A dust removal process after lithium ore roasting

Abstract

The invention relates to the technical field of lithium ore dust removal, and in particular to a dust removal treatment process after lithium ore roasting, comprising a spray mechanism and a water washing mechanism, wherein the spray mechanism and the water washing mechanism successively treat dust and impurities in smoke after roasting, the spray mechanism comprises a spray box, a spray pipe, a water storage box, a water inlet pipe, a smoke inlet pipe and a smoke outlet pipe, a plurality of the spray pipes are evenly fixedly connected to the top of the spray box, the water storage box is fixedly connected to the surface of the spray box, the water storage box and the spray pipe are connected, the smoke inlet pipe is used to introduce smoke generated after roasting into the spray box, the smoke outlet pipe is used to connect the spray mechanism and the water washing mechanism, and since a plurality of water washing plates are arranged in an S shape from top to bottom, the trajectory of smoke falling is limited to an S shape, thereby increasing the moving distance and residence time of the smoke in the water washing box, so that the dust removal is more thorough and the dust removal effect is improved.

Description

Technical Field

[0001] The invention relates to the technical field of lithium ore dust removal, in particular to a process for dust removal after lithium ore roasting. Background Art

[0002] Lithium aluminosilicate glass is a special colorless transparent glass composed of silicon oxide, aluminum oxide, lithium oxide and other materials. It is also one of the main raw materials for preparing lithium carbonate. The preparation of lithium carbonate through lithium aluminosilicate glass mainly involves raw material roasting, crushing, ball milling, leaching, filtration, impurity removal, fine filtration, concentration, lithium precipitation, drying, grinding, packaging and other steps. It can be seen that roasting is a very important step in the preparation of lithium carbonate; roasting can convert lithium compounds in raw minerals into oxides, providing conditions for subsequent extraction and processing; and dust removal during the roasting process is a very important link affecting the roasting efficiency. The main function of dust removal is to prevent fine particles and other pollutants in the flue gas from causing harm to the environment and human body; currently, roasting dust removal is generally achieved through mechanical dust removal and wet dust removal.

[0003] Among them, wet dust removal has high efficiency and low cost. Therefore, wet dust removal is often used for dust removal after lithium ore roasting. Wet dust removal usually uses a wet dust collector to remove dust. By spraying water mist, the dust in the smoke reacts with water to form larger particles and then settle down. The smoke after spraying is then discharged.

[0004] Traditional wet dust removal usually allows the smoke to pass through the cleaning box from top to bottom. Due to the limited size of the cleaning box, the smoke retention time is short, so the cleaning is not thorough enough. In addition, the sediment formed accumulates at the bottom of the cleaning box and is difficult to clean. If the sediment formed over a long period of time is not cleaned regularly, it will stick to the bottom of the cleaning box. Summary of the invention

[0005] Aiming at the technical problems existing in the application of the existing dust removal process after lithium ore roasting, the present invention provides a dust removal process after lithium ore roasting.

[0006] A dust removal process after lithium ore roasting, which uses a dust removal device after lithium ore roasting, including a spray mechanism and a water washing mechanism. The specific method of using the above-mentioned dust removal device after lithium ore roasting to treat the smoke after lithium ore roasting is as follows:

[0007] S1. Flue gas spraying: The roasting flue gas enters the spraying equipment through the pipeline, and a certain amount of water mist is sprayed in the spraying mechanism. The fine particles in the flue gas are intercepted by the water mist, and the fine particles are mixed with the water particle flow to form droplets and quickly sink to the bottom of the spray box for accumulation.

[0008] S2. Flue gas water washing: The flue gas after spraying passes through the water washing mechanism for continuous water washing from top to bottom.

[0009] S3. Flue gas sedimentation: After water washing, the smoke is discharged into the sedimentation tank through the exhaust hole. In the sedimentation tank, the particulate matter and pollutants such as sulfur dioxide remaining in the flue gas are finally collected into the sedimentation tank by physical precipitation and absorption.

[0010] S4. Flue gas emission: After being treated in the sedimentation tank, the flue gas has been purified and discharged into the atmosphere through the emission system.

