A harmless treatment device for electrolytic aluminum anode carbon slag

Abstract

The present invention discloses a harmless treatment device for electrolytic aluminum anode carbon residue, which relates to the technical field of electrolytic aluminum anode carbon residue treatment. The device comprises a primary conveying device and a secondary conveying device connected to the primary conveying device. A treatment outer box is provided on one side of the secondary conveying device, and a plurality of first mounting brackets are fixedly connected to the top of the treatment outer box. The present invention cooperates with the treatment outer box, the treatment inner box, the first drive mechanism, the second drive mechanism, the spiral material guide pipe, the annular grinding pipe, the grinding mechanism, and the inclined material guide plate. After the electrolytic aluminum anode carbon residue is discharged through the overflow hole, the rotating annular grinding pipe cooperates with the grinding mechanism to grind the carbon residue. The ground carbon residue is discharged into the treatment outer box through the grinding filter plate and then discharged through the inclined material guide plate. In this way, the ground carbon residue meets the requirements of the flotation method and is more conducive to the subsequent harmless treatment process of the electrolytic aluminum anode carbon residue.

Description

Technical Field

[0001] The present invention relates to the technical field of electrolytic aluminum anode carbon slag treatment, and in particular to a harmless treatment device for electrolytic aluminum anode carbon slag. Background Art

[0002] Anode carbon residue from electrolytic aluminum production is an unavoidable solid waste, generating approximately 10-15 kg of waste per ton of aluminum. This residue is primarily generated by uneven combustion and selective oxidation of the carbon anode, leading to the shedding of carbon particles. Due to electrolyte immersion and penetration, the anode carbon residue contains a high electrolyte content, accounting for approximately 60%-70% of the residue's weight. The main components of the residue are cryolite, sub-cryolite, a small amount of aluminum oxide, and calcium fluoride. The primary hazard of anode carbon residue is the presence of fluoride, which, when released into the environment, poses a significant threat to the health and growth of humans, animals, and plants.

[0003] In 2017, my country's electrolytic aluminum production reached approximately 36 million tons, ranking first in the world for 16 consecutive years and accounting for over 50% of my country's total nonferrous metal production. Assuming that every ton of primary aluminum produces 10-15 kg of anode carbon slag, approximately 360,000 to 540,000 tons of anode carbon slag were produced in 2017. Anode carbon slag contains a large amount of recyclable electrolyte and carbon materials. Separating the main products, fluoride salts and carbon powder, will have significant economic and environmental benefits. The resource utilization of anode carbon slag is in line with the national development strategy of energy conservation, emission reduction, and recycling.

[0004] There are many methods for treating anode carbon slag at present. Some use it as fuel, and all the electrolytes contained in it enter the ash, which not only affects the environment with fluorides in the carbon slag, but also wastes valuable electrolytes. Some also use roasting and flotation methods to treat anode carbon slag. The flotation method obtains carbon materials and electrolytes. The flotation method is suitable for selecting mineral particles of 0.5mm to 10um. However, the volume of electrolytic aluminum anode carbon slag is relatively large. Even after crushing before treatment, its volume is difficult to meet the requirements of the flotation method, resulting in low purity of carbon materials and electrolytes obtained by flotation. The obtained carbon material contains electrolyte, and due to insufficient purity, it cannot be used as return material. The obtained electrolyte contains carbon and cannot be returned to the electrolysis workshop for use, which directly affects the subsequent harmless treatment process of electrolytic aluminum anode carbon slag. Therefore, we propose a harmless treatment device for electrolytic aluminum anode carbon slag to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to solve the problem in the prior art that after the electrolytic aluminum anode carbon slag is crushed, its volume is difficult to meet the requirements of the flotation method, resulting in the carbon material and electrolyte obtained by flotation being of low purity, which will directly affect the subsequent harmless treatment process of the electrolytic aluminum anode carbon slag. A harmless treatment device for electrolytic aluminum anode carbon slag is proposed.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a harmless treatment device for electrolytic aluminum anode carbon slag, comprising a primary conveying device and a secondary conveying device connected to the primary conveying device, a treatment outer box is provided on one side of the secondary conveying device, a plurality of first mounting brackets are fixedly connected to the top of the treatment outer box, and the plurality of first mounting brackets are commonly connected to the same discharge box corresponding to the discharge port of the secondary conveying device, a first discharge pipe is connected to the bottom of the discharge box, a second discharge pipe is rotatably connected to the bottom of the first discharge pipe, a first driving mechanism for driving the second discharge pipe to rotate is installed on the top of the treatment outer box, a treatment inner box is rotatably connected to the inner wall of the treatment outer box, and a second driving mechanism for driving the treatment inner box to rotate is installed on the side wall of the treatment outer box The bottom of the second material discharge pipe passes through the processing outer box and the processing inner box and is connected to a spiral material guide pipe, the spiral material guide pipe is connected to a plurality of annular grinding pipes arranged equidistantly along the height direction of the processing inner box through a connecting bracket, the annular grinding pipe is connected to the spiral material guide pipe through a plurality of connecting pipes, and the side wall of the processing inner box is installed with a plurality of grinding mechanisms that correspond to the annular grinding pipes and are used in conjunction with the annular grinding pipes; the bottom end of the spiral material guide pipe is connected to the third material discharge pipe, the bottom of the third material discharge pipe downwardly passes through the processing inner box and is connected to the fourth material discharge pipe, the bottom of the processing outer box is fixedly connected to an inclined material guide plate, the inner bottom of the processing outer box is penetrated by a discharge hole corresponding to the inclined material guide plate, and the fourth material discharge pipe is connected to the feed port of the primary conveying device through an overflow return mechanism.

