection shell. An extraction shell is inserted into the collection shell. Symmetrical openings are provided on one side of the collection shell, and leak-proof plates are elastically connected to the openings via torsion springs. A bidirectional telescopic rod is fixedly connected to the inner wall of the collection shell, and both movable ends of the bidirectional telescopic rod are fixedly connected to… A baffle is provided, and a magnetic separation plate is fixedly connected between the two collecting shells. The magnetic separation plate has holes, and a sliding groove is provided on the inner wall of the magnetic separation frame. A spring is fixedly connected to the inner wall of the sliding groove, and a sliding plate is fixedly connected to one end of the spring. A push block is fixedly connected to the surface of the sliding plate, and a wear-resistant column is provided on the sliding plate. A horizontal moving mechanism is fixedly connected to the inner wall of the magnetic separation frame, and a trapezoidal plate is provided on the horizontal moving mechanism. The trapezoidal plate is used in conjunction with the wear-resistant column. An upper moving mechanism and a lower moving mechanism are fixedly connected to the inner wall of the magnetic separation frame respectively. An upper scraper is provided on the upper moving mechanism, and a lower scraper is provided on the lower moving mechanism.

[0008] In a preferred embodiment of the present invention, the uniform material layer includes a uniform material frame, a feeding hopper, a liquid inlet pipe, a collection frame, a foam outlet pipe, and a uniform material roller assembly.

[0009] A feeding hopper is fixedly connected to one side of the top of the material leveling frame, a liquid inlet pipe is fixedly connected to one side of the material leveling frame, a collecting frame is fixedly connected to one side of the material leveling frame, a foam outlet pipe is fixedly connected to one side of the collecting frame, and a material leveling roller assembly is provided on the collecting frame.

[0010] In a preferred embodiment of the present invention, an air blower is fixedly connected to the outer wall of the magnetic separator, and an air inlet pipe is fixedly connected to the inner wall of the magnetic separator. The interface end of the air inlet pipe is connected to the air supply end of the air blower.

[0011] In a preferred embodiment of the present invention, the bottom of both sides of the lower scraper is elastically connected to a discharge plate by a torsion spring, and the inner wall of the collection shell is fixedly connected to an arc-shaped plate that cooperates with the discharge plate.

[0012] In a preferred embodiment of the present invention, the settling layer includes a settling hopper, a turning mechanism, a discharge pipe, a spiral discharge mechanism, and a solenoid valve;

[0013] The settling hopper is fixedly connected to the bottom of the magnetic separation layer. A material turning mechanism is provided on the settling hopper. A discharge pipe is fixedly connected to the bottom of the settling hopper. A solenoid valve is provided between the discharge pipe and the settling hopper. A spiral discharge mechanism is provided on the discharge pipe.

[0014] This invention also includes a method for increasing the yield of coking coal washing, the specific steps of which are as follows:

[0015] S1: Coal particles are fed into the feed hopper, and then a suspension is introduced into the uniform material layer inside the main body of the device through the liquid inlet pipe. The coal particles are uniformly dispersed by the operation of two sets of uniform material roller assemblies.

[0016] S2: After the coal particles enter the uniform material layer, the foam removal mechanism on the top plate operates to transport the upper layer of clean coal foam in the suspension and scrape the upper layer of flotation clean coal foam into the collection frame.

[0017] S3: When washing coal particles in the main body of the device, the air blower is controlled to inflate the air pipe at specified time intervals. Small bubbles are continuously generated at the air outlet on the air pipe. The small bubbles cause the suspension to surge upward, which in turn causes the clean coal after coal particle separation to float to the upper layer of the suspension. The foam removal mechanism collects the foam of the clean coal.

[0018] S4: When coal particles pass through the magnetic plate, magnetic impurities in the coal particles are attracted to the magnetic plate. The upper moving mechanism, the lower moving mechanism and the horizontal moving mechanism work together to scrape the magnetic impurities on the magnetic plate into the collection shell for collection.

[0019] S5: When the coal particles fall into the settling layer, the turning mechanism turns the coal particles, separating the clean coal mixed in with the coal particles. Under the action of small air bubbles, the clean coal floats to the surface. Finally, the coal slime and gangue generated after the coal particles are separated are discharged from the discharge pipe through the spiral discharge mechanism.

