Red mud settling device for alumina production

Abstract

The utility model discloses a kind of red mud settling devices for alumina production, including tank body, the top of the tank body is equipped with feed pipe, overflow pipe is equipped on the lateral wall of the tank body;It further includes the vertical bottom sealing straight pipe of bottom part setting, the lateral wall of the straight pipe is connected with the inclined setting sludge discharge pipe that penetrates downwards, the straight pipe is equipped with the propulsion component that pushes sludge discharges;The top of the tank body is equipped with the showering component that washes tank body.

Description

Technical Field

[0001] This utility model belongs to the field of red mud settling technology, specifically referring to a red mud settling device for alumina production. Background Technology

[0002] In the alumina production process, red mud settling is a crucial step in the separation and extraction of alumina, and its efficiency and quality directly affect the production cost and product quality of alumina.

[0003] Currently, when red mud settling devices are in operation, as production continues, a large amount of red mud sediment will accumulate at the bottom of the settling device for a long time, which is difficult to completely drain, resulting in residue. Long-term accumulation can easily cause caking and blockage, seriously affecting the continuity of the production process.

[0004] Moreover, red mud itself is corrosive, especially in the alkaline environment of alumina production, where this corrosiveness is even more pronounced. Prolonged contact with red mud can easily corrode the internal components of the settling device. Once corroded, the equipment's mechanical properties and structural stability gradually decline, leading to equipment failure. This not only shortens the equipment's lifespan and increases maintenance and replacement costs but can also cause production interruptions, resulting in significant economic losses for the company. Utility Model Content

[0005] The technical problem this invention aims to solve is that sediment accumulates at the bottom of the equipment for a long time, making it difficult to remove, and the red mud can also corrode the equipment, affecting its service life.

[0006] To achieve the above functions, the technical solution adopted by this utility model is as follows: a red mud settling device for alumina production, including a tank body, a feed pipe provided at the top of the tank body, and an overflow pipe provided on the side wall of the tank body;

[0007] It also includes a straight pipe with a bottom seal vertically installed at the bottom of the tank, a sludge discharge pipe that is inclined downwards and is connected through the side wall of the straight pipe, and a propulsion component for pushing sludge out is provided inside the straight pipe;

[0008] The top of the tank is equipped with a rinsing assembly for cleaning the tank.

[0009] Furthermore, the propulsion assembly includes a motor and a drive shaft. The motor is mounted at the bottom of the straight tube, and the drive shaft is vertically rotatably mounted on the bottom wall of the straight tube and connected to the motor shaft. Screw blades are fixed on the drive shaft.

[0010] Furthermore, the rinsing assembly includes a spray pipe and a connecting pipe. The spray pipe is installed on the top wall of the tank, and high-pressure nozzles are evenly distributed on the bottom wall of the spray pipe. The connecting pipe is connected to the spray pipe and penetrates the top wall of the tank.

[0011] Furthermore, a connecting block is provided at the top of the drive shaft, and scrapers are fixed to both sides of the connecting block near the side wall of the tank, with guide plates installed on the scrapers.

[0012] Preferably, the tank body has a transparent observation window on its side wall.

[0013] The beneficial effects achieved by adopting the above-described structure are as follows:

[0014] 1. By setting up auger blades and mud discharge pipes, it is easy to transport the red mud deposited at the bottom out and avoid mud discharge blockage;

[0015] 2. By installing spray pipes and high-pressure nozzles, the inside of the tank can be rinsed after the deposited red mud is cleaned. With the help of scrapers, the residual red mud inside the tank can be effectively cleaned, preventing the red mud residue from corroding the inner wall of the tank. Attached Figure Description

[0016] Figure 1 This is an overall structural diagram of a red mud settling device for alumina production proposed in this utility model;

[0017] Figure 2 The present invention provides a cross-sectional structure of a red mud settling device for alumina production. Figure 1 ;

[0018] Figure 3 The present invention provides a cross-sectional structure of a red mud settling device for alumina production. Figure 2 ;

[0019] Figure 4 for Figure 2 Enlarged view of a portion of point A in the middle.

[0020] The components are as follows: 1. Tank body, 2. Feed pipe, 3. Overflow pipe, 4. Straight pipe, 5. Sludge discharge pipe, 6. Propulsion assembly, 7. Spraying assembly, 8. Motor, 9. Drive shaft, 10. Screwdriver blade, 11. Spray pipe, 12. Connecting pipe, 13. High-pressure nozzle, 14. Connecting block, 15. Scraper, 16. Guide plate, 17. Observation window. Detailed Implementation

[0021] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0022] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The utility model will be further described in detail below with reference to the accompanying drawings. Example 1

[0023] like Figure 1-4 As shown, the present invention proposes a red mud settling device for alumina production, including a tank 1, a feed pipe 2 at the top of the tank 1, and an overflow pipe 3 on the side wall of the tank 1; slurry mixed with flocculant is introduced into the tank 1 through the feed pipe 2, and through static sedimentation, the red mud flocculently settles at the bottom of the tank 1, while the supernatant can be discharged through the open overflow pipe 3.