[0007] As a further description of the above technical solution:

[0008] The first driving mechanism includes a mounting base fixedly mounted on the outer side wall of one of the first mounting frames, a first driving motor fixedly mounted on the lower surface of the mounting base, a driving end of the first driving motor fixedly connected to a first driving shaft, a first transmission gear fixedly sleeved on the outer surface of the first driving shaft, a second transmission gear fixedly sleeved on the outer surface of the second discharge pipe, and the second transmission gear is meshed with the first transmission gear.

[0009] As a further description of the above technical solution:

[0010] The outer side wall of the discharge box is fixedly connected to a stirring motor, the driving end of the stirring motor is fixedly connected to a stirring shaft, the end of the stirring shaft away from the stirring motor extends through the inside of the discharge box and a plurality of stirring rods are fixedly installed on the outer side wall thereof.

[0011] As a further description of the above technical solution:

[0012] The outer side wall of the processing inner box is fixedly connected to a plurality of movable mounting rods, the inner surface of the processing outer box is fixedly connected to a mounting positioning ring, the inner surface of the mounting positioning ring is provided with an arc groove, and the ends of the plurality of movable mounting rods away from the processing inner box are all slidably mounted on the inner side wall of the arc groove.

[0013] As a further description of the above technical solution:

[0014] The second driving mechanism includes a second driving motor fixedly installed on the top of the processing outer box, the driving end of the second driving motor is fixedly connected to the second driving shaft, the end of the second driving shaft away from the second driving motor downwardly penetrates the processing outer box and is fixedly sleeved with a third transmission gear, and a fixed inner gear ring is fixedly installed on the top of the processing inner box, and the third transmission gear is meshed with the fixed inner gear ring.

[0015] As a further description of the above technical solution:

[0016] The connecting bracket includes a central vertical rod and multiple connecting support rods fixedly installed on the outer surface of the central vertical rod. The ends of the multiple connecting support rods away from the central vertical rod are respectively fixedly connected to the inner surfaces of the corresponding annular grinding tubes, and the upper and lower ends of the central vertical rod are respectively fixedly connected to the top and bottom of the spiral material guide tube.

[0017] As a further description of the above technical solution:

[0018] The grinding mechanism includes annular grinding plates arranged at the top and bottom of the annular grinding tube, and the annular grinding plates are fixedly installed on the inner wall of the processing inner box. A plurality of overflow holes are equidistantly opened on the circumference of the outer surface of the annular grinding tube, and the overflow holes are located between the corresponding two annular grinding plates. A plurality of grinding filter plates are passed through and fixedly installed on the outer wall of the processing inner box, and the positions of the grinding filter plates correspond one-to-one to the positions of the annular grinding tubes.

[0019] As a further description of the above technical solution:

[0020] An L-shaped mounting plate is fixedly connected to the outer side wall of the processing outer box, and a horizontally arranged push-pull cylinder is fixedly installed on the outer side wall of the L-shaped mounting plate. The push-pull cylinder passes through the processing outer box and is fixedly connected to the processing outer box. The piston end of the push-pull cylinder is located in the processing outer box and its piston end is fixedly connected to a vertically arranged second mounting bracket, and a plurality of soft cleaning brushes for cleaning the ground filter plate are fixedly installed on the outer side wall of the second mounting bracket.

