A dust separation device for steel mills

Abstract

The present invention relates to the technical field of sorting devices, and provides a sorting device for steel plant dust removal ash, which includes a frame having a discharge groove. A flotation cylinder is arranged on the frame and has a flotation space. The flotation space has a flotation port, and the flotation port communicates with the discharge groove and the flotation space. A crushing and mineralization cylinder is arranged on the flotation cylinder and has a treatment space. The treatment space has a feed port and a discharge port. The discharge port communicates with the treatment space and the flotation space. The discharge port is higher than the flotation port. One end of a high-speed circulation pipeline communicates with the flotation space, and the other end communicates with the treatment space. The end of the high-speed circulation pipeline communicating with the treatment space is a crushing port, and the crushing port faces the inner wall of the crushing and mineralization cylinder. Through the above technical solution, the problem in the prior art that the traditional process flow requires a large number of devices at all levels, the process is complex, and the production efficiency still needs to be improved is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of sorting devices, and more specifically, to a sorting device for dedusting ash in a steel plant. Background Art

[0002] Currently, various treatments are carried out on the dedusting ash. First, the dedusting ash is put into a ball mill to be ground, then mineralized by adding chemicals through a mineralizer, and finally, a flotation process is carried out through a flotation machine, and the next process is carried out; there are some problems in the traditional process flow: a relatively large number of equipment at all levels are required, the energy consumption is high, the process is complex, and the production efficiency still needs to be improved. Summary of the Invention

[0003] The present invention provides a sorting device for dedusting ash in a steel plant, which solves the problems in the related art that the traditional process flow requires a relatively large number of equipment at all levels, the process is complex, and the production efficiency still needs to be improved.

[0004] The technical solution of the present invention is as follows:

[0005] A sorting device for dedusting ash in a steel plant, comprising

[0006] a frame, having a discharge groove,

[0007] a flotation cylinder, arranged on the frame, having a flotation space, the flotation space having a flotation port, the flotation port communicating the discharge groove and the flotation space,

[0008] a crushing and mineralizing cylinder, arranged on the flotation cylinder, having a treatment space, the treatment space having a feed port and a discharge port, the discharge port communicating the treatment space and the flotation space, the discharge port being higher than the flotation port,

[0009] a high-speed circulation pipeline, one end of which communicates with the flotation space and the other end communicates with the treatment space, the end of the high-speed circulation pipeline communicating with the treatment space being a crushing port, the crushing port facing the inner wall of the crushing and mineralizing cylinder.

[0010] As a further technical solution, it further comprises

[0011] a ring-shaped cover, arranged on the discharge port and located in the flotation space,

[0012] a partition board, arranged in the ring-shaped cover, a flotation space being formed between the flotation cylinder, the ring-shaped cover and the partition board, a feed space being formed between the partition board, the ring-shaped cover and the crushing and mineralizing cylinder, the discharge port communicating the treatment space and the feed space, the feed space communicating with the flotation space through an inlet, the flotation port being higher than the partition board,

[0013] A drainage pipeline has one end disposed at the bottom of the partition plate and the other end penetrating through the inner wall of the flotation cylinder and located within the flotation space. The end of the drainage pipeline near the partition plate has a drainage port.

[0014] As a further technical solution, it further includes

[0015] A crushing table is disposed on the inner wall of the crushing and mineralization cylinder, and the crushing port faces the crushing table.

[0016] As a further technical solution, the discharge groove is annular, the flotation ports are fan-shaped and there are several of them, and the several flotation ports are arranged circumferentially along the flotation cylinder.

[0017] As a further technical solution, both the flotation ports and the discharge groove have material guiding inclined surfaces, and it further includes

[0018] Defoaming equipment is disposed on the frame and located within the discharge groove.

[0019] As a further technical solution, the flotation space is conical, and it further includes

[0020] A circulation pump is disposed on the high-speed circulation pipeline.

