Process for recovering iron and carbon from zinc volatilization kiln slag through dry magnetic separation

Abstract

The invention relates to the technical field of kiln slag recycling, and discloses a process for recovering iron and carbon from zinc volatilization kiln slag through dry-method magnetic separation, a magnetic separator is included, the magnetic separator comprises a shell, a barrel is rotatably mounted in the shell, a motor is fixedly mounted on one side of the shell, an output shaft of the motor is in transmission connection with one end of the barrel, and the other end of the barrel is in transmission connection with the other end of the shell. A magnetic attraction assembly is arranged in the cylinder, and one end of the magnetic attraction assembly penetrates through the cylinder and is fixedly connected to the outside of the shell through a support. The device is matched with the mesh plate and the grinding roller to crush filtered caked kiln slag, so that the caked kiln slag can be crushed and penetrates through the mesh plate to be adsorbed on the surface of the barrel, the situation that iron contained in the large kiln slag cannot be adsorbed by the barrel is avoided, the separation degree is further improved, vibration of the mesh plate can be achieved, and the separation efficiency is improved. And the kiln slag clamped in the mesh holes of the mesh plate is shaken to fall to the upper part, so that the kiln slag in the mesh holes of the mesh plate is cleaned, and iron in the clamped kiln slag can be recycled.

Description

Technical Field

[0001] The invention belongs to the technical field of kiln slag recycling, and in particular relates to a process for recovering iron and carbon from zinc volatilization kiln slag through dry magnetic separation. Background Art

[0002] The secondary zinc oxide production process produces a large amount of kiln slag, which contains incompletely burned coking coal, iron and its compounds, precious metals, etc.

[0003] Therefore, it is necessary to separate and recycle the iron and carbon in the kiln slag. The existing recycling method is to use a magnetic separator to separate the iron and carbon. However, when the existing magnetic separator is actually used, the agglomerated kiln slag will wrap the iron, causing this part of the iron to be unable to be adsorbed when passing through the rotating drum of the magnetic separator and cannot be taken away. It will eventually be mixed with the carbon, resulting in poor recovery effect.

[0004] Therefore, it is necessary to invent a process for recovering iron and carbon by dry magnetic separation of zinc volatilization kiln slag to solve the above problems. Summary of the invention

[0005] In view of the above problems, the present invention provides a process for recovering iron and carbon from zinc volatilization kiln slag by dry magnetic separation to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical scheme: a process for recovering iron and carbon from zinc volatilization kiln slag by dry magnetic separation, comprising a magnetic separator, the magnetic separator comprising a shell, a cylinder is rotatably installed inside the shell, a motor is fixedly installed on one side of the shell, the output shaft of the motor is drivingly connected to one end of the cylinder, a magnetic attraction component is provided inside the cylinder, one end of the magnetic attraction component passes through the cylinder and is fixedly connected to the outside of the shell by a bracket, a first nozzle and a second nozzle are respectively provided inside the shell, a mounting opening is opened inside the shell, a rotating shaft is symmetrically rotatably installed in the mounting opening, a mounting frame matching the mounting opening is fixedly connected between the two rotating shafts, a mesh plate is provided inside the mounting frame, a rolling roller is provided inside the mounting frame and below the mesh plate, and a driving component for driving the rotating shaft to rotate alternately in forward and reverse directions is provided outside the rotating shaft.

[0007] Furthermore, the driving assembly includes a movable port arranged inside the shell, one end of the rotating shaft on one side extends into the movable port and is fixedly installed with a first gear, the inner wall of the shell is provided with a vertical groove connected to the movable port, a connecting block is slidably installed in the vertical groove, one side of the connecting block extends into the movable port and is fixedly installed with a first rack matching the first gear, a pressure plate is fixedly installed on the top of the first rack, the bottom of the connecting block is fixedly connected to the bottom wall of the vertical groove by a plurality of first springs, and a pair of pressure blocks matching the pressure plate are fixedly installed on the outer side of the cylinder.

[0008] Furthermore, a first curved surface is provided on one side of the pressing block, and a second curved surface connected to the first curved surface is provided on a side of the pressing block away from the cylinder, and the curvature of the second curved surface is consistent with the curvature of the outer side of the cylinder.

[0009] Furthermore, a long opening is symmetrically opened inside the mounting frame, teeth are equidistantly arranged on the top wall of the long opening, both ends of the rolling roller extend into the long opening and are fixedly connected with a second gear matching the teeth, and the top of the rolling roller fits with the bottom of the mesh plate.