[0020] In a preferred embodiment of the present invention, the specific steps for the cooperative operation of the upper moving mechanism, the lower moving mechanism, and the horizontal moving mechanism are as follows:

[0021] S41: First, the lower moving mechanism performs a reciprocating movement operation, which drives the lower scraper to move forward and scrape off the magnetic impurities adsorbed on the lower surface of the magnetic plate. The scraped-off magnetic impurities fall onto the discharge plate and are sent into the collection shell for collection. Then, the lower moving mechanism is operated to drive the lower scraper to move in the reverse direction, and the subsequent process is as described above.

[0022] S42: When the lower scraper moves forward or backward, after the lower scraper passes through the first row of holes, the horizontal moving mechanism is activated, causing the trapezoidal plate to move in the same direction as the lower scraper; so that its inclined side contacts the wear-resistant column, causing the sliding plate to move, and the sliding plate causes the push block to rise and push out the magnetic impurities attached to the holes; when the wear-resistant column is at the top of the trapezoidal plate, the top surface of the push block is flush with the upper surface of the magnetic plate.

[0023] S43: When the horizontal moving mechanism is in operation, the upper moving mechanism is operated synchronously, so that the upper scraper moves horizontally to scrape the surface of the magnetic plate; at the same time, when the wear-resistant column is at the top of the trapezoidal plate, the upper scraper scrapes off the magnetic impurities pushed out by the pusher block and sends the magnetic impurities into the collection shell for collection.

[0024] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0025] 1. The present invention is configured to control the coordinated operation of the upper moving mechanism, the lower moving mechanism, and the horizontal moving mechanism. When washing coal, the operation of the upper scraper will scrape off the magnetic impurities pushed out of the hole by the pusher block, and the suspension can flow normally through the holes in the other positions, which effectively improves the coal sorting effect and yield.

[0026] 2. This invention can remove magnetic impurities from coal during the coal washing process, improve the yield of coking coal, obtain high-quality coking coal, reduce coal waste and environmental pollution, and ensure coal quality and economic benefits. Attached Figure Description

[0027] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0028] Figure 1 This is a schematic diagram of the overall structure of a device for increasing the yield of coking coal washing according to the present invention.

[0029] Figure 2 This is a schematic diagram of the other side of the overall structure of the device for increasing the yield of coking coal washing according to the present invention.

[0030] Figure 3 This is a cross-sectional view of the overall structure of the device for increasing the yield of coking coal washing according to the present invention.

[0031] Figure 4 This is a structural diagram of the magnetic separation layer of an apparatus for increasing the yield of coking coal washing according to the present invention;

[0032] Figure 5 This is a bottom view of the magnetic separation layer of a device for increasing the yield of coking coal washing according to the present invention.

[0033] Figure 6 This is a partial structural diagram of the magnetic separation layer of an apparatus for increasing the yield of coking coal washing according to the present invention;

[0034] Figure 7 This is a partial cross-sectional view of the magnetic separation layer of an apparatus for increasing the yield of coking coal washing according to the present invention;

[0035] Figure 8 for Figure 7 Enlarged view of part A in the image;

[0036] In the diagram: 1. Main body of the device; 100. Scraping layer; 101. Homogenizing layer; 102. Magnetic separation layer; 103. Settling layer; 2. Top plate; 3. Foam removal mechanism; 4. Collection frame; 5. Foam outlet pipe; 6. Feed hopper; 7. Liquid inlet pipe; 8. Magnetic plate; 9. Hole; 10. Homogenizing roller assembly; 11. Upper moving mechanism; 12. Upper scraper; 13. Lower moving mechanism; 14. Lower scraper; 15. Slide chute; 16. 17. Spring; 18. Slide plate; 19. Wear-resistant column; 20. Horizontal moving mechanism; 21. Trapezoidal plate; 22. Collection shell; 23. Shell extraction; 24. Bidirectional telescopic rod; 25. Baffle; 26. Water-permeable plate; 27. Leak-proof plate; 28. Arc-shaped plate; 29. ​​Discharge plate; 30. Push block; 31. Air blower; 32. Air inflator; 33. Turning mechanism; 34. Discharge pipe; 35. Spiral discharge mechanism; 36. Solenoid valve. Detailed Implementation

[0037] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] Please see Figures 1-8 As shown, a method and apparatus for increasing the yield of coking coal washing includes a main body 1, which is composed of a scraping layer 100, a uniform layer 101, a magnetic separation layer 102 and a settling layer 103.

[0039] The scraping layer 100 includes a top plate 2 and a foam scraping mechanism 3; the bottom of the top plate 2 is provided with the foam scraping mechanism 3, and the top plate 2 is fixedly installed on the top of the uniform layer 101.

