Ion exchange device
By introducing a stirring assembly, a filtration mechanism, and a compressed air mechanism into the ion exchange unit, the problem of clogging by suspended solids and organic matter was solved, achieving stable operation and efficient rinsing of the unit, and improving the service life of the resin and the gallium extraction efficiency.
Patent Information
- Application Number
- CN202423214533.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-25
- Publication Date
- 2026-02-17
- Estimated Expiration
- 2034-12-25
AI Technical Summary
When traditional ion exchange devices process seed mother liquor, the accumulation of suspended solids and organic matter clogs the screen, leading to increased pump head and flow resistance, which affects the stability and efficiency of the device operation.
An ion exchange device was designed, comprising an adsorption tower, a stirring assembly, a filtration mechanism, and a compressed air mechanism. Gravity separation and the stirring assembly prevent the deposition of suspended matter, while a one-way valve and an atomizer prevent organic matter from clogging the device. Combined with countercurrent rinsing and a dual-path compressed air design, the device ensures the loosening and effective separation of the resin.
It effectively prevents screen clogging, reduces pump head and flow resistance, improves rinsing efficiency, extends resin lifespan, and ensures long-term stable operation of the device, thus providing a guarantee for the efficient extraction of metallic gallium.
Smart Images
Figure CN223915428U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the technical field of hydrometallurgy, and particularly relates to an ion exchange device. BACKGROUND
[0002] The ion exchange technology of resin adsorption method is a technology for separating components to be extracted from other components by using ion exchangers (resin) to exchange ions in a solution, and is one of important liquid-solid separation means in the hydrometallurgical process.
[0003] Gallium is mainly applied in the field of high-tech science and technology. Since the melting point of gallium is low (29.98 DEG C) and the boiling point is extremely high (2403 DEG C), the temperature range of the metal in liquid state is large, the vapor pressure is low, and the metal can absorb neutrons to control the reaction speed, so the metal is widely used as a heat exchange agent in the atomic energy industry. More than 90% of the metal gallium in the world is associated with bauxite, and at present, the acquisition of gallium mainly relies on the ion exchange technology of resin adsorption method to recover and extract the gallium from the seed separation mother liquor (i.e. the mother liquor for producing alumina) generated in the Bayer process for producing alumina.
[0004] In the process of producing alumina, the seed separation mother liquor generated in the Bayer process contains high-density aluminum hydroxide floaters and organic matters. Even after purification treatment, the content still exceeds the standard required by the resin adsorption process, which leads to the problems of high pressure head of the delivery pump, pressure build-up of the device and increased flow resistance after the traditional ion exchange device is operated for a period of time. The main reason is that the floaters and organic matters are prone to accumulate and sink in the adsorption tower, and accumulate and block at the screen of the atomization device, which causes the difficulty in discharging the mother liquor. UTILIZATIONAL CONTENT
[0005] The utility model aims at providing an ion exchange device to solve the problems of high pressure head of the delivery pump and increased flow resistance caused by the accumulation and blockage of the floaters and organic matters in the seed separation mother liquor in the traditional ion exchange device.
[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:
[0007] An ion exchange device comprises an adsorption tower upper head, a cylinder, an adsorption tower lower head and a foot stand which are sequentially arranged from top to bottom, are fixedly arranged and communicated with each other, the lower surface of the adsorption tower lower head is fixedly arranged and communicated with a first liquid inlet pipe and a liquid discharge pipe, the upper side wall of the cylinder is fixedly arranged and communicated with a resin inlet pipe, the upper surface of the adsorption tower upper head is fixedly arranged and communicated with a second liquid inlet pipe and an overflow pipe, the top surface of the adsorption tower upper head is provided with a stirring assembly, the inner bottom surface of the adsorption tower upper head is provided with a second filtering mechanism, the inner top surface of the adsorption tower lower head is provided with a first filtering mechanism, and a compressed air mechanism is arranged between the adsorption tower upper head and the adsorption tower lower head.
[0008] The second filtering mechanism comprises a partition plate fixedly arranged on the inner wall of the upper head of the adsorption tower, a plurality of conical screens are fixedly arranged on the partition plate, a one-way valve is fixedly communicated with the top of the screen, and an atomizer is fixedly arranged at the connection position of the one-way valve and the screen.
