Alumina preparation circulating mother liquor raw solution preparation device

Abstract

This utility model relates to the field of building structural wall column base connection, and proposes a circulating mother liquor preparation device for alumina preparation. The device includes a mother liquor tank, a control and adjustment component fixed to the side of the mother liquor tank, and a flash tank sealed to the other side of the mother liquor tank. A recovery component is fixed to the top of the flash tank. The control and adjustment component includes a measuring tube, a support plate fixed to the top of the measuring tube, a first motor fixed to the side of the support plate, a driving helical gear fixed to the output end of the first motor, and a driven helical gear meshing with the bottom of the driving helical gear. This technical solution solves the problem in existing circulating mother liquor preparation devices for alumina preparation where, due to the large amount of seed mother liquor entering the mother liquor tank, a longer time is required to adjust the required concentration of mother liquor, leading to reduced production efficiency and increased energy consumption.

Description

Technical Field

[0001] This utility model relates to the field of alumina preparation technology, specifically to a circulating mother liquor preparation device for alumina preparation. Background Technology

[0002] The Bayer process is currently the world's main method for producing alumina. Its basic principle involves dissolving alumina in bauxite using sodium hydroxide solution to form sodium aluminate solution. Aluminum hydroxide is then precipitated through steps such as seed crystal decomposition, and finally, alumina is obtained through calcination. In the Bayer process of alumina production, the mother liquor is a crucial intermediate medium. This mother liquor is continuously recycled throughout the process. It not only participates in the alumina leaching process, but its composition also changes due to factors such as variations in bauxite quality and fluctuations in the production process. Without proper preparation of the mother liquor, these fluctuations can affect the stability of alumina production and product quality.

[0003] When using existing circulating mother liquor preparation equipment for alumina production, the large amount of seed mother liquor entering the raw liquor tank requires a longer time to adjust the required concentration of mother liquor, which not only reduces production efficiency but also increases energy consumption. Utility Model Content

[0004] This invention proposes a circulating mother liquor preparation device for alumina preparation, which solves the problem in related technologies where, due to the large amount of seed mother liquor entering the raw liquor tank, a longer time is needed to adjust the required concentration of mother liquor, which not only reduces production efficiency but also increases energy consumption.

[0005] The technical solution of this utility model is as follows: a circulating mother liquor preparation device for alumina preparation, including a raw liquor tank, a control and adjustment component fixed on the side of the raw liquor tank, a flash tank sealed to the other side of the raw liquor tank, and a recovery component fixed on the top of the flash tank;

[0006] The control and adjustment assembly includes a measuring tube, a support plate fixed to the top of the measuring tube, a first motor fixed to the side of the support plate, a driving helical gear fixed to the output end of the first motor, a driven helical gear meshing with the bottom of the driving helical gear, a connecting gear fixed to one end of the driven helical gear, an adjusting gear meshing with the bottom of the connecting gear, a connecting rod fixed to the inner side of the adjusting gear, an adjusting plate rotatably connected to the other end of the connecting rod, and a positioning rod fixed to the other side of the adjusting plate.

[0007] Preferably, the measuring tube is sealed to the side of a conveying tube, the inner wall of the conveying tube is provided with a shrinkage groove, the inner wall of the shrinkage groove is provided with a sliding groove, the positioning rod slides in the sliding groove, and the adjusting plate is slidably connected in the shrinkage groove.

[0008] Preferably, the connection between the adjusting gear and the conveying pipe is in a sealed state.

[0009] Preferably, the adjusting plates are provided in four sets, and the four sets of adjusting plates are symmetrically distributed in the shrinkage groove.

[0010] Preferably, a differential pressure sensor is fixed to the inner wall of the measuring tube, and a thin film is fixed to the outer surface of the differential pressure sensor.

[0011] Preferably, the recycling assembly includes a recycling bin, a second motor is fixed to the top of the recycling bin, a rotating shaft is fixed to the output end of the second motor, a fan blade is installed on the rotating shaft, and a conveying port is opened on the outside of the recycling bin.

[0012] Preferably, the fan blade is an arc-shaped inclined plate, and the fan blade is provided in six groups, with the six groups of fan blades evenly distributed on the rotating shaft.

[0013] Preferably, a support column is fixed to the bottom of the recycling bin, and the support column is fixed to the flash tank.