[0010] Furthermore, movable grooves are symmetrically opened inside the mounting frame, and movable plates are slidably installed inside the movable grooves. The two movable plates are fixedly connected to the mesh plate, and a notch is opened on the left side of the bottom of the mesh plate. The bottom of the movable plate is fixedly connected to the bottom wall of the movable groove by a second spring, and a pressing component for driving the movable plate to descend is provided on the outside of one side.

[0011] Furthermore, the pressing assembly includes an arc plate fixedly connected to the top of a movable plate on one side, the top of the arc plate extends through the top wall of the movable groove to the top of the mounting frame, the top of the mounting frame is symmetrically fixedly installed with a side plate, a rotating column is rotatably installed between the two side plates, a baffle is symmetrically fixedly installed on the outside of the rotating column, an axle rod is rotatably installed between the two baffle plates, the external fixed sleeve of the axle rod is provided with a toggle plate, a baffle rod is fixedly installed between the two baffle plates and above the toggle plate, both ends of the axle rod extend to the outer sleeve of the baffle plate and a torsion spring is provided, the two ends of the torsion spring are respectively fixedly connected to the axle rod and the baffle, and the outside of the rotating column is provided with a rotating assembly for driving it to rotate.

[0012] Furthermore, the rotating assembly includes a third gear, one end of the rotating column extends outside the side plate and is fixedly connected to the third gear, and a second rack matching the third gear is fixedly installed inside the shell.

[0013] The process includes the following steps: S1. When in use, an external water supply device is connected to the first nozzle and the second nozzle, the kiln slag is poured into the shell, and water is injected into the first nozzle and the second nozzle in cooperation with the water supply device, so that the first nozzle and the second nozzle spray water. The arrangement positions of the first nozzle and the second nozzle are consistent with the positions of the two water spray pipes in the magnetic separator in the prior art. The water sprayed from the first nozzle can flush the kiln slag into the shell, so that the kiln slag flows along the channel in the shell and filters the agglomerated kiln slag through the mesh plate; S2, start the motor to make its output shaft rotate with the cylinder, the iron slag in the filtered slag moves with the water flow through the magnetic suction component, is attracted, and adheres to the outside of the cylinder. As the cylinder rotates, when the cylinder moves with the iron slag to leave the magnetic suction component area, the water flow sprayed from the second nozzle can wash away the iron slag attached to the outside of the cylinder, so that the iron slag falls outside the shell for collection, and the coal in the slag after the iron is removed moves with the water flow, and is finally discharged through the discharge port of the shell, thereby realizing the separation of coal and iron in the slag; S3. During this process, the driving assembly drives the rotating shaft to rotate forward and reverse alternately, so that the mounting frame, mesh plate, and rolling roller move accordingly. In the initial state, the mesh plate, mounting frame and rolling roller are inclined to the left. As the mounting frame rotates to the right, when the mounting frame rotates to a horizontal state, as the mounting frame continues to rotate to the right, the rolling roller moves to the right, so that the agglomerated slag blocked at the bottom of the mesh plate is crushed, so that the agglomerated slag can be broken up, and then pass through the mesh plate and be adsorbed on the surface of the cylinder, avoiding the situation that the iron contained in large pieces of slag cannot be adsorbed by the cylinder, thereby improving the degree of separation; when the mounting frame rotates to the left, the same principle is used to realize the leftward movement of the rolling roller for rolling, and the reciprocating rotation of the mounting frame allows the rolling roller to continuously roll the agglomerated slag, so that the agglomerated slag is broken up, so that it can be ensured to be taken away by the cylinder, thereby improving the separation effect.