[0009] Preferably, the stirring assembly comprises a stirring shaft rotatably arranged at the center of the upper head of the adsorption tower, the bottom end of the stirring shaft penetrates through the partition plate and extends above the first filtering mechanism, a spiral stirring blade is fixedly arranged on the outer wall of the inner barrel of the stirring shaft, a mounting bracket is fixedly arranged on the outer wall of the top surface of the upper head of the adsorption tower, a driving motor is fixedly arranged on the mounting bracket, and the output shaft of the driving motor is fixedly arranged on the top end of the stirring shaft.
[0010] Preferably, the compressed air mechanism comprises a first air inlet pipe and a second air inlet pipe, the first air inlet pipe is fixedly arranged and communicated on the lower surface of the lower head of the adsorption tower, and the second air inlet pipe is fixedly arranged and communicated on the upper surface of the upper head of the adsorption tower.
[0011] Preferably, the first filtering mechanism comprises a support frame fixedly arranged on the inner wall of the top surface of the lower head of the adsorption tower, and a plurality of fan-shaped filter plates are fixedly arranged on the top surface of the support frame.
[0012] Preferably, a manhole is arranged below the side wall of the barrel, and a sealing frame is fixedly arranged on the manhole.
[0013] Preferably, an eyepiece observation window is fixedly arranged at the middle portion of the side wall of the barrel.
[0014] Compared with the prior art, the beneficial effects of the present application are as follows:
[0015] (1) In the rinsing process, the mother liquor enters from the lower part of the device and is discharged from the top. Since the density of the suspended matter (such as aluminum hydroxide particles) is large, it will sink under the action of gravity, while the organic matter will float up. The resin in the dispersed state is easily discharged through the one-way discharge pipe, reducing the accumulation of suspended matter and organic matter in the device, effectively preventing the screen from being blocked, not only reducing the delivery pump pressure head and flow resistance, but also improving the rinsing efficiency, reducing the rinsing water volume and time, and ensuring the long-term stable operation of the ion exchange device, providing reliable guarantee for the efficient extraction of gallium.
[0016] (2) by stirring assembly intermittent stirring resin, effectively avoid the phenomenon of the consolidation of resin layer, maintain the resin flow and uniform distribution, thereby improving the adsorption efficiency and the service life of the resin, while the compressed air mechanism of double circuit design, on the one hand through the bottom into the device reverse blowing resin layer, so that it is in loose state before the spiral stirring starts, avoid the problem of mechanical stirring cannot start; on the other hand, the compressed air into the top when the resin liquid, by piston type whole propulsion liquid down pressure, promote the effective separation of solution and resin. BRIEF DESCRIPTION OF DRAWINGS
[0017] Figure 1 is the perspective view of the utility model;
[0018] Figure 2 is the sectional view of the utility model;
[0019] Figure 3 is Figure 2 structure enlarged view of A in the middle;
[0020] Figure 4 is the perspective view of the second filter mechanism and stirring assembly of the utility model;
[0021] Figure 5 is the perspective view of the first filter mechanism of the utility model;
[0022] In the drawing: 1, adsorption tower upper head; 2, second liquid inlet pipe; 3, overflow pipe; 4, second air inlet pipe; 5, partition; 6, screen; 7, atomizer; 8, check valve; 9, stirring shaft; 10, stirring blade; 11, drive motor; 12, mounting frame; 13, cylinder; 14, resin inlet pipe; 15, sealing frame; 16, eyepiece observation window; 17, adsorption tower adsorption tower lower head; 18, filter plate; 19, support frame; 20, first liquid inlet pipe; 21, liquid outlet pipe; 22, first air inlet pipe; 23, foot stand. DETAILED DESCRIPTION
[0023] The technical solutions in the embodiments of the utility model will be described clearly and completely below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.
[0024] In the description of the utility model, need understanding is, the term "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "internal", "external" and so on the orientation or positional relationship indicated is based on the orientation or positional relationship shown in the drawing, just is for the convenience of describing the utility model and simplifying the description, and not indicate or imply the device or element indicated must have a particular orientation, with a particular orientation configuration and operation, therefore can not be understood as the restriction of the utility model. In addition, the term "first", "second" and so on are just for the purpose of description, and can not be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features limited by "first", "second" and so on can explicitly or implicitly include one or more features. In the description of the utility model, unless otherwise specified, the meaning of "multiple" is two or more.
