Roller mill for tailing treatment

Abstract

The utility model relates to the technical field of roller mills, and discloses a roller mill for tailing treatment, which comprises a roller mill body, a movable roller is movably mounted in the roller mill body, a fixed roller is rotatably mounted in the roller mill body, a steady flow bin is fixedly mounted at the top of the roller mill body, and a discharge hopper is fixedly mounted at the bottom of the roller mill body. A middle stock bin is fixedly installed at the top of the steady flow bin, a material level detector is fixedly installed in the middle stock bin, two sets of installation plates are symmetrically and fixedly installed at the top of the middle stock bin, a material guiding assembly is arranged between the two sets of installation plates, and a dredging assembly comprising a first dredging tooth frame and a second dredging tooth frame is arranged between the steady flow bin and the middle stock bin. By arranging the dredging assembly, the tailings are prevented from being blocked in the flow stabilizing bin, normal feeding of the tailings is guaranteed, meanwhile, when the tailings are stirred through the dredging tooth frame I and the dredging tooth frame II, the stacked caked tailings can be disturbed and crushed, and the possibility that the tailings are caked is reduced.

Description

Technical Field

[0001] This utility model relates to the field of roller mill technology, and in particular to a roller mill for tailings treatment. Background Technology

[0002] Tailings refer to the solid waste remaining after the main useful components are extracted during ore beneficiation. Since most ore beneficiation plants use wet beneficiation processes, such as flotation and gravity separation, a large amount of water is used in these processes to separate and enrich useful minerals, resulting in tailings carrying a large amount of moisture and usually having a high humidity. In order to treat tailings to meet the application requirements of different industries, it is usually necessary to refine their particle size. Roller mills are generally used for this process. Roller mills are machines that use the low-pressure bed grinding principle to grind materials. High-pressure roller mills are a type of roller mill. High-pressure roller mills can be used to refine the particle size of tailings to meet application requirements.

[0003] When using a high-pressure roller mill to process tailings, it is necessary to ensure that the amount of tailings in the stabilizing bin is uniform and stable to ensure stable feeding of the roller mill. Tailings with high moisture content may clump when they accumulate inside the stabilizing bin. At the same time, high moisture content of tailings may cause slow discharge speed, and in severe cases, material blockage may occur, affecting the tailings processing effect.

[0004] Therefore, we propose a roller mill for tailings treatment. Utility Model Content

[0005] The present invention aims to solve the technical problems existing in the prior art and provide a roller mill for tailings treatment.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a roller mill for tailings treatment, comprising a roller mill body, a movable roller movably installed inside the roller mill body, a fixed roller rotatably installed inside the roller mill body, a flow stabilizing chamber fixedly installed on the top of the roller mill body, a discharge hopper fixedly installed on the bottom of the roller mill body, an intermediate silo fixedly installed on the top of the flow stabilizing chamber, a material level detector fixedly installed inside the intermediate silo, two sets of mounting plates symmetrically fixedly installed on the top of the intermediate silo, a material guiding assembly provided between the two sets of mounting plates, and a guiding assembly including a guiding tooth frame one and a guiding tooth frame two provided between the flow stabilizing chamber and the intermediate silo;

[0007] The first guide tooth frame is slidably installed inside the intermediate silo and the stabilizing silo. The second guide tooth frame is located between the stabilizing silo and the intermediate silo. The second guide tooth frame is slidably installed inside the stabilizing silo and the intermediate silo. The guide teeth on the first guide tooth frame and the second guide tooth frame are staggered. The second drive component is provided on the upper side of the first guide tooth frame and the second guide tooth frame.

[0008] Preferably, the material guiding assembly includes a material guiding plate, two sets of material guiding plates are rotatably installed between two sets of mounting plates, two sets of side material guiding plates are rotatably installed on the intermediate hopper, a hydraulic telescopic rod is fixedly installed on the intermediate hopper, the telescopic end of the hydraulic telescopic rod is hinged to the bottom of the side material guiding plate, and side return hoppers are fixedly installed on both sides of the intermediate hopper.

[0009] Preferably, the material guiding assembly further includes a baffle plate, which is fixedly installed between two sets of mounting plates, and a driving assembly is provided on the mounting plates.