[0014] Technical effects and advantages of the present invention: 1. The present invention can crush the filtered agglomerated slag in combination with the mesh plate and the rolling roller, so that the agglomerated slag can be broken up, and then pass through the mesh plate and be adsorbed on the surface of the cylinder, avoiding the situation where the iron contained in the large pieces of slag cannot be adsorbed by the cylinder, thereby improving the degree of separation; 2. The present invention can realize the vibration of the mesh plate, so that the kiln slag stuck in the mesh holes of the mesh plate can be shaken off to the upper side, thereby completing the cleaning of the kiln slag in the mesh holes of the mesh plate, and ensuring that the iron in this part of the kiln slag stuck can also be recycled. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic structural diagram of a magnetic separator according to an embodiment of the present invention is shown; Figure 2 The cross-sectional structure diagram of the magnetic separator of the embodiment of the present invention is shown in FIG. Figure 1 ; Figure 3 The embodiment of the present invention is shown Figure 2 The enlarged structural diagram at A in the middle; Figure 4 The cross-sectional structure diagram of the magnetic separator of the embodiment of the present invention is shown in FIG. Figure 2 ; Figure 5 The embodiment of the present invention is shown Figure 4 The enlarged structural diagram at B in the middle; Figure 6 A structural schematic diagram showing a partial structure of an embodiment of the present invention; Figure 7 The embodiment of the present invention is shown Figure 6 The enlarged structural diagram at C in the middle; Figure 8 The embodiment of the present invention is shown Figure 6 The enlarged structural diagram at D in the middle; Fig. 9 A schematic diagram showing the structure of a portion of the rolling rollers in an embodiment of the present invention is shown; In the figure: 1. shell; 2. cylinder; 3. motor; 4. magnetic suction assembly; 5. mounting frame; 6. mesh plate; 7. rolling roller; 8. second gear; 9. teeth; 10. first gear; 11. first rack; 12. pressure plate; 13. connecting block; 14. first spring; 15. pressure block; 16. first arc surface; 17. second arc surface; 18. moving plate; 19. second spring; 20. arc plate; 21. side plate; 22. rotating column; 23. toggle plate; 24. stop rod; 25. third gear; 26. second rack; 27. torsion spring; 28. first nozzle; 29. ​​second nozzle. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0017] The present invention provides a process for recovering iron and carbon from zinc volatilization kiln slag by dry magnetic separation, such as Figures 1 to 9 As shown, it includes a magnetic separator, which includes a shell 1, a cylinder 2 is rotatably installed inside the shell 1, the shell 1 is the outer shell of the magnetic separator in the prior art, a motor 3 is fixedly installed on one side of the shell 1, the output shaft of the motor 3 is drivingly connected to one end of the cylinder 2, a magnetic attraction component 4 is provided inside the cylinder 2, the magnetic attraction component 4 is the magnetic attraction component inside the existing magnetic separator, one end of the magnetic attraction component 4 passes through the cylinder 2 and is fixedly connected to the outside of the shell 1 through a bracket, a first nozzle 28 and a second nozzle 29 are respectively provided inside the shell 1, a mounting opening is opened inside the shell 1, a rotating shaft is symmetrically rotatably installed in the mounting opening, a mounting frame 5 matched with the mounting opening is fixedly connected between the two rotating shafts, a mesh plate 6 is provided inside the mounting frame 5, a rolling roller 7 is provided inside the mounting frame 5 and below the mesh plate 6, and a driving component for driving the rotating shaft to rotate alternately in forward and reverse directions is provided outside the rotating shaft.

[0018] When in use, the external water supply equipment is connected to the first nozzle 28 and the second nozzle 29, the kiln slag is poured into the shell 1, and water is injected into the first nozzle 28 and the second nozzle 29 in coordination with the water supply equipment, so that the first nozzle 28 and the second nozzle 29 spray water. The setting position of the first nozzle 28 and the second nozzle 29 is consistent with the position of the two water spray pipes in the magnetic separator in the prior art. The water sprayed from the first nozzle 28 can flush the kiln slag into the shell 1, so that the kiln slag flows along the channel in the shell 1 and passes through the mesh plate 6. The agglomerated slag is filtered, and the motor 3 is started to make its output shaft rotate with the cylinder 2. The iron slag in the filtered slag moves with the water flow through the magnetic suction component 4, is attracted, and adheres to the outside of the cylinder 2. As the cylinder 2 rotates, when the cylinder 2 moves with the iron slag to leave the area of ​​the magnetic suction component 4, the water flow sprayed by the second nozzle 29 can wash away the iron slag attached to the outside of the cylinder 2, so that the iron slag falls outside the shell 1 for collection, and the coal in the slag after the iron is removed moves with the water flow. Finally, it is discharged through the discharge port of the shell 1, thereby realizing the separation of coal and iron in the slag. In this process, the driving assembly drives the rotating shaft to rotate forward and reverse alternately, so that the mounting frame 5, the mesh plate 6, and the rolling roller 7 move accordingly. In the initial state, the mesh plate 6, the mounting frame 5 and the rolling roller 7 are inclined to the left. As the mounting frame 5 rotates to the right, when the mounting frame 5 rotates to a horizontal state, as the mounting frame 5 continues to rotate to the right, the rolling roller 7 moves to the right, so that the agglomerated slag blocked at the bottom of the mesh plate 6 is crushed, so that the agglomerated slag can be broken, so that it can pass through the mesh plate 6 and be adsorbed on the surface of the cylinder 2, avoiding the situation that the iron contained in the large piece of slag cannot be adsorbed by the cylinder 2, thereby improving the degree of separation. When the mounting frame 5 rotates to the left, the same principle can be used to realize the leftward movement of the rolling roller 7 for rolling. Through the reciprocating rotation of the mounting frame 5, the rolling roller 7 can continuously roll the agglomerated slag, so that the agglomerated slag is broken, so that it can be guaranteed to be taken away by the cylinder 2, thereby improving the separation effect.

