A kaolinite-type coal gangue iron removal device

Abstract

This invention provides an iron removal device for kaolinite-type coal gangue. The device includes a placement box, a guide cylinder fixedly installed at the bottom of the placement box, a connecting box fixedly installed at the bottom of the guide cylinder, and support legs fixedly installed at both ends of the placement box. The support legs and the connecting box are fixedly connected by fixing blocks. A crushing component is arranged on the upper inner side of the placement box, and a screening mechanism is arranged on the upper inner side of the connecting box. The screening mechanism and the crushing component are interconnected by a belt. The screening mechanism includes a rotating shaft. Placement blocks are fixedly installed in the middle of the upper part of the inner wall of the connecting box. The rotating shaft is rotatably positioned between two placement blocks. A rotating wheel is fixedly installed at one end of the rotating shaft, and several magnetic meshes are fixedly installed on the outer side of the rotating shaft. The iron removal device for kaolinite-type coal gangue provided by this invention has the advantages of convenient use, good environmental protection, and high iron removal efficiency.

Description

Technical Field

[0001] This invention relates to the field of iron removal technology for coal gangue, and more particularly to an iron removal device for kaolinite-type coal gangue. Background Technology

[0002] Coal gangue is a solid waste generated during coal mining, washing, and processing. It is a hard rock with low carbon content. Coal gangue has a complex composition, low utilization rate, and low added value. Minerally, coal gangue is a sedimentary rock composed of various minerals. In terms of the ratio of organic to inorganic matter, coal gangue has a low organic matter content and a high inorganic matter content; the inorganic matter content increases as the carbon content decreases. Regarding the composition of metallic and non-metallic elements, most metallic and non-metallic elements in coal gangue exist in oxide form, with SiO2 and Al2O3 being the most abundant. Although coal gangue is currently widely used in power generation, roadbeds, brick making, landfill lining materials, cement, and concrete production, its low added value and the generally long distance from the target market significantly limit its utilization.

[0003] Coal-series kaolinite is an important non-metallic mineral resource associated with coal. my country possesses abundant kaolinite resources in the interbeds or roof and floor of Carboniferous-Permian coal seams, which can be used in construction, printing and dyeing, plastics, chemical electronics, agriculture, and refractory materials industries after development. Currently, coal-series kaolinite resources are not mined separately but are extracted along with coal during the coal mining process as interbedded gangue. These are then processed in coal preparation plants, partly by manual sorting. Because kaolinite has a similar density to coal gangue and is often adhering to coal dust, it is difficult to distinguish kaolinite by appearance. Consequently, most coal preparation plants do not separate kaolinite, treating it as coal gangue waste along with other gangue, which pollutes the environment and wastes resources. Developing and utilizing coal gangue not only saves land but also consumes mine waste and reduces environmental pollution. Coal gangue with kaolinite as its main component can be called kaolinite-type coal gangue, which has high development and utilization value. Iron is an important factor affecting the high-value utilization of kaolinite-type coal gangue, and iron removal is required when developing and utilizing it.

[0004] Application document CN202729091U discloses a device for transporting and removing iron from coal gangue, including a support frame, a belt feeding mechanism mounted on the support frame, a slide block slidably mounted on the support frame above the belt feeding mechanism, a cylinder mounted at the lower end of the slide block, an electromagnet mounted at the piston rod end of the cylinder facing the belt, and a receiving groove provided between the electromagnet and the belt feeding mechanism. The distance between the electromagnet and the belt is controlled by the cylinder to achieve the best adsorption force and remove iron. However, when using a single electromagnet to adsorb iron on the material, the material powder is easily adsorbed onto the electromagnet along with the iron, causing the electromagnet to be completely covered by iron and material powder during the adsorption process, resulting in a decrease in the electromagnet's attraction force and poor subsequent adsorption effect on iron, thus affecting the iron removal effect of kaolinite-type coal gangue.

[0005] Therefore, it is necessary to provide a kaolinite-type coal gangue iron removal device to solve the above-mentioned technical problems. Summary of the Invention

[0006] The technical problem solved by this invention is to provide a kaolin-type coal gangue iron removal device that is easy to use, environmentally friendly, and has high iron removal efficiency.

[0007] To solve the above-mentioned technical problems, the present invention provides an iron removal device for kaolinite-type coal gangue, including a placement box, a guide cylinder fixedly installed at the bottom of the placement box, a connecting box fixedly installed at the bottom of the guide cylinder, support legs fixedly installed at both ends of the placement box, the support legs and the connecting box being fixedly connected by a fixing block, a crushing component being provided on the upper inner side of the placement box, a screening mechanism being provided on the upper inner side of the connecting box, and the screening mechanism and the crushing component being connected to each other by a belt.

