A solid waste recycling system for the metallurgical industry chain

Abstract

This application relates to the technical field of metallurgical solid waste resource utilization, and in particular to a metallurgical industrial chain solid waste recycling system, including an inclined support cylinder, a rotating drum rotatably arranged inside the support cylinder, and a metal separator arranged inside the rotating drum. The metal separator separates metal particles in the solid waste by magnetic adsorption. The metal separator includes magnetic brushes evenly distributed circumferentially inside the rotating drum, and a material collection hopper rotatably arranged inside the rotating drum. This invention arranges the magnetic brushes in an inclined spiral structure inside the rotating drum, which can effectively slow down the downward speed of metallurgical solid waste powder, prevent the material from falling quickly through the sorting area, and significantly extend the residence time of solid waste material inside the rotating drum. This allows the solid waste powder to fully and comprehensively contact the magnetic brush bristles, effectively capturing fine ferromagnetic metal particles, solving the problems of short material contact time and incomplete sorting of fine metal particles in traditional sorting equipment, and improving the comprehensiveness of the initial sorting.

Description

Technical Field

[0001] This application relates to the technical field of metallurgical solid waste resource utilization, and in particular to a metallurgical industry chain solid waste recycling system. Background Technology

[0002] Solid waste from the metallurgical industry chain refers to solid waste generated throughout the entire process of mining, mineral processing, smelting, and metal processing. This type of solid waste is generated in enormous quantities and has a complex composition, typically categorized into slag, dust and sludge, and organic debris. Among these, bulk slag solid wastes such as blast furnace slag, steel slag, and red mud mainly contain oxides of calcium, silicon, and aluminum.

[0003] The recycling of solid waste follows the principles of reduction, resource recovery, and harmlessness. Value is maximized through tiered utilization and cross-industry collaboration. For example, a metallurgical solid waste intelligent recycling device (application number CN202411555883.2) uses grinding rollers and arc-shaped plates to extrude and shear materials into powder. Materials that do not meet particle size requirements are intercepted by a guide mesh and blown back into the grinding zone by airflow from jet nozzles inside the grinding rollers, ensuring complete powdering. Simultaneously, jet nozzles spray air onto a sliding frame inside the guide mesh, pushing the frame to clean the mesh holes with a brush plate, preventing blockage. The powdered material falls onto two opposing rotating weak magnetic rollers below. Ferromagnetic metal particles are adsorbed and rotate with the rollers, while non-magnetic impurities fall directly out. Metal particles are brushed off and collected by the brush plate when they reach the bottom. Strong electromagnetic plates on both sides are activated periodically to assist in removing residual metal from the weak magnetic rollers, achieving continuous recycling.

[0004] However, when the existing technologies mentioned above are used for the recycling of solid waste in the metallurgical industry chain, they use airflow to transport powder while performing magnetic separation. However, the high-speed airflow will generate a huge drag force on the magnetic particles. For fine iron powder, the drag force of the airflow may be greater than the magnetic force, causing the iron powder that should be adsorbed to be blown away by the wind and enter the impurity collection system, resulting in the loss of metal recovery rate.

[0005] Since the cross-section of the grinding roller is elliptical, its contact with the arc plate is theoretically a line or an extremely narrow surface. When processing high-hardness metallurgical solid waste, line contact will result in extremely high pressure on the contact surface, which will accelerate the wear of the grinding block and the arc plate, creating gaps and affecting the crushing efficiency.

[0006] Based on this, as stated above, there is still room for improvement in existing technologies for the recycling of solid waste in the metallurgical industry chain. Summary of the Invention

[0007] To address the aforementioned technical problems, this application provides a solid waste recycling system for the metallurgical industry chain, employing the following technical solution: A solid waste recycling system for the metallurgical industry chain includes an inclined support cylinder, a rotating drum inside the support cylinder, and a metal separator inside the rotating drum. The metal separator separates metal particles from the solid waste by magnetic adsorption. The metal separator includes magnetic brushes evenly distributed around the circumference inside the rotating drum. The bristles of the magnetic brushes have magnetic force to adsorb metal particles from the solid waste. A collection hopper is provided inside the rotating drum to collect the metal particles adsorbed on the magnetic brushes.