[0019] like Figures 4 to 5 As shown, the driving assembly includes a movable port arranged inside the shell 1, one end of the rotating shaft on one side extends to the movable port and a first gear 10 is fixedly installed therein, the inner wall of the shell 1 is provided with a vertical groove connected to the movable port, a connecting block 13 is slidably installed in the vertical groove, one side of the connecting block 13 extends to the movable port and a first rack 11 matching the first gear 10 is fixedly installed therein, a pressure plate 12 is fixedly installed on the top of the first rack 11, the bottom of the connecting block 13 is fixedly connected to the bottom wall of the vertical groove by a plurality of first springs 14, and a pair of pressure blocks 15 matching the pressure plate 12 are fixedly installed on the outer side of the cylinder 2.

[0020] The cylinder 2 rotates and the pressure block 15 moves with it. After the pressure block 15 contacts the pressure plate 12, it squeezes the first rack 11 to make it descend with the connecting block 13, compresses the first spring 14 to deform it and generate a force. When the first rack 11 descends, it drives the first gear 10 to rotate with the rotating shaft and the mounting frame 5, so that the mounting frame 5 rotates to the right. When the pressure block 15 leaves the pressure plate 12, the first spring 14 releases the force to make the connecting block 13, the first rack 11, and the pressure plate 12 rise and reset. Conversely, the first rack 11 drives the first gear 10 to rotate left, thereby causing the mounting frame 5 to rotate left.

[0021] like Figure 5 As shown, a first curved surface 16 is provided on one side of the pressing block 15 , and a second curved surface 17 connected to the first curved surface 16 is provided on the side of the pressing block 15 away from the cylinder 2 , and the curvature of the second curved surface 17 is consistent with the curvature of the outer side of the cylinder 2 .

[0022] When the pressing block 15 moves, the first curved surface 16 first contacts with the pressing plate 12, so that the pressing plate 12 is squeezed to make it descend with the first rack 11, and then the second curved surface 17 contacts with the pressing plate 12. At this time, the first rack 11 has been dropped to the bottom, and the mounting frame 5 is tilted to the right. Then, when the pressing block 15 moves, the second curved surface 17 slides relative to the pressing plate 12. Since the curvature of the second curved surface 17 is consistent with the curvature of the outer side of the cylinder 2, the pressing plate 12 will not continue to be squeezed and descend, and will remain stationary.

[0023] like Figure 3 and Fig. 9 As shown, a long opening is symmetrically opened inside the mounting frame 5, and teeth 9 are equidistantly provided on the top wall of the long opening. Both ends of the rolling roller 7 extend into the long opening and are fixedly connected with a second gear 8 that cooperates with the teeth 9, and the top of the rolling roller 7 fits with the bottom of the mesh plate 6.

[0024] When the rolling roller 7 moves to the right, it cooperates with the second gear 8 and the teeth 9 to drive the rolling roller 7 to rotate forward, so as to better crush the agglomerated kiln slag. When the rolling roller 7 moves to the left, on the contrary, the rolling roller 7 can reverse and continue to roll.

[0025] like Figures 3 to 8As shown, the interior of the mounting frame 5 is symmetrically provided with moving grooves, and a moving plate 18 is slidably installed inside the moving grooves. The two moving plates 18 are fixedly connected to the mesh plate 6. A notch is provided on the left side of the bottom of the mesh plate 6. The bottom of the moving plate 18 is fixedly connected to the bottom wall of the moving groove through a second spring 19. A pressing component for driving the moving plate 18 to descend is provided on the outside of one side of the moving plate 18. Both the first spring 14 and the second spring 19 are rust-proofed. When in use, part of the kiln slag will be stuck in the mesh holes of the mesh plate 6, making it impossible to recover the iron inside. Therefore, when the mounting frame 5 rotates to the right, the pressing component is cooperated to drive the moving plate 18 to descend. The movable plate 18 descends, causing the mesh plate 6 to descend. The presence of the notch allows the mesh plate 6 to descend at this time. The movable plate 18 descends and compresses the second spring 19 to deform it and generate a force. When the mounting frame 5 is horizontal, the pressing component cancels the pressing on the movable plate 18, and the compressed second spring 19 releases the force to cause the movable plate 18 and the mesh plate 6 to rise rapidly. The movable plate 18 collides with the movable groove to generate vibration, which is transmitted to the mesh plate 6, causing the slag stuck in the mesh of the mesh plate 6 to fall to the top, completing the cleaning of the slag in the mesh of the mesh plate 6, ensuring that the iron in this part of the stuck slag can also be recycled.