[0008] The screening mechanism includes a rotating shaft. Placement blocks are fixedly installed on the upper center of the inner wall of the connecting box. The rotating shaft is rotatably positioned between two placement blocks. A rotating wheel is fixedly installed at one end of the rotating shaft. Several magnetic meshes are fixedly installed on the outer side of the rotating shaft. Fixed disks are fixedly installed on both sides of the placement blocks on the upper wall of the connecting box. A placement shaft is rotatably positioned between two fixed disks. Adsorption plates are fixedly installed on the outer side of both placement shafts. Both the adsorption plates and placement shafts are electromagnets. The adsorption plates and magnetic meshes have the same width. The magnetic attraction of the adsorption plates and placement shafts is greater than the magnetic attraction of the magnetic meshes. The adsorption plates and magnetic meshes mesh with each other.

[0009] Preferably, the crushing component includes a connecting shaft 1, which is rotatably disposed on the upper side inside the placement box. A crushing roller 2 is fixedly installed on the outer side of the connecting shaft 1. A rotating wheel 2 is fixedly installed at one end of the connecting shaft 1. A connecting shaft 2 is rotatably disposed on one side of the connecting shaft 1 inside the placement box. A crushing roller 1 is fixedly installed on the outer side of the connecting shaft 2. The crushing roller 1 and the crushing roller 2 mesh with each other. A rotating wheel 3 is fixedly installed at one end of the connecting shaft 2. A motor is installed on one side of the rotating wheel 3. A fixing plate is fixedly installed on one side of the placement box. A support plate is fixedly installed on one side of the motor. The motor is fixedly mounted on the fixing plate through the support plate. A belt is sleeved on the outer side of the rotating wheels 1, 2, and 3.

[0010] Preferably, a protective cover is provided above the placement box, a feeding hopper is fixedly installed on one side of the protective cover, and a feeding port is opened on one side of the feeding hopper.

[0011] Preferably, a collecting plate is fixedly installed below the first and second crushing rollers inside the placement box. The collecting plate is arc-shaped and has several discharge holes at its bottom. A filter plate is provided below the collecting plate inside the placement box.

[0012] Preferably, a placement groove is provided below the material collection plate on the placement box. The placement groove is inclined, and limit grooves are provided on both sides of the placement groove. The filter plate is inclinedly inserted into the inner side of the placement groove. Limit blocks are fixedly installed on both sides of the filter plate. The limit blocks are inserted into the inner side of the limit groove. The filter plate is fixedly installed in the inner side of the placement groove by the limit blocks. One side of the filter plate is higher than the other side. A discharge port is provided at the low position of the filter plate on one side of the placement box. The discharge port is inclined, and the bottom of the discharge port and the upper surface of the filter plate are on the same plane.

[0013] Preferably, a cleaning component is provided on the side of the protective cover opposite to the feeding hopper; the cleaning component includes an air extraction nozzle, which is fixedly installed on one side of the protective cover. Several air extraction pipes are fixedly installed on one side of the air extraction nozzle. A connecting pipe is fixedly installed at one end of the air extraction pipe, and a guide pipe is fixedly installed at one end of the connecting pipe. An air extraction machine is fixedly installed in the middle of the outer side of the guide pipe. A filter box is provided at the end of the guide pipe. Several filter screens are fixedly installed inside the filter box. Several exhaust holes are opened on the end of the filter box opposite to the guide pipe.

[0014] Preferably, guide plates are fixedly installed on both sides below the screening mechanism inside the connecting box, and protective plates are fixedly installed on the bottom of the two guide plates. A second guide trough is formed between the two protective plates. A first discharge pipe is fixedly installed on one side below the connecting box. The second guide trough and the first discharge pipe are interconnected. A collection chamber is opened on one of the protective plates. A first guide trough is provided on one side of the second guide trough inside the connecting box. The first guide trough and the collection chamber are interconnected. A second discharge pipe is fixedly installed on one side of the first discharge pipe below the connecting box. The second discharge pipe is interconnected with the first guide trough. A blower is provided on the other protective plate.

[0015] Preferably, a collection box is provided below the discharge pipe, and a liquid injection port is provided on one side of the collection box.

[0016] Preferably, the blower includes an air outlet, which is fixedly mounted on the protective plate. The air outlet of the air outlet is positioned opposite to the collection chamber. Several air outlet pipes are fixedly mounted on one side of the air outlet. An air blowing pipe is fixedly mounted on one end of each air outlet pipe, and an air blower is fixedly mounted on one side of each air blowing pipe.

