A device and method for sorting and recycling valuable metals from slag of a waste incinerator

Abstract

The application relates to the technical field of solid waste treatment, in particular to a device and method for slag sorting and valuable metal recycling of a garbage incinerator, which aims at solving the problems of manual sorting, high labor intensity and low efficiency of slag sorting and valuable metal recycling, and provides the device for slag sorting and valuable metal recycling of the garbage incinerator, which comprises a sorting table, a movable conveying belt arranged on the sorting table, side plates arranged on both sides of the upper end of the sorting table, and flat material plates arranged in the inner sides of the two side plates and matched with the conveying belt; the sorting mechanism comprises a rotatable main shaft, a plurality of magnetic plates arranged on the outer surface of a collecting square roller, a pushing assembly matched with the magnetic plates and arranged on the upper end of the sorting table, and a scraper arranged at the lower end of the driving plate; when the main shaft rotates, the collecting square roller can rotate intermittently, and the driving plate can reciprocate left and right; when the driving plate reciprocates left and right, the scraper can be scraped to one side along the upper end surface of the magnetic plate; the device can automatically sort metal in the whole process, and the labor cost and safety risk are obviously reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of solid waste treatment, more particularly to the field of solid waste slag sorting for waste incinerators, and especially to a device and method for sorting and recycling valuable metals from waste incinerator slag. BACKGROUND

[0002] With the acceleration of urbanization and population growth, the production of household garbage continues to rise, and waste incineration, as an important method of reduction and resource utilization, is widely used. However, the incineration process produces a large amount of solid waste slag, accounting for about 15%-30% of the weight of the original garbage. These slag usually contain unburned organic matter, inorganic minerals, and metal substances with high recycling value, such as iron and a small amount of non-ferrous metals. In traditional subsequent treatment of slag, the sorting and recycling of metals mainly rely on manual sorting or simple primary mechanical screening (such as vibrating screen, drum screen). Manual sorting is inefficient, labor-intensive, and has a poor working environment (high temperature, dust, and potential harmful substances), and the sorting accuracy is unstable, resulting in a large amount of valuable metals not being effectively recycled and being buried with the residue, causing resource waste. Therefore, developing a sorting device that is efficient, automated, and can run continuously and stably, and significantly improves the recovery rate of valuable metals in slag, is of urgent need and great significance for realizing the resource utilization of waste incinerator slag, reducing processing costs, and reducing environmental pollution. SUMMARY

[0003] The present application provides a device and method for sorting and recycling valuable metals from waste incinerator slag, which can automatically sort metals throughout the process, significantly reducing labor costs and safety risks. It can more accurately and completely capture ferromagnetic metals in the slag, including small particles, significantly improving the overall recovery rate of valuable metals. The use of the device to sort metals further compresses time costs and improves efficiency, effectively solving the problems mentioned in the background.

[0004] To solve the above problems, the technical solution adopted by the present application is:

[0005] The utility model provides a kind of device of valuable metal's sorting and recycling of waste incinerator slag, including sorting table, the sorting table is equipped with movable conveying belt, both sides of sorting table upper end are equipped with side plate, two side plate insides are equipped with with conveying belt cooperation flat material board;Sorting table one side is further equipped with sorting mechanism, sorting mechanism includes rotatable main shaft, sorting mechanism further includes the collection square roller of setting in the conveying belt upper end, multiple magnetic plates are equipped on the outer surface of collection square roller, sorting table upper end is further equipped with with magnetic plate cooperation push assembly, push assembly includes driving plate, the lower end of driving plate is equipped with scraper, when main shaft rotates, it can make collection square roller intermittent rotation, driving plate reciprocating left and right movement, when driving plate reciprocating left and right movement, again can make scraper along the upper end surface of magnetic plate clear to one side.

[0006] Sorting table front and rear ends are equipped with rotatable friction roller, conveying belt is sleeved on the outer surface of two friction rollers, and sorting table one side is further equipped with hopper.

[0007] Sorting table one side is equipped with first motor, main shaft is fixedly connected at the output end of first motor, and the outer surface of main shaft is fixedly connected with the lever of poking, and the one side of collection square roller is coaxially fixedly connected with the notch wheel that is matched with the lever of poking.

[0008] The outer surface of main shaft is further fixedly connected with disc cam, and the upper end surface of side plate is fixedly connected with two side rods, and the inner wall of side rod is slidably connected with a rectangular cover, the driving plate is installed on the rectangular cover, the one side end face of rectangular cover is fixedly connected with L-shaped connecting rod, and the lower end of L-shaped connecting rod is provided with the first sliding pin matched with disc cam.

[0009] The driving plate is slidably connected in the inner wall of rectangular cover, the scraper is slidably connected in the lower end inner wall of driving plate, the guide plate is slidably connected in the middle inner wall of driving plate, the upper end inner wall of scraper is fixedly connected with short pin, the guide groove matched with short pin is formed in the inner wall of guide plate, and the first stop surface and the second stop surface matched with guide plate are respectively arranged in the left and right ends of rectangular cover.