[0011] The spray mechanism and the water washing mechanism successively process the dust and impurities in the smoke after roasting. The spray mechanism includes a spray box, a spray pipe, a water storage box, a water inlet pipe, a smoke inlet pipe and a smoke outlet pipe. The upper part of the spray box is arc-shaped and the lower part is square. A plurality of the spray pipes are evenly fixedly connected to the top of the spray box. A plurality of evenly arranged holes are provided on the surface of the spray pipe. The water storage box is fixedly connected to the surface of the spray box. The water storage box is connected to the spray pipe. The water inlet pipe and the water storage box are connected to pump external water into the water storage box. The smoke inlet pipe is used to introduce the smoke generated after roasting into the spray box. The smoke outlet pipe is used to connect the spray mechanism and the water washing mechanism.

[0012] Furthermore, the water washing mechanism includes a water washing box, a water spray pipe, a washing plate, an inclined plate, a strip groove and a circulation pipe. One end of the smoke outlet pipe is connected to the spray box, and the other end of the smoke outlet pipe is connected to the water washing box. A plurality of washing plates are staggeredly distributed from top to bottom and fixedly connected to the inside of the water washing box. The water spray pipes and the washing plates correspond one to one, one of which is fixedly connected to the upper wall of the inner cavity of the water washing box, and the remaining water spray pipes are fixedly connected to the surface of the washing plate. The strip groove is opened on the upper surface of the inclined plate, and the circulation pipe is fixedly connected to the outside of the water washing box and is connected to the spray pipe and the washing plate.

[0013] Furthermore, there is a gap between the washing plate and the inside of the water washing box, the smoke inlet pipe is located above the washing plate, the washing plate is a hollow structure with an upper opening, the inclined plate is fixedly connected to the upper surface of the washing plate, and the inclined plate and the washing plate are arranged at an angle.

[0014] Furthermore, the spray box is provided with a cleaning mechanism for collecting bottom sediment, the cleaning mechanism includes a scraping assembly, a lifting assembly, a positioning assembly and a sealing assembly, the scraping assembly includes a slide plate, a scraper, an electric telescopic rod and a mounting frame, the slide plate is slidably connected to the bottom of the spray box, the scraper is arranged at the end of the slide plate, the scraper and the bottom of the spray box are slidably connected, the electric telescopic rod is installed on the outside of the spray box through the mounting frame, and the telescopic end of the electric telescopic rod is fixedly connected to the slide plate.

[0015] Furthermore, the lifting assembly includes a first motor, a cam, a first spring, a transmission plate and a fixed frame, the fixed frame is connected to the bottom of the spray box, the first motor is installed on the surface of the fixed frame, the output end of the first motor is fixedly connected to the cam, the cam is rotatably connected to the inside of the fixed frame, the first spring is fixedly connected to the inside of the fixed frame, the transmission plate is arranged inside the fixed frame and fixedly connected to the first spring, the transmission plate and the cam are always in contact, and the transmission plate and the slide plate are slidably connected.

[0016] Furthermore, the positioning assembly includes a connecting plate, a second spring, a fixed cylinder and an insertion rod, the connecting plate is slidably connected to the inside of the skateboard, and the connecting plate extends to the outside of the skateboard, the second spring is arranged in the skateboard and fixedly connected to the connecting plate, the fixed cylinder is connected to the skateboard, the insertion rod is slidably connected in the fixed cylinder and extends to the inside of the connecting plate, a sliding groove is provided on the surface of the connecting plate, the fixed cylinder is slidably connected in the sliding groove, and a socket matching the insertion rod is provided on the inner wall of the sliding groove.

[0017] Furthermore, the sealing assembly includes a hydraulic cylinder, a first sealing plate and a discharge trough, the hydraulic cylinder is installed on the surface of the fixed frame, the telescopic end of the hydraulic cylinder is fixedly connected to the first sealing plate, the discharge trough is opened on the surface of the spray box, the first sealing plate is slidably connected in the discharge trough, and the scraper and the discharge trough cooperate.

[0018] Furthermore, the spray pipe is slidably connected to the inside with a second sealing plate, the second sealing plate cooperates with the slide plate, the scraper is slidably connected to the inside with a sliding rod, the sliding rod extends to the outside of the scraper and is in sliding contact with the inner wall of the spray box, the third spring is connected to the inside of the scraper and is fixedly connected to the sliding plate, and an exhaust hole is opened on the outer wall of the washing box.