[0010] Preferably, the drive assembly includes a bidirectional hydraulic telescopic rod, which is fixedly mounted on a mounting plate. Two sets of movable seats are slidably mounted on the mounting plate. The movable seats are fixedly connected to the telescopic ends of the bidirectional hydraulic telescopic rod. Each movable seat is composed of two rectangular blocks and a cylindrical short shaft. A groove is provided on the intermediate guide plate, and the cylindrical short shaft in the movable seat is slidably connected to the groove on the intermediate guide plate.

[0011] Preferably, the second drive assembly includes a fixing frame. Two sets of fixing frames are arranged on the upper side of the first guide tooth frame and the second guide tooth frame. The fixing frames are fixedly installed inside the intermediate hopper. A threaded screw 2 is rotatably installed on the lower side of one set of fixing frames, and a threaded screw 1 is rotatably installed on the lower side of the other set of fixing frames. The threads on the threaded screw 1 and the threaded screw 2 are opposite in direction. Both the threaded screw 1 and the threaded screw 2 are threadedly connected to a drive seat.

[0012] Preferably, the drive seat is slidably mounted on the fixed frame, and the drive assembly two also includes a connecting plate, which is fixedly mounted on the bottom of the drive seat and is fixedly connected to the corresponding guide tooth frame one and guide tooth frame two.

[0013] Preferably, the second drive assembly further includes a second drive gear, which is fixedly installed at one end of the second threaded screw and rotatably installed on the intermediate hopper. A third drive gear is fixedly installed at one end of the first threaded screw and rotatably installed on the intermediate hopper. A first drive gear is rotatably installed between the second and the third drive gears, and the first drive gear meshes with the second and the third drive gears.

[0014] This utility model provides a roller mill for tailings treatment, which has the following improvements and advantages compared with the prior art: By setting up a guiding component, the tailings feed into the intermediate silo and the stabilizing silo, and then accumulate on the moving roller and the fixed roller to form a material layer. If the tailings with high moisture content experience slow feeding at the stabilizing silo, the driving component two drives the guiding tooth frame one and the guiding tooth frame two to move in opposite directions inside the stabilizing silo and the intermediate silo. During the movement, the guiding tooth frame one and the guiding tooth frame two can agitate the tailings material layer, thereby accelerating the flow speed of the tailings and preventing tailings from clogging in the stabilizing silo, ensuring normal feeding of tailings. At the same time, when the guiding tooth frame one and the guiding tooth frame two agitate the tailings, they can disturb and break up the accumulated agglomerated tailings, reducing the possibility of tailings agglomeration and improving the treatment effect of tailings with high moisture content. Attached Figure Description

[0015] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0016] Figure 1 A schematic diagram of the structure of a roller mill for tailings treatment proposed in this utility model;

[0017] Figure 2 A schematic diagram of the internal structure of the roller mill body in a tailings treatment roller mill proposed in this utility model;

[0018] Figure 3 A schematic diagram of the installation of the material guiding component in a roller mill for tailings treatment, as proposed in this utility model.

[0019] Figure 4 A schematic diagram of the state of the side guide plate and the middle guide plate in a tailings processing roller mill proposed for the present utility model when the tailings are being recycled.

[0020] Figure 5 A schematic diagram illustrating the installation of the movable seat and intermediate guide plate in a roller mill for tailings treatment, as proposed in this utility model.

[0021] Figure 6 A schematic diagram of the guiding component in a roller mill for tailings treatment proposed in this utility model;

[0022] Figure 7 for Figure 6 Enlarged diagram of point A in the middle.

[0023] Legend:

[0024] 1. Roller mill body; 2. Flow stabilizing bin; 3. Discharge hopper; 4. Intermediate hopper; 5. Side return hopper; 6. Mounting plate; 7. Bidirectional hydraulic telescopic rod; 8. Moving seat; 9. Moving roller; 10. Fixed roller; 11. Side guide plate; 12. Baffle plate; 13. Intermediate guide plate; 14. Material level detector; 15. Guide gear frame one; 16. Guide gear frame two; 17. Hydraulic telescopic rod; 18. Connecting plate; 19. Fixing frame; 20. Threaded screw one; 21. Threaded screw two; 22. Drive seat; 23. Drive gear one; 24. Drive gear two; 25. Drive gear three. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] A roller mill for tailings treatment, such as Figure 1 - Figure 7As shown, the mill includes a roller mill body 1. A movable roller 9 is movably installed inside the roller mill body 1, and a fixed roller 10 is rotatably installed inside the roller mill body 1. A flow stabilizing chamber 2 is fixedly installed on the top of the roller mill body 1, and a discharge hopper 3 is fixedly installed on the bottom of the roller mill body 1. An intermediate material hopper 4 is fixedly installed on the top of the flow stabilizing chamber 2. A material level detector 14 is fixedly installed inside the intermediate material hopper 4. The material level detector 14 is electrically connected to an external controller and can detect the thickness of the material layer above the movable roller 9 and the fixed roller 10 in real time. Two sets of mounting plates 6 are symmetrically fixedly installed on the top of bin 4. A material guiding component is set between the two sets of mounting plates 6. The material guiding component can guide the tailings during tailings feeding. When guiding the tailings, the thickness of the material layer above the moving roller 9 and the fixed roller 10 adjusts the size of the inlet inside the intermediate bin 4 to control the feed rate. At the same time, when the load inside the roller mill body 1 is too large, the tailings feed flow direction is switched in time through the material guiding component to reduce the load on the roller mill body 1 in emergency situations. A flow stabilizing bin 2 is set between the intermediate bin 4 and the intermediate bin 4. Equipped with a guiding component, the tailings with high moisture content are guided into the intermediate silo 4 and the stabilizing silo 2, reducing tailings agglomeration and minimizing the possibility of blockage when high-moisture tailings are fed into the stabilizing silo 2. Through the material guiding component, the tailings to be processed are conveyed by an external conveyor belt to the intermediate silo 4 and fall into the stabilizing silo 2 for feeding. After entering the intermediate silo 4, the material guiding component guides the flow direction of the tailings. Based on the material layer thickness detected by the material level detector 14, the material guiding component guides the flow direction. The size of the feed inlet inside the intermediate silo 4 is adjusted to ensure stable feeding. At the same time, when the tailings enter the intermediate silo 4, they come into contact with the guiding components. The guiding components can collide with the feeding tailings multiple times to break up any agglomerated tailings. After entering the intermediate silo 4, the tailings fall into the stabilizing flow silo 2 and accumulate above the moving roller 9 and the fixed roller 10 to form a material layer. The guiding components come into contact with the tailings to reduce the possibility of tailings agglomeration and prevent damp tailings from clogging the stabilizing flow silo 2, which would affect feeding and subsequent processing.

[0027] Furthermore, the material guiding assembly includes a baffle plate 12, which is fixedly installed between two sets of mounting plates 6. The baffle plate 12 has an inverted V-shaped structure. Two sets of intermediate material guiding plates 13 are rotatably installed between the two sets of mounting plates 6. A drive assembly 1 is provided on the mounting plate 6. The drive assembly 1 is used to drive the intermediate material guiding plates 13 to rotate for angle and position adjustment. The drive assembly 1 includes a bidirectional hydraulic telescopic rod 7, which is fixedly installed on the mounting plate 6 and electrically connected to an external control device. Two sets of movable seats 8 are slidably installed on the mounting plate 6. The movable seats 8 are fixedly connected to the telescopic ends of the bidirectional hydraulic telescopic rod 7. The movable seats 8 are composed of two rectangular blocks and a cylindrical short shaft. A groove is provided on the intermediate material guiding plate 13. The cylindrical short shaft in the movable seat 8 is slidably connected to the groove on the intermediate guide plate 13. Two sets of side guide plates 11 are rotatably installed on the intermediate silo 4. A hydraulic telescopic rod 17 is fixedly installed on the intermediate silo 4. The telescopic end of the hydraulic telescopic rod 17 is hinged to the bottom of the side guide plate 11. The hydraulic telescopic rod 17 is electrically connected to an external controller. By controlling the telescopic end of the hydraulic telescopic rod 17 to extend and retract, the side guide plate 11 is rotated to adjust the angle position. Side return hoppers 5 are fixedly installed on both sides of the intermediate silo 4. The side return hoppers 5 are hollow structures and can be connected to external return pipes. With the material guiding components, the tailings feed into the intermediate silo 4 and the stabilizing silo 2, and then accumulate on the moving roller 9 and the fixed roller 10 to form a material layer. During the roller milling process, the material level detector 14 detects the thickness of the material layer on the moving roller 9 and the fixed roller 10. When the tailings are conveyed to the upper side of the intermediate silo 4 by the external conveyor belt and fall into the intermediate silo 4, the tailings come into contact with the intermediate guide plate 13 and slide down to the side guide plate 11, where they continue to slide until they enter the intermediate silo 4. When the tailings are fed into the intermediate silo 4, they are broken up by two impacts with the intermediate guide plate 13 and the side guide plate 11. A safe range for the material layer thickness is set (a safe value and a critical value for the material layer thickness are set). When the material layer thickness is greater than the safe value but less than the critical value, the bidirectional hydraulic telescopic rod 7 is controlled to drive according to the material layer thickness detected by the material level detector 14. The moving intermediate guide plate 13 adjusts the size of the feed inlet formed between the intermediate guide plate 13 and the side guide plate 11 to adjust the feed rate. When the material layer thickness exceeds the critical value, the load in the roller mill body 1 is too large. The external conveyor belt is manually shut down, and the intermediate guide plate 13 and the side guide plate 11 are adjusted to the set position by controlling the bidirectional hydraulic telescopic rod 7 and the hydraulic telescopic rod 17. At this time, the tailings that are kept feeding due to inertia fall to the intermediate guide plate 13 during the conveyor belt shutdown process, slide down to the side guide plate 11, and continue to slide down along the side guide plate 11 into the side return hopper 5, and then enter the external return pipe for return (see the diagram of the position of the side guide plate 11 and the intermediate guide plate 13 during tailings return). Figure 4 As shown, this reduces the load inside the roller mill body 1 and improves the safety of equipment use.