[0010] The upper end of rectangular cover is provided with the I-beam fixedly connected with side rod, the inner wall of I-beam is slidably connected with telescopic rod, the upper end of I-beam is provided with long connecting rod, the prying lever capable of swinging is arranged on sorting table, one end of long connecting rod is hinged on telescopic rod, the other end of long connecting rod is hinged on prying lever, and the lower end of telescopic rod is fixedly connected on driving plate.

[0011] The outer surface of main shaft is further fixedly connected with long cam, the one side end face of sorting table is fixedly connected with U-shaped frame, the upper end of U-shaped frame is provided with extension plate, the inner wall of extension plate is slidably connected with first sliding block, the inner wall of first sliding block is fixedly connected with long pin matched with long cam, the upper end of long pin is provided with horizontal pin, the prying lever is hinged on the upper end of U-shaped frame, and the short key slot matched with horizontal pin is formed in the lower end of prying lever.

[0012] The outer surface of the telescopic rod is fixedly connected with a top plate at the upper end, the lower end of the top plate is provided with a material raking device, the upper end of the material raking device is coaxially fixedly connected with a crank, the inner wall of the top plate is provided with a movable second sliding block, the upper end of the top plate is provided with a short connecting rod, one end of the short connecting rod is hingedly connected to the crank, and the other end of the short connecting rod is hingedly connected to a square sliding block.

[0013] The upper end surface of the second sliding block is fixedly connected with a second sliding pin, the upper end of the sorting table is further provided with a track plate, and the inner wall of the track plate is provided with a wave groove matched with the second sliding pin.

[0014] A use method of a waste incinerator slag sorting and valuable metal recycling device, comprising the following steps:

[0015] S1, feeding and flattening: the incinerated slag is poured onto the conveying belt of the sorting table, the conveying belt moves to drive the slag to move, and the flat plate is used to flatten the slag transversely;

[0016] S2, magnetic metal: the conveying belt conveys the flattened slag to below the collecting square roller; the magnetic plate arranged on the outer surface of the collecting square roller is used to adsorb the ferromagnetic metal in the slag when rotating to the lower position;

[0017] S3, clear scraping and metal recycling: when the magnetic plate for adsorbing metal is intermittently rotated to the uppermost position with the collecting square roller, the driving plate drives the scraper to move, and the adsorbed metal is scraped to the designated recycling side;

[0018] S4, cycle operation: after the clear scraping, the main shaft continues to rotate to make the collecting square roller intermittently rotate by a specified angle again, so that the next magnetic plate moves to the lower position for adsorption.

[0019] Compared with the prior art, the present application has the following advantages:

[0020] In operation, when the slag moves to the lower end of the collecting roller, the magnetic plate attracts the metal within the slag. The metal is then fixed to the magnetic plate by this attraction. Once a specified amount of metal adheres to the magnetic plate, the main shaft rotates, causing the collecting roller to rotate intermittently. This allows the magnetic plate at the other end of the collecting roller to continue its magnetic attraction operation. When the magnetic plate rotates to directly above the collecting roller, the rotation of the main shaft causes the drive plate to move back and forth, allowing the corresponding scraper to scrape along the upper surface of the magnetic plate to one side. This pushes the metal adhered to the magnetic plate to a designated position, thus sorting the metal within the slag. The entire process is cyclical and requires no manual intervention. This device significantly improves sorting efficiency and processing capacity, enabling continuous, assembly-line slag processing. Compared to manual or simple mechanical sorting, the processing speed is increased several times, significantly shortening the sorting cycle and meeting [the requirements of the device]. Large-scale incineration plants have high demands for slag processing; automated systems greatly reduce manual intervention, requiring only a small number of personnel for monitoring and maintenance. This avoids the high-intensity, high-risk manual sorting work in harsh environments, significantly reducing labor costs and safety risks. The systems can more accurately and thoroughly capture ferromagnetic metals, including fine particles, in the slag, thus significantly improving the overall recovery rate of valuable metals. Simultaneously, automated processes reduce contamination, increasing the purity of recovered metals. Highly efficient recovered metals can be directly sold as renewable resources, bringing considerable economic benefits to waste incineration plants while reducing the consumption of primary mineral resources, aligning with the concept of a circular economy. After efficient metal recovery, the remaining slag has a significantly reduced metal content, making it more conducive to subsequent resource utilization or safe landfilling, reducing the burden on landfills and the potential risk of heavy metal leaching, and improving the resource utilization and harmlessness of the entire waste incineration process. Attached Figure Description

[0021] Figure 1 This is a three-dimensional model of a device for sorting and recovering valuable metals from waste incinerator slag according to the present invention.

[0022] Figure 2 This is an isometric view of an apparatus for sorting and recovering valuable metals from waste incinerator slag according to the present invention.

[0023] Figure 3 This is a schematic diagram of the hopper installation of a waste incinerator slag sorting and recycling device for valuable metals according to the present invention.

[0024] Figure 4 This is a schematic diagram of the installation of a flat plate in a waste incinerator slag sorting and recycling device according to the present invention.

[0025] Figure 5 This is a schematic diagram of the groove wheel installation of a device for sorting and recovering valuable metals from waste incinerator slag according to the present invention.