[0019] Beneficial effects of the present invention:

[0020] 1. The smoke generated after the roasting of lithium ore first enters the spray box through the smoke inlet pipe. Under the action of water mist sprayed from top to bottom by multiple spray pipes, the dust and impurities in the smoke will fall and settle to the bottom of the spray box. The multiple spray pipes can react with the smoke to the greatest extent, thereby removing the dust more thoroughly. After being atomized by the spray mechanism, the smoke still contains some smaller dust and impurities. At this time, the smoke is passed into the water washing box through the smoke outlet pipe. The water spray pipes arranged in the water washing box spray water to react with the remaining smaller dust particles in the smoke, and finally fall into the washing plate. The washing plate, the water spray pipe and the circulation pipe are connected to realize water circulation, thereby saving water consumption. Since the multiple water washing plates are staggered from top to bottom and fixedly connected to the inside of the water washing box, the trajectory of the smoke falling is limited to an S shape, thereby increasing the moving distance and residence time of the smoke in the water washing box, so that the dust removal is more thorough and the dust removal effect is improved.

[0021] 2. The cleaning mechanism can clean the sediment generated in the spray box. The lifting assembly is convenient for the cleaning mechanism to perform multiple cleanings. The scraper is lifted so that it does not contact the bottom of the spray box, thereby preventing the sediment from being moved to the end away from the discharge chute. The positioning assembly enables the scraper to rotate, so that the scraper contacts more areas of the bottom of the spray box, making the sediment cleaning more thorough. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a flow chart of the present invention.

[0023] Figure 2 It is a schematic diagram of the overall structure of the present invention.

[0024] Figure 3 It is a schematic diagram of the spray mechanism of the present invention.

[0025] Figure 4 It is a cross-sectional view of the spray box of the present invention.

[0026] Figure 5 It is a cross-sectional view of the water washing box of the present invention.

[0027] Figure 6 It is a schematic cross-sectional view of the top of the water washing box of the present invention.

[0028] Figure 7 Schematic diagram of the internal cleaning mechanism of the spray box.

[0029] Figure 8 It is a schematic diagram of the interior of the skateboard in the present invention.

[0030] Fig. 9 For the present invention Figure 4 Enlarged schematic diagram at point A in the middle.

[0031] Fig.10 It is a schematic diagram of the lifting component in the present invention.

[0032] Fig.11 For the present invention Fig.10 Enlarged schematic diagram of point B in the middle.

[0033] Fig.12 It is a cross-sectional view of the scraper in the present invention.

[0034] 1. Spray box; 101. Spray pipe; 102. Water storage box; 103. Water inlet pipe; 104. Smoke inlet pipe; 105. Smoke outlet pipe; 2. Water washing box; 201. Water spray pipe; 202. Washing plate; 203. Inclined plate; 204. Strip groove; 205. Circulation pipe; 3. Slide plate; 301. Scraper; 302. Electric telescopic rod; 303. Mounting frame; 4. First motor; 401. Cam; 402. First spring; 403. Transmission plate; 404. Fixed frame; 5. Connecting plate; 501. Second spring; 502. Fixed cylinder; 503. Insert rod; 504. Slide groove; 6. Hydraulic cylinder; 601. First sealing plate; 602. Discharge trough; 7. Second sealing plate; 8. Third spring; 801. Slide rod; 9. Exhaust hole. Implementation

[0035] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

[0036] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, a dust removal process after lithium ore roasting is used, which uses a dust removal device after lithium ore roasting, including a spray mechanism and a water washing mechanism. The specific method of using the above-mentioned dust removal device after lithium ore roasting to treat the smoke after lithium ore roasting is as follows:

[0037] S1. Flue gas spraying: The roasting flue gas enters the spray mechanism through the pipeline, and a certain amount of water mist is sprayed in the spray equipment. The fine particles in the flue gas are intercepted by the water mist, and the fine particles are mixed with the water particle flow to form droplets and quickly sink to the bottom of the spray box 1 for accumulation.

[0038] S2. Flue gas water washing: The flue gas after spraying passes through the water washing mechanism for continuous water washing from top to bottom.

[0039] S3, flue gas precipitation: the flue gas after water washing is discharged into the sedimentation tank through the exhaust hole 9, and the particulate matter and pollutants such as sulfur dioxide remaining in the flue gas are finally collected into the sedimentation tank by physical precipitation and absorption.

[0040] S4. Flue gas emission: After being treated in the sedimentation tank, the flue gas has been purified and discharged into the atmosphere through the emission system.