[0028] Furthermore, the guiding component includes a guiding tooth frame 15, which is slidably installed inside the intermediate silo 4 and the stabilizing silo 2. A guiding tooth frame 2 16 is provided between the stabilizing silo 2 and the intermediate silo 4, and is slidably installed inside the stabilizing silo 2 and the intermediate silo 4. The guiding teeth on the guiding tooth frame 15 and the guiding tooth frame 2 16 are staggered. In the initial state, the guiding tooth frame 15 and the guiding tooth frame 2 16 are both located on the inner side of the stabilizing silo 2 and the intermediate silo 4 and are in contact with the inner walls of the stabilizing silo 2 and the intermediate silo 4. A driving component 2 is provided on the upper side of the guiding tooth frame 15 and the guiding tooth frame 2 16. The driving component 2 is used to drive the guiding tooth frame 15 and the guiding tooth frame 2 16 in the stabilizing silo 2 and the intermediate silo 4. The internal movement is in opposite directions. The second drive assembly includes a fixed frame 19. Two sets of fixed frames 19 are set on the upper side of the first guide gear frame 15 and the second guide gear frame 16. The fixed frames 19 are fixedly installed inside the intermediate hopper 4. A threaded screw 21 is rotatably installed on the lower side of one set of fixed frames 19, and a threaded screw 20 is rotatably installed on the lower side of the other set of fixed frames 19. The threads on the first threaded screw 20 and the second threaded screw 21 are in opposite directions. Both the first threaded screw 20 and the second threaded screw 21 are threadedly connected to a drive seat 22. The drive seat 22 is slidably installed on the fixed frame 19. A connecting plate 18 is fixedly installed at the bottom of the drive seat 22. The connecting plate 18 is fixedly connected to the corresponding first guide gear frame 15 and the second guide gear frame 16. When the threaded screw... When screw 20 and threaded rod 21 rotate synchronously, the two sets of drive seats 22 slide in opposite directions. A drive gear 24 is fixedly mounted on one end of threaded rod 21, and drive gear 24 is rotatably mounted on the intermediate silo 4. A drive gear 3 25 is fixedly mounted on one end of threaded rod 20, and drive gear 3 25 is rotatably mounted on the intermediate silo 4. A drive gear 23 is rotatably mounted between drive gear 24 and drive gear 3 25, and drive gear 23 meshes with drive gear 24 and drive gear 3 25. A servo motor is fixedly mounted on the intermediate silo 4, and the servo motor is electrically connected to an external controller. The output shaft of the servo motor is fixedly connected to drive gear 23. Through the installation of a guide assembly, tailings feed through the intermediate silo... After passing through bin 4 and stabilizing bin 2, the tailings accumulate on moving roller 9 and fixed roller 10 to form a material layer. If the tailings with high moisture content experience slow feeding at stabilizing bin 2, the drive component 2 drives the guide tooth frame 15 and guide tooth frame 26 to move in opposite directions inside stabilizing bin 2 and intermediate bin 4. During their movement, guide tooth frame 15 and guide tooth frame 2 can agitate the tailings layer, thereby accelerating the flow of tailings, preventing tailings from clogging stabilizing bin 2, and ensuring normal tailings feeding. At the same time, when guide tooth frame 15 and guide tooth frame 2 are agitating the tailings, they can also disturb and break up the accumulated clumps of tailings, reducing the possibility of tailings clumping and improving the treatment effect of tailings with high moisture content.