[0026] like Figures 3 to 8 As shown, the pressing assembly includes an arc-shaped plate 20 fixedly connected to the top of a movable plate 18 on one side, the top of the arc-shaped plate 20 extends through the top wall of the movable groove to the top of the mounting frame 5, and a side plate 21 is symmetrically fixedly installed on the top of the mounting frame 5, a rotating column 22 is rotatably installed between the two side plates 21, a baffle is symmetrically fixedly installed on the outside of the rotating column 22, a shaft rod is rotatably installed between the two baffles, a toggle plate 23 is fixedly installed on the outside of the shaft rod, a baffle rod 24 is fixedly installed between the two baffles and above the toggle plate 23, both ends of the shaft rod extend to the outer sleeve of the baffle and a torsion spring 27 is provided, the two ends of the torsion spring 27 are respectively fixedly connected to the shaft rod and the baffle, and a rotating assembly for driving the rotating column 22 is provided on the outside of the rotating column 22.

[0027] As the mounting frame 5 rotates to the right, the side plate 21, the rotating column 22, the baffle plate, the baffle rod 24, the shaft rod and the toggle plate 23 move accordingly, and the rotating assembly drives the rotating column 22 to rotate, so that the toggle plate 23 conflicts with the top of the arc plate 20. Due to the existence of the baffle rod 24, the toggle plate 23 cannot deflect at this time, so the arc plate 20 is squeezed in its original state to make it descend with the moving plate 18 and the mesh plate 6, and the second spring 19 is compressed to deform and generate a force, and then the toggle plate 23 is separated from the arc plate 20, and the compressed second spring 19 releases the force to move the moving plate 18 and the mesh plate 6 Rapidly rising, the moving plate 18 collides with the moving groove to generate vibration, and the vibration is transmitted to the mesh plate 6. When the mounting frame 5 rotates to the left, the rotating assembly drives the rotating column 22 to rotate in the opposite direction of the previous rotation. When the toggle plate 23 conflicts with the arc plate 20, the toggle plate 23 rotates with the shaft rod, so that the torsion spring 27 is twisted, so that the toggle plate 23 avoids the arc plate 20. When the arc plate 20 is separated from the toggle plate 23, the torsion spring 27 releases the force to rotate and reset the shaft rod and the toggle plate 23. The torsion spring 27 can keep the toggle plate 23 in a stationary state when the toggle plate 23 does not conflict with the arc plate 20.

[0028] like Figure 3 and Figure 8 As shown, the rotating assembly includes a third gear 25 , one end of the rotating column 22 extends to the outside of the side plate 21 and is fixedly connected to the third gear 25 , and a second rack 26 matching the third gear 25 is fixedly installed inside the housing 1 .

[0029] When the rotating column 22 moves along with the mounting frame 5 , the rotating column 22 can be driven to rotate in cooperation with the third gear 25 and the second rack 26 .

[0030] The process includes the following steps: S1. When in use, the external water supply equipment is connected to the first spray pipe 28 and the second spray pipe 29, the kiln slag is poured into the shell 1, and water is injected into the first spray pipe 28 and the second spray pipe 29 in coordination with the water supply equipment, so that the first spray pipe 28 and the second spray pipe 29 spray water. The arrangement positions of the first spray pipe 28 and the second spray pipe 29 are consistent with the positions of the two spray pipes in the magnetic separator in the prior art. The water sprayed from the first spray pipe 28 can flush the kiln slag into the shell 1, so that the kiln slag flows along the channel in the shell 1 and filters the agglomerated kiln slag through the mesh plate 6; S2, start the motor 3 so that its output shaft rotates with the cylinder 2, and the iron slag in the filtered slag moves with the water flow through the magnetic suction component 4, is attracted, and adheres to the outside of the cylinder 2. As the cylinder 2 rotates, when the cylinder 2 moves with the iron slag to leave the area of ​​the magnetic suction component 4, the water flow sprayed by the second nozzle 29 can wash away the iron slag attached to the outside of the cylinder 2, so that the iron slag falls outside the shell 1 for collection, and the coal in the slag after the iron is removed moves with the water flow, and is finally discharged through the discharge port of the shell 1, thereby realizing the separation of coal and iron in the slag; S3. In this process, the driving assembly drives the rotating shaft to rotate forward and reverse alternately, so that the mounting frame 5, the mesh plate 6, and the rolling roller 7 move accordingly. In the initial state, the mesh plate 6, the mounting frame 5 and the rolling roller 7 are inclined to the left. As the mounting frame 5 rotates to the right, when the mounting frame 5 rotates to a horizontal state, as the mounting frame 5 continues to rotate to the right, the rolling roller 7 moves to the right, so that the agglomerated slag blocked at the bottom of the mesh plate 6 is crushed, so that the agglomerated slag can be broken up, so that it can pass through the mesh plate 6 and be adsorbed on the surface of the cylinder 2, thereby avoiding the situation that the iron contained in the large pieces of slag cannot be adsorbed by the cylinder 2, thereby improving the degree of separation. When the mounting frame 5 rotates to the left, the same principle is used to realize the leftward movement of the rolling roller 7 for rolling. Through the reciprocating rotation of the mounting frame 5, the rolling roller 7 can continuously roll the agglomerated slag, so that the agglomerated slag is broken up, so that it can be ensured to be taken away by the cylinder 2, thereby improving the separation effect.