[0026] Figure 6 This is a schematic diagram of the installation of a disc cam in a waste incinerator slag sorting and recycling device according to the present invention.

[0027] Figure 7 This is a rectangular sectional view of a device for sorting and recovering valuable metals from waste incinerator slag according to the present invention.

[0028] Figure 8 This is a cross-sectional view of the drive plate of a device for sorting and recovering valuable metals from waste incinerator slag according to the present invention.

[0029] Figure 9 This is a schematic diagram of the pry bar installation of a device for sorting and recovering valuable metals from waste incinerator slag according to the present invention.

[0030] Figure 10 This is a schematic diagram of the long pin installation of a device for sorting and recovering valuable metals from waste incinerator slag according to the present invention.

[0031] Figure 11 This is a schematic diagram of the long connecting rod installation of a device for sorting and recovering valuable metals from waste incinerator slag according to the present invention.

[0032] Figure 12 This is a schematic diagram of the track plate installation of a device for sorting and recovering valuable metals from waste incinerator slag according to the present invention.

[0033] Figure 13 This is a schematic diagram of the installation of the second slider in a device for sorting and recovering valuable metals from waste incinerator slag according to the present invention.

[0034] Numbering in the diagram: 1-Sorting table, 2-Conveyor belt, 3-Side plate, 4-Flat plate, 5-Feeding hopper, 6-Friction roller, 7-First motor, 8-Pulley, 9-Gutter wheel, 10-Collecting square roller, 11-Magnetic plate, 12-Side rod, 13-Rectangular cover, 14-Drive plate, 15-Guide plate, 16-Short pin, 17-Shim, 18-Lower transverse groove, 19-First inclined groove, 20-Upper transverse groove, 21-First stop, 22-Second stop, 23-L-shaped connecting rod, 24-Circle 25-First sliding pin, 26-Scraper, 27-U-shaped frame, 28-Long cam, 29-Extension plate, 30-First slider, 31-Long pin, 32-Horizontal pin, 33-Pry bar, 34-Short keyway, 35-Long connecting rod, 36-Outer cylinder, 37-Inner rod, 38-I-beam plate, 39-Top plate, 40-Second slider, 41-Second sliding pin, 42-Short connecting rod, 43-Crank, 44-Discharging rake, 45-Trajectory plate, 46-Wave groove, 47-Main shaft. Detailed Implementation

[0035] The following are specific embodiments of the present invention, and the technical solutions of the present invention will be further described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0036] like Figures 1-12 As shown, the present invention provides a device for sorting and recovering valuable metals from waste incinerator slag, including a sorting table 1, on which a movable conveyor belt 2 is provided. Side plates 3 are provided on both sides of the upper end of the sorting table 1, and flat material plates 4 that cooperate with the conveyor belt 2 are provided on the inner side of the two side plates 3. A sorting mechanism is also provided on one side of the sorting table 1. The sorting mechanism includes a rotatable main shaft 47 and a collection square roller 10 disposed on the upper end of the conveyor belt 2. Multiple magnetic plates 11 are provided on the outer surface of the collection square roller 10. A pushing component that cooperates with the magnetic plates 11 is also provided on the upper end of the sorting table 1. The pushing component includes a drive plate 14. A scraper 26 is provided at the lower end of the drive plate 14. When the main shaft 47 rotates, the collection square roller 10 can rotate intermittently and the drive plate 14 can move back and forth left and right. When the drive plate 14 moves back and forth left and right, the scraper 26 can scrape along the upper surface of the magnetic plates 11 to one side.

[0037] like Figures 1-7As shown, the sorting table 1 supports the entire device. By pouring the incinerated slag onto the sorting table 1, i.e., the conveyor belt 2, the slag is driven to a designated position as the conveyor belt 2 moves. The side plates 3 prevent the slag from falling off the conveyor belt 2 and the sorting table 1. The leveling plate 4, as the slag moves on the conveyor belt 2, performs a lateral leveling operation on the slag, preventing unevenness and facilitating subsequent sorting by the magnetic plate 11. When the slag reaches the lower end of the collecting roller 10, the magnetic plate 11 allows the metal within the slag to be separated. Magnetic attraction causes metal to adhere to magnetic plate 11. Once a specified amount of metal adheres to magnetic plate 11, the main shaft 47 rotates, causing the collecting roller 10 to rotate intermittently. This means the magnetic plate 11 at the other end of the collecting roller 10 continues its magnetic attraction operation. When magnetic plate 11 rotates to directly above the collecting roller 10, the rotation of the main shaft 47 causes the drive plate 14 to move back and forth, allowing the corresponding scraper 26 to scrape along the upper surface of magnetic plate 11 to one side. This pushes the metal adhered to magnetic plate 11 to a designated position, effectively sorting the metal in the slag. The entire process is cyclical and requires no human intervention. This device significantly improves sorting efficiency and processing capacity, enabling continuous, assembly-line operations for slag processing. Compared to manual or simple mechanical sorting, the processing speed is increased several times, significantly shortening the sorting cycle and meeting the large-scale slag processing needs of large incineration plants. The automated system greatly reduces human intervention, requiring only a small number of personnel for monitoring and maintenance. This avoids high-intensity, high-risk manual sorting operations in harsh environments, significantly reducing labor costs and safety risks. It can also more accurately and thoroughly capture iron from the slag. Magnetic metals, including fine particles, significantly improve the overall recovery rate of valuable metals. Simultaneously, automated processes reduce contamination, increasing the purity of recovered metals. Efficiently recovered metals can be directly sold as renewable resources, bringing considerable economic benefits to waste incineration plants while reducing the extraction and consumption of primary mineral resources, aligning with the concept of a circular economy. After efficient metal recovery, the metal content of the remaining slag is greatly reduced, making it more conducive to subsequent resource utilization or safe landfilling, reducing the burden on landfills and the potential risk of heavy metal leaching, and improving the resource utilization and harmlessness of the entire waste incineration process.