[0029] The working principle of this utility model is as follows: the tailings are transported to the upper side of the intermediate silo 4 by an external conveyor belt and then fall into the interior of the intermediate silo 4.

[0030] After entering the intermediate silo 4, the tailings first collide with the intermediate guide plates 13 on both sides and slide down. After sliding down the intermediate guide plates 13, they collide with the side guide plates 11 again and slide down into the intermediate silo 4. The tailings are broken up by the two collisions with the intermediate guide plates 13 and the side guide plates 11. After entering the intermediate silo 4, the tailings fall through the flow stabilization chamber 2 and accumulate above the moving roller 9 and the fixed roller 10 to form a material layer to ensure stable feeding of the roller mill body 1 during roller milling.

[0031] The safety range for the material layer thickness is set (setting the safety value and critical value of the material layer thickness). When the material layer thickness is greater than the safety value but less than the critical value, the bidirectional hydraulic telescopic rod 7 is controlled to drive the moving seat 8 to slide according to the material layer thickness detected by the material level detector 14. When the moving seat 8 slides, it can drive the intermediate guide plate 13 to rotate to adjust the size of the feed inlet formed between the intermediate guide plate 13 and the side guide plate 11, so as to adjust the amount of tailings fed per unit time. When the detected material layer thickness exceeds the critical value, it indicates that the load in the roller mill body 1 is too large, and the external conveyor is manually shut down. As the conveyor belt stops momentarily, it and some tailings continue to move due to inertia. Some tailings will still fall from above the intermediate hopper 4. By controlling the bidirectional hydraulic telescopic rods 7 and 17, the intermediate guide plate 13 and side guide plate 11 are adjusted to their set positions. At this time, the tailings, still feeding due to inertia, fall onto the intermediate guide plate 13 and slide down onto the side guide plate 11, continuing to slide down along it into the side return hopper 5 before entering the external return pipe for return (see the diagram showing the positions of the side guide plate 11 and intermediate guide plate 13 during tailings return). Figure 4 (as shown);

[0032] If the tailings with high moisture content experience slow feeding at the stabilizing bin 2, the servo motor drives the drive gear 23 to rotate. When drive gear 23 rotates, it meshes with drive gears 24 and 25 to drive them to rotate synchronously. When drive gear 24 and guide gear 15 rotate, they drive threaded screws 21 and 20 to rotate synchronously. When threaded screws 20 and 21 rotate, their drive seats 22 move in opposite directions, driving guide gears 15 and 26 to move in opposite directions inside the stabilizing bin 2 and intermediate bin 4. During their movement, the guide gear 15 and guide gear 2 16 can agitate the tailings layer, thereby accelerating the flow rate of the tailings and preventing them from clogging the stabilizing bin 2, ensuring normal tailings feeding. At the same time, while agitating the tailings, the guide gear 15 and guide gear 2 16 can disturb and break up the accumulated clumps of tailings. When the guide gear 15 and guide gear 2 16 move in opposite directions to the side, that is, to be in contact with the inner wall of the intermediate bin 4 and the stabilizing bin 2, the servo motor drives the drive gear 23 to rotate in the opposite direction to drive the guide gear 15 and guide gear 2 16 to move in the opposite direction again.