[0017] A method for removing iron from kaolinite-type coal gangue using an iron removal device as described in any one of claims 1-9, comprising the following steps:

[0018] Step 1: Crush the coal gangue. The coal gangue is fed into the crushing unit through the feeding hopper. Then the motor works, and the output end rotates to drive the three-wheeled roller on one side to rotate. Through the belt connection, the two-wheeled roller on the other side rotates, so that the crushing roller one and the crushing roller two cooperate to crush the coal gangue.

[0019] Step 2: The crushed coal gangue will fall onto the collecting plate and then onto the filter plate through the drop holes. The filter plate is set at an incline. During the falling process, the crushed raw material will move on the filter plate, which will screen the material. Larger particles will be discharged through the discharge port for further crushing.

[0020] Step 3: The screened material falls onto the screening mechanism through the guide cylinder. Simultaneously, the motor drives the first and second crushing rollers to rotate via the belt, which in turn drives the first rotating wheel to rotate. The rotation of the first rotating wheel drives the connecting shaft on one side to rotate, thereby driving the outer magnetic mesh to screen the falling material. During screening, the magnetic mesh will adsorb the iron substances carried in the material. As the magnetic mesh rotates, it will drive the adsorption plates on both sides to rotate. The adsorption plates are made of strong electromagnets, and the adsorption force is greater than the magnetic mesh's attraction force, thus enabling the iron substances on the magnetic mesh to be transferred to the adsorption plates. At the same time, due to the contact between the magnetic mesh and the adsorption plates during the movement, the material powder on the adsorbed iron substances falls off.

[0021] Step 4: The iron-removed material falls through the guide plate to the inside of the protective plate. Then, the blower on one side operates, blowing the falling material through the nozzle. Fine particles are blown into the collection chamber and discharged through the second discharge pipe for direct use, while larger particles fall through the second guide chute to the inside of the first discharge pipe and into the collection box. After completion, chemical liquid is injected into the collection box for further iron removal.

[0022] Step 5: During the iron removal process, the cleaning unit located at the top works, and the exhaust fan draws out the smoke and dust generated inside the device through the exhaust nozzle. The smoke and dust are drawn into the filter box, thereby filtering the smoke and dust.

[0023] Compared with related technologies, the iron removal device for kaolinite-type coal gangue provided by the present invention has the following beneficial effects:

[0024] This invention provides an iron removal device for kaolinite-type coal gangue. Through a belt connection, a motor drives two crushing rollers to rotate, simultaneously rotating a rotating wheel. The rotation of the rotating wheel causes a connecting shaft on one side to rotate, thereby causing an outer magnetic mesh to screen the falling material. During screening, the magnetic mesh adsorbs iron substances carried in the material. The rotation of the magnetic mesh drives the adsorption plates on both sides to rotate. The adsorption plates are made of powerful electromagnets, with an adsorption force greater than that of the magnetic mesh. This allows the iron substances on the magnetic mesh to transfer to the adsorption plates. Simultaneously, during the movement, the contact between the magnetic mesh and the adsorption plates causes the powdered material on the adsorbed iron substances to fall off. This prevents the material powder and iron from being contaminated with the electromagnet, causing it to be completely covered by iron and material powder, resulting in reduced electromagnet adsorption and poor subsequent iron adsorption. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the first embodiment of the iron removal device for kaolinite-type coal gangue provided by the present invention;

[0026] Figure 2 This is a schematic diagram of the iron removal device for kaolinite-type coal gangue provided by the present invention from another perspective.

[0027] Figure 3 This is a schematic diagram of the internal structure of the iron removal device for kaolinite-type coal gangue provided by the present invention.

[0028] Figure 4 for Figure 3 The diagram shows the crushing component.

[0029] Figure 5 This is a schematic diagram of the filter screen installation structure in the kaolinite-type coal gangue iron removal device provided by the present invention.

[0030] Figure 6This is a partial structural diagram of the iron removal device for kaolinite-type coal gangue provided by the present invention;

[0031] Figure 7 for Figure 6 The diagram shown is a schematic of the screening mechanism.

[0032] Figure 8 for Figure 1 The diagram shows the installation structure of the air blowing component;

[0033] Figure 9 This is a schematic diagram of the installation structure of the limiting block in the iron removal device for kaolinite-type coal gangue provided by the present invention.

