Rotary kiln sintering fly ash recycling system

Abstract

The invention relates to the technical field of dedusting ash recycling, and provides a rotary kiln sintering dedusting ash recycling system which comprises two washing tanks and further comprises a hopper, a discharging channel, a material collecting box, a screen, a blow-drying assembly, a purging assembly and a drying mechanism. The hopper on the upper washing tank is communicated with a kiln tail outlet of the rotary kiln, the discharging channel is communicated with the washing tanks, the hopper on the lower washing tank is communicated with the discharging channel on the upper washing tank, the material collecting box is communicated with the discharging channel on the lower washing tank, and the screen is arranged in the washing tanks in a lifting mode. The blow-drying assembly is used for blowing off moisture on the surface of the dedusting ash on the screen, the purging assembly is used for purging the dedusting ash in the rotary kiln, and the drying mechanism is used for drying the dedusting ash in the material collecting box. By means of the technical scheme, the problem that in the prior art, energy is wasted due to the fact that washed dedusting ash is dried is solved.

Description

Technical Field

[0001] The invention relates to the technical field of dust recycling, and in particular to a rotary kiln sintering dust recycling system. Background Art

[0002] Dust ash from steel enterprises refers to dust collected by dust removal equipment such as electrostatic precipitators, gravity dust collectors and bag dust collectors in the production process from sintering to steel rolling. According to incomplete statistics, the total amount of dust ash produced by steel enterprises is about 10% of steel production. The traditional method for dealing with these dust ashes is to add a low proportion of them to the sintering ingredients, while some are used after pre-treatment such as making small balls and pressing. With the development of blast furnace smelting technology, the hazards of potassium, sodium and zinc to blast furnace production have received more and more attention. Many steel mills prohibit the internal recycling of dust ash containing more harmful elements, and choose to pile up or sell them to the outside. Stacking will occupy a lot of land resources, and the price of external sales is low, ranging from tens to one hundred yuan per ton. These two treatment methods do not fundamentally solve the problem. Therefore, many companies study the dust ash reuse system and continue to use the dust ash after treatment.

[0003] At present, in the treatment of sintering machine head ash, local steel mills such as Tianjin, Baotou, Nanjing, Suzhou, Rizhao and Laiwu have invested in water washing and salt extraction projects. In terms of operational results, the potassium and sodium removal rates of sintering machine head ash can reach more than 80%. The machine head ash after removing potassium, sodium and chlorine is returned to sintering for use. The produced potassium chloride, sodium chloride or mixed salt of the two can be sold as products, realizing the comprehensive utilization of sintering machine head ash. The machine head ash needs to be dried after washing. At present, heaters are generally used for drying the machine head ash, resulting in a waste of resources. Therefore, we propose a rotary kiln sintering dust ash recycling system, which can utilize the heat generated in the rotary kiln to assist in drying the dust ash and save energy. Summary of the invention

[0004] The present invention provides a rotary kiln sintering dust recycling system, which solves the problem of energy waste in drying the dust washed with water in the related art.

[0005] The technical solution of the present invention is as follows: A rotary kiln sintering dust recycling system comprises a water washing tank, two of which are provided, and further comprises: A hopper, the hopper is connected to the top of the water washing tank, and the hopper located on the upper water washing tank is connected to the kiln tail outlet of the rotary kiln; A discharge channel, the discharge channel is connected to the water washing tank, and the hopper located on the water washing tank below is connected to the discharge channel located on the water washing tank above; A material collection box, the material collection box is connected to the discharge channel on the water washing tank located below; A screen, the screen can be raised and lowered inside the water washing tank, and there is a gap between the screen and the inner wall of the water washing tank; A drying component, which is used to blow off the moisture on the surface of the dust on the screen, and the drying component includes: A blow-drying pipe, the blow-drying pipe is arranged inside the water washing tank, and the blow-drying pipe is located above the communication position between the discharge channel and the water washing tank; A blow-drying nozzle, the blow-drying nozzle is connected to the blow-drying pipe, and the air outlet of the blow-drying nozzle is arranged downward; A purge assembly, the purge assembly is used to purge the dust inside the rotary kiln, and the purge assembly includes: A heat collecting pipe, the heat collecting pipe is coaxially arranged inside the rotary kiln, the heat collecting pipe is connected to a fan, and the drying pipe is connected to the heat collecting pipe; A purge nozzle, the purge nozzle is connected to the heat collecting pipe; A drying mechanism, the drying mechanism is used to dry the dust in the aggregate box, and the drying mechanism includes: A drying plate, the drying plate being arranged inside the collecting box; A drying pipe is arranged inside the drying plate and is connected to the heat collecting pipe.