[0021] As a further technical solution, the crushing table has several mounting through holes, and it further includes

[0022] A rotating shaft is rotatably disposed on the bottom surface of the crushing table,

[0023] A driving member is threadedly connected to the rotating shaft. After the rotating shaft rotates, the driving member approaches or moves away from the crushing table along the axial direction of the rotating shaft,

[0024] A material receiving table is hingedly disposed in the mounting through hole. The material receiving table is fan-shaped, several material receiving tables are arranged circumferentially along the rotating shaft, and the material receiving table has a clearance fit with the mounting through hole. The material receiving table is connected to the driving member through a flexible connecting member, and the driving member is used to drive the material receiving table to rotate after moving along the axial direction of the rotating shaft.

[0025] The working principle and beneficial effects of the present invention are as follows:

[0026] In the present invention, in order to avoid the situation of high energy consumption, complex processes and still need to improve production efficiency caused by connecting various levels of equipment required for various treatments of dust removal ash in sequence, a steel plant dust removal ash separation device is designed.

[0027] The flotation cylinder with a flotation space is arranged on the frame. Its flotation port is connected to the discharge groove and the flotation space on the frame. The dedusted ash undergoes mineralization flotation operation in the flotation space. Since foaming agent and collector need to be added during the above operation, the dedusted ash is fully mixed with them. After the collection is completed, it overflows through the flotation port to the discharge groove and enters the next process. In order to facilitate the crushing of the dedusted ash without using equipment such as ball mills and smoothly add foaming agent, collector, etc. into it, it is designed to set a crushing and mineralization cylinder with a treatment space on the flotation cylinder. One end of the high-speed circulation pipeline is connected to the flotation space, and the other end is connected to the treatment space. The crushing port at its end close to the treatment space faces the inner wall of the crushing and mineralization cylinder. Using water as the medium, the dedusted ash is broken by high-speed collision, which can reduce the slime formation of the dedusted ash and reduce energy consumption. Because the traditional process faces the situation of dust flying, in most cases, the form of spray humidification is used to solve it, but it will cause the dedusted ash to agglomerate, thus affecting the subsequent process treatment. Therefore, using high-speed circulating water to impact and crush the dedusted ash can not only reduce the slime formation of the dedusted ash and reduce energy consumption, but also further facilitate the subsequent process and greatly improve work efficiency.

[0028] The treatment space has a feed port and a discharge port. The discharge port is connected to the treatment space and the flotation space. When filling, it can be filled into the treatment space from the feed port. Before the work starts, components such as dedusted ash, foaming agent, collector, and water are added into the device, and the high-speed circulation pipeline is started to circulate water from the flotation space below back to the treatment space at high speed to complete the crushing operation. At the same time, the dedusted ash is fully mixed with the foaming agent and the collector to complete mineralization. Finally, the bubbles capture and overflow from the flotation port into the discharge groove. Combining the functions of each level of equipment, it greatly reduces energy consumption and improves production efficiency. The dedusted ash can complete multiple operations after being processed by this device. It is designed that the crushing port faces the inner wall of the crushing and mineralization cylinder to prevent the high-speed circulating water from directly hitting the discharge port and transferring to the flotation space when crushing the dedusted ash, skipping the crushing operation and causing the high-speed circulating water to be ineffective.

[0029] It is further designed that the discharge port is higher than the flotation port to prevent the liquid level from being higher than the discharge port when the dedusted ash is fully mixed with the foaming agent and the collector to complete mineralization and is discharged from the flotation port to the next process, resulting in part of it entering the treatment space and being unable to be discharged, and at the same time affecting the normal operation of the operation in the treatment space. The high-speed circulation pipeline can not only circulate water back but also circulate the dedusted ash that is not completely crushed at the bottom of the device back into the treatment space to achieve the crushing operation. Brief Description of the Drawings

[0030] The present invention will be further described in detail below in conjunction with the drawings and specific embodiments.