[0034] Numbered components in the diagram: 1. Placement box; 2. Feed hopper; 3. Protective cover; 4. Cleaning component; 401. Air extraction nozzle; 402. Air extraction pipe; 403. Connecting pipe; 404. Air extraction fan; 405. Filter box; 406. Exhaust port; 407. Conduit; 5. Motor; 6. Belt; 7. Connecting box; 8. Collection box; 9. Blowing component; 901. Air blower; 902. Air blowing pipe; 903. Air outlet pipe; 904. Air outlet; 10. Discharge port; 11. Guide cylinder; 12. Discharge pipe one; 13. Discharge pipe two; 14. Support leg; 15. 16. Fixed block; 17. Crushing roller one; 18. Rotating wheel one; 19. Rotating wheel two; 20. Connecting shaft one; 21. Rotating wheel three; 22. Crushing roller two; 23. Fixed plate; 24. Support plate; 25. Connecting shaft two; 26. Placement groove; 27. Limiting groove; 28. Collecting plate; 29. ​​Discharge hole; 30. Filter plate; 31. Placement block; 32. Rotating shaft; 33. Placement shaft; 34. Magnetic mesh; 35. Adsorption plate; 36. Guide plate; 37. Protective plate; 38. Collection chamber; 39. Guide groove one; 40. Guide groove two; 41. Limiting block. Detailed Implementation

[0035] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0036] First Embodiment

[0037] Please refer to the following: Figures 1-9In the first embodiment of the present invention, the iron removal device for kaolinite-type coal gangue includes a placement box 1. A guide cylinder 11 is fixedly installed at the bottom of the placement box 1 for connecting the placement box 1 and a connecting box 7. The connecting box 7 is fixedly installed at the bottom of the guide cylinder 11. Support legs 14 are fixedly installed at both ends of the placement box 1 to support the placement box 1 and the connecting box 7. The support legs 14 and the connecting box 7 are fixedly connected by a fixing block 15. A crushing component is provided on the upper inner side of the placement box 1 for crushing the material. The crushing component includes a connecting shaft 19, which is rotatably disposed on the upper inner side of the placement box 1. A crushing roller 21 is fixedly installed on the outer side of the connecting shaft 19. A rotating wheel 18 is fixedly installed at one end of the connecting shaft 19. A connecting shaft 24 is rotatably disposed on one side of the connecting shaft 19 inside the placement box 1. A crushing roller 16 is fixedly installed on the outside of the connecting shaft 24. The crushing roller 16 and the crushing roller 21 mesh with each other. A rotating wheel 3 is fixedly installed on one end of the connecting shaft 24. A motor 5 is installed on one side of the rotating wheel 3. A fixing plate 22 is fixedly installed on one side of the placement box 1 to fix the motor 5. A support plate 23 is fixedly installed on one side of the motor 5. The motor 5 is fixedly installed on the fixing plate 22 through the support plate 23. The belt 6 is sleeved on the outside of the rotating wheel 1, rotating wheel 2 and rotating wheel 3 to crush the coal gangue. The coal gangue is fed into the crushing part through the feeding hopper 2. Then the motor 5 works, and the output end rotates to drive the rotating wheel 3 20 at one end to rotate. It is connected to the rotating wheel 2 18 on one side through the belt 6, so that the crushing roller 16 and the crushing roller 21 cooperate to crush the coal gangue.

[0038] A protective cover 3 is installed above the placement box 1. A feeding hopper 2 is fixedly installed on one side of the protective cover 3, which facilitates the feeding of materials to be crushed. A feed inlet is opened on one side of the feeding hopper 2. A cleaning component 4 is installed on the protective cover 3 on the side opposite to the feeding hopper 2, which plays a good role in purifying the generated smoke and dust. The cleaning component 4 includes an exhaust nozzle 401, which is fixedly installed on one side of the protective cover 3. Several exhaust pipes 402 are fixedly installed on one side of the exhaust nozzle 401. A connecting pipe 403 is fixedly installed at one end of the exhaust pipe 402. A connecting pipe 403 is fixedly installed at one end of the connecting pipe 403. There is a conduit 407, and an exhaust fan 404 is fixedly installed on the middle of the outer side of the conduit 407. A filter box 405 is provided at the end of the conduit 407. Several filter screens are fixedly installed on the inner side of the filter box 405. Several exhaust holes 406 are opened on the end of the filter box 405 opposite to the conduit 407. During the iron removal process, the cleaning component 4 located at the top works. The exhaust fan draws out the smoke and dust generated inside the device through the exhaust nozzle 401. The smoke and dust are drawn into the filter box 405, thereby filtering the smoke and dust. After filtration, the filter screens inside the filter box 405 can be disassembled and replaced.