[0008] Preferably, the magnetic brushes are arranged in an inclined spiral inside the rotating drum. When the drum rotates, the magnetic brushes are used to slow down the movement of solid waste and increase the residence time of solid waste in the rotating drum.

[0009] Preferably, the material hopper includes a hopper body located inside a rotating drum on one side of a support cylinder, and the hopper body has a feed inlet along its length, with a scraper toothed plate corresponding to the magnetic brush provided at the feed inlet; The scraper teeth at the end of the toothed plate are used to scrape off metal particles from the magnetic brush, allowing the metal particles to enter the hopper from the feed inlet.

[0010] Preferably, a baffle plate is rotatably provided at one end of the drum, and a discharge frame is connected to the lower end of the baffle plate. The lower end of the discharge frame passes through the outside of the paper support cylinder, and the baffle plate passes through one end of the hopper body. A spiral blade is rotatably provided inside the hopper body.

[0011] Preferably, a wind tunnel magnetic separator is installed inside the support cylinder on one side of the baffle plate. The wind tunnel magnetic separator adsorbs the separated metal particles and then blows away the dust by airflow. The wind tunnel magnetic separator includes a magnetic sleeve that is rotatably installed inside a support cylinder. The magnetic sleeve is located on one side of the baffle plate and is rotatably connected to it. The bucket body passes through the outer end of the baffle plate and is connected to a pipe. The pipe extends into the magnetic sleeve, and the spiral blades extend into the pipe at the same time. Several evenly arranged through holes are opened on the pipe.

[0012] Preferably, an air guide pipe is provided on the baffle plate, with one end of the air guide pipe extending to the outside of the support cylinder.

[0013] Preferably, a baffle is provided at the lower end of the tube, which is used to block the airflow from blowing down metal particles.

[0014] Preferably, a baffle is provided on one side of the support cylinder, and a discharge hopper is provided on the baffle inside the magnetic sleeve. The discharge hopper is used to collect metal particles adsorbed on the magnetic sleeve. The discharge hopper includes a hopper body provided on the baffle, the hopper body is located inside the upper side of the magnetic sleeve, and a scraper is provided at the upper end of the hopper body. The scraper is in close contact with the magnetic sleeve.

[0015] Preferably, one end of the bucket body passes through the baffle plate, and conveying blades are rotatably installed inside the bucket body.

[0016] In summary, this application includes at least one of the following beneficial technical effects: 1. This invention employs an inclined spiral structure to arrange magnetic brushes inside a rotating drum, effectively slowing down the downward flow of metallurgical solid waste powder and preventing the material from rapidly sliding through the sorting area, thus significantly extending the residence time of the solid waste material inside the drum. This ensures full and comprehensive contact between the solid waste powder and the magnetic brush bristles, effectively capturing fine ferromagnetic metal particles. This solves the problems of short material contact time and incomplete separation of fine metal particles in traditional sorting equipment, improving the comprehensiveness of the initial sorting.

[0017] 2. This invention employs a dual-stage separation structure, combining primary magnetic brush separation with secondary purification separation using a wind tunnel magnetic separator. The primary separation coarsely separates metallic and non-metallic impurities. Subsequent secondary adsorption using a magnetic sleeve, coupled with an airflow purging structure, effectively removes dust and fine impurities adhering to the surface of metal particles. This two-stage separation works in tandem to overcome the insufficient purity of single magnetic separation, significantly improving the purity of valuable metal products and enhancing the quality of solid waste recycling.