[0033] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A roller mill for tailings treatment, comprising a roller mill body (1), a movable roller (9) movably mounted inside the roller mill body (1), a fixed roller (10) rotatably mounted inside the roller mill body (1), a flow stabilizing bin (2) fixedly mounted on the top of the roller mill body (1), and a discharge hopper (3) fixedly mounted on the bottom of the roller mill body (1), characterized in that: The top of the steady flow bin (2) is fixedly installed with an intermediate bin (4), the inside of the intermediate bin (4) is fixedly installed with a material level detector (14), the top of the intermediate bin (4) is fixedly installed with two groups of installation plates (6), the two groups of installation plates (6) are provided with a material guiding assembly, and the steady flow bin (2) and the intermediate bin (4) are provided with a dredging assembly comprising a dredging rack one (15) and a dredging rack two (16); The dredging rack one (15) is slidingly installed in the inside of the intermediate bin (4) and the steady flow bin (2), the dredging rack two (16) is arranged between the steady flow bin (2) and the intermediate bin (4), the dredging rack two (16) is slidingly installed in the inside of the steady flow bin (2) and the intermediate bin (4), the dredging teeth on the dredging rack one (15) and the dredging rack two (16) are distributed in a staggered manner, and the upper side of the dredging rack one (15) and the dredging rack two (16) is provided with a driving assembly two.

2. A roller mill for tailings treatment according to claim 1, characterized in that: The material guiding assembly comprises material guiding plates (13), the two groups of material guiding plates (13) are rotatably installed between the two groups of installation plates (6), the intermediate bin (4) is rotatably installed with two groups of side material guiding plates (11), the intermediate bin (4) is fixedly installed with a hydraulic telescopic rod (17), the telescopic end of the hydraulic telescopic rod (17) is hingedly connected to the bottom of the side material guiding plate (11), and the intermediate bin (4) is fixedly installed with a side material return hopper (5) on the two sides.

3. A roller mill for tailings treatment according to claim 2, characterised in that: The material guiding assembly further comprises a shielding plate (12), the shielding plate (12) is fixedly installed between the two groups of installation plates (6), and the installation plate (6) is provided with a driving assembly one.

4. A roller mill for tailings treatment according to claim 3, characterised in that: The driving assembly one comprises a bidirectional hydraulic telescopic rod (7), the bidirectional hydraulic telescopic rod (7) is fixedly installed on the installation plate (6), the installation plate (6) is slidingly installed with two groups of moving seats (8), the moving seat (8) is fixedly connected to the telescopic end of the bidirectional hydraulic telescopic rod (7), the moving seat (8) is combined by two rectangular blocks and a cylindrical short shaft, the intermediate material guiding plate (13) is provided with a sliding groove, and the cylindrical short shaft in the moving seat (8) is slidingly connected to the sliding groove in the intermediate material guiding plate (13).

5. A roller mill for tailings treatment according to claim 1, characterized in that: The driving assembly two comprises a fixed frame (19), the two groups of fixed frames (19) are arranged on the upper side of the dredging rack one (15) and the dredging rack two (16), the fixed frame (19) is fixedly installed in the inside of the intermediate bin (4), one of the fixed frames (19) is rotatably installed with a threaded screw rod two (21) on the lower side, the other fixed frame (19) is rotatably installed with a threaded screw rod one (20) on the lower side, the threaded directions of the threaded screw rod one (20) and the threaded screw rod two (21) are opposite, and the threaded screw rod one (20) and the threaded screw rod two (21) are both threadedly connected with a driving seat (22).

6. A roller mill for tailings treatment according to claim 5, characterised in that: The driving seat (22) is slidingly installed on the fixed frame (19), the driving assembly two further comprises a connecting plate (18), the connecting plate (18) is fixedly installed on the bottom of the driving seat (22), and the connecting plate (18) is fixedly connected with the corresponding dredging rack one (15) and the dredging rack two (16).

7. A roller mill for tailings treatment according to claim 5, characterized in that: The driving assembly two further comprises a driving gear two (24) fixedly installed at one end of the threaded rod two (21), the driving gear two (24) is rotatably installed on the intermediate bin (4), one end of the threaded rod one (20) is fixedly installed with a driving gear three (25), the driving gear three (25) is rotatably installed on the intermediate bin (4), the driving gear one (23) is rotatably installed between the driving gear two (24) and the driving gear three (25), the driving gear one (23) is meshed with the driving gear two (24) and the driving gear three (25).

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