[0039] A collecting plate 27 is fixedly installed below the first crushing roller 16 and the second crushing roller 21 inside the placement box 1. The collecting plate 27 is arc-shaped and has several discharge holes 28 at its bottom. A filter plate 29 is installed below the collecting plate 27 inside the placement box 1. A placement groove 25 is provided below the collecting plate 27 in the placement box 1. The placement groove 25 is inclined and has limit grooves 26 on both sides. The filter plate 29 is inclinedly inserted into the inside of the placement groove 25. Limit blocks 40 are fixedly installed on both sides of the filter plate 29 and are inserted into the limit grooves 26. The filter plate 29 passes through the limit blocks 40. The position block 40 is fixedly installed inside the placement groove 25. One side of the filter plate 29 is higher than the other side. A discharge port 10 is opened at the low position of the filter plate 29 on one side of the placement box 1. The discharge port 10 is inclined. The bottom of the discharge port 10 and the upper surface of the filter plate 29 are on the same plane. The crushed coal gangue will fall onto the collection plate 27 and fall onto the filter plate 29 through the drop hole. The filter plate 29 is inclined. During the falling process, the crushed raw material will move on the filter plate 29. The filter plate 29 will screen the material. The larger particles will be discharged through the discharge port 10 for further crushing.

[0040] A screening mechanism is provided on the upper inner side of the connecting box 7, and the screening mechanism and the crushing component are connected to each other by a belt 6. The screening mechanism includes a rotating shaft 31. Placement blocks 30 are fixedly installed on the upper center of the inner wall of the connecting box 7. The rotating shaft 31 is rotatably positioned between two placement blocks 30. A rotating wheel is fixedly installed at one end of the rotating shaft 31, and several magnetic meshes 33 are fixedly installed on the outer side of one side of the rotating shaft 31. Fixed disks are fixedly installed on both sides of the placement blocks 30 on the upper inner wall of the connecting box 7. A placement shaft 32 is rotatably positioned between two of the fixed disks. Adsorption plates 34 are fixedly installed on the outer side of both placement shafts 32. Both the adsorption plates 34 and the placement shafts 32 are electromagnets. The adsorption plates 34 and the magnetic meshes 33 have the same width, and the magnetic attraction of the adsorption plates 34 and the placement shafts 32 is greater than the magnetic attraction of the magnetic meshes 33. The adsorption plate 34 and the magnetic mesh 33 mesh with each other. Specifically, the screened material falls into the screening mechanism through the guide cylinder 11. At the same time, through the connection of the belt 6, the motor 5 drives the crushing roller 16 and the crushing roller 21 to rotate, which in turn drives the rotating wheel 17 to rotate. When the rotating wheel 17 rotates, it drives the connecting shaft on one side to rotate, thereby driving the outer magnetic mesh 33 to screen the falling material. During screening, the magnetic mesh 33 adsorbs the iron substances carried in the material. When the magnetic mesh 33 rotates, it drives the adsorption plates 34 on both sides to rotate. The adsorption plates 34 are made of strong electromagnets, and the adsorption force is greater than the magnetic mesh 33, so that the iron substances on the magnetic mesh 33 can be transferred to the adsorption plates 34. At the same time, during the movement, due to the contact between the magnetic mesh 33 and the adsorption plates 34, the material powder on the adsorbed iron substances falls off.

[0041] Inside the connecting box 7, guide plates 35 are fixedly installed on both sides below the screening mechanism. Protective plates 36 are fixedly installed at the bottom of each guide plate 35, forming a guide trough 39 between the two protective plates 36. A discharge pipe 12 is fixedly installed on one side of the lower part of the connecting box 7. The guide trough 39 and the discharge pipe 12 are interconnected. A collection chamber 37 is opened on one of the protective plates 36. A guide trough 38 is provided on one side of the guide trough 39 inside the connecting box 7, and the guide trough 38 and the collection chamber 37 are interconnected. A discharge pipe 13 is fixedly installed on one side of the discharge pipe 12 below the connecting box 7, and the discharge pipe 13 is interconnected with the guide trough 38. A blower 9 is provided on the other protective plate 36, including an air outlet 904, which is fixedly installed on the protective plate 36 for air discharge. The air outlet of nozzle 904 is positioned opposite to the collection chamber 37. Several air outlet pipes 903 are fixedly installed on one side of the air outlet 904. An air blowing pipe 902 is fixedly installed at one end of the air outlet pipe 903. An air blower 901 is fixedly installed on one side of the air blowing pipe 902. The material after iron removal will fall into the inner side of the protective plate 36 through the guide plate 35. Then, the blower 9 located on one side will work to blow the falling material through the air outlet. Fine particles will enter the collection chamber 37 through the blowing and be discharged through the discharge pipe 13 for direct use. Larger particles will fall into the inner side of the discharge pipe 12 through the guide trough 39 and fall into the collection box 8. Chemical liquid will be injected into the collection box 8 for further iron removal. The collection box 8 is located below the discharge pipe 12, and a liquid injection port is located on one side of the collection box 8.