[0018] 3. The present invention adds a baffle structure at the lower end of the pipe, which can effectively block the through holes on the side wall of the pipe and prevent the purified airflow from blowing directly down the conveyed metal particles. This avoids the high-speed airflow from dragging and blowing away the fine metal particles, solves the problem that valuable metal particles are easily lost with the airflow in the traditional airflow dust removal process, effectively reduces material loss, improves the recycling rate of valuable metals in metallurgical solid waste, and saves resources.

[0019] 4. This invention can automatically complete the fully automated operation of solid waste feeding, magnetic separation, airflow purification, impurity discharge, and metal discharge. Non-metallic impurities can be automatically discharged through the discharge frame and air duct, while valuable metals are automatically collected and recycled. No manual intervention is required in the sorting and impurity discharge process. The automation level is high, the operation flow is smooth and continuous, and it can achieve efficient recycling and reuse of metallurgical solid waste resources. It is energy-saving, environmentally friendly, and highly practical. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the present invention.

[0021] Figure 2 This is a three-dimensional sectional view of the present invention.

[0022] Figure 3 This is a schematic diagram of the structure between the rotating drum and the metal separator of the present invention.

[0023] Figure 4 This is a schematic diagram of the material hopper of the present invention.

[0024] Figure 5 This is a schematic diagram of the structure of the metal separator and wind tunnel magnetic separator of the present invention.

[0025] Figure 6This is a schematic diagram of the structure between the material hopper and the wind tunnel magnetic separator of the present invention.

[0026] Figure 7 This is a schematic diagram of the structure between the bucket body and the tube section of the present invention.

[0027] Figure 8 This is a schematic diagram of the structure between the tubes of the present invention.

[0028] Figure 9 This is a schematic diagram of the structure of the discharge hopper of the present invention.

[0029] Explanation of reference numerals in the attached drawings: 1. Support cylinder; 2. Rotating drum; 3. Metal separator; 31. Magnetic brush; 32. Baffle plate; 33. Discharge frame; 4. Gathering hopper; 41. Hopper body; 42. Feed inlet; 43. Scraper blade; 44. Spiral blade; 5. Wind tunnel magnetic separator; 51. Magnetic sleeve; 52. Pipe section; 53. Through hole; 54. Air guide pipe; 55. Baffle; 56. Baffle plate; 6. Discharge hopper; 61. Hopper body; 62. Scraper; 63. Conveying blade. Detailed Implementation

[0030] The following is in conjunction with the appendix Figures 1 to 9 This application will be described in further detail.

[0031] This application discloses a solid waste recycling system for the metallurgical industry chain, which can automatically complete the entire process of solid waste sorting and purification, impurity discharge and metal recycling without human intervention. The process is continuous and efficient, and can realize the energy-saving and environmentally friendly recycling of metallurgical solid waste resources.

[0032] Example 1: A metallurgical solid waste recycling system includes an inclined support cylinder 1, a rotating drum 2 rotatably arranged inside the support cylinder 1, and a metal separator 3 arranged inside the rotating drum 2. During operation, the crushed metallurgical solid waste powder is fed into the inclined rotating drum 2, and then the rotating drum 2 is driven to rotate by a motor. The metal separator 3 separates the metal particles in the crushed metallurgical solid waste powder by magnetic adsorption, thereby achieving precise separation of valuable metals and non-metallic impurities.

[0033] Specifically, the metal sorter includes magnetic brushes 31 evenly distributed circumferentially inside the rotating drum 2. The bristles of the magnetic brushes 31 have magnetic properties that can adsorb metal particles in solid waste.

[0034] During operation, the pulverized metallurgical solid waste powder is fed into the inclined rotating drum 2. The rotating drum 2 is driven to rotate by a motor, and the magnetic brushes 31 evenly distributed on its inner circumferential wall move in a circular motion in sync. The magnetic brush bristles come into full contact with the solid waste powder and capture the ferromagnetic metal particles in the powder through magnetic adsorption. This effectively adsorbs fine iron powder particles and avoids the problem of fine metal particles being lost due to high-speed airflow dragging in the existing technology.

