Magnetic separation and crushing device for waste steel slag

Abstract

The invention discloses a waste steel slag magnetic separation and crushing device, and belongs to the technical field of waste gas steel slag recovery, the waste steel slag magnetic separation and crushing device comprises a steel slag coarse crushing assembly, a particle adjusting structure and a steel slag fine crushing assembly, the particle adjusting structure is arranged between the steel slag coarse crushing assembly and the steel slag fine crushing assembly, and the steel slag coarse crushing assembly performs coarse crushing on steel slag blocks; the steel slag fine crushing assembly is used for performing fine crushing on the steel slag treated by the steel slag coarse crushing assembly, and the particle adjusting structure is connected with the steel slag fine crushing assembly. By arranging the particle adjusting structure and the steel slag fine crushing assembly, the crushing strength can be automatically adjusted during steel slag crushing, so that the crushing strength is kept in a constant range, and the particle size during magnetic separation is ensured while excessive crushing of steel slag particles is avoided; and the problem that the subsequent magnetic separation effect is affected due to the lack of the automatic adjustment capability of the crushing force during crushing of the existing crushing device is effectively solved.

Description

Technical Field

[0001] The invention belongs to the technical field of waste gas steel slag recovery, and specifically refers to a waste steel slag magnetic separation and crushing device. Background Art

[0002] Steel slag is a by-product produced during the steel production process. It is mainly composed of non-metallic parts in the slag and mixed metallic iron. When processing steel slag to recover valuable substances (such as metallic iron) in it, magnetic separation technology is usually used to separate the magnetic metal components. In order to effectively carry out magnetic separation, the steel slag needs to be broken into appropriate particle sizes to release metal particles and expose the metal particles wrapped in the slag so that the magnetic separator can better identify and separate them. However, if the particle size is too large during magnetic separation, it may affect the magnetic separation efficiency, because larger lumps may make it impossible to effectively separate the metal and non-metal parts, while if the particle size is too small, it may make it difficult to recover the metal powder and increase the processing cost;

[0003] Traditional crushing devices lack the ability to automatically adjust the crushing force during crushing. In the process of crushing steel slag particles, due to the influence of factors such as the difference in steel slag particle size and fluctuations in feeding speed, the particle size distribution of the crushed steel slag is wide, affecting the subsequent magnetic separation effect. Therefore, in order to be able to adjust the crushing force automatically during crushing and concentrate the steel slag particle size within a range suitable for magnetic separation, thereby improving the magnetic separation efficiency, a waste steel slag magnetic separation and crushing device is proposed. Summary of the invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a waste steel slag magnetic sorting and crushing device. By setting a particle adjustment structure and a steel slag fine crushing component, the crushing force can be automatically adjusted during steel slag crushing, so that the crushing force is kept within a constant range, avoiding excessive crushing of steel slag particles while ensuring the particle size during magnetic separation, effectively solving the problem that the current crushing device lacks the ability to automatically adjust the crushing force during crushing, affecting the subsequent magnetic separation effect.

[0005] The technical solution adopted by the present invention is as follows: The present invention proposes a waste steel slag magnetic sorting and crushing device, comprising a steel slag coarse crushing component, a particle adjustment structure and a steel slag fine crushing component, the particle adjustment structure is arranged between the steel slag coarse crushing component and the steel slag fine crushing component, the steel slag coarse crushing component coarsely crushes the steel slag blocks, and the steel slag fine crushing component finely crushes the steel slag processed by the steel slag coarse crushing component, and the particle adjustment structure is connected to the steel slag fine crushing component; the particle adjustment structure comprises an upper fixed plate fixed on the steel slag coarse crushing component, a lower fixed plate fixed on the steel slag fine crushing component, and an adjustment plate arranged between the upper fixed plate and the lower fixed plate; the steel slag fine crushing component comprises an eccentric cone rotating around a fixed axis and a fixed cone cooperating with the eccentric cone for extrusion, and the fixed cone is fixedly connected to the adjustment plate.