[0041] The spray mechanism and the water washing mechanism successively process the dust and impurities in the smoke after roasting. The spray mechanism includes a spray box 1, a spray pipe 101, a water storage box 102, a water inlet pipe 103, a smoke inlet pipe 104 and a smoke outlet pipe 105. The upper part of the spray box 1 is arc-shaped and the lower part is square. A plurality of the spray pipes 101 are evenly fixedly connected to the top of the spray box 1. A plurality of evenly arranged holes are provided on the surface of the spray pipe 101. The water storage box 102 is fixedly connected to the surface of the spray box 1. The water storage box 102 is connected to the spray pipe 101. The water inlet pipe 103 is connected to the water storage box 102 to pump external water into the water storage box 102. The smoke inlet pipe 104 is used to introduce the smoke generated after roasting into the spray box 1. The smoke outlet pipe 105 is used to connect the spray mechanism and the water washing mechanism.

[0042] The smoke generated after the roasting of lithium ore first enters the spray box 1 through the smoke inlet pipe 104. Under the action of the water mist sprayed from top to bottom by multiple spray pipes 101, the dust and impurities in the smoke will fall and settle to the bottom of the spray box 1. The multiple spray pipes 101 can react with the smoke to the greatest extent, thereby removing the dust more thoroughly. The smoke then enters the water washing mechanism through the smoke outlet pipe 105. The smoke that is not completely purified is further treated by the water washing mechanism. The treated smoke flows into the sedimentation tank again. In the sedimentation tank, the smaller particulate matter and pollutants such as sulfur dioxide in the flue gas are finally collected in the sedimentation tank by physical precipitation and absorption. After treatment in the sedimentation tank, the discharged flue gas has been purified and discharged into the atmosphere through the emission system.

[0043] like Figure 3 , 4 As shown in Figure 5, the water washing mechanism includes a water washing box 2, a water spray pipe 201, a washing plate 202, an inclined plate 203, a strip groove 204 and a circulation pipe 205. One end of the smoke outlet pipe 105 is connected to the spray box 1, and the other end of the smoke outlet pipe 105 is connected to the water washing box 2. A plurality of washing plates 202 are staggeredly distributed from top to bottom and fixedly connected to the inside of the water washing box 2. The water spray pipes 201 and the washing plates 202 correspond to each other one by one, and one of the water spray pipes 201 is fixedly connected to the upper wall of the inner cavity of the water washing box 2, and the remaining water spray pipes 201 are fixedly connected to the surface of the washing plate 202. The strip groove 204 is opened on the upper surface of the inclined plate 203, and the strip groove 204 is used for water to pass through. The circulation pipe 205 is fixedly connected to the outside of the water washing box 2 and is connected to the water spray pipe 201 and the washing plate 202.

[0044] After being atomized by the spraying mechanism, the smoke still contains some smaller dust and impurities. At this time, the smoke is passed into the water washing box 2 through the smoke outlet pipe 105. The water spray pipe 201 arranged in the water washing box 2 sprays water and reacts with the remaining smaller dust particles in the smoke, and finally falls into the washing plate 202. The washing plate 202, the water spray pipe 201 and the circulation pipe 205 are connected to realize water circulation, thereby saving water consumption. Since the multiple water washing plates 202 are arranged in an S shape from top to bottom, the trajectory of the smoke falling is limited to an S shape, thereby increasing the moving distance and residence time of the smoke in the water washing box 2, so that the dust removal is more thorough and the dust removal effect is improved. When the smoke flows from top to bottom over each washing plate 202, the corresponding water spray pipe 201 reacts with the dust in the smoke, and then the cooperation of multiple washing plates 202 and the water spray pipe 201 can purify the dust and impurities in the smoke to the greatest extent.

[0045] like Figure 3 , 4 As shown, there is a gap between the washing plate 202 and the interior of the water washing box 2, and the gap is provided for smoke and dust to pass through. The smoke outlet pipe 105 is located above the washing plate 202. The washing plate 202 is a hollow structure with an upper opening. The inclined plate 203 is fixedly connected to the upper surface of the washing plate 202. The inclined plate 203 and the washing plate 202 are arranged at an angle. The inclined arrangement is more conducive to the water on the surface of the washing plate 202 to enter the washing plate 202, so that the water flows into the water spray pipe 201 below through the washing plate 202 to spray water directly.

