Device and method for improving the grade of lepidolite flotation concentrate

Abstract

The present invention discloses a device and method for improving the grade of lepidolite flotation concentrate, and relates to the technical field of lepidolite beneficiation. The device for improving the grade of lepidolite flotation concentrate comprises: a device fixedly mounted on one side surface; a stirring assembly 1 is provided on the top; the stirring assembly 1 is mainly used to stir the lepidolite ore slurry on the inner wall to keep it in a fluid state, thereby preventing the lepidolite ore slurry from settling; a flotation chamber is provided on the top of the flotation tank body; a partition is provided on the inner side wall of the flotation chamber. The device for improving the grade of lepidolite flotation concentrate uses a long rod to drive a connecting rod to rotate, thereby driving a scraper to rotate, thereby scraping off the floating foam in the flotation chamber; wherein the electric push rod is energized to drive the slider to move along the outer side of the long rod, thereby scraping off and cleaning the ore attached to the scraper surface, thereby improving the flotation grade and preventing the floating foam from agglomerating due to long-term operation.

Description

Technical Field

[0001] The invention relates to the technical field of lepidolite beneficiation, in particular to a device for improving the grade of lepidolite flotation concentrate. Background Art

[0002] Lepidolite is one of the main industrial minerals for extracting lithium. Lithium is an important energy metal. Its application in high-energy lithium batteries and controlled thermonuclear reactions makes it an important raw material for solving the long-term energy supply of mankind. Lithium products are widely used in smelting, refrigeration, atomic energy, aerospace, ceramics, glass, grease, rubber, welding, medicine, batteries and other industries. my country's lithium resources are relatively rich, but the grade is relatively low, the embedded particle size is fine, it is easy to mud, and the utilization level is low. The resource advantage has not yet been transformed into an economic advantage.

[0003] When the existing flotation device is in use, the concentrate will float in the foam area and be discharged through the discharge port to achieve the collection of the concentrate. During the flotation process, a large amount of concentrate will float in the foam area and cannot be discharged in time. In the process of scraping the foam, the foam will adhere to the surface of the scraper. Long-term scraping will cause the foam remaining on the scraper surface to solidify and clump, thereby affecting subsequent scraping. In addition, the existing flotation device has a poor stirring effect, the slurry cannot be well mixed with the reagent, and the bubble performance generated is poor, resulting in poor mineral bonding, thereby affecting the grade of the concentrate. Summary of the Invention

[0004] (1) Technical problems solved

[0005] In response to the shortcomings of the existing technology, the present invention provides a device and method for improving the grade of lepidolite flotation concentrate, which solves the problems that traditional flotation devices cannot clean the foam on the scraper surface, have poor stirring effect, poor mixing effect with reagents, and poor bubble aggregation effect.

[0006] (2) Technical solution

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: a device for improving the grade of lepidolite flotation concentrate, comprising: a device fixedly mounted on one side surface, a stirring assembly 1 provided on the top, the stirring assembly 1 mainly used to stir the lepidolite ore slurry on the inner wall to keep it in a fluid state, and prevent the lepidolite ore slurry from settling;

[0008] A flotation chamber is provided on the top of the flotation tank body, a partition is provided on the inner side wall of the flotation chamber, a slurry feed pipe is fixedly installed on the inner side wall of the flotation chamber, a pulley is fixedly installed on the top of the flotation tank body, a stirring component 2 is provided on the top of the flotation tank body, the stirring component 2 is mainly used to fully mix the lithium mica slurry raw material with the reagent, a scraping component is provided on the top of the flotation tank body, the scraping component is mainly used to scrape the floated lithium mica ore, and a reagent feed pipe is plugged into one side of the flotation tank body.

[0009] Furthermore, the stirring component includes a flywheel, a stirring roller, and a stirring blade. The stirring roller is movably installed on the inner wall of the raw material slurry pool, the flywheel is fixedly installed at one end of the stirring roller, and the stirring blade is fixedly installed on the outside of the stirring roller.

[0010] Furthermore, the second stirring component includes a vertical transmission shaft, a pulley, and a central support tube. The vertical transmission shaft is fixedly installed on the top of the flotation tank body, the central support tube is fixedly installed on the bottom end of the vertical transmission shaft, the outer side of the central support tube is fixedly connected to one end of the medicine feed pipe, and the pulley is fixedly installed on the top of the vertical transmission shaft.