[0006] Furthermore, the particle adjustment structure also includes a pressure plate, an adjustment plate and a push plate, the adjustment plate is located between the pressure plate and the active bevel gear, a pressure spring is provided between the pressure plate and the adjustment plate, the push plate is fixedly connected to a support seat, the adjustment plate is fixedly connected to a top block, the top block is located above the support seat, an electromagnet 1 is installed on the push plate, and an electromagnet 2 is installed on the bottom of the adjustment plate. When the extrusion pressure in the slag fine crushing assembly is too large and causes the fixed cone to move with the adjustment plate, the pressure spring is compressed again, resulting in an increase in elastic force, but the distance between the electromagnets is far away from each other and the magnetic attraction force is weakened, so that the combined force of the elastic force and the magnetic attraction force can remain relatively stable, so that the crushing force of the slag fine crushing assembly can remain relatively constant, so that the particle size distribution after crushing is gathered, while also avoiding excessive crushing, thereby effectively improving the efficiency of magnetic separation.

[0007] Furthermore, the steel slag crushing assembly also includes a crushing barrel, a transmission shaft and a main shaft. The main shaft is rotatably connected to the inside of the crushing barrel. The eccentric cone is installed on the main shaft and rotates with the main shaft. A crushing chamber is provided in the fixed cone. The crushing chamber is used in conjunction with the eccentric cone. The eccentric cone pushes the steel slag to be crushed in the gap between the fixed cone and the eccentric cone.

[0008] Furthermore, a bracket is fixedly installed on the lower fixed plate, a first threaded rod is rotatably connected to the bracket, the push plate is threadedly connected to the first threaded rod, a second threaded rod is rotatably connected to the upper fixed plate, the second threaded rod is threadedly connected to the pressure plate, a guide frame is fixedly connected between the upper fixed plate and the lower fixed plate, the pressure plate, the adjustment plate and the push plate are all fixedly connected with a slider, and the slider is slidably connected to the guide frame.

[0009] Furthermore, the fine crushing barrel is rotatably connected to a transmission shaft, the transmission shaft is fixedly connected to a driving bevel gear, the main shaft is fixedly connected to a driven bevel gear, the driven bevel gear is meshed with the driving bevel gear, and a fine crushing motor is fixedly installed on the fine crushing barrel, and the fine crushing motor drives the transmission shaft to rotate.

[0010] Furthermore, the steel slag coarse crushing component includes a crushing box, a crushing roller and a crushing motor. The crushing roller is rotatably connected to the crushing box, one end of the crushing roller is fixedly connected to a synchronous gear, the crushing box is rotatably connected to a transmission idler wheel, and the transmission idler wheel is meshed with the synchronous gear. The steel slag coarse crushing component performs preliminary crushing on the steel slag to prevent the steel slag particles from entering the steel slag fine crushing component from being too large, thereby ensuring that the fine crushing component can work effectively and further ensuring the crushing effect.

[0011] Furthermore, the electromagnet 1 and the electromagnet 2 are both provided with multiple groups, and the electromagnet 1 and the electromagnet 2 are arranged to attract each other.

[0012] Furthermore, a particle-adjusting motor is installed on the bracket, and the particle-adjusting motor drives the first threaded rod to rotate. A voltage-adjusting motor is installed on the upper fixed plate, and the voltage-adjusting motor drives the second threaded rod to rotate.

[0013] Furthermore, the crushing box, synchronous gear and transmission idler wheel are symmetrically arranged in two groups, and the two groups of transmission idler wheels are meshed and connected. A pulley is fixedly connected to one group of synchronous gears, and a crushing motor is fixedly installed on the crushing box, and the output end of the crushing motor drives the pulley to rotate.

[0014] Furthermore, a collection box is fixedly connected to the bottom of the crushing box, a connecting frame is fixedly connected between the collection box and the fine crushing barrel, and the upper fixing plate is fixedly connected to the collection box.