[0046] like Figure 6 , 7 As shown, the spray box 1 is provided with a cleaning mechanism for collecting bottom sediment, the cleaning mechanism includes a scraping assembly, a lifting assembly, a positioning assembly and a sealing assembly, the scraping assembly includes a slide plate 3, a scraper 301, an electric telescopic rod 302 and a mounting frame 303, the slide plate 3 is slidably connected to the bottom of the spray box 1, the scraper 301 is arranged at the end of the slide plate 3, the scraper 301 and the bottom of the spray box 1 are slidably connected, the electric telescopic rod 302 is installed on the outside of the spray box 1 through the mounting frame 303, and the telescopic end of the electric telescopic rod 302 is fixedly connected to the slide plate 3.

[0047] The cleaning mechanism is capable of cleaning the sediment generated in the spray box 1. The electric telescopic rod 302 is started to drive the slide plate 3 to move and the scraper 301 connected to the slide plate 3 to move synchronously. The scraper 301 scrapes up the sediment at the bottom of the spray box 1 and drives it to the outside of the spray box 1 for collection.

[0048] like Fig.10As shown, the lifting assembly includes a first motor 4, a cam 401, a first spring 402, a transmission plate 403 and a fixed frame 404, the fixed frame 404 is connected to the bottom of the spray box 1, the first motor 4 is installed on the surface of the fixed frame 404, the output end of the first motor 4 is fixedly connected to the cam 401, the cam 401 is rotatably connected to the inside of the fixed frame 404, the first spring 402 is fixedly connected to the inside of the fixed frame 404, the transmission plate 403 is arranged inside the fixed frame 404 and fixedly connected to the first spring 402, the transmission plate 403 and the cam 401 are always in contact, and the transmission plate 403 and the slide plate 3 are slidably connected.

[0049] When the cleaning mechanism cannot clean the sediment at the bottom of the spray box 1 at one time, it needs to be cleaned multiple times. When the slide plate 3 is close to the discharge slot 602 on the spray box 1, the first motor 4 is started, and the cam 401 rotates under the drive of the first motor 4. The cam 401 squeezes the transmission plate 403. At this time, the first spring 402 is stretched, and the transmission plate 403 pushes the slide plate 3 to move away from the bottom of the spray box 1, so that the scraper 301 does not contact the bottom of the spray box 1, and then the scraper 301 will not move the sediment at the bottom away from the discharge slot 602 on the spray box 1 when the slide plate 3 moves. If the sediment at the bottom is moved away from the discharge slot 602 on the spray box 1, it will cause the problem of being unable to be cleaned.

[0050] like Fig. 9 , 10 As shown, the positioning assembly includes a connecting plate 5, a second spring 501, a fixed cylinder 502 and an insertion rod 503. The connecting plate 5 is slidably connected to the inside of the skateboard 3, and the connecting plate 5 extends to the outside of the skateboard 3. The second spring 501 is arranged in the skateboard 3 and fixedly connected to the connecting plate 5. The fixed cylinder 502 is connected to the skateboard 3. The insertion rod 503 is slidably connected in the fixed cylinder 502 and extends to the inside of the connecting plate 5. A sliding groove 504 is provided on the surface of the connecting plate 5. The fixed cylinder 502 is slidably connected in the sliding groove 504. The inner wall of the sliding groove 504 is provided with a socket that cooperates with the insertion rod 503.

[0051] Because the second spring 501 forms an angle between the connecting plate 5 and the scraper 301 in a normal state, the sediment in the end area of ​​the spray box 1 cannot be cleaned. At this time, the plug rod 503 is moved first so that the plug rod 503 is not plugged into the connecting plate 5, thereby driving the scraper 301 to rotate by pulling the connecting plate 5 until the scraper 301 and the connecting plate 5 are vertical, and then the plug rod 503 is released to plug the plug rod 503 and the connecting plate 5. At this time, the scraper 301 can be positioned so that the entire area at the bottom of the spray box 1 can be cleaned. When the slide plate 3 drives the scraper 301 to move, the position of the connecting plate 5 is moved, so that the scraper 301 and the connecting plate 5 form an angle, so that the sediment can be gathered and removed more conveniently.