[0031] Figure 1 It is a schematic structural diagram of a steel plant dedusted ash separation device in the present invention;

[0032] Figure 2 A cross-sectional view of a dust separation device for steel plant dust in the present invention;

[0033] Figure 3 A schematic diagram of the internal structure of a dust separation device for steel plant dust in the present invention in the first case;

[0034] Figure 4 For the present invention Figure 2 An enlarged view of part A in;

[0035] Figure 5 For the present invention Figure 3 An enlarged view of part B in;

[0036] Figure 6 A schematic diagram of the internal structure of a dust separation device for steel plant dust in the present invention in the second case;

[0037] Figure 7 For the present invention Figure 6 An enlarged view of part C in;

[0038] Figure 8 A schematic diagram of the structure of the material receiving table in the present invention;

[0039] Figure 9 For the present invention Figure 8 An enlarged view of part D in;

[0040] In the figure: 1, frame; 2, discharge groove; 3, flotation cylinder; 4, flotation space; 5, flotation port; 6, crushing and mineralization cylinder; 7, treatment space; 8, feed port; 9, discharge port; 10, high-speed circulation pipeline; 11, crushing port; 12, annular cover; 13, partition board; 14, feed space; 15, inlet; 16, drainage pipeline; 17, drainage port; 18, crushing table; 19, guide material inclined plane; 20, defoaming device; 21, circulation pump; 22, installation through hole; 23, rotating shaft; 24, driving part; 25, material receiving table; 26, flexible connecting piece. Detailed implementation manners

[0041] Next, in combination with the embodiments of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the present invention.

[0042] As Figures 1 to 9 shown, this embodiment proposes a dust separation device for steel plant dust, including

[0043] a frame 1, having a discharge groove 2,

[0044] The flotation cylinder 3 is arranged on the frame 1 and has a flotation space 4. The flotation space 4 has a flotation port 5. The flotation port 5 communicates with the discharge groove 2 and the flotation space 4.

[0045] The crushing and mineralization cylinder 6 is arranged on the flotation cylinder 3 and has a processing space 7. The processing space 7 has a feed port 8 and a discharge port 9. The discharge port 9 communicates with the processing space 7 and the flotation space 4. The discharge port 9 is higher than the flotation port 5.

[0046] The high-speed circulation pipeline 10 has one end communicating with the flotation space 4 and the other end communicating with the processing space 7. The end of the high-speed circulation pipeline 10 communicating with the processing space 7 is a crushing port 11, and the crushing port 11 faces the inner wall of the crushing and mineralization cylinder 6.

[0047] In this embodiment, in order to avoid the situation of high energy consumption, complex processes and still need to improve production efficiency caused by the sequential connection of various levels of equipment required for various treatments of the dedusted ash, a steel plant dedusted ash separation device is designed.

[0048] The flotation cylinder 3 with the flotation space 4 is arranged on the frame 1. Its flotation port 5 communicates with the discharge groove 2 on the frame 1 and the flotation space 4. The dedusted ash undergoes mineralization flotation operation in the flotation space 4. Since foaming agent and collector need to be added during the above operation, the dedusted ash is fully mixed with the two. After the collection is completed, it overflows to the discharge groove 2 through the flotation port 5 and enters the next process. In order to facilitate the crushing of the dedusted ash and without using equipment such as ball mills, and smoothly add foaming agent and collector into it, it is designed to set the crushing and mineralization cylinder 6 with the processing space 7 on the flotation cylinder 3. One end of the high-speed circulation pipeline 10 communicates with the flotation space 4 and the other end communicates with the processing space 7. The crushing port 11 at its end close to the processing space 7 faces the inner wall of the crushing and mineralization cylinder 6. Using water as the medium, the dedusted ash is broken by high-speed collision, which can reduce the slime of the dedusted ash and reduce energy consumption. Because the traditional process faces the situation of dust flying, in most cases, the form of spraying and humidifying is used to solve it, but it will cause the dedusted ash to agglomerate, which will affect the subsequent process treatment. Therefore, using high-speed circulating water to impact and crush the dedusted ash can not only reduce the slime of the dedusted ash and reduce energy consumption, but also further facilitate the subsequent process and greatly improve the work efficiency.