[0042] The working principle of the kaolinite-type coal gangue iron removal device provided by this invention is as follows:

[0043] Step 1: Crush the coal gangue. The coal gangue is fed into the crushing unit through the feeding hopper 2. Then the motor 5 works and the output end rotates to drive the three-wheeled wheel 20 at one end to rotate. It is connected to the belt 6 to drive the two-wheeled wheel 18 on the other side to rotate, so that the crushing roller 16 and the crushing roller 21 cooperate to crush the coal gangue.

[0044] The crushed coal gangue falls onto the collecting plate 27 and then onto the filter plate 29 through the drop hole. The filter plate 29 is inclined, and the crushed raw material moves on the filter plate 29 during the falling process. The filter plate 29 then screens the material, and larger particles are discharged through the discharge port 10 for further crushing.

[0045] After screening, the material falls into the screening mechanism through the guide cylinder 11. Simultaneously, through the connection of the belt 6, the motor 5 drives the first crushing roller 16 and the second crushing roller 21 to rotate, which in turn drives the first rotating wheel 17 to rotate. When the first rotating wheel 17 rotates, it drives the connecting shaft on one side to rotate, thereby driving the outer magnetic mesh 33 to screen the falling material. During screening, the magnetic mesh 33 will adsorb the iron substances carried in the material. When the magnetic mesh 33 rotates, it will drive the adsorption plates 34 on both sides to rotate. The adsorption plates 34 are made of strong electromagnets, and the adsorption force is greater than the magnetic mesh 33, so that the iron substances on the magnetic mesh 33 can be transferred to the adsorption plates 34. At the same time, during the movement, due to the contact between the magnetic mesh 33 and the adsorption plates 34, the material powder on the adsorbed iron substances falls off.

[0046] After iron removal, the material falls through the guide plate 35 to the inside of the protective plate 36. Then, the blower 9 located on one side works, blowing the falling material through the nozzle. Fine particles are blown into the collection chamber 37 and discharged through the discharge pipe 13 for direct use. Larger particles fall through the guide trough 39 to the inside of the discharge pipe 12 and into the collection box 8. After completion, chemical liquid is injected into the collection box 8 for further iron removal.

[0047] Step 2: During the iron removal process, the cleaning component 4 located at the top works, and the exhaust fan extracts the smoke and dust generated inside the device through the exhaust nozzle 401. The smoke and dust are drawn into the filter box 405, thereby filtering the smoke and dust. After filtration, the filter screen inside the filter box 405 can be disassembled and replaced.

[0048] Compared with related technologies, the kaolinite-type coal gangue iron removal device provided by the present invention has the following beneficial effects: When the motor 5 drives the first crushing roller 16 and the second crushing roller 21 to rotate through the connection of the belt 6, it will also drive the first rotating wheel 17 to rotate. When the first rotating wheel 17 rotates, it will drive the connecting shaft on one side to rotate, thereby driving the outer magnetic mesh 33 to screen the falling material. During screening, the magnetic mesh 33 will adsorb the iron substances carried in the material. When the magnetic mesh 33 rotates, it will drive the adsorption plates 34 on both sides to rotate. The adsorption plates 34 are made of strong electromagnets, and the adsorption force is greater than that of the magnetic mesh 33. Thus, the iron substances on the magnetic mesh 33 can be transferred to the adsorption plates 34. At the same time, during the movement, due to the contact between the magnetic mesh 33 and the adsorption plates 34, the material powder on the adsorbed iron substances falls off, thereby avoiding the material powder and iron substances being contaminated on the electromagnet together, so that the electromagnet is completely covered by iron substances and material powder, resulting in a decrease in the electromagnet's attraction force and a poor subsequent adsorption effect of iron substances.

[0049] The implementation method of the present invention will be further described below with reference to the accompanying drawings and embodiments.

[0050] A method for removing iron from a kaolinite-type coal gangue iron removal device;

[0051] Step 1: Crush the coal gangue. The coal gangue is fed into the crushing unit through the feeding hopper 2. Then the motor 5 works and the output end rotates to drive the three-wheeled wheel 20 at one end to rotate. It is connected to the belt 6 to drive the two-wheeled wheel 18 on the other side to rotate, so that the crushing roller 16 and the crushing roller 21 cooperate to crush the coal gangue.

[0052] Step 2: The crushed coal gangue will fall onto the collecting plate 27 and then onto the filter plate 29 through the falling hole. The filter plate 29 is inclined. During the falling process, the crushed raw material will move on the filter plate 29, thereby screening the material. Larger particles will be discharged through the discharge port 10 for further crushing.