[0052] like Figure 3 As shown, the sealing assembly includes a hydraulic cylinder 6, a first sealing plate 601 and a discharge trough 602, the hydraulic cylinder 6 is installed on the surface of the fixed frame 404, the telescopic end of the hydraulic cylinder 6 is fixedly connected to the first sealing plate 601, the discharge trough 602 is opened on the surface of the spray box 1, the first sealing plate 601 is slidably connected in the discharge trough 602, and the scraper 301 and the discharge trough 602 cooperate.

[0053] When the sediment is to be moved out, the hydraulic cylinder 6 is started to drive the first sealing plate 601 to move, thereby vacating the gap of the discharge chute 602 , and the sediment is moved out of the interior of the spray box 1 through the discharge chute 602 .

[0054] like Fig.11 As shown, the spray box 1 is slidably connected to a second sealing plate 7, and the second sealing plate 7 cooperates with the slide plate 3. When the slide plate 3 moves in a direction away from the bottom of the spray box 1 under the action of the lifting assembly, the second sealing plate 7 is driven to move, thereby ensuring the sealing of the spray box 1. The scraper 301 is slidably connected to a slide bar 801, and the slide bar 801 extends to the outside of the scraper 301 and is in sliding contact with the inner wall of the spray box 1. The third spring 8 is connected to the inside of the scraper 301 and is fixed to the slide bar 801. The cooperation of the sliding rod 801 and the third spring 8 can make the scraper 301 always contact with the inner wall of the spray box 1. Because when the scraper 301 rotates, the moving trajectory of the scraper 301 is arc-shaped. If the scraper 301 is fixed in length, a gap between it and the spray box 1 will be caused, and part of the sediment will not be scraped off. An exhaust hole 9 is opened on the outer wall of the washing box 2, and the smoke and dust are discharged through the exhaust hole 9, and the smoke and dust are discharged into the sedimentation tank through the exhaust hole 9, and then discharged into the atmosphere through the exhaust system after being processed in the sedimentation tank.

[0055] Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Those skilled in the art of the present invention may make various modifications or additions to the described specific embodiments or replace them in a similar manner, but they will not deviate from the spirit of the present invention or exceed the scope defined by the attached claims. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art and related fields without creative work shall fall within the scope of protection of the present invention.

Claims

1. A process for dust removal after lithium ore roasting, which uses a device for dust removal after lithium ore roasting, including a spray mechanism and a water washing mechanism, characterized in that: The specific method for treating the smoke dust after the lithium ore roasting by using the above-mentioned lithium ore roasting dust removal device is as follows: S1. Smoke spraying: The roasting smoke enters the spraying equipment through the pipeline, and a certain amount of water mist is sprayed in the spraying mechanism. The fine particles in the smoke are intercepted by the water mist, and the fine particles are mixed with the water particle flow to form droplets and quickly sink to the bottom of the spray box for accumulation; S2. Flue gas water washing: The flue gas after spraying passes through the water washing mechanism for continuous water washing from top to bottom; S3, flue gas precipitation: the flue gas after water washing is discharged into the sedimentation tank through the exhaust hole (9), and the particulate matter and sulfur dioxide pollutants remaining in the flue gas are finally collected into the sedimentation tank by physical precipitation and absorption; S4. Flue gas emission: After being treated in the sedimentation tank, the flue gas has been purified and discharged into the atmosphere through the emission system; The spray mechanism and the water washing mechanism successively process the dust and impurities in the smoke after roasting. The spray mechanism comprises a spray box (1), a spray pipe (101), a water storage box (102), a water inlet pipe (103), a smoke inlet pipe (104) and a smoke outlet pipe (105). The upper part of the spray box (1) is arc-shaped and the lower part is square. A plurality of the spray pipes (101) are evenly fixedly connected to the top of the spray box (1). The spray pipes (101) The surface of the spray box (102) is provided with a plurality of evenly arranged holes, the water storage box (102) is fixedly connected to the surface of the spray box (1), the water storage box (102) is connected to the spray pipe (101), the water inlet pipe (103) is connected to the water storage box (102) for pumping external water into the water storage box (102), the smoke inlet pipe (104) is used to introduce smoke generated after roasting into the spray box (1), and the smoke outlet pipe (105) is used to connect the spray mechanism and the water washing mechanism; The water washing mechanism comprises a water washing box (2), a water spray pipe (201), a washing plate (202), an inclined plate (203), a strip groove (204) and a circulation pipe (205); one end of the smoke outlet pipe (105) is connected to the spray box (1), and the other end of the smoke outlet pipe (105) is connected to the water washing box (2); a plurality of washing plates (202) are staggeredly distributed from top to bottom and fixedly connected to the inside of the water washing box (2); the water spray pipes (201) and the washing plates (202) correspond to each other one by one, one of which is fixedly connected to the upper wall of the inner cavity of the water washing box (2), and the remaining water spray pipes (201) are fixedly connected to the surface of the washing plates (202); the strip groove (204) is opened on the upper surface of the inclined plate (203); and the circulation pipe (205) is fixedly connected to the outside of the water washing box (2) and is connected to the water spray pipe (201) and the washing plates (202); There is a gap between the washing plate (202) and the inside of the water washing box (2); the smoke outlet pipe (105) is located above the washing plate (202); the washing plate (202) is a hollow structure with an upper opening; the inclined plate (203) is fixedly connected to the upper surface of the washing plate (202); and the inclined plate (203) and the washing plate (202) are arranged in an inclined manner.