[0011] Furthermore, the second stirring component also includes a connecting rod and an air inlet pipe. The connecting rod is opened on the outside of the central support tube, and the air inlet pipe is fixedly installed on one end of the connecting rod.

[0012] Furthermore, the second stirring component also includes a disc, a stirring blade, and a guide blade. The disc is fixedly mounted on the bottom end of the central support cylinder, the stirring blade is fixedly mounted on the bottom surface of the disc, and the guide blade is opened on the outer surface of the stirring blade.

[0013] Furthermore, the second stirring component also includes a bottom tube and a nozzle. The bottom tube is fixedly installed on the bottom surface of the disc, and the nozzle is movably installed on the outside of the bottom tube.

[0014] Furthermore, the scraping assembly includes a drive motor, a drive flywheel, and a long rod. The drive motor is fixedly installed on the top surface of the flotation tank body, the drive flywheel is movably installed on the outside of the flotation tank body, and the long rod is fixedly installed on one end of the drive flywheel.

[0015] Furthermore, the scraping assembly also includes a connecting rod, a scraper, a power supply, an electric push rod, and a slider. The connecting rod is fixedly installed on the outside of the long rod, the scraper is fixedly installed on the outside of the connecting rod, the power supply is fixedly installed on the outside of the long rod, the electric push rod is fixedly installed on one end of the power supply, and the slider is movably installed on the outside of the long rod.

[0016] Furthermore, the scraping assembly also includes a telescopic chamber, a cleaning piece, and a pressure spring. The telescopic chamber is opened at one end of the slider, the cleaning piece is movably installed on the inner wall of the connecting rod, and one end of the pressure spring is fixedly installed on the inner wall of the cleaning piece.

[0017] A method for improving the grade of lepidolite flotation concentrate, comprising:

[0018] S1: First, the lepidolite ore is crushed and then wet-ball milled to obtain ore pulp;

[0019] S2: Based on S1, the lepidolite ore slurry to be floated is poured into the raw material slurry pool for storage, and the flywheel 1 is driven to drive the stirring roller and the stirring blade to rotate to stir the lepidolite ore slurry;

[0020] S3: Based on S2, the sealing plug at one end of the slurry inlet pipe is removed. At this time, the lepidolite ore slurry in the raw slurry pool enters the flotation chamber. The external motor of the pulley is driven to further drive the disc and the stirring piece to rotate, thereby stirring the lepidolite ore slurry. As the stirring progresses, the reagent is injected into the reagent inlet pipe to react with the lepidolite ore slurry.

[0021] S4: Based on S3, after the raw pulp of the lithium mica ore containing the reagent is fully stirred, the raw pulp is aerated and foamed, and the foam product is returned to the roughing tank through the sweeping of the long rod and the scraper.

[0022] (3) Beneficial effects

[0023] The present invention has the following beneficial effects:

[0024] 1. The device for improving the grade of lepidolite flotation concentrate uses a long rod to drive the connecting rod to rotate, thereby driving the scraper to rotate and scraping the froth floating in the flotation chamber. The electric push rod is then energized to drive the slider to move along the outer side of the long rod, thereby scraping and cleaning the mineral material attached to the scraper surface, improving the flotation grade, and preventing the froth from agglomerating due to long-term operation.

[0025] 2. The device for improving the grade of lepidolite flotation concentrate is mainly used to stir the lepidolite ore slurry inside the flotation chamber by arranging a disc and a stirring piece so that it can be fully mixed with the reagent, thereby generating more froth. The guide piece, driven by the stirring piece and the disc, diverts the lepidolite ore slurry to ensure that the lepidolite ore slurry is fully stirred. The high-speed rotation generates a higher negative pressure inside the lepidolite ore slurry, thereby allowing more air to enter and being more conducive to the generation of bubbles.

[0026] 3. The device for improving the grade of lepidolite flotation concentrate drives the stirring roller and stirring blades to rotate through an external drive to stir the lepidolite ore slurry on the inner wall of the raw slurry pool to ensure a certain fluidity, thereby avoiding the blockage of the slurry inlet pipe, and at the same time making the slurry evenly distributed and ensuring the quality of flotation ore selection.

[0027] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a three-dimensional schematic diagram of a device for improving the grade of lepidolite flotation concentrate according to the present invention;

[0029] Figure 2 This is a schematic diagram of the flotation cell structure of the present invention;

[0030] Figure 3 This is a schematic diagram of the scraper structure of the present invention;

[0031] Figure 4 This is a schematic diagram of the long rod structure of the present invention;

[0032] Figure 5 This is a schematic diagram of the central support tube structure of the present invention;

[0033] Figure 6 This is a schematic diagram of the disc structure of the present invention;

[0034] Figure 7 It is a schematic diagram of the cross-sectional structure of the slider of the present invention.