[0021] As a further description of the above technical solution:

[0022] The bottom of the processing outer box is arranged horizontally, the outer side wall of the fourth discharge pipe is fixedly connected with a horizontal connecting plate, the end of the horizontal connecting plate away from the fourth discharge pipe is fixedly connected with an overflow brush plate, and the overflow brush plate contacts the bottom of the processing outer box.

[0023] As a further description of the above technical solution:

[0024] The overflow return mechanism includes an overflow return pipe that passes through the processing outer box and is fixedly connected to the processing outer box. The top of the overflow return pipe is connected to the fourth discharge pipe and is rotatably connected to the fourth discharge pipe. A three-stage conveying device is provided between the end of the overflow return pipe away from the fourth discharge pipe and the first-stage conveying device. The feed port of the three-stage conveying device corresponds to the discharge port of the overflow return pipe, and the discharge port of the three-stage conveying device is connected to the feed port of the first-stage conveying device through the overflow derivation pipe.

[0025] The present invention has the following beneficial effects:

[0026] 1. Compared with the existing technology, the harmless treatment device for electrolytic aluminum anode carbon residue, through the mutual cooperation among the treatment outer box, the treatment inner box, the first drive mechanism, the second drive mechanism, the spiral guide pipe, the annular grinding pipe, the grinding mechanism and the inclined guide plate, after the electrolytic aluminum anode carbon residue is discharged through the overflow hole, the rotating annular grinding pipe cooperates with the grinding mechanism to grind the carbon residue, and the ground carbon residue is discharged into the treatment outer box through the grinding filter plate, and then discharged through the inclined guide plate. In this way, the ground carbon residue meets the requirements of the flotation method and is more conducive to the subsequent harmless treatment process of the electrolytic aluminum anode carbon residue.

[0027] 2. Compared with the existing technology, the harmless treatment device for electrolytic aluminum anode carbon slag, through the mutual cooperation between the first discharge pipe, the second discharge pipe, the third discharge pipe, the fourth discharge pipe, the spiral guide pipe, the overflow return pipe, the three-stage conveying device and the overflow outlet pipe, the carbon slag remaining in the spiral guide pipe that has not been ground and crushed is re-transmitted to the first-stage conveying device through the overflow return pipe, the three-stage conveying device and the overflow outlet pipe, and then enters the treatment inner box for grinding and crushing treatment, thereby preventing unqualified carbon slag from entering the subsequent harmless treatment process.

[0028] 3. Compared with the existing technology, the harmless treatment device for electrolytic aluminum anode carbon residue, through the mutual cooperation between the grinding filter plate, L-shaped mounting plate, push-pull cylinder, second mounting frame and cleaning soft brush, when the push-pull cylinder drives the second mounting frame to move, it can drive the cleaning soft brush to contact the grinding filter plate. The rotating grinding filter plate contacts the cleaning soft brush, and the cleaning soft brush can sweep out the carbon residue in the filter holes on the grinding filter plate to prevent the grinding filter plate from being blocked.

[0029] 4. Compared with the existing technology, the harmless treatment device for electrolytic aluminum anode carbon slag, through the mutual cooperation among the fourth discharge pipe, the discharge hole, the inclined guide plate, the horizontal connecting plate and the overflow brush plate, can drive the horizontal connecting plate and the overflow brush plate to rotate when the fourth discharge pipe rotates. The rotating overflow brush plate can sweep the qualified carbon slag after grinding in the outer box, so that the carbon slag can be discharged faster through the discharge hole and the inclined guide plate, thereby preventing the accumulation of carbon slag in the outer box. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic diagram of the three-dimensional structure of a harmless treatment device for electrolytic aluminum anode carbon slag proposed by the present invention;

[0031] Figure 2 This is a schematic diagram of the three-dimensional structure of the treatment outer box in the harmless treatment device for electrolytic aluminum anode carbon slag proposed by the present invention;

[0032] Figure 3 for Figure 2 AA-directed view in the middle;

[0033] Figure 4 This is a top view of the treatment outer box in the harmless treatment device for electrolytic aluminum anode carbon slag proposed by the present invention;

[0034] Figure 5 This is a cross-sectional view of a treatment outer box in a harmless treatment device for electrolytic aluminum anode carbon slag proposed by the present invention;

[0035] Figure 6 This is a schematic diagram of the connection structure between the discharge box and the treatment inner box in the harmless treatment device for electrolytic aluminum anode carbon slag proposed by the present invention;