[0049] The processing space 7 has a feed inlet 8 and a discharge outlet 9. The discharge outlet 9 communicates the processing space 7 and the flotation space 4. When filling, materials can be filled into the processing space 7 from the feed inlet 8. Before the operation starts, components such as dust removal ash, foaming agent, collector, and water are added into the device, and the high-speed circulation pipeline 10 is started to circulate water at high speed from the flotation space 4 located below back to the processing space 7 to complete the crushing operation. At the same time, the dust removal ash is fully mixed with the foaming agent and the collector to complete mineralization. Finally, the bubbles capture and overflow from the flotation port 5 into the discharge groove 2. Combining the functions of each level of equipment greatly reduces energy consumption and improves production efficiency. The dust removal ash can complete various operations through the treatment of this device; the designed crushing port 11 faces the inner wall of the crushing and mineralization cylinder 6 to prevent the high-speed circulating water from directly hitting the discharge outlet 9 and transferring to the flotation space 4 when crushing the dust removal ash, skipping the crushing operation and causing the high-speed circulating water to be ineffective.

[0050] Further, the discharge outlet 9 is designed to be higher than the flotation port 5 to prevent the liquid level from being higher than the discharge outlet 9 when the dust removal ash is fully mixed with the foaming agent and the collector to complete mineralization and is discharged from the flotation port 5 to the next process, resulting in part of it entering the processing space 7 and being unable to be discharged, and at the same time affecting the normal operation of the operations in the processing space 7. The high-speed circulation pipeline can not only circulate water back but also circulate the dust removal ash that is not completely crushed at the bottom of the device back into the processing space 7 to achieve the crushing operation.

[0051] Furthermore, it also includes

[0052] a ring-shaped cover 12, which is arranged on the discharge outlet 9 and is located in the flotation space 4,

[0053] a partition plate 13, which is arranged inside the ring-shaped cover 12. The flotation space 4 is formed between the flotation cylinder 3, the ring-shaped cover 12, and the partition plate 13. The feed space 14 is formed between the partition plate 13, the ring-shaped cover 12, and the crushing and mineralization cylinder 6. The discharge outlet 9 communicates the processing space 7 and the feed space 14. The feed space 14 communicates with the flotation space 4 through the inlet 15. The flotation port 5 is higher than the partition plate 13.

[0054] a drainage pipeline 16, one end of which is arranged at the bottom of the partition plate 13, and the other end penetrates the inner wall of the flotation cylinder 3 and is located in the flotation space 4. The end of the drainage pipeline 16 close to the partition plate 13 has a drainage port 17.

[0055] In this embodiment, an annular cover 12 is designed to be installed at the discharge port 9, and a partition 13 is installed inside the annular cover 12. When the entire device is working, the liquid level inside it has been rising. If the circulating water inside is not recovered in time, the device will not be able to be used, but the foam cannot be lost either. The foam is generally above the water. Therefore, to solve this technical problem, a drainage pipeline 16 is designed to be installed at the bottom of the partition 13. The other end of the drainage pipeline 16 penetrates the inner wall of the flotation cylinder 3, and the flotation port 5 is higher than the partition 13. When the liquid level inside the device slowly rises and passes through the partition 13, the foam and other substances on the upper layer of the liquid will not directly be discharged from the flotation port 5, but will first pass through the partition 13 and then flow out from the flotation port 5. One end of the drainage pipeline 16 close to the partition 13 has a drainage port 17. Since a flotation space 4 is formed between the flotation cylinder 3, the annular cover 12 and the partition 13, the annular cover 12 plays a role in blocking the foam around the drainage port 17, trying to avoid a large amount of foam being discharged from the drainage port 17 and controlling a very small amount of foam to flow out. As the liquid level gradually rises and the water level exceeds the partition 13, the excess circulating water will be discharged to the outside through the drainage port 17.