[0025] Embodiment one:
[0026] Please refer to Figures 1-5 As shown in the figure, an ion exchange device, comprising:
[0027] The adsorption tower upper head 1, the cylinder 13, the adsorption tower lower head 17 and the foot stand 23 are sequentially arranged from top to bottom, are fixedly arranged and communicated with each other, the first liquid inlet pipe 20 and the liquid outlet pipe 21 are fixedly arranged and communicated with the lower surface of the adsorption tower lower head 17, the resin inlet pipe 14 is fixedly arranged and communicated with the upper side wall of the cylinder 13, the second liquid inlet pipe 2 and the overflow pipe 3 are fixedly arranged and communicated with the upper surface of the adsorption tower upper head 1, the stirring assembly is arranged on the top surface of the adsorption tower upper head 1, the second filter mechanism is arranged in the bottom of the adsorption tower upper head 1, the first filter mechanism is arranged in the top of the adsorption tower lower head 17, and the compressed air mechanism is arranged between the adsorption tower upper head 1 and the adsorption tower lower head 17.
[0028] From Figure 3 And Figure 4 It can be seen that the second filter mechanism comprises a partition plate 5 fixedly arranged on the inner wall of the adsorption tower upper head 1, a plurality of conical screen meshes 6 fixedly arranged on the partition plate 5, a one-way valve 8 fixedly communicated with the top of the screen mesh 6, and an atomizer 7 fixedly arranged at the connection between the one-way valve and the screen mesh 6.
[0029] As can be seen from the above, when extracting gallium ions, resin is first injected into the cylinder 13 through the resin inlet pipe 14. Then, the seed mother liquor is injected into the lower head 17 of the adsorption tower through the first inlet pipe 20 at the bottom of the device. Through the first filtration mechanism, larger impurities in the seed mother liquor are intercepted in the lower head 17 of the adsorption tower. The seed mother liquor after preliminary filtration passes through the resin layer from bottom to top. During this process, gallium ions are selectively adsorbed by the resin. The inlet flow rate is adjusted, and the resin is controlled to sink normally according to the buoyancy principle. The adsorbed seed mother liquor continues to flow upward and flows into the upper head 1 of the adsorption tower through the one-way valve 8. When the resin layer reaches the adsorption saturation state, the inlet flow of the seed mother liquor is stopped and discharged through the overflow pipe 3. The resin is intercepted in the cylinder 13. The resin after adsorption saturation needs to be desorbed. At this time, a desorbent solution is injected into the device through the first inlet pipe 20. The solution begins to flow upward through the resin layer, reacting with gallium ions on the resin. This causes the gallium ions to detach from the resin and dissolve in the desorbent, forming a enriched solution containing a high concentration of gallium ions. The enriched solution continues to flow upward, flowing through the one-way valve 8 into the upper head 1 of the adsorption tower, and finally being discharged through the overflow pipe 3. Due to the effective interception of the conical screen 6, impurities in the mother liquor are intercepted in the cylinder 13 and mixed with the resin. At this time, rinsing water is injected into the upper head 1 of the adsorption tower through the second inlet pipe 2. After being processed by multiple atomizers 7, the rinsing water is evenly dispersed and injected into the cylinder 13. The conical screen 6 can effectively prevent impurities from clogging the atomizers 7. Because the rinsing water has a low density, it will naturally flow downward, carrying and washing away impurities on the resin surface and in the gaps. The stirring component helps the rinsing water and resin to mix thoroughly and evenly. As the rinsing water flows, suspended matter and organic matter are gradually carried out of the resin layer. Thanks to the counter-current rinsing design, with the help of the compressed air mechanism, low-density rinsing water is discharged from the top through the top one-way valve 8, while high-density tail liquid is discharged from the bottom drain pipe 21. This conforms to the law of gravity and quickly replaces the mother liquor, suspended matter, and organic matter in the resin.
[0030] Specifically, regarding the above, please refer to... Figure 5 As shown, the first filtration mechanism includes a support frame 19 fixedly installed on the inner wall of the top surface of the adsorption tower lower end cap 17, and multiple fan-shaped filter plates 18 spliced together are fixedly installed on the top surface of the support frame 19.
[0031] As can be seen from the above, these filter plates 18 not only intercept large particulate impurities during rinsing, ensuring that the pre-purified liquid passes evenly through the resin layer, but also effectively prevent the resin from flowing out with the rinsing water, maintain the integrity of the resin layer, and improve the ion exchange efficiency.