[0036] Figure 7 This is a schematic diagram of the internal structure of a feed box in a harmless treatment device for electrolytic aluminum anode carbon slag proposed by the present invention;

[0037] Figure 8 This is a schematic diagram of the connection structure between the push-pull cylinder and the cleaning soft brush in the harmless treatment device for electrolytic aluminum anode carbon slag proposed by the present invention;

[0038] Figure 9 This is a schematic diagram of the inner bottom structure of the treatment outer box in the harmless treatment device for electrolytic aluminum anode carbon slag proposed by the present invention;

[0039] Figure 10 This is a schematic diagram of the internal structure of the treatment inner box in the harmless treatment device for electrolytic aluminum anode carbon slag proposed by the present invention.

[0040] Legend:

[0041] 1. Primary conveying device; 2. Secondary conveying device; 3. Processing outer box; 4. First mounting frame; 5. Discharge box; 6. First discharge pipe; 7. Second discharge pipe; 8. Processing inner box; 9. Spiral guide pipe; 10. Connecting bracket; 1001. Center vertical rod; 1002. Connecting support rod; 11. Annular grinding pipe; 12. Third discharge pipe; 13. Fourth discharge pipe; 14. Inclined guide plate; 15. Mounting base; 16. First drive motor; 17. First drive shaft; 18. First transmission gear; 19. Second transmission gear; 20. Stirring motor; 21. Stirring Mixing shaft; 22. Stirring rod; 23. Mobile mounting rod; 24. Mounting positioning ring; 25. Arc groove; 26. Second drive motor; 27. Second drive shaft; 28. Third transmission gear; 29. ​​Fixed internal gear ring; 30. Annular grinding plate; 31. Overflow hole; 32. Grinding filter plate; 33. L-shaped mounting plate; 34. Push-pull cylinder; 35. Second mounting bracket; 36. Cleaning soft brush; 37. Horizontal connecting plate; 38. Overflow brush plate; 39. Discharge hole; 40. Overflow return pipe; 41. Three-stage conveying device; 42. Overflow outlet pipe; 43. Connecting conduit. DETAILED DESCRIPTION

[0042] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0043] Reference Figures 1-10 The present invention provides a harmless treatment device for electrolytic aluminum anode carbon slag: it includes a primary conveying device 1 and a secondary conveying device 2 connected to the primary conveying device 1, a processing outer box 3 is provided on one side of the secondary conveying device 2, and a plurality of first mounting frames 4 are fixedly connected to the top of the processing outer box 3, and the plurality of first mounting frames 4 are commonly connected to the same discharge box 5 corresponding to the discharge port of the secondary conveying device 2, and a stirring motor 20 is fixedly connected to the outer wall of the discharge box 5, and a stirring shaft 21 is fixedly connected to the driving end of the stirring motor 20, and the stirring shaft 21 extends through the interior of the discharge box 5 at one end away from the stirring motor 20 and a plurality of stirring rods 22 are fixedly installed on the outer wall of the peripheral side. After the electrolytic aluminum anode carbon slag to be ground enters the discharge box 5, the stirring motor 20 is started to drive the stirring shaft 21 and the stirring rod 22 to rotate, and the rotating stirring rod 22 can prevent the electrolytic aluminum anode carbon slag from accumulating in the discharge box 5.

[0044] Among them, the bottom of the discharge box 5 is connected to the first discharge pipe 6, the bottom of the first discharge pipe 6 is rotatably connected to the second discharge pipe 7, and the top of the processing outer box 3 is installed with a first driving mechanism for driving the second discharge pipe 7 to rotate. The first driving mechanism includes a mounting seat 15 fixedly installed on the outer side wall of one of the first mounting frames 4, and a first driving motor 16 is fixedly installed on the lower surface of the mounting seat 15. The driving end of the first driving motor 16 is fixedly connected to the first driving shaft 17, and the outer surface of the first driving shaft 17 is fixedly sleeved with a first transmission gear 18, and the outer surface of the second discharge pipe 7 is fixedly sleeved with a second transmission gear 19, and the second transmission gear 19 is meshed with the first transmission gear 18.