[0006] In order to improve the drying effect of the dust in the collection box, two drying plates are provided, and the drying plates are movably arranged inside the collection box.

[0007] In order to further improve the drying effect of the dust in the aggregate box, an auxiliary drying component is also included, and the auxiliary drying component includes: The scraper net is movably arranged inside the collecting box, the scraper net is a hollow structure, and the scraper net is connected to the heat collecting pipe.

[0008] In order to further improve the drying effect of the dust in the aggregate box, it also includes a waste heat recovery bin, which is arranged outside the rotary kiln, the waste heat recovery bin is connected to the air outlet of the fan, and the waste heat recovery bin extends into the aggregate box and is connected to an air outlet pipe.

[0009] In order to facilitate the dust on the screen to enter the interior of the discharge channel, the screen is arranged at an angle, and when the screen is at the highest position, the side with a lower height corresponds to the position of the discharge channel.

[0010] In order to push the dust off the drying plate, a turning assembly is also included, and the turning assembly includes: A movable rack, wherein two movable racks are provided and the movable racks are movably arranged inside the aggregate box; A rotating shaft, the drying plates and the moving racks correspond to each other one by one, the drying plates are rotatably connected to the heat collecting tubes through the rotating shaft, and the rotating shaft is rotatably connected to the moving rack; A driving rod is rotatably arranged on the movable frame, and the driving rod is fixedly connected to the drying plate.

[0011] In order to further assist the falling of dust, a vibration motor is also included. The vibration motor is arranged on the collection box, and the collection box is connected to the water washing tank through a transfer plate.

[0012] The working principle and beneficial effects of the present invention are: 1. In the present invention, the dust produced by the rotary kiln enters the interior of the water washing tank located above through the kiln tail, the dust is washed once, potassium, sodium, sulfur and chlorine in the dust are extracted to make industrial products, and at the same time, the remaining part is sent to the water washing tank located below through the discharge channel through the rising screen for secondary washing, and the elements in the dust are further extracted, and finally the remaining product enters the interior of the aggregate box for collection.

[0013] 2. In the present invention, air is supplied into the heat collecting tube by a fan, the air in the heat collecting tube is heated by a rotary kiln, and the air flow rate in the rotary kiln is accelerated by a purge nozzle, so that the dust in the rotary kiln can be blown out for treatment. The hot air in the heat collecting tube enters the inside of the blow-drying tube, and the moisture on the surface of the dust on the screen can be blown off. The hot air in the heat collecting tube enters the inside of the drying tube, and the dust on the drying plate can be dried. The drying plate is driven to rotate by a driving rod, and the dust above it can be dumped to the bottom of the collecting box. The dry dust can be collected and sent to the rotary kiln for secondary combustion.

[0014] 3. In the present invention, the finally collected dust can be evenly discharged on the two drying plates by the movement of the drying plates, and the dust is spread on the drying plates by the movement of the scraper. At the same time, the hot air in the heat collecting pipe enters the scraper, further improving the drying effect of the dust. At the same time, the fan sends air to the waste heat recovery bin, and the waste heat of the rotary kiln heats the air in the waste heat recovery bin. The hot air enters the collecting box through the air outlet pipe, further improving the drying effect of the dust.

[0015] 4. Therefore, compared with the dust recycling system in the prior art, the present invention ensures the water washing effect of the dust by secondary water washing, and transports the dust residue to the interior of the aggregate box through the reciprocating lifting of the screen, and heats the heat collecting pipe through the rotary kiln. The heat collecting pipe blows air into the interior of the rotary kiln to assist the discharge of the dust, and at the same time, the hot air in the heat collecting pipe enters the interior of the drying pipe and the drying pipe to dry the dust on the screen and the dust on the drying plate. The dust can be evenly poured onto the drying plate by the movement of the drying plate, and the dust is further spread and heated by the movement of the scraper. At the same time, the fan sends air into the waste heat recovery bin to recycle the waste heat of the rotary kiln, further improving the drying effect of the dust in the aggregate box, and the dry dust is poured down by the turning of the drying plate, and put into the rotary kiln for continued combustion, thereby improving the heat utilization efficiency of the rotary kiln and recycling the dust. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0017] Figure 1 It is a structural schematic diagram of the present invention from a first viewing angle; Figure 2 It is a structural schematic diagram of the second viewing angle of the present invention; Figure 3 It is a schematic diagram of the structures of the drying component, the purge component and the auxiliary drying component of the present invention; Figure 4 It is a schematic diagram of the structure of the water washing tank, hopper, discharge channel and drying component of the present invention; Figure 5 It is a structural schematic diagram of the material collecting box and the drying mechanism of the present invention; Figure 6 It is a structural schematic diagram of the drying mechanism and the auxiliary drying assembly of the present invention; Figure 7 It is a schematic diagram of the structure of the drying mechanism and the turning assembly of the present invention.