[0015] The beneficial effects achieved by the present invention using the above structure are as follows:

[0016] (1) In order to be able to automatically adjust the crushing force of steel slag during crushing and avoid the problem that the particle size distribution of steel slag after crushing is wide and affects the efficiency of subsequent magnetic separation, the present invention provides a particle adjustment structure and a steel slag fine crushing component, which can automatically adjust the extrusion force during crushing to maintain a relatively constant crushing force, so that the particle size of the steel slag after crushing is relatively concentrated, thereby improving the recovery rate of valuable metals during magnetic separation, reducing resource waste, and improving economic benefits;

[0017] (2) The fixing force received by the adjustment plate is provided by the spring and the electromagnet. When the extrusion pressure in the slag crushing assembly is too large and causes the fixed cone to move with the adjustment plate, the pressure spring is compressed again, resulting in an increase in elastic force. However, the distance between the electromagnets is far away from each other, and the magnetic attraction is weakened. As a result, the combined force of the elastic force and the magnetic attraction can be kept relatively stable, so that the crushing force of the slag crushing assembly can be kept relatively constant, and the particle size distribution after crushing can be gathered. At the same time, over-crushing can be avoided, and the efficiency of magnetic separation can be effectively improved.

[0018] (3) The positions of the pressure plate and the push plate in the slag fine crushing assembly are adjustable, which can change the crushing particle size in the device and the trigger force of the particle adjustment structure, thereby adapting to various types of slag waste and magnetic separation devices;

[0019] (4) In addition, in order to maintain a stable particle size in the steel slag fine crushing component, the present invention provides a steel slag coarse crushing component to perform preliminary crushing of the steel slag, thereby preventing the steel slag particles entering the steel slag fine crushing component from being too large, thereby ensuring that the fine crushing component can work effectively and further ensuring the crushing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1A three-dimensional diagram of a magnetic separation and crushing device for waste steel slag proposed by the present invention;

[0021] Figure 2 This is a schematic diagram of the internal structure of a magnetic separation and crushing device for waste steel slag proposed by the present invention;

[0022] Figure 3 This is a partial structural schematic diagram of a waste steel slag magnetic separation and crushing device proposed by the present invention;

[0023] Figure 4 This is a schematic diagram of the structure of a particle adjustment structure of a waste steel slag magnetic separation and crushing device proposed by the present invention;

[0024] Figure 5 Schematic diagram of the explosion structure of the particle adjustment structure;

[0025] Figure 6 It is a partial schematic diagram of the particle regulation structure;

[0026] Figure 7 This is the internal structure diagram of the fixed cone;

[0027] Figure 8 This is a schematic diagram of the interior of the steel slag crushing assembly;

[0028] Fig. 9 This is a schematic structural diagram of a steel slag coarse crushing component of a waste steel slag magnetic separation and crushing device proposed by the present invention;

[0029] Fig.10 It is the transmission diagram of the slag coarse crushing assembly.

[0030] Among them, 1. Steel slag coarse crushing component; 2. Particle adjustment structure; 3. Steel slag fine crushing component; 4. Connecting frame; 101. Crushing box; 102. Crushing roller; 103. Synchronous gear; 104. Transmission idler; 105. Pulley; 106. Crushing motor; 107. Transmission belt; 108. Aggregate box; 201. Upper fixed plate; 202. Lower fixed plate; 203. Pressure plate; 204. Adjustment plate; 205. Push plate; 206. Guide frame; 207. Slider; 2 08. Pressure spring; 209. Support seat; 210. Top block; 211. First threaded rod; 212. Bracket; 213. Particle adjustment motor; 214. Second threaded rod; 215. Pressure adjustment motor; 216. Electromagnet 1; 217. Electromagnet 2; 301. Fine crushing barrel; 302. Eccentric cone; 303. Driven bevel gear; 304. Transmission shaft; 305. Active bevel gear; 306. Fine crushing motor; 307. Fixed cone; 308. Crushing chamber; 309. Main shaft.