[0045] Among them, the inner wall of the processing outer box 3 is rotatably connected to the processing inner box 8, and the outer side wall of the processing inner box 8 is fixedly connected to multiple movable mounting rods 23. The inner surface of the processing outer box 3 is fixedly connected to a mounting positioning ring 24, and the inner surface of the mounting positioning ring 24 is provided with an arc groove 25. The ends of the multiple movable mounting rods 23 away from the processing inner box 8 are all slidably installed on the inner wall of the arc groove 25. When the processing inner box 8 rotates, the multiple movable mounting rods 23 are driven to rotate. The movement of the movable mounting rods 23 in the arc groove 25 can ensure the stability of the processing inner box 8 during rotation.

[0046] A second driving mechanism for driving the processing inner box 8 to rotate is installed on the side wall of the processing outer box 3. The second driving mechanism includes a second driving motor 26 fixedly installed on the top of the processing outer box 3. The driving end of the second driving motor 26 is fixedly connected to the second driving shaft 27. The end of the second driving shaft 27 away from the second driving motor 26 downwardly penetrates the processing outer box 3 and is fixedly sleeved with a third transmission gear 28. A fixed inner gear ring 29 is fixedly installed on the top of the processing inner box 8, and the third transmission gear 28 is meshed with the fixed inner gear ring 29.

[0047] Among them, the bottom of the second discharge pipe 7 passes through the processing outer box 3 and the processing inner box 8 and is connected to a spiral guide pipe 9. The spiral guide pipe 9 is connected to a plurality of annular grinding tubes 11 arranged at equal distances along the height direction of the processing inner box 8 through a connecting bracket 10. The annular grinding tubes 11 are connected to the spiral guide pipe 9 through a plurality of connecting conduits 43. The connecting bracket 10 includes a central vertical rod 1001 and a plurality of connecting support rods 1002 fixedly installed on the outer surface of the central vertical rod 1001. The plurality of connecting support rods 1002 are fixedly connected to the inner surfaces of the corresponding annular grinding tubes 11 at one end away from the central vertical rod 1001. The upper and lower ends of the central vertical rod 1001 are fixedly connected to the top and bottom of the spiral guide pipe 9 respectively. When the second discharge pipe 7 rotates, the spiral guide pipe 9 can be driven to rotate. The spiral guide pipe 9 then drives each annular grinding tube 11 to rotate synchronously through the connecting bracket 10, so that the annular grinding tubes 11 can stably perform the electrolytic aluminum anode carbon slag grinding operation.

[0048] Among them, the side wall of the processing inner box 8 is equipped with multiple grinding mechanisms that correspond to the annular grinding tubes 11 one by one; the grinding mechanism includes annular grinding plates 30 arranged at the top and bottom of the annular grinding tubes 11, and the annular grinding plates 30 are fixedly installed on the inner side wall of the processing inner box 8. A plurality of overflow holes 31 are equidistantly opened on the outer surface of the annular grinding tube 11, and the overflow holes 31 are located between the corresponding two annular grinding plates 30. A plurality of grinding filter plates 32 are fixedly installed on the outer side wall of the processing inner box 8, and the grinding filter plates 32 are located at the same position as the annular grinding tubes 11. The positions of the annular grinding tubes 11 correspond one to one, and the electrolytic aluminum anode carbon slag to be ground in the annular grinding tube 11 can be discharged through the overflow hole 31, so that the electrolytic aluminum anode carbon slag is located between the annular grinding plate 30 and the two annular grinding plates 30. As the annular grinding plates 30 continue to rotate, the electrolytic aluminum anode carbon slag can be ground and crushed. At the same time, filter holes are evenly arranged on the grinding filter plate 32, and the inner diameter of the filter holes meets the carbon slag particle size requirement required by the flotation method, so that the electrolytic aluminum anode carbon slag discharged through the filter holes can be directly subjected to subsequent harmless treatment.

[0049] An L-shaped mounting plate 33 is fixedly connected to the outer side wall of the treatment outer box 3, and a horizontally arranged push-pull cylinder 34 is fixedly installed on the outer side wall of the L-shaped mounting plate 33. The push-pull cylinder 34 passes through the treatment outer box 3 and is fixedly connected to the treatment outer box 3. The piston end of the push-pull cylinder 34 is located in the treatment outer box 3 and its piston end is fixedly connected to a vertically arranged second mounting bracket 35. A plurality of cleaning soft brushes 36 for cleaning the grinding filter plate 32 are fixedly installed on the outer side wall of the second mounting bracket 35. When the push-pull cylinder 34 drives the second mounting bracket 35 to move, it can drive the cleaning soft brush 36 to contact the outer surface of the grinding filter plate 32. The rotating grinding filter plate 32 contacts the cleaning soft brush 36. The cleaning soft brush 36 can sweep out the carbon residue in the filter holes on the grinding filter plate 32 to prevent the filter holes on the grinding filter plate 32 from being blocked.