[0014] The working principle and beneficial effects of this utility model are as follows:

[0015] 1. In this utility model, by setting a control and adjustment component, the flow rate of the seed mother liquor entering the raw liquid tank can be controlled, thereby allowing an appropriate amount of seed mother liquor to be delivered to the raw liquid tank according to the actual situation. This not only improves the time for adjusting the concentration of the seed mother liquor, but also reduces the energy consumption when adjusting the concentration of the seed mother liquor, thus achieving the effect of improving the production efficiency when adjusting the concentration of the seed mother liquor and reducing the energy consumption when adjusting the concentration of the seed mother liquor. Attached Figure Description

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

[0017] Figure 1 This is a schematic diagram of the external structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the external structure of the control and adjustment component of this utility model;

[0019] Figure 3 This is a cross-sectional view of the internal structure of the control and adjustment component of this utility model;

[0020] Figure 4 for Figure 3 Enlarged schematic diagram of the structure at point A in the middle;

[0021] Figure 5 This is a cross-sectional view of the internal structure of the recycling component of this utility model.

[0022] In the diagram: 1. Raw material tank; 2. Control and adjustment assembly; 21. Measuring tube; 22. Support plate; 23. First motor; 24. Driving helical gear; 25. Driven helical gear; 26. Connecting gear; 27. Adjusting gear; 28. Connecting rod; 29. ​​Adjusting plate; 210. Positioning rod; 211. Conveying pipe; 212. Shrinkage tank; 213. Slide chute; 214. Differential pressure sensor; 3. Recovery assembly; 31. Recovery box; 32. Second motor; 33. Rotating shaft; 34. Fan blade; 35. Conveying port; 36. Support column; 4. Flash tank. Detailed Implementation

[0023] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.

[0024] Example 1

[0025] like Figures 1-3 As shown, this embodiment proposes a circulating mother liquor preparation device for alumina preparation, including a raw liquor tank 1, a control and adjustment component 2 fixed on the side of the raw liquor tank 1, a flash tank 4 sealed to the other side of the raw liquor tank 1, and a recovery component 3 fixed to the top of the flash tank 4.

[0026] The control and adjustment assembly 2 includes a measuring tube 21, a support plate 22 fixed to the top of the measuring tube 21, a first motor 23 fixed to the side of the support plate 22, an active helical gear 24 fixed to the output end of the first motor 23, a driven helical gear 25 meshing with the bottom of the active helical gear 24, a connecting gear 26 fixed to one end of the driven helical gear 25, an adjusting gear 27 meshing with the bottom of the connecting gear 26, a connecting rod 28 fixed to the inner side of the adjusting gear 27, an adjusting plate 29 rotatably connected to the other end of the connecting rod 28, and a positioning rod 210 fixed to the other side of the adjusting plate 29.

[0027] The measuring tube 21 is sealed to the side with a conveying tube 211. The inner wall of the conveying tube 211 is provided with a shrinkage groove 212 and the inner wall of the shrinkage groove 212 is provided with a sliding groove 213. The positioning rod 210 slides in the sliding groove 213. The adjusting plate 29 is slidably connected in the shrinkage groove 212. The shrinkage groove 212 is mainly used for the adjusting plate 29 to slide and shrink when it expands or shrinks, so as to achieve the shrinkage effect of the adjusting plate 29.

[0028] The connection between the adjusting gear 27 and the conveying pipe 211 is in a sealed state, so that when the adjusting gear 27 rotates, the inside of the conveying pipe 211 is sealed.

[0029] There are four sets of regulating plates 29, which are symmetrically distributed in the shrinkage trough 212, so that the flow rate can be precisely controlled when adjusting the flow rate.

[0030] A differential pressure sensor 214 is fixed to the inner wall of the measuring tube 21. A thin film is fixed to the outer surface of the differential pressure sensor 214. The differential pressure sensor 214 is an AC-DP3051 type sensor. When the mother liquor passes through the differential pressure sensor 214, the thin film on its surface is squeezed and deformed, thereby causing the pressure difference of the thin film to change. The differential pressure sensor 214 calculates the change and obtains accurate flow data.

[0031] In this embodiment, when the mother liquor passes through the measuring tube 21, the thin film on the surface of the differential pressure sensor 214 is squeezed, causing the film to bend. The pressure difference on the film is calculated by the device inside the differential pressure sensor 214 to obtain accurate real-time liquid flow data. The differential pressure sensor 214 controls the first motor 23, which drives the active helical gear 24 to rotate. The active helical gear 24 drives the connecting gear 26 at the other end of the driven helical gear 25 to rotate, thereby making the connecting gear 26 mesh with the adjusting gear 27. The connecting rod 28 inside the adjusting gear 27 drives the adjusting plate 29 to rotate, thereby making the adjusting plate 29 slide in the slide groove 213 through the positioning rod 210. The adjusting plate 29 slides to contract or expand in the contraction groove 212, thereby achieving the effect of accurately controlling the liquid flow.