[0038] The sorting table 1 is equipped with rotatable friction rollers 6 at both the front and rear ends, and the conveyor belt 2 is sleeved on the outer surface of the two friction rollers 6. A hopper 5 is also provided on one side of the sorting table 1.

[0039] like Figures 2-3As shown, the friction roller 6 is rotatably connected to the inner wall of the sorting table 1. The sorting table 1 is also equipped with a motor. The friction roller 6 is fixed to the output end of the motor. When the motor starts, it can drive the friction roller 6 to rotate. The motor is existing technology and will not be described in detail. When the friction roller 6 rotates, it can drive the conveyor belt 2 to move. The hopper 5 is fixed to one side of the sorting table 1. The hopper 5 is used to receive the sorted slag. The flat plate 4 is fixed to the inner end face of the two side plates 3. When the slag moves on the sorting table 1, it can be horizontally leveled by the obstruction of the flat plate 4.

[0040] The sorting table 1 is provided with a first motor 7 on one side, and a main shaft 47 is fixedly connected to the output end of the first motor 7. A lever 8 is fixedly connected to the outer surface of the main shaft 47, and a grooved wheel 9 that cooperates with the lever 8 is coaxially fixed to one side of the collecting square roller 10.

[0041] like Figures 4-5 As shown, the function of the first motor 7 is to provide rotational power to the main shaft 47. The first motor 7 is fixedly connected to one side of the sorting table 1. A rotating shaft is fixedly connected to the inner wall of the center of the collecting square roller 10 and the grooved wheel 9. The rotating shaft is rotatably connected to the inner wall of the side plate 3. When the main shaft 47 rotates, it can drive the lever 8 to rotate. When the lever 8 rotates, it can drive the grooved wheel 9 to rotate intermittently through cooperation with the grooved wheel 9, that is, the corresponding collecting square roller 10 rotates intermittently, and the angle of each intermittent rotation is 90 degrees.

[0042] A disc cam 24 is fixedly connected to the outer surface of the main shaft 47. Two side rods 12 are fixedly connected to the upper surface of the side plate 3. A rectangular cover 13 is slidably connected to the inner wall of the side rod 12. The drive plate 14 is installed on the rectangular cover 13. An L-shaped connecting rod 23 is fixedly connected to one end face of the rectangular cover 13. The lower end of the L-shaped connecting rod 23 is provided with a first sliding pin 25 that cooperates with the disc cam 24.

[0043] like Figure 5 As shown, the side rod 12 supports and limits the rectangular cover 13, which can slide up and down on the inner wall of the side rod 12; when the rectangular cover 13 moves up and down, the drive plate 14 can move up and down with the rectangular cover 13; the installation and shape of the L-shaped connecting rod 23, the disc cam 24, and the first sliding pin 25 are as follows. Figure 5As shown, when the disc cam 24 rotates, the first sliding pin 25, rectangular cover 13, and L-shaped connecting rod 23 can intermittently move up and down due to the meshing of the first sliding pin 25 with the disc cam 24. When the rectangular cover 13 is at its lowest position, it can seal the upper port of the collecting square roller 10. At this time, when the drive plate 14 and scraper 26 are cleaning the magnetic plate 11, it can prevent the metal on the magnetic plate 11 from falling to the outside, that is, it can accurately push the metal to the designated position. The magnetic plate 11 can be an electromagnetic plate or a permanent magnet plate, preferably an electromagnetic plate. When the electromagnetic plate 11 rotates to the highest position, the electromagnetic plate 11 is closed, that is, the electromagnetic plate 11 no longer magnetically attracts metal. At this time, the scraper 26 can more easily push the metal on the electromagnetic plate 11. When the electromagnetic plate 11 rotates to the sides or bottom position, it opens and can magnetically fix the metal. The electromagnetic plate 11 is existing technology and will not be described in detail. With the cooperation of the disc cam 24, the first sliding pin 25, the lever 8 and the grooved wheel 9, when the main shaft 47 rotates, it can drive the collecting square roller 10 to rotate intermittently and the rectangular cover 13 to move up and down intermittently. That is, when the collecting square roller 10 is stationary, the rectangular cover 13 can be stationary at the bottom and in contact with the upper surface of the collecting square roller 10, preventing it from falling when the scraper 26 cleans the metal on the upper end of the magnetic plate 11. When the collecting square roller 10 rotates, the rectangular cover 13 and the scraper 26 can move upward to prevent movement interference with the collecting square roller 10.