[0056] And in order for the above workpiece not to affect the communication between the processing space 7 and the flotation space 4, it is designed that a feeding space 14 is formed between the partition 13, the annular cover 12 and the broken mineralization cylinder 6. The discharge port 9 communicates the processing space 7 and the feeding space 14, and the feeding space 14 communicates with the flotation space 4 through the inlet 15. The material sequentially passes through the discharge port 9, the feeding space 14 and the inlet 15, and finally flows to the flotation space 4.

[0057] Furthermore, it also includes

[0058] a crushing table 18, which is arranged on the inner wall of the broken mineralization cylinder 6, and the crushing port 11 faces the crushing table 18.

[0059] Furthermore, the crushing table 18 has a number of installation through holes 22, and it also includes

[0060] a rotating shaft 23, which is rotatably arranged on the bottom surface of the crushing table 18,

[0061] a driving part 24, which is threadedly connected to the rotating shaft 23. After the rotating shaft 23 rotates, the driving part 24 moves closer to or away from the crushing table 18 along the axial direction of the rotating shaft 23,

[0062] a material receiving table 25, which is hingedly arranged in the installation through holes 22. The material receiving table 25 is fan-shaped. A number of the material receiving tables 25 are arranged circumferentially along the rotating shaft 23, and the material receiving table 25 has a clearance fit with the installation through holes 22. The material receiving table 25 is connected to the driving part 24 through a flexible connecting piece 26. After the driving part 24 moves along the axial direction of the rotating shaft 23, it is used to drive the material receiving table 25 to rotate.

[0063] In this embodiment, in order to improve the crushing effect in the processing space 7 and facilitate the handling of various materials, a crushing table 18 is installed on the inner wall of the crushing mineralization cylinder 6 , and the crushing opening 11 faces the crushing table 18 .

[0064] The crushing table 18 is further designed to have a plurality of mounting through holes 22 arranged along the circumference of a rotating shaft 23 rotatably arranged on the bottom surface of the crushing table 18. The position of the rotating shaft 23 is designed to prevent high-speed circulating water and incompletely crushed dust from approaching the crushing table 18 from above the crushing table 18 during crushing in the processing space 7, thereby avoiding the situation where the rotating shaft 23 is damaged. The fan-shaped receiving platform 25 is hingedly arranged in the mounting through hole 22 and connected to the driving member 24 through a flexible connecting member 26. The driving member 24 is threadedly connected to the rotating shaft 23. When the rotating shaft 23 rotates and drives the driving member 24 to move along its axial direction, due to the pulling force of the flexible connecting member 26, the driving member 24 is connected to the rotating shaft 23. The force is applied, and several receiving platforms rotate to form a horn-like structure. When the crushing port 11 sprays water and dust, they first rush toward the horn structure, and the interaction between the materials at each level becomes more intense, further improving the crushing processing effect. At the same time, the receiving platform 25 can be made to swing back and forth to further improve the effect. When discharging the material, the receiving platform 25 can be swung back to the original position flush with the crushing table 18 to prevent the material from failing to enter the flotation space 4 smoothly. The receiving platform 25 is designed to have a clearance fit with the mounting through hole 22 to prevent the receiving platform 25 from being stuck in the mounting through hole 22 after rotation, and the receiving platform 25 cannot be reset no matter how the flexible connector 26 works.

[0065] Furthermore, the discharge groove 2 is annular, and the flotation ports 5 are sector-shaped, and there are a plurality of them, and the plurality of flotation ports 5 are arranged along the circumference of the flotation cylinder 3 .

[0066] Furthermore, the flotation port 5 and the discharge groove 2 both have a guide slope 19, and also include

[0067] The defoaming device 20 is arranged on the frame 1 and is located in the discharge groove 2 .