[0035] In the figure, 1. flotation tank body; 2. raw material slurry tank; 3. flywheel 1; 4. stirring roller; 5. stirring blade; 6. medicine inlet pipe; 7. flotation chamber; 8. driving flywheel; 9. driving motor; 10. pulley; 11. motor seat; 12. air inlet pipe; 13. partition; 14. vertical transmission shaft; 15. slurry inlet pipe; 16. long rod; 17. connecting rod; 18. scraper; 19. power supply; 20. electric push rod; 21. slider; 22. connecting rod; 23. central support cylinder; 24. disc; 25. stirring blade; 26. guide plate; 27. bottom pipe; 28. nozzle; 29. ​​telescopic chamber; 30. cleaning blade; 31. pressure spring. DETAILED DESCRIPTION

[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0037] In the description of the present invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inside", "around" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0038] See also Figure 1-7 The embodiment of the present invention provides a technical solution: a device for improving the grade of lepidolite flotation concentrate, comprising a flotation cell body 1, a raw material slurry pool 2 fixedly mounted on one side surface of the flotation cell body 1, a stirring assembly 1 provided on the top of the raw material slurry pool 2, the stirring assembly 1 mainly used to stir the lepidolite ore slurry on the inner wall of the raw material slurry pool 2 to keep it in a fluid state, and prevent the lepidolite ore slurry from settling;

[0039] A flotation chamber 7 is provided on the top of the flotation tank body 1, a partition 13 is provided on the inner side wall of the flotation chamber 7, a slurry feed pipe 15 is fixedly installed on the inner side wall of the flotation chamber 7, a pulley 10 is fixedly installed on the top of the flotation tank body 1, a stirring assembly 2 is provided on the top of the flotation tank body 1, the stirring assembly is mainly used to fully mix the lithium mica slurry with the reagent, a scraping assembly is provided on the top of the flotation tank body 1, the scraping assembly is mainly used to scrape the floated lithium mica ore, and a drug feed pipe 6 is inserted on one side of the flotation tank body 1.

[0040] Specifically, the stirring component includes a flywheel 3, a stirring roller 4, and a stirring blade 5. The stirring roller 4 is movably installed on the inner wall of the raw material slurry pool 2, the flywheel 3 is fixedly installed at one end of the stirring roller 4, and the stirring blade 5 is fixedly installed on the outside of the stirring roller 4.

[0041] In this embodiment, a belt is connected to the outer side of the flywheel 3, and the flywheel 3 is driven to rotate by a motor, thereby driving the stirring roller 4 and the stirring blade 5 to rotate, so as to stir the lithium mica ore slurry on the inner wall of the raw material slurry pool 2 to ensure a certain fluidity, thereby avoiding the blockage of the slurry inlet pipe 15, and at the same time making the slurry evenly distributed and ensuring the quality of the flotation ore selection.

[0042] Specifically, the second stirring component includes a vertical transmission shaft cylinder 14, a pulley 10, and a central support cylinder 23. The vertical transmission shaft cylinder 14 is fixedly installed on the top of the flotation tank body 1, and the central support cylinder 23 is fixedly installed on the bottom end of the vertical transmission shaft cylinder 14. The outer side of the central support cylinder 23 is fixedly connected to one end of the drug feed pipe 6, and the pulley 10 is fixedly installed on the top of the vertical transmission shaft cylinder 14.

[0043] In this embodiment, a vertical transmission shaft cylinder 14 is provided to mainly provide support for the operation of the stirring component 2, wherein a transmission shaft is movably installed on the inner wall of the vertical transmission shaft cylinder 14, wherein the pulley 10 is fixedly installed on the top of the transmission shaft, wherein the transmission shaft passes through the inner wall of the central support cylinder 23, wherein the central support cylinder 23 is mainly used for air intake and release of medicine.

[0044] Specifically, the second stirring assembly further includes a connecting rod 22 and an air inlet pipe 12 . The connecting rod 22 is provided on the outside of the central support tube 23 , and the air inlet pipe 12 is fixedly mounted on one end of the connecting rod 22 .

[0045] In this embodiment, the connecting rod 22 is mainly used in conjunction with the air inlet pipe 12 to allow air to enter the interior, thereby generating a large number of air bubbles so that the mineral raw materials can adhere to the surface of the bubbles.