[0050] Among them, the bottom end of the spiral guide pipe 9 is connected to the third discharge pipe 12, the bottom of the third discharge pipe 12 passes downward through the processing inner box 8 and is connected to the fourth discharge pipe 13, the bottom of the processing outer box 3 is horizontally arranged, and the outer side wall of the fourth discharge pipe 13 is fixedly connected to a horizontal connecting plate 37, and the horizontal connecting plate 37 is fixedly connected to an overflow brush plate 38 at one end away from the fourth discharge pipe 13. The overflow brush plate 38 is in contact with the bottom of the processing outer box 3. When the fourth discharge pipe 13 rotates, the horizontal connecting plate 37 and the overflow brush plate 38 can be driven to rotate. The rotating overflow brush plate 38 can sweep the qualified carbon slag after grinding in the processing outer box 3, so that the carbon slag can be discharged faster through the discharge hole 39 and the inclined guide plate 14.

[0051] The bottom of the processing outer box 3 is fixedly connected to an inclined material guide plate 14, and the bottom of the processing outer box 3 is penetrated by a discharge hole 39 corresponding to the inclined material guide plate 14. The fourth discharge pipe 13 is connected to the feed port of the primary conveying device 1 through an overflow return mechanism. The overflow return mechanism includes an overflow return pipe 40 that penetrates the processing outer box 3 and is fixedly connected to the processing outer box 3. The top of the overflow return pipe 40 is connected to the fourth discharge pipe 13 and is rotatably connected to the fourth discharge pipe 13. The end of the overflow return pipe 40 away from the fourth discharge pipe 13 is connected to the primary conveying device 1 A three-stage conveying device 41 is provided in between, and the feed port of the three-stage conveying device 41 corresponds to the discharge port of the overflow return pipe 40, and the discharge port of the three-stage conveying device 41 is connected to the feed port of the first-stage conveying device 1 through the overflow outlet pipe 42. The unground carbon slag remaining in the spiral guide pipe 9 is re-transmitted to the first-stage conveying device 1 through the overflow return pipe 40, the three-stage conveying device 41 and the overflow outlet pipe 42, and then enters the processing inner box 3 for grinding and crushing processing, thereby realizing the cyclic crushing and grinding processing of unqualified carbon slag and reducing the waste of carbon slag.

[0052] The present invention can be explained through the following operation mode:

[0053] During use, the electrolytic aluminum anode carbon slag to be ground enters the primary conveying device 1, and the electrolytic aluminum anode carbon slag in the primary conveying device 1 is conveyed to the discharge box 5 through the secondary conveying device 2. Then, after the stirring motor 20 is started, the stirring rod 22 is driven to rotate through the stirring shaft 21. The rotating stirring rod 22 stirs the electrolytic aluminum anode carbon slag in the discharge box 5, accelerating the electrolytic aluminum anode carbon slag to enter the first discharge pipe 6.

[0054] The electrolytic aluminum anode carbon slag in the first discharge pipe 6 then enters the spiral guide pipe 9 through the second discharge pipe 7. The electrolytic aluminum anode carbon slag in the spiral guide pipe 9 then enters each annular grinding pipe 11 through the connecting conduit 43. The first drive motor 16 is turned on. The first drive motor 16 drives the first transmission gear 18 to rotate through the first drive shaft 17. The first transmission gear 18 then drives the second discharge pipe 7 to rotate through the second transmission gear 19 meshing therewith. The second discharge pipe 7 then drives the spiral guide pipe 9 to rotate. The rotating spiral guide pipe 9 then drives the annular grinding pipe 11 to rotate through the connecting bracket 10. At this time, the electrolytic aluminum anode carbon slag in the annular grinding pipe 11 is discharged through multiple overflow holes 31 to between the corresponding annular grinding pipe 11 and the annular grinding plate 30. As the annular grinding pipe 11 continues to rotate, the annular grinding pipe 11 and the annular grinding plate 30 cooperate to grind and crush the electrolytic aluminum anode carbon slag.