[0035] A collection hopper 4 is fixedly installed inside the rotating drum 2, located on one side of the rotating drum 2. The collection hopper 4 is used to collect metal particles adsorbed on the magnetic brush 31. As the rotating drum 2 continues to rotate, the magnetic brush 31, which adsorbs metal particles, rotates to the position of the collection hopper 4. The collection hopper 4 scrapes off the metal particles attached to the bristles of the magnetic brush 31 and collects them, realizing the collection and discharge of valuable metals. Non-magnetic non-metallic impurities in solid waste cannot be adsorbed by the magnetic brush 31 and fall naturally under the action of gravity and the rotational disturbance of the rotating drum 2, thus continuously and stably completing the precise separation of valuable metals and non-metallic impurities in metallurgical solid waste powder.

[0036] The magnetic brush 31 is arranged in an inclined spiral inside the rotating drum 2. When the rotating drum 2 rotates, the magnetic brush 31 is used to slow down the movement of solid waste and increase the residence time of solid waste in the rotating drum 2. That is, when the rotating drum 2 rotates, the magnetic brush 31 arranged in an inclined spiral can effectively slow down the downward movement speed of solid waste materials, prevent materials from sliding down quickly, effectively increase the residence time of solid waste inside the rotating drum 2, and make solid waste fully contact the magnetic structure to ensure the sorting effect.

[0037] The material hopper 4 includes a hopper body 41 located inside the rotating drum 2 on one side of the support cylinder 1. The hopper body 41 has a feed inlet 42 along its length, and a scraper plate 43 corresponding to the magnetic brush 31 is provided at the feed inlet 42. When the rotating drum 2 drives the magnetic brush 31 to rotate to the position of the scraper plate 43, the scraper teeth at the end of the scraper plate 43 can accurately scrape off the metal particles adsorbed on the brush bristles of the magnetic brush 31. The scraped metal particles enter the hopper body 41 through the feed inlet 42 and are collected.

[0038] A baffle plate 32 is rotatably installed at one end of the rotating drum 2. The baffle plate 32 is fixedly connected to the support cylinder 1. The rotating drum 2 rotates around the baffle plate 32, while the baffle plate 32 remains stationary. The baffle plate 32 can prevent solid waste from overflowing from the end of the rotating drum 2, ensuring that the material is sorted inside the rotating drum 2. A discharge frame 33 is connected to the lower end of the baffle plate 32. The lower end of the discharge frame 33 passes through the outside of the support cylinder 1 and is used to discharge non-metallic impurities after sorting in a timely manner.

[0039] One end of the bucket 41 passes through the baffle plate 32, and a spiral blade 44 is rotatably installed inside the bucket 41. Through the rotational conveying action of the spiral blade 44, the metal particles entering the bucket 41 can be stably and continuously conveyed outward, avoiding the accumulation and blockage of metal particles inside the bucket 41, and ensuring the continuous and stable operation of the equipment.

[0040] During operation, the drum 2 rotates continuously, and the magnetic brush 31, which adsorbs metal particles, rotates sequentially to the position of the hopper 4. The scraper plate 43 at the feed inlet 42 of the hopper body 41 corresponds to and cooperates with the magnetic brush 31. The scraper plate 43 at the end scraper removes the metal particles adsorbed on the brush bristles. The scraped metal particles enter the hopper body 41 through the feed inlet 42. The spiral blades 44 inside the hopper body 41 rotate continuously, and the collected metal particles are continuously spirally conveyed, and the metal particles are stably discharged outward, effectively preventing material accumulation and blockage, and ensuring continuous and smooth metal collection and conveying.

[0041] Meanwhile, the baffle plate 32 at the end of the rotating drum 2 can prevent material from overflowing from the end of the rotating drum 2, avoid material leakage, and ensure that all materials are sorted inside the rotating drum 2; the non-metallic impurities that are not adsorbed slide down under the action of gravity and the rotational disturbance of the rotating drum 2, and are finally discharged out of the equipment through the discharge frame 33 connected to the bottom of the baffle plate 32, thereby continuously completing the automated and precise sorting of valuable metals and non-metallic impurities in metallurgical solid waste powder.