[0040] The magnetic separation layer 102 includes a magnetic separation frame, a magnetic plate 8, holes 9, an upper moving mechanism 11, an upper scraper 12, a lower moving mechanism 13, a lower scraper 14, a horizontal moving mechanism 19, a trapezoidal plate 20, a chute 15, a spring 16, a sliding plate 17, a pusher 29, a wear-resistant column 18, a collection shell 21, a permeable plate 25, a drawer 22, a bidirectional telescopic rod 23, a baffle 24, a leak-proof plate 26, an air blower 30, and an air inlet pipe 31. Collection shells 21 are fixedly connected to both sides of the inner wall of the magnetic separation frame. A permeable plate 25 is provided on the top of the collection shell 21. A drawer 22 is inserted inside the collection shell 21. A symmetrical opening is provided on one side of the collection shell 21, and a leak-proof plate 26 is elastically connected to the opening via a torsion spring. A bidirectional telescopic rod 23 is fixedly connected to the inner wall of the collection shell 21. Both movable ends of the rod 23 are fixedly connected to baffles 24. A magnetic separation plate 8 is fixedly connected between the two collection shells 21. Holes 9 are opened on the magnetic separation plate 8. A sliding groove 15 is opened on the inner wall of the magnetic separation frame. A spring 16 is fixedly connected to the inner wall of the sliding groove 15. A slide plate 17 is fixedly connected to one end of the spring 16. A push block 29 is fixedly connected to the surface of the slide plate 17. A wear-resistant column 18 is provided on the slide plate 17. A horizontal moving mechanism 19 is fixedly connected to the inner wall of the magnetic separation frame. A trapezoidal plate 20 is provided on the horizontal moving mechanism 19. The trapezoidal plate 20 is used in conjunction with the wear-resistant column 17. An upper moving mechanism 11 and a lower moving mechanism 13 are fixedly connected to the inner wall of the magnetic separation frame respectively. An upper scraper 12 is provided on the upper moving mechanism 11, and a lower scraper 14 is provided on the lower moving mechanism 13.

[0041] It should be noted that the hole 9 is used in conjunction with the push block 29, and the shape of the hole 9 and the push block 29 can be circular, rectangular, etc., and is not limited to these. Other similar shapes can also be used in this case.

[0042] In this application, the uniform material layer 101 includes a uniform material frame, a feed hopper 6, a liquid inlet pipe 7, a collection frame 4, a foam outlet pipe 5, and a uniform material roller assembly 10.

[0043] A feeding hopper 6 is fixedly connected to one side of the top of the material leveling frame, a liquid inlet pipe 7 is fixedly connected to one side of the material leveling frame, a collecting frame 4 is fixedly connected to one side of the material leveling frame, a foam outlet pipe 5 is fixedly connected to one side of the collecting frame 4, and a material leveling roller assembly 10 is provided on the collecting frame 4.

[0044] In this application, an air blower 30 is fixedly connected to the outer wall of the magnetic separator, and an air filling pipe 31 is fixedly connected to the inner wall of the magnetic separator. The interface end of the air filling pipe 31 is connected to the air supply end of the air blower 30.

[0045] It should be noted that the air outlet of the air tube 31 is equipped with an anti-clogging mechanism to prevent the air outlet from being blocked and to ensure the normal generation of bubbles; the anti-clogging mechanism is a conventional technology and will not be described in detail here.

[0046] The bottom of both sides of the lower scraper 14 is elastically connected to the discharge plate 28 by a torsion spring, and the inner wall of the collection shell 21 is fixedly connected to the arc plate 27 that works in conjunction with the discharge plate 28.

[0047] In this application, the settling layer 103 includes a settling hopper, a turning mechanism 32, a discharge pipe 33, a spiral discharge mechanism 34, and a solenoid valve 35;

[0048] The settling hopper is fixedly connected to the bottom of the magnetic separation layer. A turning mechanism 32 is provided on the settling hopper. A discharge pipe 33 is fixedly connected to the bottom of the settling hopper. A solenoid valve 35 is provided between the discharge pipe 33 and the settling hopper. A spiral discharge mechanism 34 is provided on the discharge pipe 33.

[0049] It should be noted that when it is necessary to unload the gangue and coal slurry in the settling hopper, the solenoid valve 35 is controlled to allow the gangue and coal slurry to enter the discharge pipe 33, and the screw discharge mechanism 34 accelerates the unloading.