[0031] Working principle: When in use, the external water supply equipment is connected to the first nozzle 28 and the second nozzle 29, and the kiln slag is poured into the shell 1. The water supply equipment is used to inject water into the first nozzle 28 and the second nozzle 29, so that the first nozzle 28 and the second nozzle 29 spray water. The setting position of the first nozzle 28 and the second nozzle 29 is consistent with the position of the two water spray pipes in the magnetic separator in the prior art. The water sprayed by the first nozzle 28 can flush the kiln slag into the shell 1, so that the kiln slag flows along the channel in the shell 1, and the agglomerated kiln slag is filtered through the mesh of the mesh plate 6. The motor 3 is started so that its output shaft rotates with the cylinder 2. The iron slag in the filtered kiln slag moves with the water flow through the magnetic suction component 4, is attracted, and adheres to the outside of the cylinder 2. As the cylinder 2 rotates, when the cylinder 2 carries the iron slag When the slag moves to leave the area of ​​the magnetic suction component 4, the water flow sprayed from the second nozzle 29 can wash away the iron slag attached to the outside of the cylinder 2, so that the iron slag falls outside the shell 1 for collection, and the coal in the slag after the iron is removed moves with the water flow, and is finally discharged through the discharge port of the shell 1, thereby realizing the separation of coal and iron in the slag. In this process, the cylinder 2 rotates and moves with the pressure block 15. After the pressure block 15 contacts the pressure plate 12, it squeezes the first rack 11 to make it descend with the connecting block 13, compressing the first spring 14 to deform it and generate a force. When the first rack 11 descends, it drives the first gear 10 to rotate with the rotating shaft and the mounting frame 5, so that the mounting frame 5 rotates to the right. When the pressure block 15 leaves the pressure plate 12, the first spring 14 releases its force The connecting block 13, the first rack 11 and the pressure plate 12 rise and reset. On the contrary, the first rack 11 drives the first gear 10 to rotate left, so that the mounting frame 5 rotates left. When the pressure block 15 moves, the first curved surface 16 first contacts with the pressure plate 12, so that the pressure plate 12 is squeezed to make it descend with the first rack 11, and then the second curved surface 17 contacts with the pressure plate 12. At this time, the first rack 11 has dropped to the bottom, and the mounting frame 5 is tilted to the right. When the pressure block 15 moves, the second curved surface 17 slides relative to the pressure plate 12. Since the curvature of the second curved surface 17 is consistent with the curvature of the outer side of the cylinder 2, the pressure plate 12 will not continue to be squeezed and descended at this time, and the mounting frame 5 will remain stationary for a period of time. When the mounting frame 5 rotates, it brings the mesh plate 6, The rolling roller 7 moves accordingly. In the initial state, the mesh plate 6, the mounting frame 5 and the rolling roller 7 are tilted to the left. As the mounting frame 5 rotates to the right, when the mounting frame 5 rotates to a horizontal state, as the mounting frame 5 continues to rotate to the right, the rolling roller 7 moves to the right, and cooperates with the second gear 8 and the teeth 9 to drive the rolling roller 7 to rotate forward, so as to better crush the agglomerated slag. When the rolling roller 7 moves to the left, on the contrary, the rolling roller 7 can reverse and continue to roll, so that the agglomerated slag can be broken up, so that it passes through the mesh plate 6 and is adsorbed on the surface of the cylinder 2, avoiding the situation that the iron contained in the large pieces of slag cannot be adsorbed by the cylinder 2, thereby improving the separation degree, and the reciprocating rotation of the mounting frame 5 allows the rolling roller 7 to continuously roll the agglomerated slag to break up the agglomerated slag.When the mounting frame 5 rotates to the right, the side plate 21, the rotating column 22, the baffle plate, the baffle rod 24, the shaft rod and the toggle plate 23 move accordingly. When the rotating column 22 moves with the mounting frame 5, the third gear 25 and the second rack 26 can drive the rotating column 22 to rotate, so that the toggle plate 23 conflicts with the top of the arc plate 20. Due to the existence of the baffle rod 24, the toggle plate 23 cannot be deflected at this time. Therefore, the arc plate 20 is squeezed in its original state to make it descend with the moving plate 18 and the mesh plate 6, and the second spring 19 is compressed to deform it to generate a force, and then the toggle plate 23 is separated from the arc plate 20, and the compressed second spring 19 releases the force to move the moving plate 18 and the mesh plate 6. The mesh plate 6 rises quickly, and the moving plate 18 collides with the moving groove to generate vibration, which is transmitted to the mesh plate 6. When the mounting frame 5 rotates to the left, on the contrary, the driving column 22 rotates in the opposite direction to the previous rotation direction. When the toggle plate 23 conflicts with the arc plate 20, the toggle plate 23 rotates with the shaft rod, so that the torsion spring 27 is twisted, so that the toggle plate 23 avoids the arc plate 20. When the arc plate 20 is separated from the toggle plate 23, the torsion spring 27 releases the force to rotate and reset the shaft rod and the toggle plate 23. The torsion spring 27 can keep the toggle plate 23 in a stationary state when the toggle plate 23 does not conflict with the arc plate 20. Subsequently, the vibration of the mesh plate 6 can be repeated as above, so that the slag stuck in the mesh of the mesh plate 6 is shaken off to the top, and the slag in the mesh of the mesh plate 6 is cleaned, ensuring that the iron in this part of the stuck slag can also be recycled.