[0055] The crushed and ground electrolytic aluminum anode carbon slag is discharged into the processing outer box 3 through the filter holes on the grinding filter plate 32. When the spiral guide pipe 9 rotates, the third discharge pipe 12 also drives the fourth discharge pipe 13 to rotate, and the fourth discharge pipe 13 drives the horizontal connecting plate 37 and the overflow brush plate 38 to rotate. The rotating overflow brush plate 38 sweeps the crushed electrolytic aluminum anode carbon slag in the processing outer box 3, so that the electrolytic aluminum anode carbon slag that meets the flotation processing requirements is discharged outward through the discharge hole 39 and the inclined guide plate 14.

[0056] The electrolytic aluminum anode carbon slag that has not been ground and crushed remaining in the spiral guide tube 9 enters the overflow return pipe 40 through the third discharge pipe 12 and the fourth discharge pipe 13. The electrolytic aluminum anode carbon slag in the overflow return pipe 40 then enters the primary conveying device 1 through the third conveying device 41 and the overflow outlet pipe 42, so that the electrolytic aluminum anode carbon slag that has not been crushed can enter the discharge box 5 again for subsequent crushing and grinding processing.

[0057] In addition, the push-pull cylinder 34 can also be started, and the push-pull cylinder 34 pushes the second mounting bracket 35 and the cleaning soft brush 36 to move until the cleaning soft brush 36 contacts the corresponding grinding filter plate 32, and then the second drive motor 26 is started. The second drive motor 26 drives the third transmission gear 28 to rotate through the second drive shaft 27, and the third transmission gear 28 then drives the processing inner box 8 to rotate as a whole under the drive of the fixed inner gear ring 29 engaged therewith, that is, at this time the grinding filter plate 32 starts to rotate, and the rotating grinding filter plate 32 contacts the cleaning soft brush 36, and the cleaning soft brush 36 can sweep out the carbon residue in the filter holes on the grinding filter plate 32. After the filter holes of the grinding filter plate 32 are cleaned, the second drive motor 26 is turned off, and then the push-pull cylinder 34 is started in the reverse direction. The push-pull cylinder 34 pulls the second mounting bracket 35 and the cleaning soft brush 36 to move until the cleaning soft brush 36 is separated from the grinding filter plate 32.

[0058] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A harmless treatment device for electrolytic aluminum anode carbon slag, comprising a primary conveying device (1) and a secondary conveying device (2) connected to the primary conveying device (1), wherein a treatment outer box (3) is provided on one side of the secondary conveying device (2), characterized in that: The top of the processing outer box (3) is fixedly connected to a plurality of first mounting frames (4), and the plurality of first mounting frames (4) are commonly connected to a same discharge box (5) corresponding to the discharge port of the secondary conveying device (2). The bottom of the discharge box (5) is connected to a first discharge pipe (6), and the bottom of the first discharge pipe (6) is rotatably connected to a second discharge pipe (7). The top of the processing outer box (3) is equipped with a first driving mechanism for driving the second discharge pipe (7) to rotate. The inner wall of the processing outer box (3) is rotatably connected to the processing inner box (8), and the side wall of the processing outer box (3) is equipped with a second driving mechanism for driving the processing inner box (8) to rotate. The bottom of the second discharge pipe (7) passes through the processing outer box (3) and the processing inner box (8) and is connected to a spiral guide pipe (9). The spiral guide pipe (9) is connected to the processing outer box (3) and the processing inner box (8). ) is connected to a plurality of annular grinding tubes (11) arranged at equal distances along the height direction of the processing inner box (8), the annular grinding tubes (11) are connected to the spiral guide tube (9) through a plurality of connecting conduits (43), and the side wall of the processing inner box (8) is installed with a plurality of grinding mechanisms corresponding to the annular grinding tubes (11) for use; the bottom end of the spiral guide tube (9) is connected to a third discharge tube (12), the bottom of the third discharge tube (12) passes through the processing inner box (8) downward and is connected to a fourth discharge tube (13), the bottom of the processing outer box (3) is fixedly connected to an inclined guide plate (14), the bottom of the processing outer box (3) is penetrated by a discharge hole (39) corresponding to the inclined guide plate (14), and the fourth discharge tube (13) is connected to the feed port of the primary conveying device (1) through an overflow return mechanism; The grinding mechanism comprises annular grinding plates (30) arranged at the top and bottom of an annular grinding tube (11), the annular grinding plates (30) being fixedly mounted on the inner side wall of the processing inner box (8), a plurality of overflow holes (31) being equally spaced on the circumference of the outer surface of the annular grinding tube (11), the overflow holes (31) being located between two corresponding annular grinding plates (30), a plurality of grinding filter plates (32) being passed through and fixedly mounted on the outer side wall of the processing inner box (8), the positions of the grinding filter plates (32) corresponding to the positions of the annular grinding tube (11); An L-shaped mounting plate (33) is fixedly connected to the outer wall of the treatment outer box (3), and a horizontally arranged push-pull cylinder (34) is fixedly installed on the outer wall of the L-shaped mounting plate (33). The push-pull cylinder (34) passes through the treatment outer box (3) and is fixedly connected to the treatment outer box (3). The piston end of the push-pull cylinder (34) is located in the treatment outer box (3) and is fixedly connected to a vertically arranged second mounting bracket (35). A plurality of cleaning soft brushes (36) for cleaning the ground filter plate (32) are fixedly installed on the outer wall of the second mounting bracket (35); The bottom of the processing outer box (3) is arranged horizontally, and the outer side wall of the fourth discharge pipe (13) is fixedly connected with a horizontal connecting plate (37), and the end of the horizontal connecting plate (37) away from the fourth discharge pipe (13) is fixedly connected with an overflow brush plate (38), and the overflow brush plate (38) is in contact with the bottom of the processing outer box (3); The overflow return mechanism includes an overflow return pipe (40) that passes through the processing outer box (3) and is fixedly connected to the processing outer box (3); the top of the overflow return pipe (40) is connected to the fourth discharge pipe (13) and is rotatably connected to the fourth discharge pipe (13); a third-level conveying device (41) is provided between the end of the overflow return pipe (40) away from the fourth discharge pipe (13) and the first-level conveying device (1); the feed port of the third-level conveying device (41) corresponds to the discharge port of the overflow return pipe (40); and the discharge port of the third-level conveying device (41) is connected to the feed port of the first-level conveying device (1) through the overflow outlet pipe (42).