[0050] This invention also includes a method for increasing the yield of coking coal washing, the specific steps of which are as follows:

[0051] S1: Coal particles are fed into the feed hopper 6, and then a suspension is introduced into the uniform material layer 101 inside the main body of the device 1 through the liquid inlet pipe 6. The coal particles are uniformly dispersed by the operation of two sets of uniform material roller assemblies 10.

[0052] S2: After the coal particles enter the uniform material layer 101, the foam removal mechanism 3 on the top plate 2 operates to transport the upper layer of clean coal foam in the suspension and scrape the upper layer of flotation clean coal foam into the collection frame 4.

[0053] S3: When washing and selecting coal particles in the main body 1 of the device, the blower 30 is controlled to inflate the air pipe 31 at specified time intervals. Small bubbles are continuously generated at the air outlet on the air pipe 31, which causes the small bubbles to carry the suspension upward, and the clean coal after coal particle separation floats to the upper layer of the suspension. The foam removal mechanism 3 collects the foam of the clean coal.

[0054] S4: When the coal particles pass through the magnetic plate 8, the magnetic impurities in the coal particles are magnetically attracted to the magnetic plate 8, and the upper moving mechanism 11, the lower moving mechanism 13 and the horizontal moving mechanism 19 work together to scrape the magnetic impurities on the magnetic plate 8 into the collection shell 21 for collection.

[0055] It should be noted that when the magnetic plate 8 scrapes the magnetic impurities into the collection shell 21, the suspension entering the collection shell 21 permeates through the permeable plate 25. When it is necessary to treat the magnetic impurities in the collection shell 21, the bidirectional telescopic rod 23 is activated, causing its two movable ends to move the baffle 24, so that the baffle 24 blocks the leak-proof plate 26, blocking the gap between the opening and the leak-proof plate 26, and the shell 22 can be pulled out to treat the internal magnetic impurities.

[0056] S5: When the coal particles fall into the settling layer 103, the coal particles are turned upward by the operation of the turning mechanism 32, which loosens the coal particles and allows the magnetic impurities that were missed to be separated by the magnetic plate 8. The clean coal mixed in the coal particles is separated and floated to the surface by the action of small air bubbles. Finally, the coal slurry and gangue generated after the coal particles are sorted are discharged from the discharge pipe 33 by the spiral discharge mechanism 34.

[0057] It should be noted that when the turning mechanism 32 turns the coal particles, the small air bubbles that emerge from the air pipe 31 will impact the turned coal particles upward, disperse the loose coal particles, and the small air bubbles will float the fine coal in the coal particles to the upper layer of the suspension. The magnetic impurities of the dispersed coal particles are adsorbed by the magnetic plate 8 and the corresponding mechanism will process the magnetic impurities.

[0058] In this application, the specific steps of the cooperative operation of the upper moving mechanism 11, the lower moving mechanism 13, and the horizontal moving mechanism 19 are as follows:

[0059] S41: First, the lower moving mechanism 13 performs a reciprocating movement operation, which drives the lower scraper 14 to move forward and scrape off the magnetic impurities adsorbed on the lower surface of the magnetic plate 8. The scraped-off magnetic impurities fall onto the discharge plate 28 and are sent into the collection shell 21 for collection. Then, the lower moving mechanism 13 is operated to drive the lower scraper 14 to move in the reverse direction, and the subsequent process is as above.

[0060] It should be noted that when the lower scraper 14 moves, it contacts the leak-proof plate 26 and flips it over, so that the discharge plate 28 enters the collection shell 21 and contacts the arc plate 27, causing it to flip over, so that the magnetic impurities on the discharge plate 28 fall into the collection shell 21.

[0061] S42: When the lower scraper 14 moves forward or backward, after the lower scraper 14 passes through the first row of holes 9, the horizontal moving mechanism 19 is activated, causing the trapezoidal plate 20 to move in the same direction as the lower scraper 14; so that its inclined side abuts against the wear-resistant column 18, causing the sliding plate 17 to move, causing the sliding plate 17 to drive the push block 29 to rise and push out the magnetic impurities attached to the holes 9; when the wear-resistant column 18 is at the top of the trapezoidal plate 20, the top surface of the push block 29 is flush with the upper surface of the magnetic plate 8.

[0062] It should be noted that, each time the lower scraper 14 passes through the first row of holes 9, another alternative method for the horizontal moving mechanism 19 to operate is to delay the operation of the horizontal moving mechanism 19 when the lower moving mechanism 13 is operating; however, the alternative method is not limited to this, and other methods that can achieve the function of delaying the operation of the horizontal moving mechanism 19 after the lower moving mechanism 13 can also be used in this case.