[0032] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them.

Claims

1. A process for recovering iron and carbon from zinc volatilization kiln slag by dry magnetic separation, comprising a magnetic separator, characterized in that: The magnetic separator comprises a shell (1), a cylinder (2) is rotatably mounted inside the shell (1), a motor (3) is fixedly mounted on one side of the shell (1), an output shaft of the motor (3) is drivingly connected to one end of the cylinder (2), a magnetic attraction component (4) is arranged inside the cylinder (2), one end of the magnetic attraction component (4) passes through the cylinder (2) and is fixedly connected to the outside of the shell (1) through a bracket, a first nozzle (28) and a second nozzle (29) are respectively arranged inside the shell (1), a mounting opening is opened inside the shell (1), a rotating shaft is symmetrically rotatably mounted inside the mounting opening, a mounting frame (5) matched with the mounting opening is fixedly connected between the two rotating shafts, a mesh plate (6) is arranged inside the mounting frame (5), a rolling roller (7) is arranged inside the mounting frame (5) and below the mesh plate (6), and a driving component for driving the rotating shaft to rotate alternately in forward and reverse directions is arranged outside the rotating shaft; The driving assembly comprises a movable opening arranged inside the shell (1), one end of the rotating shaft on one side extends into the movable opening and is fixedly installed with a first gear (10), the inner wall of the shell (1) is provided with a vertical groove connected to the movable opening, a connecting block (13) is slidably installed in the vertical groove, one side of the connecting block (13) extends into the movable opening and is fixedly installed with a first rack (11) matching with the first gear (10), a pressure plate (12) is fixedly installed on the top of the first rack (11), the bottom of the connecting block (13) is fixedly connected to the bottom wall of the vertical groove via a plurality of first springs (14), and a pair of pressure blocks (15) matching with the pressure plate (12) are fixedly installed on the outer side of the cylinder (2).

2. The process for recovering iron and carbon from zinc volatilization kiln slag by dry magnetic separation according to claim 1, characterized in that: A first curved surface (16) is provided on one side of the pressing block (15), and a second curved surface (17) connected to the first curved surface (16) is provided on the side of the pressing block (15) away from the cylinder (2), wherein the curvature of the second curved surface (17) is consistent with the curvature of the outer side of the cylinder (2).

3. The process for recovering iron and carbon from zinc volatilization kiln slag by dry magnetic separation according to claim 2, characterized in that: The mounting frame (5) is symmetrically provided with a long opening inside, and teeth (9) are equidistantly provided on the top wall of the long opening. Both ends of the rolling roller (7) extend into the long opening and are fixedly connected with a second gear (8) that cooperates with the teeth (9). The top of the rolling roller (7) fits with the bottom of the mesh plate (6).