[0046] Specifically, the stirring component 2 also includes a disc 24, a stirring blade 25, and a guide blade 26. The disc 24 is fixedly mounted on the bottom end of the central support cylinder 23, the stirring blade 25 is fixedly mounted on the bottom surface of the disc 24, and the guide blade 26 is opened on the outer surface of the stirring blade 25.

[0047] In this embodiment, the disc 24 and the stirring blade 25 are mainly used to stir the lithium mica ore slurry inside the flotation chamber 7 so that it can be fully mixed with the reagent, thereby generating more foam. The guide plate 26 diverts the lithium mica ore slurry under the drive of the stirring blade 25 and the disc 24, thereby ensuring that the lithium mica ore slurry is fully stirred, and rotates at a high speed to generate a higher negative pressure inside the lithium mica ore slurry, thereby allowing more air to enter, which is more conducive to the generation of bubbles.

[0048] Specifically, the second stirring component further includes a bottom tube 27 and a nozzle 28 . The bottom tube 27 is fixedly mounted on the bottom surface of the disc 24 , and the nozzle 28 is movably mounted on the outer side of the bottom tube 27 .

[0049] In this embodiment, the bottom tube 27 and the nozzle 28 are provided to control the stirring of the lepidolite ore slurry. The speed of the transmission shaft is controlled to control the expansion and contraction of the nozzle 28, thereby controlling the size of the negative pressure formed by the stirring. The nozzle 28 is mainly controlled by the centrifugal force to control the expansion and contraction length. The greater the speed, the greater the centrifugal force and the longer the expansion and contraction, and vice versa.

[0050] Specifically, the scraping assembly includes a drive motor 9, a drive flywheel 8, and a long rod 16. The drive motor 9 is fixedly mounted on the top surface of the flotation tank body 1, the drive flywheel 8 is movably mounted on the outside of the flotation tank body 1, and the long rod 16 is fixedly mounted on one end of the drive flywheel 8.

[0051] In this embodiment, a driving flywheel 8, a driving motor 9, and a long rod 16 are provided, which are mainly used for transmission, wherein the driving flywheel 8 is connected to the driving motor 9 through a belt, and the driving flywheel 8 drives the long rod 16 to rotate under the drive of the belt and the driving motor 9.

[0052] Specifically, the foam scraping assembly also includes a connecting rod 17, a scraper 18, a power supply 19, an electric push rod 20, and a slider 21. The connecting rod 17 is fixedly mounted on the outside of the long rod 16, the scraper 18 is fixedly mounted on the outside of the connecting rod 17, the power supply 19 is fixedly mounted on the outside of the long rod 16, the electric push rod 20 is fixedly mounted on one end of the power supply 19, and the slider 21 is movably mounted on the outside of the long rod 16. A wireless receiving module is provided in the power supply 19 for receiving external limit signals to control the telescopic movement of the electric push rod 20.

[0053] In this embodiment, the long rod 16 drives the connecting rod 17 to rotate, which in turn drives the scraper 18 to rotate to scrape the froth floating in the flotation chamber 7. The electric push rod 20 is then energized to drive the slider 21 to move along the outer side of the long rod 16, thereby scraping and cleaning the mineral material attached to the surface of the scraper 18, thereby improving the flotation grade.

[0054] Specifically, the scraping assembly also includes a telescopic chamber 29, a cleaning piece 30, and a pressure spring 31. The telescopic chamber 29 is opened at one end of the slider 21, the cleaning piece 30 is movably installed on the inner wall of the connecting rod 22, and one end of the pressure spring 31 is fixedly installed on the inner wall of the cleaning piece 30.

[0055] In this embodiment, the telescopic chamber 29 is provided to provide space for the movement of the cleaning sheet 30, wherein the pressure spring 31 is mainly used to press the cleaning sheet 30 so that it can always be in contact with the surface of the scraper 18, thereby improving the scraping of foam on the surface of the scraper 18.

[0056] A method for improving the grade of lepidolite flotation concentrate, comprising:

[0057] S1: First, the lepidolite ore is crushed and then wet-ball milled to obtain ore pulp;

[0058] S2: Based on S1, the lepidolite ore slurry to be floated is poured into the interior of the raw material slurry pool 2 for storage, and the flywheel 3 is driven to drive the stirring roller 4 and the stirring blade 5 to rotate and thereby stir the lepidolite ore slurry;

[0059] S3: Based on S2, the sealing plug at one end of the slurry inlet pipe 15 is removed, and the lepidolite ore slurry in the raw slurry pool 2 enters the flotation chamber 7. The pulley 10 is driven by an external motor to further drive the disc 24 and the stirring blade 25 to rotate, thereby stirring the lepidolite ore slurry. As the stirring progresses, the reagent is injected into the reagent inlet pipe 6 to react with the lepidolite ore slurry.