2. The dust removal process after lithium ore roasting according to claim 1, characterized in that: The spray box (1) is provided with a cleaning mechanism for collecting sediment at the bottom, the cleaning mechanism comprising a scraping assembly, a lifting assembly, a positioning assembly and a sealing assembly, the scraping assembly comprising a slide plate (3), a scraper (301), an electric telescopic rod (302) and a mounting frame (303), the slide plate (3) being slidably connected to the bottom of the spray box (1), the scraper (301) being arranged at the end of the slide plate (3), the scraper (301) being slidably connected to the bottom of the spray box (1), the electric telescopic rod (302) being mounted on the outside of the spray box (1) via the mounting frame (303), and the telescopic end of the electric telescopic rod (302) being fixedly connected to the slide plate (3).

3. The dust removal process after lithium ore roasting according to claim 2 is characterized in that: The lifting assembly comprises a first motor (4), a cam (401), a first spring (402), a transmission plate (403) and a fixed frame (404); the fixed frame (404) is connected to the bottom of the spray box (1); the first motor (4) is mounted on the surface of the fixed frame (404); the output end of the first motor (4) is fixedly connected to the cam (401); the cam (401) is rotatably connected to the inside of the fixed frame (404); the first spring (402) is fixedly connected to the inside of the fixed frame (404); the transmission plate (403) is arranged inside the fixed frame (404) and is fixedly connected to the first spring (402); the transmission plate (403) and the cam (401) are always in contact; and the transmission plate (403) and the slide plate (3) are slidably connected.

4. The dust removal process after lithium ore roasting according to claim 2, characterized in that: The positioning assembly comprises a connecting plate (5), a second spring (501), a fixing cylinder (502) and an insertion rod (503); the connecting plate (5) is slidably connected to the inside of the slide plate (3), and the connecting plate (5) extends to the outside of the slide plate (3); the second spring (501) is arranged in the slide plate (3) and fixedly connected to the connecting plate (5); the fixing cylinder (502) is connected to the slide plate (3); the insertion rod (503) is slidably connected to the inside of the fixing cylinder (502) and extends to the inside of the connecting plate (5); a sliding groove (504) is provided on the surface of the connecting plate (5); the fixing cylinder (502) is slidably connected in the sliding groove (504); and a socket matching the insertion rod (503) is provided on the inner wall of the sliding groove (504).

5. The dust removal process after lithium ore roasting according to claim 2, characterized in that: The sealing assembly comprises a hydraulic cylinder (6), a first sealing plate (601) and a discharge trough (602); the hydraulic cylinder (6) is mounted on the surface of a fixed frame (404); the telescopic end of the hydraulic cylinder (6) is fixedly connected to the first sealing plate (601); the discharge trough (602) is provided on the surface of a spray box (1); the first sealing plate (601) is slidably connected in the discharge trough (602); and the scraper (301) cooperates with the discharge trough (602).

6. The dust removal process after lithium ore roasting according to claim 2, characterized in that: The spray box (1) is slidably connected to a second sealing plate (7) inside, the second sealing plate (7) cooperates with the slide plate (3), the scraper (301) is slidably connected to a slide bar (801) inside, the slide bar (801) extends to the outside of the scraper (301) and is in sliding contact with the inner wall of the spray box (1), the third spring (8) is connected to the inside of the scraper (301) and is fixedly connected to the slide bar (801), and an exhaust hole (9) is opened on the outer wall of the washing box (2).

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