[0031] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0033] In the description of the present invention, it should be understood that terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “top”, “bottom”, “inside” and “outside” indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0034] like Figure 1-Figure 10 As shown, the present invention proposes a waste steel slag magnetic separation and crushing device, including a steel slag coarse crushing component 1, a particle adjustment structure 2 and a steel slag fine crushing component 3, the particle adjustment structure 2 is arranged between the steel slag coarse crushing component 1 and the steel slag fine crushing component 3, the steel slag coarse crushing component 1 coarsely crushes the steel slag blocks, and the coarsely crushed steel slag passes through an aggregate box 108 and enters the steel slag fine crushing component 3, the steel slag fine crushing component 3 finely crushes the steel slag processed by the steel slag coarse crushing component 1, and the particle adjustment structure 2 is connected to the steel slag fine crushing component 3; the particle adjustment structure 2 includes an upper fixed plate fixed on the steel slag coarse crushing component 1 201, a lower fixed plate 202 fixed on the steel slag crushing component 3, and an adjusting plate 204 arranged between the upper fixed plate 201 and the lower fixed plate 202, the adjusting plate 204 can move between the upper fixed plate 201 and the lower fixed plate 202, and the steel slag crushing component 3 includes an eccentric cone 302 rotating around a fixed axis and a fixed cone 307 cooperating with the eccentric cone 302 for extrusion, the fixed cone 307 is fixedly connected to the adjusting plate 204, and the adjusting plate 204 can change the matching relationship between the fixed cone 307 and the eccentric cone 302 when it moves, so as to adjust the crushing force of the steel slag.

[0035] The particle regulating structure 2 further includes a pressure plate 203, an adjusting plate 204 and a push plate 205. The adjusting plate 204 is located between the pressure plate 203 and the active bevel gear 305. A pressure spring 208 is provided between the pressure plate 203 and the adjusting plate 204. Both ends of the pressure spring 208 are respectively fixedly connected to the pressure plate 203 and the adjusting plate 204. A support seat 209 is fixedly connected to the push plate 205. A top block 210 is fixedly connected to the adjusting plate 204. The top block 210 is located above the support seat 209. Under the elastic force of the pressure spring 208, the adjusting plate 204 is pressed on the push plate 205. At this time, the top block 210 is pressed on the support seat 209. There is an electromagnet 1 216, and an electromagnet 217 is installed at the bottom of the adjustment plate 204. The electromagnet 1 216 and the electromagnet 217 attract each other. At this time, under the combined action of the elastic force of the pressure spring 208 and the attraction of the electromagnet, the adjustment plate 204 is pressed and fixed on the push plate 205. A bracket 212 is fixedly installed on the lower fixed plate 202, and a first threaded rod 211 is rotatably connected to the bracket 212. The push plate 205 is threadedly connected to the first threaded rod 211. The upper fixed plate 201 is rotatably connected to the second threaded rod 214, and the second threaded rod 214 is threadedly connected to the pressure plate 203. The first threaded rod 211 and the second threaded rod 214 are both provided with a threaded locking structure. As shown, to prevent the thread from loosening during operation, a guide frame 206 is fixedly connected between the upper fixed plate 201 and the lower fixed plate 202, and a slide groove is arranged in the guide frame 206. The pressure plate 203, the adjustment plate 204, and the push plate 205 are all fixedly connected with a slider 207, and the slider 207 is slidably connected in the slide groove of the guide frame 206. Electromagnets 1 216 and electromagnets 217 are both provided with multiple groups, and multiple groups of electromagnets 1 216 are evenly arranged on the circumference of the push plate 205. The magnets 217 are evenly distributed on the circumference of the adjustment plate 204, and the electromagnets 1 216 and the electromagnets 217 are arranged to attract each other. A particle adjustment motor 213 is installed on the bracket 212, and the particle adjustment motor 21 3 drives the first threaded rod 211 to rotate, and a pressure regulating motor 215 is installed on the upper fixed plate 201. The pressure regulating motor 215 drives the second threaded rod 214 to rotate. The rotation of the first threaded rod 211 drives the push plate 205 to move up and down. When the adjusting plate 204 is pressed on the push plate 205, the position of the adjusting plate 204 is also lifted, thereby driving the distance between the fixed cone 307 and the eccentric cone 302 to change, thereby adjusting the size of the crushing outlet. When the second threaded rod 214 rotates, it drives the pressure plate 203 to move, so that the distance between the pressure plate 203 and the push plate 205 changes, so that the compression degree of the pressure spring 208 changes, thereby changing the triggering force of the particle adjustment structure 2.