[0053] Step 3: The screened material falls onto the screening mechanism through the guide cylinder 11. Simultaneously, connected by the belt 6, the motor 5 drives the first crushing roller 16 and the second crushing roller 21 to rotate, which in turn drives the first rotating wheel 17 to rotate. When the first rotating wheel 17 rotates, it drives the connecting shaft on one side to rotate, thereby driving the outer magnetic mesh 33 to screen the falling material. During screening, the magnetic mesh 33 will adsorb the iron substances carried in the material. When the magnetic mesh 33 rotates, it will drive the adsorption plates 34 on both sides to rotate. The adsorption plates 34 are made of strong electromagnets, and the adsorption force is greater than that of the magnetic mesh 33, so that the iron substances on the magnetic mesh 33 can be transferred to the adsorption plates 34. At the same time, during the movement, due to the contact between the magnetic mesh 33 and the adsorption plates 34, the material powder on the adsorbed iron substances falls off.

[0054] Step 4: The iron-removed material falls through the guide plate 35 to the inside of the protective plate 36. Then, the blower 9 on one side works, blowing the falling material through the nozzle. During blowing, the blower blows air into the outlet pipe 903 through the air pipe 902. The air is blown out through the outlet nozzle 904, causing the fine particles to be blown to one side. The fine particles enter the collection chamber 37 through the blowing and are discharged through the discharge pipe 13 for direct use. Larger particles fall through the guide trough 39 to the inside of the discharge pipe 12 and into the collection box 8. After completion, chemical liquid is injected into the collection box 8 for further iron removal.

[0055] Step 5: During the iron removal process, the cleaning component 4 at the top is activated, and the exhaust fan is activated. The suction force generated through the duct 407 is used to extract the smoke and dust generated inside the device through the exhaust nozzle 401. The smoke and dust will enter the exhaust pipe 402 through the exhaust nozzle 401, and then enter the filter box 405 through the duct 407. The filter screen inside the filter box 405 will then filter the smoke and dust, and the purified gas will be discharged through the exhaust pipe.

[0056] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A kaolinite-type coal gangue iron removal device, comprising a placement box, a guide cylinder fixedly installed at the bottom of the placement box, a connecting box fixedly installed at the bottom of the guide cylinder, and support legs fixedly installed at both ends of the placement box, the support legs and the connecting box being fixedly connected by fixing blocks, characterized in that, A crushing component is provided on the upper inner side of the placement box, and a screening mechanism is provided on the upper inner side of the connecting box. The screening mechanism and the crushing component are connected to each other by a belt. The screening mechanism includes a rotating shaft. Placement blocks are fixedly installed on the upper center of the inner wall of the connecting box. The rotating shaft is rotatably positioned between two placement blocks. A rotating wheel is fixedly installed at one end of the rotating shaft. Several magnetic meshes are fixedly installed on the outer side of the rotating shaft. Fixed disks are fixedly installed on both sides of the placement blocks on the upper wall of the connecting box. A placement shaft is rotatably positioned between two fixed disks. Adsorption plates are fixedly installed on the outer sides of both placement shafts. Both the adsorption plates and placement shafts are electromagnets. The width of the adsorption plates and magnetic meshes is the same. The magnetic attraction of the adsorption plates and placement shafts is greater than that of the magnetic meshes. The adsorption plates and magnetic meshes mesh interlock. During screening, the magnetic meshes adsorb iron substances carried in the material. When the magnetic meshes rotate, they drive the adsorption plates on both sides to rotate, thereby transferring the iron substances on the magnetic meshes to the adsorption plates. Simultaneously, during the movement, the contact between the magnetic meshes and the adsorption plates causes the material powder on the adsorbed iron substances to fall off. The crushing component includes a connecting shaft 1, which is rotatably mounted on the upper side inside the placement box. A crushing roller 2 is fixedly installed on the outer side of the connecting shaft 1. A rotating wheel 2 is fixedly installed at one end of the connecting shaft 1. The connecting shaft 2 is rotatably mounted on one side of the connecting shaft 1 inside the placement box. A crushing roller 1 is fixedly installed on the outer side of the connecting shaft 2. The crushing roller 1 and the crushing roller 2 mesh with each other. A rotating wheel 3 is fixedly installed at one end of the connecting shaft 2. A motor is installed on one side of the rotating wheel 3. A fixing plate is fixedly installed on one side of the placement box. A support plate is fixedly installed on one side of the motor. The motor is fixedly mounted on the fixing plate through the support plate. A belt is sleeved on the outer side of the rotating wheels 1, 2, and 3. The connecting box has guide plates fixedly installed on both sides below the screening mechanism. The bottom of the two guide plates is fixedly installed with protective plates. One of the protective plates has a collection chamber and the other protective plate has a blower. The blowing component includes an air outlet, the air outlet of which is disposed opposite to the collection chamber, for blowing fine particles into the collection chamber to achieve sorting; A second material guide trough is formed between the two protective plates. A first material discharge pipe is fixedly installed on one side below the connecting box. The second material guide trough and the first material discharge pipe are interconnected. A first material guide trough is provided on one side of the second material guide trough inside the connecting box. The first material guide trough is interconnected with the collecting chamber. A second material discharge pipe is fixedly installed on one side of the first material discharge pipe below the connecting box. The second material discharge pipe is interconnected with the first material guide trough. A collection box is provided below the discharge pipe, and a liquid injection port is provided on one side of the collection box; The air outlet is fixedly installed on the protective plate. Several air outlet pipes are fixedly installed on one side of the air outlet. An air blowing pipe is fixedly installed at one end of the air outlet pipe, and an air blower is fixedly installed on one side of the air blowing pipe.