[0032] Example 2

[0033] like Figures 4-5 As shown, based on the same concept as Embodiment 1 above, this embodiment also proposes a recycling component 3 including a recycling box 31, a second motor 32 fixed on the top of the recycling box 31, a rotating shaft 33 fixed on the output end of the second motor 32, a fan blade 34 installed on the rotating shaft 33, and a conveying port 35 opened on the outside of the recycling box 31.

[0034] The fan blade 34 is an arc-shaped inclined plate, and there are six sets of fan blades 34. The six sets of fan blades 34 are evenly distributed on the rotating shaft 33. The arc-shaped inclined plate can improve the degree of steam recovery.

[0035] A support column 36 is fixed to the bottom of the recycling bin 31. The support column 36 is fixed to the flash tank 4 and provides support for the recycling bin 31.

[0036] In this embodiment, when the mother liquor is flash-distilled a second time inside the flash tank 4, the liquid balance maintenance technology of the low-pressure secondary flash evaporation system is used to introduce some of the high-temperature materials from the fourth effect into the seventh effect through the branch pipe, so as to achieve efficient utilization of the high vacuum of the seventh effect, to flash-distill some of the high-temperature materials a second time, to increase the concentration of the mother liquor, and at the same time increase the feed rate of the evaporator unit, to further balance the liquid volume of the system, and to realize the in-station circulation of mother liquor raw material distribution. The steam generated during the flash evaporation process drives the second motor 32 to drive the rotating shaft 33 to rotate, thereby causing the fan blades 34 to rotate and recover the steam inside the flash tank 4. The recovered steam is stored inside the flash tank 4. When it is needed, the steam is transported to the conveying port 35 by the rotation of the fan blades 34. At the same time, the conveying port 35 is automatically opened by the valve, so that the steam can be reused.

[0037] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A circulating mother liquor preparation device for alumina preparation, characterized in that... Includes a raw liquid tank (1), a control and adjustment component (2) is fixed on the side of the raw liquid tank (1), a flash tank (4) is sealed to the other side of the raw liquid tank (1), and a recovery component (3) is fixed to the top of the flash tank (4). The control and adjustment assembly (2) includes a measuring tube (21), a support plate (22) is fixed to the top of the measuring tube (21), a first motor (23) is fixed to the side of the support plate (22), an active helical gear (24) is fixed to the output end of the first motor (23), a driven helical gear (25) is meshed with the bottom of the active helical gear (24), a connecting gear (26) is fixed to one end of the driven helical gear (25), an adjusting gear (27) is meshed with the bottom of the connecting gear (26), a connecting rod (28) is fixed to the inside of the adjusting gear (27), an adjusting plate (29) is rotatably connected to the other end of the connecting rod (28), and a positioning rod (210) is fixed to the other side of the adjusting plate (29).

2. The circulating mother liquor preparation device for alumina preparation according to claim 1, characterized in that, The measuring tube (21) is sealed to the side with a conveying tube (211). The inner wall of the conveying tube (211) is provided with a shrinkage groove (212). The inner wall of the shrinkage groove (212) is provided with a sliding groove (213). The positioning rod (210) slides in the sliding groove (213). The adjusting plate (29) is slidably connected in the shrinkage groove (212).

3. The circulating mother liquor preparation device for alumina preparation according to claim 1, characterized in that, The connection between the adjusting gear (27) and the conveying pipe (211) is sealed.

4. The circulating mother liquor preparation device for alumina preparation according to claim 2, characterized in that, The adjustment plate (29) is provided in four sets, and the four sets of adjustment plates (29) are symmetrically distributed in the shrinkage groove (212).

5. The circulating mother liquor preparation device for alumina preparation according to claim 1, characterized in that, A differential pressure sensor (214) is fixed on the inner wall of the measuring tube (21), and a thin film is fixed on the outer surface of the differential pressure sensor (214).

6. The circulating mother liquor preparation device for alumina preparation according to claim 1, characterized in that, The recycling component (3) includes a recycling bin (31), a second motor (32) is fixed on the top of the recycling bin (31), a rotating shaft (33) is fixed at the output end of the second motor (32), a fan blade (34) is installed on the rotating shaft (33), and a conveying port (35) is opened on the outside of the recycling bin (31).

7. The circulating mother liquor preparation device for alumina preparation according to claim 6, characterized in that, The fan blade (34) is an arc-shaped inclined plate. There are six sets of fan blades (34), and the six sets of fan blades (34) are evenly distributed on the rotating shaft (33).

8. The circulating mother liquor preparation device for alumina preparation according to claim 6, characterized in that, The bottom of the recycling bin (31) is fixed with a support column (36), which is fixed on the flash tank (4).

Images