[0018] In the figure: 1. Washing tank; 2. Hopper; 3. Discharging channel; 4. Collecting box; 5. Screen; 6. Electric cylinder 1; 7. Waste heat recovery bin; 8. Exhaust pipe; 9. Vibrating motor; 10. Transfer plate; 101. blow-drying tube; 102. blow-drying nozzle; 201, heat collecting tube; 202, purge nozzle; 203, fan; 301, drying plate; 302, drying tube; 401, moving frame; 402, rotating shaft; 403, driving rod; 404, electric cylinder 2; 405, motor; 501, scraper net; 502, electric cylinder three. DETAILED DESCRIPTION

[0019] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0020] like Figures 1 to 7 As shown, the present embodiment proposes a rotary kiln sintering dust recycling system, including a water washing tank 1, two water washing tanks 1 are provided, and also include a hopper 2, a discharge channel 3, a collection box 4, a screen 5, a blow-drying component, a purge component and a drying mechanism. Compared with the dust recycling system in the prior art, the present invention ensures the water washing effect of the dust by secondary water washing, and the dust residue is transported to the interior of the collection box 4 by the reciprocating lifting of the screen 5, and the heat collecting pipe 201 is heated by the rotary kiln. The heat collecting pipe 201 blows air into the interior of the rotary kiln to assist the discharge of the dust, and at the same time, the hot air in the heat collecting pipe 201 enters the blow-drying pipe 101 and the drying pipe Inside 302, the dust on the screen 5 is blown dry, and the dust on the drying plate 301 is dried. The movement of the drying plate 301 can make the dust evenly poured onto the drying plate 301. The movement of the scraper 501 further spreads and heats the dust. At the same time, the fan 203 supplies air to the waste heat recovery bin 7 to recycle the waste heat of the rotary kiln, further improving the drying effect of the dust in the aggregate box 4. The dry dust is poured down by turning the drying plate 301 and put into the rotary kiln for continued combustion, thereby improving the heat utilization efficiency of the rotary kiln and recycling the dust.

[0021] like Figures 1 to 4As shown, the hopper 2 is connected to the top of the water washing tank 1, the hopper 2 on the upper water washing tank 1 is connected to the kiln tail outlet of the rotary kiln, the discharge channel 3 is connected to the water washing tank 1, the hopper 2 on the lower water washing tank 1 is connected to the discharge channel 3 on the upper water washing tank 1, the collecting box 4 is connected to the discharge channel 3 on the lower water washing tank 1, the screen 5 can be raised and lowered inside the water washing tank 1, an electric cylinder 6 is provided on the water washing tank 1, the screen 5 is provided at the output end of the electric cylinder 6, there is a gap between the screen 5 and the inner wall of the water washing tank 1, in order to facilitate the dust on the screen 5 to enter the inside of the discharge channel 3, the screen 5 is inclined, and when the screen 5 is in the highest position, the lower side of the height corresponds to the position of the discharge channel 3, and the dust in the rotary kiln enters the upper outlet at the kiln tail through the kiln tail outlet. The dust ash is washed once inside the washing tank 1, and the potassium, sodium, sulfur and chlorine inside are dissolved in water. The washing tank 1 is connected with a drain pipe at the lower position, and a filter is arranged at the connection between the drain pipe and the washing tank 1. The drain pipe is opened regularly to discharge the solution to extract various elements, and the elements are made into industrial products for recycling. The screen 5 is driven to rise and fall back and forth by the electric cylinder 6, and the remaining undissolved dust ash is lifted up by the screen 5 to the discharge channel 3. Under the inclination of the screen 5, the dust ash falls into the discharge channel 3 and enters the washing tank 1 located below for secondary washing. The dust ash after the secondary washing enters the collecting box 4 through the discharge channel 3 for collection. There is a gap between the screen 5 and the washing tank 1, and the liquid in the washing tank 1 can be stirred to make the undissolved dust ash fall above the screen 5 and be extracted.