[0044] The drive plate 14 is slidably connected to the inner wall of the rectangular cover 13, the scraper 26 is slidably connected to the lower inner wall of the drive plate 14, the middle inner wall of the drive plate 14 is slidably connected to the guide plate 15, the upper inner wall of the scraper 26 is fixedly connected to the short pin 16, the inner wall of the guide plate 15 is provided with a guide groove that cooperates with the short pin 16, and the left and right ends of the rectangular cover 13 are respectively provided with a first stop surface 21 and a second stop surface 22 that cooperate with the guide plate 15.

[0045] like Figure 6 and Figure 7As shown, the drive plate 14 can slide left and right on the inner wall of the rectangular cover 13, the scraper 26 can slide up and down on the inner wall of the drive plate 14, and the guide plate 15 can slide left and right on the inner wall of the drive plate 14. There is a certain friction between the guide plate 15 and the drive plate 14. When the drive plate 14 moves, it can drive the guide plate 15 to move synchronously. Gaskets 17 are fixed to both ends of the guide plate 15. When the gaskets 17 contact the first stop surface 21 or the second stop surface 22, they can reduce the buffering force. The guide groove includes a lower horizontal groove 18, a first inclined groove 19, and an upper horizontal groove 20. When the short pin 16 engages with the lower horizontal groove 18, when the guide plate 15 does not move, the corresponding short pin 16 and scraper 26 are in the bottommost state, that is, the scraper is in the scraping position. Plate 26 can contact the upper surface of magnetic plate 11. When short pin 16 engages with the first inclined groove 19, when guide plate 15 moves left or right, it can drive short pin 16 and scraper 26 to move up or down, that is, adjust the position of scraper 26. When short pin 16 engages with upper transverse groove 20, when guide plate 15 does not move, the corresponding short pin 16 and scraper 26 are at the top position, that is, scraper 26 can disengage from magnetic plate 11. When drive plate 14 moves from left to right, scraper 26, under the engagement of short pin 16 and lower transverse groove 18, can be at the bottom position, that is, scraper 26 can contact the upper surface of magnetic plate 11. At this time, scraper 26 can push and scrape the upper surface of magnetic plate 11. When the drive plate 14 moves to the right and the pad 17 contacts the second stop surface 22, the guide plate 15 stops moving to the right due to the obstruction of the second stop surface 22. As the drive plate 14, short pin 16, scraper 26, etc., continue to move to the right, the short pin 16, engaged with the lower transverse groove 18, the first inclined groove 19, and the upper transverse groove 20, can enter the inner wall of the upper transverse groove 20. At this time, the scraper 26 can move upwards to disengage from the magnetic plate 11, i.e., the scraper 26 moves away from the magnetic plate 11. When the drive plate 14 moves from right to left, it can drive the guide plate 15, short pin 16, scraper 26, etc., to move synchronously to the left. Since the scraper 26 is at the upper position at this time, it no longer affects the magnetic plate 11. 1. When the drive plate 14 moves to the left and the pad 17 contacts the first stop surface 21, the guide plate 15 stops moving to the left. When the drive plate 14 continues to move to the left, the short pin 16 engages with the upper horizontal groove 20, the first inclined groove 19 and the lower horizontal groove 18, which allows the scraper 26 to move downward, that is, the scraper 26 contacts the upper end surface of the magnetic plate 11 again. When the drive plate 14 moves to the right again, the scraper 26 can push the metal material at the upper end of the magnetic plate 11 to the right to the designated position. That is, when the drive plate 14 moves, the short pin 16 and the guide plate 15 cooperate to make the scraper 26 scrape to the right in one direction, thereby pushing the metal material at the upper end of the magnetic plate 11 to the designated position on the right side.

[0046] The upper end of the rectangular cover 13 is provided with an I-beam plate 38 fixedly connected to the side rod 12. A telescopic rod is slidably connected to the inner wall of the I-beam plate 38. A long connecting rod 35 is provided at the upper end of the I-beam plate 38. A pry bar 33 that can swing is provided on the sorting table 1. One end of the long connecting rod 35 is hinged to the telescopic rod, and the other end of the long connecting rod 35 is hinged to the pry bar 33. The lower end of the telescopic rod is fixedly connected to the drive plate 14.

[0047] like Figure 10 As shown, the I-beam plate 38 is fixed to the upper surface of the four side rods 12. The telescopic rod can slide left and right on the inner wall of the I-beam plate 38. When the pry bar 33 swings, it can drive the telescopic rod and the drive plate 14 to move back and forth left and right through the hinge of the long connecting rod 35, thereby causing the drive plate 14 and the scraper 26 to move back and forth left and right. The drive plate 14 is also slidably connected to the inner wall of the rectangular cover 13. That is, when the rectangular cover 13 moves up and down, the drive plate 14 can follow the rectangular cover 13 to move up and down, and the drive plate 14 can also slide left and right on the inner wall of the rectangular cover 13 without affecting each other. The drive plate 14 is fixed to the telescopic end of the telescopic rod. That is, when the rectangular cover 13 and the drive plate 14 move up and down, the telescopic rod can extend and retract up and down. The telescopic rod always maintains a connection with the drive plate 14. That is, when the telescopic rod moves left and right, it can cause the drive plate 14 to move left and right.