[0068] Furthermore, the flotation space 4 is conical and also includes

[0069] The circulation pump 21 is arranged on the high-speed circulation pipeline 10 .

[0070] In this embodiment, in order to improve the flotation discharge efficiency, the discharge groove 2 is designed to be annular, and a plurality of fan-shaped flotation ports 5 are arranged along the circumference of the flotation cylinder 3, and the flotation ports 5 and the discharge groove 2 both have a material guiding slope 19. A defoaming device 20 is further provided in the discharge groove 2 to defoam a large amount of foam therein to facilitate subsequent processing of the material. At the same time, a circulation pump 21 is provided on the high-speed circulation pipeline 10 to provide power, and the flotation space 4 is conical, which is convenient for recycling all the materials.

[0071] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A dust separation device for steel mills, characterized in that, including a frame (1) having a discharge groove (2), a flotation cylinder (3) provided on the frame (1), having a flotation space (4), the flotation space (4) having a flotation port (5), the flotation port (5) communicating the discharge groove (2) and the flotation space (4), a crushing and mineralizing cylinder (6) provided on the flotation cylinder (3), having a processing space (7), the processing space (7) having a feed port (8) and a discharge port (9), the discharge port (9) communicating the processing space (7) and the flotation space (4), the discharge port (9) being higher than the flotation port (5), a high-speed circulation pipeline (10) with one end communicating the flotation space (4) and the other end communicating the processing space (7), the end of the high-speed circulation pipeline (10) communicating the processing space (7) being a crushing port (11), the crushing port (11) facing the inner wall of the crushing and mineralizing cylinder (6), further including an annular cover (12) provided on the discharge port (9) and located within the flotation space (4), a partition (13) provided within the annular cover (12), a flotation space (4) being formed between the flotation cylinder (3), the annular cover (12) and the partition (13), a feed space (14) being formed between the partition (13), the annular cover (12) and the crushing and mineralizing cylinder (6), the discharge port (9) communicating the processing space (7) and the feed space (14), the feed space (14) communicating with the flotation space (4) through an inlet (15), the flotation port (5) being higher than the partition (13), a drainage pipeline (16) with one end provided at the bottom of the partition (13) and the other end passing through the inner wall of the flotation cylinder (3) and located within the flotation space (4), the end of the drainage pipeline (16) near the partition (13) having a drainage port (17), further including a crushing table (18) provided on the inner wall of the crushing and mineralizing cylinder (6), the crushing port (11) facing the crushing table (18), the crushing table (18) having a number of mounting through-holes (22), further including a rotating shaft (23) rotatably provided on the bottom surface of the crushing table (18), a driving member (24) threadedly connected to the rotating shaft (23), after the rotating shaft (23) rotates, the driving member (24) moves axially along the rotating shaft (23) closer to or away from the crushing table (18), a material receiving table (25) hingedly provided within the mounting through-hole (22), the material receiving table (25) being fan-shaped, a number of the material receiving tables (25) being arranged circumferentially along the rotating shaft (23), and the material receiving table (25) having a clearance fit with the mounting through-hole (22), the material receiving table (25) being connected to the driving member (24) through a flexible connecting member (26), the driving member (24) driving the material receiving table (25) to rotate after moving axially along the rotating shaft (23), the annular cover (12) is provided with the inlet (15).

2. The sorting device for steel plant dust removal ash according to claim 1, characterized in that, The discharge groove (2) is annular, the flotation ports (5) are fan-shaped, and there are several of them. The several flotation ports (5) are arranged circumferentially along the flotation cylinder (3).

3. The dust separation device for steel mill dust according to claim 1, characterized in that, Both the flotation ports (5) and the discharge groove (2) have a material guiding inclined surface (19), and further include a defoaming device (20) which is arranged on the frame (1) and is located in the discharge groove (2).

4. The dust separation device for steel plant dust according to claim 1, characterized in that, The flotation space (4) is conical, and further includes a circulation pump (21) which is arranged on the high-speed circulation pipeline (10).

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