[0022] like Figures 1 to 4 As shown, the drying component is used to blow off the surface moisture of the dust on the screen 5, the drying component includes a drying pipe 101 and a drying nozzle 102, the drying pipe 101 is arranged inside the washing tank 1, the drying pipe 101 is located above the connection position between the discharge channel 3 and the washing tank 1, the drying nozzle 102 is connected to the drying pipe 101, and the air outlet of the drying nozzle 102 is arranged downward, the purge component is used to purge the dust inside the rotary kiln, the purge component includes a heat collecting pipe 201 and a purge nozzle 202, the heat collecting pipe 201 is coaxially arranged inside the rotary kiln, the heat collecting pipe 201 is connected to a fan 203, the drying pipe 101 and the heat collecting pipe are connected to the fan 203, and the drying pipe 101 and the heat collecting pipe are connected to the fan 203. The tube 201 is connected, the purge nozzle 202 is connected to the heat collecting tube 201, and air is transported to the inside of the heat collecting tube 201 through the fan 203. The inner wall of the rotary kiln is purged through the purge nozzle 202 to assist in blowing the dust in the rotary kiln to the inside of the water washing tank 1, thereby accelerating the processing efficiency of the dust. At the same time, the rotary kiln heats the heat collecting tube 201, and the hot air in the heat collecting tube 201 enters the inside of the blow-drying tube 101. Hot air is blown to the screen 5 through the blow-drying nozzle 102 to blow off the moisture on the surface of the dust screened by the screen 5, thereby facilitating the subsequent drying of the dust and reducing the waste of liquid in the water washing tank 1.

[0023] like Figures 1 to 3 As shown, the drying mechanism is used to dry the dust in the collection box 4, and the drying mechanism includes a drying plate 301 and a drying tube 302. The drying plate 301 is arranged inside the collection box 4, and the drying tube 302 is arranged inside the drying plate 301. The drying tube 302 is connected to the heat collecting pipe 201. In order to improve the drying effect of the dust in the collection box 4, two drying plates 301 are provided. The drying plates 301 are movably arranged inside the collection box 4. In order to push the dust on the drying plate 301 off, a flip assembly is also included. The flip assembly includes a moving frame 401, The rotating shaft 402 and the driving rod 403, the mobile frame 401 is provided with two, the mobile frame 401 can be movably arranged inside the collecting box 4, the collecting box 4 is provided with an electric cylinder 2 404, the mobile frame 401 is arranged at the output end of the electric cylinder 2 404, the two mobile frames 401 are fixedly connected, the drying plate 301 and the mobile frame 401 correspond one to one, the drying plate 301 is rotatably connected with the heat collecting pipe 201 through the rotating shaft 402, the heat collecting pipe 201 is connected with a transfer pipe through a telescopic hose, the rotating shaft 402 and the transfer pipe are rotatably connected, and the rotating shaft 402 and the mobile frame 401 are rotatably connected. The driving rod 403 is rotatably connected to the moving frame 401, and the moving frame 401 is provided with a motor 405. The driving rod 403 is arranged at the output end of the motor 405. The driving rod 403 and the drying plate 301 are fixedly connected. The hot air in the heat collecting tube 201 enters the interior of the drying tube 302, thereby heating the drying plate 301. The two moving frames 401 can be driven to move back and forth through the electric cylinder 404, thereby driving the two drying plates 301 to move back and forth. When one drying plate 301 is located below the discharge channel 3, the other drying plate 301 is away from the discharge channel 3. The discharge channel 3 and the two drying plates 301 work alternately, so that the dust discharged from the discharge channel 3 is evenly dumped on the drying plates 301, and the hot air in the heat collecting pipe 201 enters the interior of the drying pipe 302 to heat and dry the drying plates 301 and the dust on the surface thereof. After heating for a certain period of time, the motor 405 drives the drying plates 301 to flip over and dump the dust on the surface thereof to the bottom of the collecting box 4 for collection. Through the rotation connection of the rotating shaft 402 and the heat collecting pipe 201 and the bending and extension of the telescopic hose, the rotation and movement of the drying plates 301 can be adapted.