[0048] A long cam 28 is fixedly attached to the outer surface of the main shaft 47. A U-shaped frame 27 is fixedly attached to one side end face of the sorting table 1. An extension plate 29 is provided at the upper end of the U-shaped frame 27. A first slider 30 is slidably connected to the inner wall of the extension plate 29. A long pin 31 that cooperates with the long cam 28 is fixedly attached to the inner wall of the first slider 30. A horizontal pin 32 is provided at the upper end of the long pin 31. A pry bar 33 is hinged to the upper end of the U-shaped frame 27. A short keyway 34 that cooperates with the horizontal pin 32 is provided at the lower end of the pry bar 33.

[0049] like Figures 8-10As shown, the main shaft 47 is rotatably connected to the U-shaped frame 27. The extension plate 29 is used to limit and support the first slider 30. The first slider 30 can slide left and right on the extension plate 29. Through the engagement of the long pin 31 and the long cam 28, when the long cam 28 rotates, it can drive the long pin 31 and the horizontal pin 32 to move back and forth left and right. An arched seat is fixed to the upper surface of the long pin 31, and the horizontal pin 32 is fixed to the arched seat, which is equivalent to the horizontal pin 32 being fixed to the upper end of the long pin 31. Support seats are fixed to both the front and rear sides of the upper surface of the U-shaped frame 27. A rotating shaft is fixed to the inner wall of the support seat. The pry bar 33 is rotatably connected to the outer surface of the rotating shaft. On the surface, the pry bar 33 is hinged to the upper surface of the U-shaped frame 27. When the long pin 31 and the cross pin 32 move back and forth, the engagement of the cross pin 32 with the short keyway 34 drives the pry bar 33 to swing back and forth. When the pry bar 33 swings back and forth, it also causes the drive plate 14 to move back and forth. Therefore, when the main shaft 47 rotates, it can cause the drive plate 14 to move back and forth. Through the cooperation of the long cam 28 and the long pin 31, the disc cam 24 and the first sliding pin 25, and the lever 8 and the grooved wheel 9, when the main shaft 47 rotates, it can drive the long cam 28, the disc cam 24 and the lever 8 to move back and forth. As the main shaft 47 rotates, the drive plate 14 and scraper 26 can move to the right, pushing the metal material on the upper surface of the magnetic plate 11. When the long cam 28 rotates to the point where the drive plate 14 moves from right to left, the scraper 26 can move upwards to disengage from the magnetic plate 11. As the main shaft 47 continues to rotate, the collecting square roller 10 can rotate 90 degrees under the meshing of the lever 8 and the grooved wheel 9, so that the lower end face of the magnetic plate 11 continues to face downwards. At the same time, under the meshing of the disc cam 24 and the first sliding pin 25, the rectangular cover 13, drive plate 14, etc., can move upwards, causing the rectangular cover 13 to disengage. The contact between the main shaft 47 and the collecting square roller 10 is reduced to prevent motion interference during rotation. When the main shaft 47 continues to rotate, the collecting square roller 10 can stop intermittently under the meshing of the lever 8 and the grooved wheel 9. The corresponding rectangular cover 13 moves down to the bottom and then stops intermittently under the meshing of the disc cam 24 and the first sliding pin 25. The drive plate 14 and the scraper 26 can move to the top left and then to the right. When the scraper 26 moves to the right, it can be in the bottom position, that is, the scraper 26 is in contact with the upper surface of the magnetic plate 11, and the metal material on the upper surface of the magnetic plate 11 is pushed to the designated position again.

[0050] A top plate 39 is fixedly connected to the upper end of the outer surface of the telescopic rod. A material raking rake 44 is provided at the lower end of the top plate 39. A crank 43 is coaxially fixed to the upper end of the material raking rake 44. A movable second slider 40 is provided on the inner wall of the top plate 39. A short connecting rod 42 is provided at the upper end of the top plate 39. One end of the short connecting rod 42 is hinged to the crank 43, and the other end of the short connecting rod 42 is hinged to the square slider.

[0051] like Figures 11-12As shown, the telescopic rod includes an inner rod 37 and an outer cylinder 36. The inner rod 37 is slidably connected vertically to the inner wall of the outer cylinder 36, and slidably connected horizontally to the inner wall of the I-beam plate 38. The drive plate 14 is fixed to the lower surface of the outer cylinder 36, and the top plate 39 is fixed to the outer surface of the inner rod 37. When the telescopic rod moves left and right, it can drive the top plate 39 and the material-draining rake 44 to move left and right. When the material-draining rake 44 moves left and right, it can longitudinally level the slag at the upper end of the conveyor belt 2, making the slag spread more evenly, which is convenient for the magnetic plate 11 to attract gold. A rotating shaft is fixed to the inner wall of the center of the crank 43 and the slag rake 44. The rotating shaft is rotatably connected to the inner wall of the top plate 39. The second slider 40 is slidably connected to the inner wall of the top plate 39. When the second slider 40 moves back and forth, it can drive one end of the short connecting rod 42 to move back and forth. The other end of the short connecting rod 42 will drive the crank 43 to swing. When the crank 43 swings, it can drive the slag rake 44 to rotate. When the slag rake 44 moves left and right and rotates back and forth, it can spread the slag more evenly and further improve metal recovery.