[0063] S43: When the horizontal moving mechanism 19 is operating, the upper moving mechanism 11 is operated synchronously, so that the upper scraper 12 moves horizontally to scrape the surface of the magnetic plate 8; at the same time, when the wear-resistant column 18 is at the top of the trapezoidal plate 20, the upper scraper 12 scrapes off the magnetic impurities pushed out by the pusher 29 and sends the magnetic impurities into the collection shell 21 for collection.

[0064] It should be noted that when the upper scraper 12 moves, it contacts the leak-proof plate 26 and causes it to flip, sending the magnetic impurities into the collection shell 21. The upper moving mechanism 11, the lower moving mechanism 13, and the horizontal moving mechanism 19 are all provided with a starting position and an ending position. The process of moving from the starting position to the ending position is marked as forward movement, and vice versa. When the above mechanisms operate to the ending position, they are controlled to move in the reverse direction, and vice versa, thereby realizing reciprocating movement to send the magnetic impurities into the collection shell 21. Among them, the upper moving mechanism 11, the lower moving mechanism 13, and the horizontal moving mechanism 19 drive the upper scraper 12, the lower scraper 14, and the trapezoidal plate 20 to move at a consistent speed.

[0065] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. An apparatus for increasing the yield of coking coal washing, characterized in that, The device includes a main body (1), which is composed of a scraping layer (100), a uniform layer (101), a magnetic separation layer (102), and a settling layer (103); The scraping layer (100) includes a top plate (2) and a foam scraping mechanism (3); the bottom of the top plate (2) is provided with the foam scraping mechanism (3), and the top plate (2) is fixedly installed on the top of the uniform layer (101); The magnetic separation layer (102) includes a magnetic separation frame, a magnetic plate (8), holes (9), an upper moving mechanism (11), an upper scraper (12), a lower moving mechanism (13), a lower scraper (14), a horizontal moving mechanism (19), a trapezoidal plate (20), a chute (15), a spring (16), a sliding plate (17), a pusher (29), a wear-resistant column (18), a collection shell (21), a permeable plate (25), a shell extraction mechanism (22), a bidirectional telescopic rod (23), a baffle (24), and a leak-proof structure. Plate (26), blower (30), inflation pipe (31); a collection shell (21) is fixedly connected to both sides of the inner wall of the magnetic separator, a water-permeable plate (25) is provided on the top of the collection shell (21), a drawer (22) is inserted into the collection shell (21), a through-hole is symmetrically opened on one side of the collection shell (21), a leak-proof plate (26) is elastically connected to the through-hole by a torsion spring, and a bidirectional telescopic rod (23) is fixedly connected to the inner wall of the collection shell (21). Both movable ends of the retractable rod (23) are fixedly connected to baffles (24). A magnetic plate (8) is fixedly connected between the two collecting shells (21). Holes (9) are provided on the magnetic plate (8). A sliding groove (15) is provided on the inner wall of the magnetic selection frame. A spring (16) is fixedly connected to the inner wall of the sliding groove (15). A sliding plate (17) is fixedly connected to one end of the spring (16). A pusher (29) is fixedly connected to the surface of the sliding plate (17). The magnetic separator is provided with a wear-resistant column (18), and a horizontal moving mechanism (19) is fixedly connected to the inner wall of the magnetic separator. A trapezoidal plate (20) is provided on the horizontal moving mechanism (19). The trapezoidal plate (20) is used in conjunction with the wear-resistant column (18). An upper moving mechanism (11) and a lower moving mechanism (13) are fixedly connected to the inner wall of the magnetic separator. An upper scraper (12) is provided on the upper moving mechanism (11), and a lower scraper (14) is provided on the lower moving mechanism (13). The bottom of both sides of the lower scraper (14) is elastically connected to the discharge plate (28) by a torsion spring, and the inner wall of the collection shell (21) is fixedly connected to the arc plate (27) that works with the discharge plate (28).

2. The apparatus for increasing the yield of coking coal washing according to claim 1, characterized in that, The uniform material layer (101) includes a uniform material frame, a feed hopper (6), a liquid inlet pipe (7), a collection frame (4), a foam outlet pipe (5), and a uniform material roller assembly (10). A feeding hopper (6) is fixedly connected to one side of the top of the uniform material frame, a liquid inlet pipe (7) is fixedly connected to one side of the uniform material frame, a collection frame (4) is fixedly connected to one side of the uniform material frame, a foam outlet pipe (5) is fixedly connected to one side of the collection frame (4), and a uniform material roller assembly (10) is provided on the collection frame (4).