[0024] like Figure 2 and 4 As shown, it also includes a straight pipe 4 with a bottom seal vertically installed at the bottom of the tank 1. A sludge discharge pipe 5 is connected through the side wall of the straight pipe 4 and inclined downwards. A propulsion assembly 6 for pushing sludge out is provided inside the straight pipe 4. The propulsion assembly 6 includes a motor 8 and a drive shaft 9. The motor 8 is installed at the bottom of the straight pipe 4, and the drive shaft 9 is rotatably mounted on the bottom wall of the straight pipe 4 and is shaft-connected to the motor 8. A screw conveyor blade 10 is fixed on the drive shaft 9. When cleaning the red mud deposited at the bottom, the motor 8 is started, which drives the drive shaft 9 to rotate. The drive shaft 9 drives the screw conveyor blade 10 to rotate, which can transport the red mud downwards and discharge it through the open sludge discharge pipe 5, which can effectively avoid the problem of sludge discharge blockage. Example 2

[0025] Based on Example 1, for example, to facilitate cleaning the inside of tank 1, such as... Figure 3 As shown, a rinsing assembly 7 for cleaning the tank 1 is installed on the top of the tank 1. The rinsing assembly 7 includes a spray pipe 11 and a connecting pipe 12. The spray pipe 11 is installed on the top wall of the tank 1, and high-pressure nozzles 13 are evenly distributed on the bottom wall of the spray pipe 11. The connecting pipe 12 is connected to the spray pipe 11 and penetrates the top wall of the tank 1. After the sludge is discharged, clean water is introduced into the connecting pipe 12, flows into the spray pipe 11, and is sprayed out through the high-pressure nozzles 13 to spray and clean the inner wall of the tank 1, so as to avoid residual red mud from corroding the tank 1. Example 3

[0026] like Figure 2 and 4As shown, a connecting block 14 is provided at the top of the drive shaft 9. Scrapers 15 are fixed to both sides of the connecting block 14 near the side wall of the tank body 1. A guide plate 16 is installed on the scraper 15. When cleaning red mud, the rotation of the drive shaft 9 can drive the connecting block 14 to rotate, and the connecting block 14 drives the scraper 15 to rotate, thereby effectively cleaning the red mud adhering to the inner wall of the tank body 1 and improving the cleaning effect. At the same time, the guide plate 16 can push the red mud downward to improve the mud discharge effect.

[0027] A transparent observation window 17 is provided on the side wall of the tank 1 to facilitate observation of the sedimentation inside the tank 1.

[0028] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A red mud settling device for alumina production, comprising a tank (1), wherein a feed pipe (2) is provided at the top of the tank (1), and an overflow pipe (3) is provided on the side wall of the tank (1); characterized in that: It also includes a straight pipe (4) with a bottom seal vertically installed at the bottom of the tank (1), a sludge discharge pipe (5) with a downward inclination connected through the side wall of the straight pipe (4), and a propulsion component (6) for pushing sludge out of the straight pipe (4). The top of the tank (1) is equipped with a rinsing assembly (7) for cleaning the tank (1).

2. The red mud settling device for alumina production according to claim 1, characterized in that: The propulsion assembly (6) includes a motor (8) and a drive shaft (9). The motor (8) is installed at the bottom of the straight pipe (4). The drive shaft (9) is vertically rotatably mounted on the bottom wall of the straight pipe (4) and is axially connected to the motor (8). Screw blades (10) are fixed on the drive shaft (9).

3. The red mud settling device for alumina production according to claim 1, characterized in that: The shower assembly (7) includes a spray pipe (11) and a connecting pipe (12). The spray pipe (11) is installed on the top wall of the tank (1). High-pressure nozzles (13) are evenly distributed on the bottom wall of the spray pipe (11). The connecting pipe (12) is connected to the spray pipe (11) and passes through the top wall of the tank (1).

4. The red mud settling device for alumina production according to claim 2, characterized in that: The top of the drive shaft (9) is provided with a connecting block (14), and scrapers (15) are fixed on both sides of the connecting block (14) near the side wall of the tank (1). A guide plate (16) is installed on the scraper (15).

5. A red mud settling device for alumina production according to any one of claims 1 to 4 characterised in that: The tank (1) has a transparent observation window (17) on its side wall.

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