[0052] The upper surface of the second slider 40 is fixed with a second sliding pin 41, and the upper end of the sorting table 1 is also provided with a track plate 45. The inner wall of the track plate 45 is provided with a wave groove 46 that cooperates with the second sliding pin 41.

[0053] like Figure 11 and Figure 12 As shown, the track plate 45 is fixed to the upper surface of the I-beam plate 38, meaning the track plate 45 is essentially fixed to the sorting table 1 and cannot move. One end of the short connecting rod 42 is rotatably connected to the outer surface of the second sliding pin 41, meaning the short connecting rod 42 is hinged to the upper surface of the second slider 40. Under the engagement of the second sliding pin 41 and the corrugated groove 46, when the top plate 39, the second slider 40, the second sliding pin 41, and the material raker 44 move back and forth, the second sliding pin 41 can move back and forth while oscillating back and forth. When the second sliding pin 41 oscillates back and forth, it can also drive the second slider 40 to oscillate back and forth, meaning the corresponding material raker 44 moves back and forth while reversing direction.

[0054] A method for using a waste incinerator slag sorting and recycling device for valuable metals includes the following steps:

[0055] S1. Feeding and leveling: The incinerated slag is poured onto the conveyor belt 2 of the sorting table 1. The conveyor belt 2 moves to drive the slag to move. The leveling plate 4 is used to level the moving slag laterally.

[0056] S2, magnetic metal attraction: The conveyor belt 2 transports the leveled slag to below the collecting square roller 10; when the magnetic plate 11 on the outer surface of the collecting square roller 10 rotates to the lower position, it attracts the ferromagnetic metal in the slag.

[0057] S3. Scraping and recovering metal: When the magnetic plate 11 that adsorbs metal rotates intermittently with the collecting square roller 10 to the position directly above, the drive plate 14 drives the scraper 26 to move, scraping the adsorbed metal toward the designated recovery side.

[0058] S4. Cyclic operation: After cleaning is completed, the main shaft 47 continues to rotate, causing the collecting square roller 10 to rotate intermittently at a specified angle again, so that the next magnetic plate 11 moves to the lower position for adsorption.

[0059] In use, when the slag moves to the lower end of the collecting roller 10, the magnetic plate 11 magnetically attracts the metal within the slag. The metal is fixed to the magnetic plate 11 under this magnetic attraction. Once a specified amount of metal adheres to the magnetic plate 11, the main shaft 47 rotates, causing the collecting roller 10 to rotate intermittently. This means the magnetic plate 11 at the other end of the collecting roller 10 continues its magnetic attraction operation. When the magnetic plate 11 rotates to directly above the collecting roller 10, the rotation of the main shaft 47 causes the drive plate 14 to move back and forth, allowing the corresponding scraper 26 to scrape along the upper surface of the magnetic plate 11 to one side. This pushes the metal adhered to the magnetic plate 11 to a designated position, thus sorting the metal within the slag. The entire process is cyclical and requires no manual intervention. This device significantly improves sorting efficiency and processing capacity, achieving continuous, assembly-line slag processing. Compared to manual or simple mechanical sorting, the processing speed is significantly faster. The automated system significantly improves efficiency and shortens the sorting cycle, meeting the large-scale slag processing needs of large incineration plants. It greatly reduces manual intervention, requiring only a small number of personnel for monitoring and maintenance, avoiding the high-intensity, high-risk manual sorting work in harsh environments, thus significantly reducing labor costs and safety risks. It can more accurately and thoroughly capture ferromagnetic metals, including fine particles, in the slag, thereby significantly improving the overall recovery rate of valuable metals. Simultaneously, the automated process reduces contamination, improving the purity of the recovered metals. The efficiently recovered metals can be directly sold as renewable resources, bringing considerable economic benefits to waste incineration plants while reducing the consumption of primary mineral resources, aligning with the concept of a circular economy. After efficient metal recovery, the remaining slag has a significantly reduced metal content, making it more conducive to subsequent resource utilization or safe landfill, reducing the landfill burden and potential heavy metal leaching risks, and improving the resource utilization and harmlessness of the entire waste incineration process.