2. The harmless treatment device for electrolytic aluminum anode carbon slag according to claim 1, characterized in that: The first driving mechanism comprises a mounting seat (15) fixedly mounted on the outer side wall of one of the first mounting frames (4); a first driving motor (16) is fixedly mounted on the lower surface of the mounting seat (15); a driving end of the first driving motor (16) is fixedly connected to a first driving shaft (17); a first transmission gear (18) is fixedly sleeved on the outer surface of the first driving shaft (17); a second transmission gear (19) is fixedly sleeved on the outer surface of the second discharge pipe (7); and the second transmission gear (19) is meshedly connected to the first transmission gear (18).

3. The harmless treatment device for electrolytic aluminum anode carbon slag according to claim 1, characterized in that: The outer wall of the discharge box (5) is fixedly connected to a stirring motor (20), and the driving end of the stirring motor (20) is fixedly connected to a stirring shaft (21). The end of the stirring shaft (21) away from the stirring motor (20) extends through the interior of the discharge box (5) and a plurality of stirring rods (22) are fixedly installed on the outer wall of the peripheral side.

4. The harmless treatment device for electrolytic aluminum anode carbon slag according to claim 1, characterized in that: The outer wall of the processing inner box (8) is fixedly connected to a plurality of movable mounting rods (23), the inner surface of the processing outer box (3) is fixedly connected to a mounting positioning ring (24), the inner surface of the mounting positioning ring (24) is provided with an arc groove (25), and the ends of the plurality of movable mounting rods (23) away from the processing inner box (8) are all slidably mounted on the inner wall of the arc groove (25).

5. The harmless treatment device for electrolytic aluminum anode carbon slag according to claim 1, characterized in that: The second driving mechanism comprises a second driving motor (26) fixedly mounted on the top of the processing outer box (3); a driving end of the second driving motor (26) is fixedly connected to a second driving shaft (27); an end of the second driving shaft (27) away from the second driving motor (26) passes downward through the processing outer box (3) and is fixedly sleeved with a third transmission gear (28); a fixed inner gear ring (29) is fixedly mounted on the top of the processing inner box (8); and the third transmission gear (28) is meshedly connected to the fixed inner gear ring (29).

6. The harmless treatment device for electrolytic aluminum anode carbon slag according to claim 1, characterized in that: The connecting bracket (10) comprises a central vertical rod (1001) and a plurality of connecting rods (1002) fixedly mounted on the outer surface of the central vertical rod (1001), wherein the ends of the plurality of connecting rods (1002) away from the central vertical rod (1001) are respectively fixedly connected to the inner surfaces of corresponding annular grinding tubes (11), and the upper and lower ends of the central vertical rod (1001) are respectively fixedly connected to the top and bottom of the spiral material guide tube (9).

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