[0060] S4: Based on S2, after the lepidolite ore slurry containing the reagent is fully stirred, the slurry is aerated and foamed, and the foam product is returned to the roughing tank through the sweeping of the long rod 16 and the scraper 18.

[0061] During use, the lithium mica ore slurry to be floated is poured into the interior of the raw material slurry pool 2 for storage, and a belt is connected to the outer side of the flywheel 3, and then the flywheel 3 is driven to rotate by the motor, thereby driving the stirring roller 4 and the stirring blade 5 to rotate, thereby stirring the lithium mica ore slurry on the inner wall of the raw material slurry pool 2 to ensure a certain fluidity, thereby avoiding the blockage of the slurry inlet pipe 15, wherein a motor is provided on the top of the motor seat 11, thereby driving the pulley 10 to rotate, wherein the motor and the pulley 10 are connected by a belt, wherein the transmission shaft on the inner wall of the vertical transmission shaft cylinder 14 rotates under the drive of the pulley 10 The disc 24 is driven to rotate, and the stirring piece 25 and the guide piece 26 are driven to rotate. At this time, the sealing plug at one end of the slurry inlet pipe 15 is controlled and taken out. At this time, the lepidolite ore slurry enters the flotation chamber 7. At this time, the disc 24 and the stirring piece 25 stir the lepidolite ore slurry. As the stirring proceeds, the reagent is injected into the drug inlet pipe 6 to react with the lepidolite ore slurry. The guide piece 26 diverts the lepidolite ore slurry under the drive of the stirring piece 25 and the disc 24, thereby ensuring that the lepidolite ore slurry is fully stirred and the lepidolite ore slurry is stirred at high speed. The rotation generates a higher negative pressure inside the lepidolite ore slurry, so that more air enters the center support tube 23 through the air inlet pipe 12, which is more conducive to the generation of bubbles. As the lepidolite ore slurry is stirred, a large amount of foam will be generated. At this time, the drive motor 9 is energized to make it in operation. At this time, the drive flywheel 8 rotates under the action of the belt, thereby driving the long rod 16 to rotate, wherein the other end of the long rod 16 is movably connected to the top of the flotation tank body 1. At this time, the long rod 16 drives the connecting rod 17 and the scraper 18 to do a circular motion. As the scraper 18 rotates, the flotation chamber 7 will be The overflowing foam is scraped and removed from the inside of the flotation chamber 7. In order to ensure that the foam does not adhere to the surface of the scraper 18 and form agglomerates, a signal is transmitted to the control module inside the power supply 19 to operate the electric push rod 20, causing it to perform a telescopic movement, thereby driving the slider 21 to perform a left and right reciprocating movement along the outside of the long rod 16. The inner side of the cleaning sheet 30 is engaged with the outer side of the scraper 18. The cleaning sheet 30 is driven by the slider 21 to move along the outer side of the scraper 18, thereby scraping off the foam attached to the outer surface of the scraper 18 to prevent the foam from drying up.