[0024] like Figures 1 to 6As shown, in order to further improve the drying effect of the dust in the collection box 4, an auxiliary drying component is also included. The auxiliary drying component is provided with two, and the auxiliary drying component includes a scraper 501. The scraper 501 is movably arranged inside the collection box 4. The collection box 4 is provided with an electric cylinder three 502. The scraper 501 is arranged at the output end of the electric cylinder three 502. The scraper 501 is a hollow structure. The scraper 501 is connected to the heat collecting pipe 201. After the drying plate 301 moves to a position away from the discharge channel 3, the electric cylinder three 502 drives the scraper 501 to move to Above the drying plate 301, the scraper 501 is in contact with the top of the drying plate 301, and the scraper 501 reciprocates on the top of the drying plate 301, flattening the dust on its surface on the surface of the drying plate 301, increasing the contact area between the dust and the drying plate 301, and at the same time, hot air enters the scraper 501 to further dry the dust, thereby improving the drying efficiency and effect of the dust. When the drying plate 301 needs to be turned over, the electric cylinder 502 drives the scraper 501 away from the drying plate 301 to avoid obstruction to its turning over.

[0025] like Figures 1 to 3 As shown, in order to further improve the drying effect of the dust in the aggregate box 4, it also includes a waste heat recovery bin 7, the waste heat recovery bin 7 is arranged outside the rotary kiln, the waste heat recovery bin 7 is connected with the air outlet of the fan 203, the waste heat recovery bin 7 extends into the aggregate box 4 and is connected with an air outlet pipe 8, the preheating recovery bin is made of heat insulating material, the outer wall of the rotary kiln also has a certain temperature, the fan 203 supplies air to the interior of the waste heat recovery bin 7, the rotary kiln heats the air in the waste heat recovery bin 7, and at the same time, the hot air enters the interior of the aggregate box 4 through the air outlet pipe 8 to assist in drying the dust, so that the aggregate box 4 is at a higher temperature, thereby improving the drying effect of the dust.

[0026] like Figure 1 to Figure 2 As shown, in order to further assist the falling of dust, a vibration motor 9 is also included. The vibration motor 9 is arranged on the collection box 4, and the collection box 4 is connected to the washing tank 1 through the transfer plate 10. The collection box 4 is driven to vibrate by the vibration motor 9, so that the dust on the surface of the drying plate 301 can fall into the collection box 4 after the drying plate 301 is turned over. At the same time, after the drying plate 301 is turned over, it can be moved to the bottom of the discharge channel 3, and the other side of the drying plate 301 is used to receive the dust, thereby extending the turning time of the drying plate 301, thereby ensuring that the drying plate 301 is discharged thoroughly. At the same time, the vibration of the collection box 4 is transmitted to the washing tank 1 and the screen 5 through the transfer plate 10, so as to shake off the moisture above the screen 5 and shake the dust into the inside of the discharge channel 3.

[0027] It should be noted that the bottoms of the washing tank 1 and the rotary kiln are both provided with support frames to support them and ensure the stability of the device, which does not affect the understanding of this embodiment and is therefore not shown in the figure.

[0028] The working principle or use process of the rotary kiln sintering dust recycling system is as follows: The fan 203 delivers air into the heat collecting tube 201, and the purge nozzle 202 blows the dust in the rotary kiln to the inside of the water washing tank 1 located above, and washes the dust once. The electric cylinder 6 drives the screen 5 to move back and forth, and lifts the remaining insoluble dust in the water washing tank 1 to the discharge channel 3 and drops it into the inside of the water washing tank 1 located below, and washes the remaining dust twice. Under the action of the screen 5, the remaining dust after the secondary washing is sent to the inside of the collecting box 4 through the discharge channel 3; The dust falls on the surface of the drying plate 301, and the hot air in the heat collecting tube 201 enters the drying tube 302 to heat and dry the drying plate 301 and the dust on its surface. After a certain period of time, the electric cylinder 2 404 drives the moving frame 401 to move, so that the other drying plate 301 moves to the bottom of the discharge channel 3 to receive the dust. The corresponding electric cylinder 3 502 drives the scraper 501 to move to the top of the drying plate 301 away from the discharge channel 3, and moves the dust above it, so that the dust is spread on the drying plate 301. At the same time, the heat of the scraper 501 assists in drying the dust net. After a certain period of time, the motor 405 drives the drying plate 301 to flip 180 degrees, and the dust on the drying plate 301 is dumped to the bottom of the collecting box 4 for collection, and then the electric cylinder 2 404 drives the moving frame 401 to move, and the flipped drying plate 301 is moved to the bottom of the discharge channel 3 to continue to receive it, and the other drying plate 301 is moved to a position away from the discharge channel 3, and the dust above it is auxiliary dried by the corresponding scraper 501, and the dust at the bottom of the collecting box 4 is regularly taken out and sent to the inside of the rotary kiln for secondary combustion.