3. The apparatus for increasing the yield of coking coal washing according to claim 2, characterized in that, An air blower (30) is fixedly connected to the outer wall of the magnetic separator, and an air inlet pipe (31) is fixedly connected to the inner wall of the magnetic separator. The interface end of the air inlet pipe (31) is connected to the air supply end of the air blower (30).

4. The apparatus for increasing the yield of coking coal washing according to claim 3, characterized in that, The settling layer (103) includes a settling hopper, a turning mechanism (32), a discharge pipe (33), a spiral discharge mechanism (34), and a solenoid valve (35). The settling hopper is fixedly connected to the bottom of the magnetic separation layer. A turning mechanism (32) is provided on the settling hopper. A discharge pipe (33) is fixedly connected to the bottom of the settling hopper. A solenoid valve (35) is provided between the discharge pipe (33) and the settling hopper. A spiral discharge mechanism (34) is provided on the discharge pipe (33).

5. The method of using the device for increasing the yield of coking coal washing according to claim 4, characterized in that, The specific steps are as follows: S1: Coal particles are fed into the feed hopper (6), and then the suspension is introduced into the uniform material layer (101) inside the main body of the device (1) through the liquid inlet pipe (7). The coal particles are uniformly dispersed by the operation of two sets of uniform material roller assemblies (10). S2: After the coal particles enter the uniform material layer (101), the foam removal mechanism (3) on the top plate (2) operates to transport the upper layer of clean coal foam in the suspension and scrape the upper layer of flotation clean coal foam into the collection frame (4). S3: When washing and selecting coal particles in the main body (1) of the device, the blower (30) is controlled to fill the air pipe (31) at a specified time interval. Small bubbles are continuously generated at the air outlet on the air pipe (31), which causes the small bubbles to carry the suspension upward and carry the clean coal after coal particle separation to float to the upper layer of the suspension. The foam removal mechanism (3) collects the foam of the clean coal. S4: When the coal particles pass through the magnetic plate (8), the magnetic impurities in the coal particles are magnetically attracted to the magnetic plate (8), and the upper moving mechanism (11), the lower moving mechanism (13) and the horizontal moving mechanism (19) work together to scrape the magnetic impurities on the magnetic plate (8) into the collection shell (21) for collection. S5: When the coal particles fall into the settling layer (103), the coal particles are turned over by the turning mechanism (32) to separate the clean coal mixed in the coal particles. The clean coal is floated up by the action of small bubbles. Finally, the coal slurry and gangue generated after the coal particles are sorted are discharged from the discharge pipe (33) by the spiral discharge mechanism (34).

6. The method of using the device for increasing the yield of coking coal washing according to claim 5, characterized in that, The specific steps for the coordinated operation of the upper moving mechanism (11), the lower moving mechanism (13), and the horizontal moving mechanism (19) are as follows: S41: First, the lower moving mechanism (13) performs a reciprocating movement operation, causing the lower moving mechanism (13) to drive the lower scraper (14) to move forward, scraping off the magnetic impurities adsorbed on the lower surface of the magnetic plate (8). The scraped-off magnetic impurities fall onto the discharge plate (28), and the magnetic impurities are sent into the collection shell (21) for collection. Then, the lower moving mechanism (13) is driven to move the lower scraper (14) in the reverse direction, and the above process is repeated. S42: When the lower scraper (14) moves forward or backward, whenever the lower scraper (14) passes through the first row of holes (9), the horizontal moving mechanism (19) is activated, causing the trapezoidal plate (20) to move in the same direction as the lower scraper (14); the inclined side of the trapezoidal plate (20) abuts against the wear-resistant column (18), causing the sliding plate (17) to move, causing the sliding plate (17) to drive the push block (29) to rise and push out the magnetic impurities attached to the holes (9); when the wear-resistant column (18) is at the top of the trapezoidal plate (20), the top surface of the push block (29) is flush with the upper surface of the magnetic plate (8); S43: When the horizontal moving mechanism (19) is in operation, the upper moving mechanism (11) is operated synchronously, so that the upper scraper (12) moves horizontally to scrape the surface of the magnetic plate (8); at the same time, when the wear-resistant column (18) is at the top of the trapezoidal plate (20), the upper scraper (12) scrapes off the magnetic impurities pushed out by the pusher (29) and sends the magnetic impurities into the collection shell (21) for collection.

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