Claims

1. A device for sorting and recovering valuable metals from waste incinerator slag, comprising a sorting table (1), characterized in that: The sorting table (1) is provided with a movable conveyor belt (2). The upper end of the sorting table (1) is provided with side plates (3) on both sides. The inner side of the two side plates (3) is provided with a flat material plate (4) that cooperates with the conveyor belt (2). The sorting table (1) is also provided with a sorting mechanism on one side. The sorting mechanism includes a rotatable main shaft (47). The sorting mechanism also includes a collection square roller (10) set on the upper end of the conveyor belt (2). The outer surface of the collection square roller (10) is provided with multiple magnetic plates (11). The upper end of the sorting table (1) is also provided with a pushing component that cooperates with the magnetic plate (11). The pushing component includes a drive plate (14). The lower end of the drive plate (14) is provided with a scraper (26). When the main shaft (47) rotates, the collection square roller (10) can rotate intermittently and the drive plate (14) can move back and forth left and right. When the drive plate (14) moves back and forth left and right, the scraper (26) can scrape along the upper end of the magnetic plate (11) to one side. The drive plate (14) is slidably connected to the inner wall of the rectangular cover (13), the scraper (26) is slidably connected to the lower inner wall of the drive plate (14), the middle inner wall of the drive plate (14) is slidably connected to the guide plate (15), the upper inner wall of the scraper (26) is fixedly connected to the short pin (16), the inner wall of the guide plate (15) is provided with a guide groove that cooperates with the short pin (16), and the left and right ends of the rectangular cover (13) are respectively provided with a first stop surface (21) and a second stop surface (22) that cooperate with the guide plate (15). The upper end of the rectangular cover (13) is provided with an I-beam plate (38) fixedly connected to the side rod (12). The inner wall of the I-beam plate (38) is slidably connected with a telescopic rod. The upper end of the I-beam plate (38) is provided with a long connecting rod (35). The sorting table (1) is provided with a swingable pry bar (33). One end of the long connecting rod (35) is hinged to the telescopic rod, and the other end of the long connecting rod (35) is hinged to the pry bar (33). The lower end of the telescopic rod is fixedly connected to the drive plate (14). A long cam (28) is fixedly attached to the outer surface of the main shaft (47). A U-shaped frame (27) is fixedly attached to one side end face of the sorting table (1). An extension plate (29) is provided at the upper end of the U-shaped frame (27). A first slider (30) is slidably connected to the inner wall of the extension plate (29). A long pin (31) that cooperates with the long cam (28) is fixedly attached to the inner wall of the first slider (30). A cross pin (32) is provided at the upper end of the long pin (31). A pry bar (33) is hinged to the upper end of the U-shaped frame (27). A short keyway (34) that cooperates with the cross pin (32) is opened at the lower end of the pry bar (33). A top plate (39) is fixedly connected to the upper end of the outer surface of the telescopic rod. A material raking rake (44) is provided at the lower end of the top plate (39). A crank (43) is coaxially fixedly connected to the upper end of the material raking rake (44). A movable second slider (40) is provided on the inner wall of the top plate (39). A short connecting rod (42) is provided at the upper end of the top plate (39). One end of the short connecting rod (42) is hinged to the crank (43), and the other end of the short connecting rod (42) is hinged to the square slider. The upper surface of the second slider (40) is fixed with a second sliding pin (41), and the upper end of the sorting table (1) is also provided with a track plate (45). The inner wall of the track plate (45) is provided with a wave groove (46) that cooperates with the second sliding pin (41).

2. The apparatus for sorting and recovering valuable metals from waste incinerator slag as described in claim 1, characterized in that: The sorting table (1) is equipped with rotatable friction rollers (6) at both ends. The conveyor belt (2) is fitted on the outer surface of the two friction rollers (6). The sorting table (1) is also equipped with a feeding hopper (5) on one side.

3. The apparatus for sorting and recovering valuable metals from waste incinerator slag as described in claim 1, characterized in that: The sorting table (1) is provided with a first motor (7) on one side, the main shaft (47) is fixedly connected to the output end of the first motor (7), the lever (8) is fixedly connected to the outer surface of the main shaft (47), and the grooved wheel (9) that cooperates with the lever (8) is coaxially fixedly connected to one side of the collecting square roller (10).

4. The apparatus for sorting and recovering valuable metals from waste incinerator slag as described in claim 1, characterized in that: A disc cam (24) is fixedly connected to the outer surface of the main shaft (47). Two side rods (12) are fixedly connected to the upper surface of the side plate (3). A rectangular cover (13) is slidably connected to the inner wall of the side rod (12). The drive plate (14) is installed on the rectangular cover (13). An L-shaped connecting rod (23) is fixedly connected to one end face of the rectangular cover (13). The lower end of the L-shaped connecting rod (23) is provided with a first sliding pin (25) that cooperates with the disc cam (24).

5. The method of using the waste incinerator slag sorting and recycling valuable metal device as described in claim 1, characterized in that: Includes the following steps: S1. Feeding and leveling: The incinerated slag is poured onto the conveyor belt (2) of the sorting table (1), and the conveyor belt (2) moves to drive the slag to move; the leveling plate (4) is used to level the moving slag laterally. S2, magnetic metal attraction: The conveyor belt (2) transports the leveled slag to the area below the collecting square roller (10); the magnetic plate (11) on the outer surface of the collecting square roller (10) attracts the ferromagnetic metal in the slag when it rotates to the lower position. S3, Scraping and Recycling Metal: When the magnetic plate (11) adsorbing the metal rotates intermittently with the collecting square roller (10) to the position directly above, the drive plate (14) drives the scraper (26) to move, scraping the adsorbed metal toward the designated recycling side. S4. Cyclic operation: After cleaning is completed, the main shaft (47) continues to rotate, causing the collecting square roller (10) to rotate intermittently at a specified angle, so that the next magnetic plate (11) moves to the lower position for adsorption.

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