[0036] In addition, the slag crushing component 3 also includes a crushing barrel 301, a transmission shaft 304 and a main shaft 309. The main shaft 309 is rotatably connected to the inside of the crushing barrel 301. The eccentric cone 302 is installed on the main shaft 309 and rotates with the main shaft 309. The axis of the eccentric cone 302 and the axis of the main shaft 309 are deviated from each other. A crushing chamber 308 is provided in the fixed cone 307. The fixed cone 307 and the main shaft 309 are coaxially arranged. The crushing chamber 308 is used in conjunction with the eccentric cone 302. The eccentric cone 302 pushes the slag to be crushed in the gap between the fixed cone 307 and the eccentric cone 302. Since the axis of the eccentric cone 302 and the axis of the main shaft 309 are deviated from each other, the gap between the eccentric cone 302 and the crushing chamber 308 It gradually decreases from top to bottom. When the main shaft 309 rotates, the eccentric cone 302 rotates with the main shaft 309. The relative position between the eccentric cone 302 and the crushing chamber 308 changes continuously. When the eccentric cone 302 and the crushing chamber 308 are close to each other, the materials between them are squeezed. When they are far away from each other, the materials are loosened and move further downward. The fine crushing barrel 301 is rotatably connected with the transmission shaft 304, and the driving bevel gear 305 is fixedly connected to the transmission shaft 304. The main shaft 309 is fixedly connected with the driven bevel gear 303, and the driven bevel gear 303 is meshed with the driving bevel gear 305. The fine crushing barrel 301 is fixedly installed with a fine crushing motor 306, and the fine crushing motor 306 drives the transmission shaft 304 to rotate;

[0037] In addition, the slag coarse crushing component 1 includes a crushing box 101, a crushing roller 102 and a crushing motor 106. The crushing roller 102 is rotatably connected to the crushing box 101. A feeding port is provided on the top of the crushing box 101. One end of the crushing roller 102 is fixedly connected to a synchronous gear 103. A transmission idler wheel 104 is rotatably connected to the crushing box 101. The transmission idler wheel 104 is meshed with the synchronous gear 103. The crushing box 101, the synchronous gear 103 and the transmission idler wheel 104 are symmetrically arranged in two groups, and the two groups of transmission idler wheels 104 are meshed with each other. A pulley 105 is fixedly connected to one set of synchronous gears 103, and a crushing motor 106 is fixedly installed on the crushing box 101. The output end of the crushing motor 106 drives the pulley 105 to rotate, and the crushing motor 106 drives the pulley 105 to rotate through a transmission belt 107, and the two synchronous gears 103 rotate synchronously in the opposite direction under the transmission action of the two transmission idler wheels 104, and then the two crushing rollers 102 rotate synchronously in the opposite direction, so as to preliminarily crush the incoming steel slag and preliminarily crush the large pieces of steel slag particles;

[0038] The bottom of the crushing box 101 is fixedly connected to the aggregate box 108, and the aggregate hopper is inside the aggregate box 108. The bottom of the aggregate hopper is connected to the middle of the fixed cone 307. A connecting frame 4 is fixedly connected between the aggregate box 108 and the fine crushing barrel 301. The bottom of the fine crushing barrel 301 is provided with a discharge port, and the upper fixed plate 201 is fixedly connected to the aggregate box 108.