[0042] Example 2: Based on Example 1, a wind tunnel magnetic separator 5 is installed inside the support cylinder 1, located on one side of the baffle plate 32. The wind tunnel magnetic separator 5 adsorbs the separated metal particles and then blows away the dust through airflow. The metal particles that have been initially separated by the magnetic brush 31 can be adsorbed and fixed again by the wind tunnel magnetic separator 5. Subsequently, the dust and fine impurities attached to the surface of the metal particles are blown away by the airflow. The bucket body 61 is located on the upper side inside the magnetic sleeve 51, which further improves the separation purity of valuable metals. In this way, the automated and precise separation and purification of valuable metals and non-metallic impurities in metallurgical solid waste powder can be continuously completed.

[0043] Specifically, the wind tunnel magnetic separator 5 includes a magnetic sleeve 51 rotatably disposed inside the support cylinder 1. The magnetic sleeve 51 is located on one side of the baffle plate 32 and is rotatably connected to it. The bucket body 41 passes through the outer end of the baffle plate 32 and is connected to a pipe section 52. The pipe section 52 extends into the magnetic sleeve 51, and the spiral blades 44 extend into the pipe section 52 simultaneously. Several evenly arranged through holes 53 are opened on the pipe section 52.

[0044] During operation, metal particles conveyed by the spiral blades 44 inside the bucket 41 continuously enter the tube 52 connected to the bucket 41, and are further pushed and conveyed by the spiral blades 44 extending into the tube 52. After being pushed to the tube 52 by the spiral blades, the metal particles fall and scatter from the through hole 53, and are within the magnetic field coverage of the magnetic sleeve 51 throughout the process. The magnetic sleeve 51 uses its own magnetism to magnetically capture the metal particles falling from the through hole in real time, so that they are firmly attached to the outer wall of the magnetic sleeve 51, thus completing the collection and adsorption of the metal particles.

[0045] A guide pipe 54 is installed on the baffle plate 32, with one end of the guide pipe 54 facing away from the magnetic sleeve 51 extending to the outside of the support cylinder 1. External purified airflow enters the magnetic sleeve 51 through the opening on the side of the support cylinder 1 facing the magnetic sleeve 51, forming a through airflow. As the airflow passes through the cavity of the magnetic sleeve 51, it carries away the fine non-metallic impurities and dust that cannot be attracted by the magnetic sleeve 51, and causes the impurities to enter the guide pipe 54 installed on the baffle plate 32 with the airflow, and finally discharge it outward through the guide pipe 54, completing the secondary purification and sorting of metal particles, effectively removing impurities mixed in with the metal particles, and improving the sorting purity of valuable metals.

[0046] Additionally, a baffle 55 is provided at the lower end of the tube section 52. The baffle 55 blocks the through hole 53 on the tube section 52, which can be used to block the airflow from blowing down the falling metal particles, preventing the airflow from blowing directly onto the falling metal particles and preventing valuable metal particles from being blown away by the airflow and causing loss.

[0047] A baffle plate 56 is fixedly installed on one side of the support cylinder 1. A discharge hopper 6 is installed on the baffle plate 56 inside the magnetic sleeve 51. The discharge hopper 6 is used to collect the metal particles adsorbed on the magnetic sleeve 51. As the magnetic sleeve 51 continues to rotate, the pure metal particles adsorbed on its outer wall are collected by passing through the discharge hopper 6 in sequence.