2. The iron removal device for kaolinite-type coal gangue according to claim 1, characterized in that, A protective cover is provided above the placement box, and a feeding hopper is fixedly installed on one side of the protective cover. A feeding port is opened on one side of the feeding hopper.

3. The iron removal device for kaolinite-type coal gangue according to claim 2, characterized in that, A collection plate is fixedly installed below the first and second crushing rollers inside the placement box. The collection plate is arc-shaped and has several discharge holes at its bottom. A filter plate is installed below the collection plate inside the placement box.

4. The iron removal device for kaolinite-type coal gangue according to claim 3, characterized in that, A placement groove is provided below the material collection plate on the placement box. The placement groove is inclined. Limiting grooves are provided on both sides of the placement groove. The filter plate is inclinedly inserted into the inner side of the placement groove. Limiting blocks are fixedly installed on both sides of the filter plate. The limiting blocks are inserted into the inner side of the limiting groove. The filter plate is fixedly installed in the inner side of the placement groove by the limiting blocks. One side of the filter plate is higher than the other side. A discharge port is provided at the low position of the filter plate on one side of the placement box. The discharge port is inclined. The bottom of the discharge port and the upper surface of the filter plate are on the same plane.

5. The iron removal device for kaolinite-type coal gangue according to claim 4, characterized in that, A cleaning component is provided on the side of the protective cover opposite to the feeding hopper; the cleaning component includes an air extraction nozzle, which is fixedly installed on one side of the protective cover. Several air extraction pipes are fixedly installed on one side of the air extraction nozzle. A connecting pipe is fixedly installed at one end of the air extraction pipe, and a guide pipe is fixedly installed at one end of the connecting pipe. An air extraction machine is fixedly installed in the middle of the outer side of the guide pipe. A filter box is provided at the end of the guide pipe. Several filter screens are fixedly installed inside the filter box. Several exhaust holes are opened on the end of the filter box opposite to the guide pipe.

6. A method for removing iron from kaolinite-type coal gangue using the iron removal device as described in claim 5, characterized in that, Includes the following steps: Step 1: Crush the coal gangue. The coal gangue is fed into the crushing machine through the feeding hopper. Then the motor works and the output end rotates, driving one end of the three-wheeled wheel to rotate. It also drives the other side of the two-wheeled wheel to rotate through the belt connection, so that the crushing roller one and the crushing roller two cooperate with each other to crush the coal gangue. Step 2: The crushed coal gangue will fall onto the collecting plate and then onto the filter plate through the feeding hole. The filter plate is set at an inclination. During the falling process, the crushed raw material will move on the filter plate, which will screen the material. Larger particles will be discharged through the discharge port for further crushing. Step 3: The screened material falls onto the screening mechanism through the guide cylinder. Simultaneously, the motor drives the first and second crushing rollers to rotate via the belt, which in turn drives the first rotating wheel to rotate. The rotation of the first rotating wheel drives the connecting shaft on one side to rotate, thereby driving the outer magnetic mesh to screen the falling material. During screening, the magnetic mesh will adsorb the iron substances carried in the material. As the magnetic mesh rotates, it will drive the adsorption plates on both sides to rotate. The adsorption plates are made of strong electromagnets, and the adsorption force is greater than that of the magnetic mesh, which can transfer the iron substances on the magnetic mesh to the adsorption plates. At the same time, due to the contact between the magnetic mesh and the adsorption plates during the movement, the material powder on the adsorbed iron substances falls off. Step 4: The iron-removed material falls through the guide plate to the inside of the protective plate. Then, the blower on one side works, blowing the falling material through the air nozzle. Fine particles are blown into the collection chamber and discharged through the second discharge pipe for direct use, while larger particles fall through the second guide chute to the inside of the first discharge pipe and into the collection box. After completion, chemical liquid is injected into the collection box for further iron removal. Step 5: During the iron removal process, the cleaning unit located at the top works, and the air extractor draws out the smoke and dust generated inside the device through the air nozzle. The smoke and dust are then drawn into the filter box, thereby filtering the smoke and dust.

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