[0039] Specific use and working principle: when the waste steel slag is crushed before magnetic separation, the waste steel slag is first fed into the equipment from the feeding port at the top of the steel slag coarse crushing component 1 through the feeding device, and the crushing motor 106 drives the two sets of crushing rollers 102 to rotate through the transmission belt 107, and under the transmission action of two sets of symmetrically arranged transmission idler wheels 104 and synchronous gears 103, the two sets of crushing rollers 102 can rotate synchronously in opposite directions, thereby preliminarily crushing the input waste steel slag;

[0040] The crushed slag enters the collecting bucket in the collecting box 108 and then enters the fixed cone 307. The output end of the fine crushing motor 306 drives the main shaft 309 to rotate through the transmission shaft 304 and the driving bevel gear 305, thereby driving the eccentric cone 302 to rotate eccentrically around the main shaft 309. The eccentric cone 302 cooperates with the fixed cone 307 to finely crush the slag. The finely crushed slag is discharged from the discharge port at the bottom of the fine crushing barrel 301.

[0041] Under the combined effect of the elastic force of the pressure spring 208 and the magnetic attraction of the electromagnet 1 216 and the electromagnet 217, the adjustment plate 204 is pressed on the push plate 205, so that the position of the fixed cone 307 can be kept fixed. In the process of fine crushing, when the extrusion force between the eccentric cone 302 and the fixed cone 307 is too large, the fixed cone 307 drives the adjustment plate 204 to move upward together. At this time, the slider 207 on the circumference of the adjustment plate 204 slides in the slide groove of the guide frame 206, and the pressure spring 208 is pressed. The contraction causes the elastic force of the pressure spring 208 to increase. At the same time, the distance between the electromagnet 1 216 and the electromagnet 2 217 is farther away from each other, which weakens the magnetic attraction. This can compensate for the increased spring force, so that the combined force of the elastic force and the magnetic attraction remains relatively stable, thereby allowing the fixed cone 307 and the eccentric cone 302 to maintain a constant crushing force, thereby preventing the slag particles from being over-crushed due to excessive squeezing pressure. At the same time, the particle size and uniformity of the slag after crushing can be maintained, which is beneficial to the subsequent magnetic separation efficiency.

[0042] The above is the overall workflow of the present invention.

[0043] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0044] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

[0045] The present invention and its embodiments are described above, and such description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the present invention.

Claims

1. A magnetic separation and crushing device for waste steel slag, characterized by: The invention comprises a steel slag coarse crushing component (1), a particle adjustment structure (2) and a steel slag fine crushing component (3), wherein the particle adjustment structure (2) is arranged between the steel slag coarse crushing component (1) and the steel slag fine crushing component (3), the steel slag coarse crushing component (1) performs coarse crushing on steel slag blocks, the steel slag fine crushing component (3) performs fine crushing on steel slag processed by the steel slag coarse crushing component (1), and the particle adjustment structure (2) is connected to the steel slag fine crushing component (3); The particle adjustment structure (2) comprises an upper fixing plate (201) fixed on the steel slag coarse crushing component (1), a lower fixing plate (202) fixed on the steel slag fine crushing component (3), and an adjustment plate (204) provided between the upper fixing plate (201) and the lower fixing plate (202); The steel slag fine crushing component (3) comprises an eccentric cone (302) rotating around a fixed axis and a fixed cone (307) cooperating with the eccentric cone (302) for extrusion, wherein the fixed cone (307) is fixedly connected to the adjustment plate (204).

2. The waste steel slag magnetic separation and crushing device according to claim 1, characterized in that: The particle regulating structure (2) further comprises a pressure plate (203), an adjusting plate (204) and a push plate (205); the adjusting plate (204) is located between the pressure plate (203) and the active bevel gear (305); a pressure spring (208) is provided between the pressure plate (203) and the adjusting plate (204); a support seat (209) is fixedly connected to the push plate (205); a top block (210) is fixedly connected to the adjusting plate (204); the top block (210) is located above the support seat (209); an electromagnet 1 (216) is installed on the push plate (205); and an electromagnet 2 (217) is installed at the bottom of the adjusting plate (204).