[0048] The discharge hopper 6 includes a hopper body 61 mounted on a baffle plate 56. The upper end of the hopper body 61 is located inside the magnetic sleeve 51. A scraper 62 is mounted on the upper end of the hopper body 61. The scraper 62 is tightly fitted to the magnetic sleeve 51. One end of the hopper body 61 passes through the baffle plate 56. A conveying blade 63 is rotatably mounted inside the hopper body 61. During operation, the magnetic sleeve 51 rotates, causing the metal particles adsorbed on its surface to rotate. The fixed scraper 62 scrapes the outer wall of the rotating magnetic sleeve 51, scraping the adsorbed metal particles into the hopper body 61 for collection. The collected metal particles are then continuously conveyed and discharged outwards by the conveying blade 63 inside the hopper body 61, completing the continuous automatic unloading of metal materials.

[0049] The implementation principle of this invention is as follows: Step 1: When the equipment is working, the crushed metallurgical solid waste powder is fed into the inclined support cylinder 1 and rotating cylinder 2. The rotating cylinder 2 is driven by the motor to rotate at a constant speed. The magnetic brushes 31 arranged in an inclined spiral inside the rotating cylinder 2 rotate synchronously with the rotating cylinder 2, which can effectively slow down the downward speed of the solid waste material and prolong the residence time of the material in the rotating cylinder 2, so that the solid waste powder can fully contact the bristles of the magnetic brushes 31. Utilizing the magnetism of the magnetic brushes 31, the fine ferromagnetic metal particles in the solid waste are accurately adsorbed, while non-metallic impurities do not have magnetism and cannot be adsorbed, thus realizing the initial coarse and fine separation of materials.

[0050] Step 2: As the rotating drum 2 continues to rotate, the magnetic brush 31, which has adsorbed metal particles, rotates to the inner position of the material collection hopper 4 of the rotating drum 2. The scraper plate 43 at the feed inlet 42 of the hopper body 41 precisely cooperates with the magnetic brush 31 to scrape off the metal particles adsorbed on the brush bristles. The metal particles fall into the hopper body 41 through the feed inlet 42 to complete the collection. At the same time, the baffle plate 32 at the end of the rotating drum 2 can prevent the material from overflowing. The non-metallic impurities that have not been adsorbed fall naturally under the action of gravity and the disturbance of the rotating drum 2 and are discharged outward through the discharge frame 33 at the lower end of the baffle plate 32, thus completing the impurity separation operation.

[0051] Step 3: The metal particles collected inside the bucket 41 are stably conveyed under the continuous rotation and pushing action of the built-in spiral blades 44. The material enters the pipe section 52 that penetrates the baffle plate 32 along the extension channel of the bucket 41, and is then conveyed by the spiral blades 44 that extend into the pipe section 52. The metal particles after the initial separation are smoothly sent into the magnetic sleeve 51 of the wind tunnel magnetic separator 5, providing a continuous and stable material supply for secondary purification and separation, while effectively avoiding material accumulation and blockage of the equipment channel.

[0052] Step 4: External purified airflow enters the cavity through the opening on one side of the support cylinder 1 corresponding to the magnetic sleeve 51, forming a through-flow field. The airflow carries dust and fine non-metallic impurities attached to the surface of the metal particles and guides them out through the air duct 54. At the same time, the baffle 55 at the lower end of the duct 52 blocks the airflow through the through hole 53, preventing the airflow from directly blowing on the material and causing metal particle loss. The magnetic sleeve 51 performs secondary adsorption and positioning of the metal particles, greatly improving the purity of metal material sorting.

[0053] Step 5: The magnetic sleeve 51 continues to rotate, and the high-purity metal particles adsorbed on its outer wall rotate accordingly. When they move to the position of the discharge hopper 6 mounted on the baffle plate 56, the scraper 62, which is in contact with the outer wall of the sleeve, scrapes the metal particles evenly into the hopper body 61. The conveying blades 63 inside the hopper body 61 continue to operate, directionally conveying the collected pure metal particles, and stably discharging them outward through the channel penetrating the baffle plate 56, realizing continuous, automated, and refined recycling of valuable metals from metallurgical solid waste.