[0029] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A rotary kiln sintering dust recycling system, comprising a water washing tank (1), characterized in that: The water washing tank (1) is provided with two, and further comprises: A hopper (2), the hopper (2) being connected to the top of the water washing tank (1), and the hopper (2) located on the water washing tank (1) above being connected to the kiln tail outlet of the rotary kiln; A discharge channel (3), the discharge channel (3) being in communication with the water washing tank (1), and the hopper (2) located on the water washing tank (1) below being in communication with the discharge channel (3) located on the water washing tank (1) above; A material collection box (4), the material collection box (4) being in communication with the material discharge channel (3) on the water washing tank (1) located below; A screen (5), the screen (5) being arranged inside the water washing tank (1) in a liftable manner, and a gap being present between the screen (5) and the inner wall of the water washing tank (1); A drying component, the drying component being used to blow off the moisture on the surface of the dust on the screen (5); A purge assembly, the purge assembly is used to purge dust inside the rotary kiln; A drying mechanism, wherein the drying mechanism is used to dry the dust removed from the collecting box (4).

2. A rotary kiln sintering dust recycling system according to claim 1, characterized in that: The blow-drying assembly comprises: a blow-drying pipe (101), the blow-drying pipe (101) being arranged inside the water washing tank (1), the blow-drying pipe (101) being located above a position where the discharge channel (3) and the water washing tank (1) are connected; A blow-drying nozzle (102), the blow-drying nozzle (102) being connected to the blow-drying pipe (101), and the air outlet of the blow-drying nozzle (102) being arranged downward.

3. A rotary kiln sintering dust recycling system according to claim 2, characterized in that: The purge assembly comprises: A heat collecting pipe (201), the heat collecting pipe (201) being coaxially arranged inside the rotary kiln, the heat collecting pipe (201) being connected to a fan (203), and the drying pipe (101) being connected to the heat collecting pipe (201); A purge nozzle (202), the purge nozzle (202) being in communication with the heat collecting pipe (201).

4. A rotary kiln sintering dust recycling system according to claim 3, characterized in that: The drying mechanism comprises: A drying plate (301), the drying plate (301) being arranged inside the material collecting box (4); A drying pipe (302), wherein the drying pipe (302) is arranged inside the drying plate (301), and the drying pipe (302) is connected to the heat collecting pipe (201).

5. A rotary kiln sintering dust recycling system according to claim 4, characterized in that: Two drying plates (301) are provided, and the drying plates (301) are movably arranged inside the material collection box (4).

6. A rotary kiln sintering dust recycling system according to claim 5, characterized in that: It also includes an auxiliary drying component, which includes: A scraper net (501), the scraper net (501) is movably arranged inside the material collection box (4), the scraper net (501) is a hollow structure, and the scraper net (501) is connected to the heat collection pipe (201).

7. A rotary kiln sintering dust recycling system according to claim 6, characterized in that: It also includes a waste heat recovery bin (7), which is arranged outside the rotary kiln, the waste heat recovery bin (7) is connected to the air outlet of the fan (203), and the waste heat recovery bin (7) extends into the material collecting box (4) and is connected to an air outlet pipe (8).

8. A rotary kiln sintering dust recycling system according to claim 7, characterized in that: The screen (5) is arranged in an inclined manner, and when the screen (5) is in the highest position, the side with a lower height corresponds to the position of the discharge channel (3).

9. A rotary kiln sintering dust recycling system according to claim 8, characterized in that: Also included is a flip assembly, the flip assembly comprising: A movable rack (401), wherein two movable racks (401) are provided, and the movable racks (401) are movably arranged inside the material collection box (4); A rotating shaft (402), the drying plate (301) and the movable frame (401) correspond one to one, the drying plate (301) is rotationally connected to the heat collecting pipe (201) via the rotating shaft (402), and the rotating shaft (402) and the movable frame (401) are rotationally connected; A driving rod (403), wherein the driving rod (403) is rotatably disposed on the movable frame (401), and the driving rod (403) and the drying plate (301) are fixedly connected.

10. A rotary kiln sintering dust recycling system according to claim 9, characterized in that: It also comprises a vibration motor (9), wherein the vibration motor (9) is arranged on the material collection box (4), and the material collection box (4) is connected to the water washing tank (1) via a transfer plate (10).

Images