3. The waste steel slag magnetic separation and crushing device according to claim 2, characterized in that: The steel slag fine crushing assembly (3) further comprises a fine crushing barrel (301), a transmission shaft (304) and a main shaft (309); the main shaft (309) is rotatably connected to the inside of the fine crushing barrel (301); the eccentric cone (302) is mounted on the main shaft (309) and rotates along with the main shaft (309); a crushing chamber (308) is provided in the fixed cone (307); the crushing chamber (308) is used in conjunction with the eccentric cone (302); the eccentric cone (302) pushes the steel slag to be crushed in the gap between the fixed cone (307) and the eccentric cone (302).

4. The waste steel slag magnetic separation and crushing device according to claim 3, characterized in that: A bracket (212) is fixedly mounted on the lower fixed plate (202), a first threaded rod (211) is rotatably connected to the bracket (212), the push plate (205) is threadedly connected to the first threaded rod (211), a second threaded rod (214) is rotatably connected to the upper fixed plate (201), the second threaded rod (214) is threadedly connected to the pressure plate (203), a guide frame (206) is fixedly connected between the upper fixed plate (201) and the lower fixed plate (202), and a slider (207) is fixedly connected to the pressure plate (203), the adjustment plate (204) and the push plate (205), and the slider (207) is slidably connected to the guide frame (206).

5. The magnetic separation and crushing device for waste steel slag according to claim 4 is characterized by: The fine crushing barrel (301) is rotatably connected to a transmission shaft (304), a driving bevel gear (305) is fixedly connected to the transmission shaft (304), a driven bevel gear (303) is fixedly connected to the main shaft (309), the driven bevel gear (303) is meshingly connected to the driving bevel gear (305), and a fine crushing motor (306) is fixedly mounted on the fine crushing barrel (301), the fine crushing motor (306) drives the transmission shaft (304) to rotate.

6. The magnetic separation and crushing device for waste steel slag according to claim 5, characterized in that: The steel slag coarse crushing assembly (1) comprises a crushing box (101), a crushing roller (102) and a crushing motor (106); the crushing roller (102) is rotatably connected to the crushing box (101); one end of the crushing roller (102) is fixedly connected to a synchronous gear (103); the crushing box (101) is rotatably connected to a transmission idler wheel (104); the transmission idler wheel (104) is meshingly connected to the synchronous gear (103).

7. The waste steel slag magnetic separation and crushing device according to claim 6, characterized in that: The electromagnet 1 (216) and the electromagnet 2 (217) are both provided in multiple groups, and the electromagnet 1 (216) and the electromagnet 2 (217) are arranged to attract each other.

8. The magnetic separation and crushing device for waste steel slag according to claim 7, characterized in that: A particle-adjusting motor (213) is mounted on the bracket (212), and the particle-adjusting motor (213) drives the first threaded rod (211) to rotate. A voltage-adjusting motor (215) is mounted on the upper fixed plate (201), and the voltage-adjusting motor (215) drives the second threaded rod (214) to rotate.

9. The waste steel slag magnetic separation and crushing device according to claim 8, characterized in that: The crushing box (101), the synchronous gear (103) and the transmission idler wheel (104) are symmetrically arranged in two groups, and the two groups of transmission idler wheels (104) are meshed and connected. A pulley (105) is fixedly connected to one group of the synchronous gears (103). A crushing motor (106) is fixedly installed on the crushing box (101), and the output end of the crushing motor (106) drives the pulley (105) to rotate.

10. The waste steel slag magnetic separation and crushing device according to claim 9, characterized in that: A material collection box (108) is fixedly connected to the bottom of the crushing box (101), a connecting frame (4) is fixedly connected between the material collection box (108) and the fine crushing barrel (301), and the upper fixing plate (201) is fixedly connected to the material collection box (108).

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