[0054] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A solid waste recycling system for the metallurgical industry chain, comprising an inclined support cylinder (1), and a rotating cylinder (2) rotatably disposed inside the support cylinder (1), characterized in that: A metal separator (3) is installed inside the rotating drum (2). The metal separator (3) separates metal particles in solid waste by magnetic adsorption. The metal sorter includes magnetic brushes (31) evenly distributed in the circumference of the inner drum (2). The bristles of the magnetic brushes (31) have magnetic energy to adsorb metal particles in solid waste. A collection hopper (4) is provided inside the drum (2) to collect the metal particles adsorbed on the magnetic brushes (31).

2. The metallurgical industry chain solid waste recycling system according to claim 1, characterized in that: The magnetic brush (31) is arranged in an inclined spiral inside the rotating drum (2). When the rotating drum (2) rotates, the magnetic brush (31) is used to slow down the movement of solid waste and increase the residence time of solid waste in the rotating drum (2).

3. The metallurgical industry chain solid waste recycling system according to claim 2, characterized in that: The material hopper (4) includes a hopper body (41) located inside the rotating drum (2) on one side of the support cylinder (1). The hopper body (41) has a feed inlet (42) along its length and a scraper toothed plate (43) corresponding to the magnetic brush (31) is provided at the feed inlet (42). The scraper teeth at the end of the toothed plate are used to scrape off the metal particles on the magnetic brush (31), so that the metal particles enter the hopper (41) from the feed inlet (42).

4. The metallurgical industry chain solid waste recycling system according to claim 3, characterized in that: A baffle plate (32) is rotatably installed at one end of the rotating drum (2). The lower end of the baffle plate (32) is connected to a discharge frame (33). The lower end of the discharge frame (33) passes through the outside of the paper support cylinder (1). One end of the bucket body (41) passes through the baffle plate (32), and a spiral blade (44) is rotatably installed inside the bucket body (41).

5. A solid waste recycling system for the metallurgical industry chain according to claim 3, characterized in that: The support cylinder (1) is equipped with a wind tunnel magnetic separator (5) located on one side of the baffle plate (32). The wind tunnel magnetic separator (5) adsorbs the separated metal particles and then blows away the dust through the airflow. The wind tunnel magnetic separator (5) includes a magnetic sleeve (51) rotatably disposed inside the support cylinder (1). The magnetic sleeve (51) is located on one side of the baffle plate (32) and rotatably connected to it. The bucket body (41) passes through the outer end of the baffle plate (32) and is connected to a pipe section (52). The pipe section (52) extends into the magnetic sleeve (51), and the spiral blades (44) extend into the pipe section (52) simultaneously. The tube (52) has several evenly arranged through holes (53).

6. The metallurgical industry chain solid waste recycling system according to claim 4, characterized in that: The baffle plate (32) is provided with an air guide pipe (54), one end of which extends to the outside of the support cylinder (1).

7. A solid waste recycling system for the metallurgical industry chain according to claim 5, characterized in that: A baffle (55) is provided at the lower end of the tube (52). The baffle (55) is used to block the through hole (53) and prevent the airflow from blowing down the falling metal particles.

8. A solid waste recycling system for the metallurgical industry chain according to claim 5, characterized in that: A baffle (56) is provided on one side of the support cylinder (1), and a discharge hopper (6) located inside the magnetic sleeve (51) is provided on the baffle (56). The discharge hopper (6) is used to collect the metal particles adsorbed on the magnetic sleeve (51). The discharge hopper (6) includes a hopper body (61) set on a baffle plate (56). The hopper body (61) is located on the upper side inside the magnetic sleeve (51). A scraper (62) is set at the upper end of the hopper body (61). The scraper (62) is in close contact with the magnetic sleeve (51).

9. A solid waste recycling system for the metallurgical industry chain according to claim 8, characterized in that: One end of the bucket body (61) passes through the baffle plate (56), and a conveying blade (63) is rotatably installed inside the bucket body (61).

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