4. The process for recovering iron and carbon from zinc volatilization kiln slag by dry magnetic separation according to claim 3, characterized in that: The mounting frame (5) is symmetrically provided with movable grooves inside, and movable plates (18) are slidably installed inside the movable grooves. The two movable plates (18) are fixedly connected to the mesh plate (6), and a notch is provided on the left side of the bottom of the mesh plate (6). The bottom of the movable plate (18) is fixedly connected to the bottom wall of the movable groove via a second spring (19), and a pressing component for driving the movable plate (18) to descend is provided on the outside of one side.

5. The process for recovering iron and carbon from zinc volatilization kiln slag by dry magnetic separation according to claim 4, characterized in that: The pressing assembly comprises an arc plate (20) fixedly connected to the top of a movable plate (18) on one side, the top of the arc plate (20) passes through the top wall of the movable groove and extends to the top of the mounting frame (5), the top of the mounting frame (5) is symmetrically fixedly installed with a side plate (21), a rotating column (22) is rotatably installed between the two side plates (21), a baffle is symmetrically fixedly installed on the outside of the rotating column (22), an axle rod is rotatably installed between the two baffle plates, the external fixed sleeve of the axle rod is provided with a toggle plate (23), a baffle rod (24) is fixedly installed between the two baffle plates and above the toggle plate (23), both ends of the axle rod extend to the outer sleeve of the baffle plate and are provided with a torsion spring (27), the two ends of the torsion spring (27) are respectively fixedly connected to the axle rod and the baffle, and the outside of the rotating column (22) is provided with a rotating assembly for driving it to rotate.

6. The process for recovering iron and carbon from zinc volatilization kiln slag by dry magnetic separation according to claim 5, characterized in that: The rotating assembly comprises a third gear (25), one end of the rotating column (22) extends outside the side plate (21) and is fixedly connected to the third gear (25), and a second rack (26) matching the third gear (25) is fixedly installed inside the housing (1).

7. The process for recovering iron and carbon from zinc volatilization kiln slag by dry magnetic separation according to claim 6, characterized in that: The steps include: S1. When in use, an external water supply device is connected to the first spray pipe (28) and the second spray pipe (29), and kiln slag is poured into the shell (1). Water is injected into the first spray pipe (28) and the second spray pipe (29) in cooperation with the water supply device, so that the first spray pipe (28) and the second spray pipe (29) spray water. The arrangement positions of the first spray pipe (28) and the second spray pipe (29) are consistent with the positions of the two spray pipes in the magnetic separator in the prior art. The water sprayed from the first spray pipe (28) can flush the kiln slag into the shell (1), so that the kiln slag flows along the channel in the shell (1) and the agglomerated kiln slag is filtered through the mesh plate (6); S2, start the motor (3) so that its output shaft rotates with the cylinder (2), and the iron slag in the filtered slag moves with the water flow through the magnetic suction component (4), is attracted, and adheres to the outside of the cylinder (2). As the cylinder (2) rotates, when the cylinder (2) moves with the iron slag to leave the area of ​​the magnetic suction component (4), the water flow sprayed by the second nozzle (29) can wash away the iron slag attached to the outside of the cylinder (2), so that the iron slag falls outside the shell (1) for collection, and the coal in the slag after the iron is removed moves with the water flow and is finally discharged through the discharge port of the shell (1), thereby achieving the separation of coal and iron in the slag; S3. During this process, the driving assembly drives the rotating shaft to rotate forward and reverse alternately, so that the mounting frame (5), the screen plate (6), and the rolling roller (7) move accordingly. In the initial state, the screen plate (6), the mounting frame (5), and the rolling roller (7) are inclined to the left. As the mounting frame (5) rotates to the right, when the mounting frame (5) rotates to a horizontal state, as the mounting frame (5) continues to rotate to the right, the rolling roller (7) moves to the right, so that the agglomerated kiln slag blocked at the bottom of the screen plate (6) is crushed, so that The agglomerated slag can be broken up, thereby passing through the mesh plate (6) and being adsorbed on the surface of the cylinder (2), thereby avoiding the situation where the iron contained in the large pieces of slag cannot be adsorbed by the cylinder (2), thereby improving the degree of separation. When the mounting frame (5) rotates to the left, the rolling roller (7) can move to the left for rolling according to the same principle. Through the reciprocating rotation of the mounting frame (5), the rolling roller (7) can continuously roll the agglomerated slag, so that the agglomerated slag is broken up, so that it can be taken away by the cylinder (2), thereby improving the separation effect.

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