[0062] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0063] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the content of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A device for improving the grade of lepidolite flotation concentrate, comprising a flotation cell body (1), characterized in that: A raw material slurry pool (2) is fixedly mounted on one side surface of the flotation cell body (1), and a stirring assembly (1) is provided on the top of the raw material slurry pool (2). The stirring assembly (1) is mainly used to stir the lepidolite ore slurry on the inner wall of the raw material slurry pool (2) to keep it in a fluid state, thereby preventing the lepidolite ore slurry from settling. The top of the flotation cell body (1) is provided with a flotation chamber (7), the inner side wall of the flotation chamber (7) is provided with a partition (13), the inner side wall of the flotation chamber (7) is fixedly installed with a pulp inlet pipe (15), the top of the flotation cell body (1) is fixedly installed with a pulley (10), the top of the flotation cell body (1) is provided with a stirring assembly 2, the stirring assembly 2 is mainly used to fully mix the lepidolite ore pulp raw material with the reagent, the top of the flotation cell body (1) is provided with a scraping assembly, the scraping assembly is mainly used to scrape the floated lepidolite ore material, and a pharmaceutical inlet pipe (6) is plugged into one side of the flotation cell body (1); The stirring assembly 1 comprises a flywheel 1 (3), a stirring roller (4), and a stirring blade (5); the stirring roller (4) is movably mounted on the inner wall of the raw material slurry pool (2); the flywheel 1 (3) is fixedly mounted on one end of the stirring roller (4); and the stirring blade (5) is fixedly mounted on the outer side of the stirring roller (4); The second stirring assembly comprises a vertical transmission shaft cylinder (14), a pulley (10), and a central support cylinder (23); the vertical transmission shaft cylinder (14) is fixedly mounted on the top of the flotation tank body (1); the central support cylinder (23) is fixedly mounted on the bottom end of the vertical transmission shaft cylinder (14); the outer side of the central support cylinder (23) is fixedly connected to one end of the drug inlet pipe (6); and the pulley (10) is fixedly mounted on the top end of the vertical transmission shaft cylinder (14); The stirring assembly 2 further comprises a disc (24), a stirring blade (25), and a guide blade (26), wherein the disc (24) is fixedly mounted on the bottom end of the central support cylinder (23), the stirring blade (25) is fixedly mounted on the bottom surface of the disc (24), and the guide blade (26) is opened on the outer surface of the stirring blade (25); The foam scraping assembly further comprises a connecting rod (17), a scraper (18), a power supply (19), an electric push rod (20), and a slider (21); the connecting rod (17) is fixedly mounted on the outside of the long rod (16); the scraper (18) is fixedly mounted on the outside of the connecting rod (17); the power supply (19) is fixedly mounted on the outside of the long rod (16); the electric push rod (20) is fixedly mounted on one end of the power supply (19); and the slider (21) is movably mounted on the outside of the long rod (16).

2. The device for improving the grade of lepidolite flotation concentrate according to claim 1, wherein: The second stirring assembly further comprises a connecting rod (22) and an air inlet pipe (12). The connecting rod (22) is provided on the outside of the central support cylinder (23), and the air inlet pipe (12) is fixedly mounted on one end of the connecting rod (22).

3. The device for improving the grade of lepidolite flotation concentrate according to claim 2, wherein: The second stirring component further comprises a bottom tube (27) and a nozzle (28). The bottom tube (27) is fixedly mounted on the bottom surface of the disc (24), and the nozzle (28) is movably mounted on the outside of the bottom tube (27).

4. The device for improving the grade of lepidolite flotation concentrate according to claim 3, wherein: The foam scraping assembly comprises a driving motor (9), a driving flywheel (8), and a long rod (16); the driving motor (9) is fixedly mounted on the top surface of the flotation tank body (1); the driving flywheel (8) is movably mounted on the outside of the flotation tank body (1); and the long rod (16) is fixedly mounted on one end of the driving flywheel (8).

5. The device for improving the grade of lepidolite flotation concentrate according to claim 4, characterized in that: The foam scraping assembly further comprises a telescopic chamber (29), a cleaning piece (30), and a pressure spring (31); the telescopic chamber (29) is opened at one end of the slider (21); the cleaning piece (30) is movably mounted on the inner wall of the connecting rod (22); and one end of the pressure spring (31) is fixedly mounted on the inner wall of the cleaning piece (30).

6. A method for improving the grade of lepidolite flotation concentrate, applied to the device for improving the grade of lepidolite flotation concentrate according to claim 5, comprising: S1: First, the lepidolite ore is crushed and then wet-milled to obtain ore pulp; S2: Based on S1, the lepidolite ore slurry to be floated is poured into the interior of the raw material slurry pool (2) for storage, and the flywheel (3) is driven to drive the stirring roller (4) and the stirring blade (5) to rotate to stir the lepidolite ore slurry; S3: Based on S2, the sealing plug at one end of the slurry inlet pipe (15) is removed, and the raw lepidolite slurry in the raw slurry pool (2) enters the flotation chamber (7). The pulley (10) is driven by an external motor to further drive the disc (24) and the stirring piece (25) to rotate, thereby stirring the raw lepidolite slurry. As the stirring proceeds, the reagent is injected into the reagent inlet pipe (6) to react with the raw lepidolite slurry. S4: Based on S2, after the raw slurry of the lithium mica ore containing the reagent is fully stirred, the raw slurry is aerated and foamed, and the foam product is returned to the roughing tank through the sweeping of the long rod (16) and the scraper (18).

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