[0032] Specifically, regarding the above, please refer to... Figure 1 As shown, a manhole is provided on the lower side wall of the cylinder 13, and a sealing frame 15 is fixedly installed on the manhole.
[0033] As can be seen from the above, by opening the sealing plate on the sealing frame 15, it is convenient for operators to enter and exit through the manhole and to inspect the internal passage of the ion exchange device, ensuring that the installation, maintenance and resin loading and unloading operations of the equipment are convenient and safe.
[0034] Specifically, regarding the above, please refer to... Figure 1 As shown, an eyepiece observation window 16 is fixedly installed in the middle of the side wall of the cylinder 13.
[0035] As can be seen from the above, the eyepiece observation window 16 provides a window for direct observation of the internal conditions of the ion exchange device, which is convenient for monitoring the operation process and checking the internal status.
[0036] Example 2:
[0037] refer to Figure 2 and Figure 3 As shown, the stirring assembly includes a stirring shaft 9 rotatably mounted at the center of the upper end cap 1 of the adsorption tower. The bottom end of the stirring shaft 9 passes through the partition 5 and extends above the first filtration mechanism. A spiral stirring blade 10 is fixedly mounted on the outer wall inside the cylinder 13. A mounting frame 12 is fixedly mounted on the outer wall of the top surface of the upper end cap 1 of the adsorption tower. A drive motor 11 is fixedly mounted on the mounting frame 12. The output shaft of the drive motor 11 is fixedly mounted on the top end of the stirring shaft 9.
[0038] As can be seen from the above, during operation, the drive motor 11 intermittently drives the stirring shaft 9 to rotate, and the spiral stirring blade 10 rotates accordingly, uniformly stirring the resin layer, preventing resin caking, ensuring that the rinsing liquid and resin are in full contact, improving ion exchange efficiency and cleaning effect. It should be noted that the drive motor 11 is a forward and reverse servo motor, which is existing technology and will not be elaborated here.
[0039] Preferred, Reference Figure 2 As shown, the compressed air mechanism includes a first air inlet pipe 22 and a second air inlet pipe 4. The first air inlet pipe 22 is fixedly installed and connected to the lower surface of the lower end cap 17 of the adsorption tower, and the second air inlet pipe 4 is fixedly installed and connected to the upper surface of the upper end cap 1 of the adsorption tower.
[0040] As can be seen from the above, the first air inlet pipe 22 introduces compressed air from the bottom to loosen the resin layer and prevent the resin from caking when the mechanical agitator is started; the second air inlet pipe 4 introduces compressed air from the top, which acts as a propulsion force to help the rinsing liquid be pressed down in a piston-like manner during liquid discharge, ensuring the separation of solution and resin. This design ensures the uniform dispersion of the resin layer and efficient gas-liquid separation, improving the stability and efficiency of the overall operation.
[0041] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. An ion exchange device, characterized in that, include: The adsorption tower upper end cap (1), cylinder (13), adsorption tower lower end cap (17) and bracket (23) are arranged sequentially from top to bottom. They are fixedly arranged and connected to each other. The lower surface of the adsorption tower lower end cap (17) is fixedly arranged and connected to the first liquid inlet pipe (20) and the liquid outlet pipe (21). The upper side wall of the cylinder (13) is fixedly arranged and connected to the resin inlet pipe (14). The upper surface of the adsorption tower upper end cap (1) is fixedly arranged and connected to the second liquid inlet pipe (2) and the overflow pipe (3). The top surface of the adsorption tower upper end cap (1) is provided with a stirring assembly, and the bottom surface is provided with a second filtration mechanism. The top surface of the adsorption tower lower end cap (17) is provided with a first filtration mechanism. A compressed air mechanism is provided between the adsorption tower upper end cap (1) and the adsorption tower lower end cap (17). The second filtration mechanism includes a partition (5) fixedly installed on the inner wall of the adsorption tower upper end cap (1). The partition (5) is fixedly provided with a plurality of conical screens (6). The top of the screens (6) is fixedly connected to a one-way valve (8). An atomizer (7) is fixedly installed at the connection between the one-way valve (8) and the screens (6).
2. The ion exchange device according to claim 1, characterized in that: The stirring assembly includes a stirring shaft (9) rotatably mounted at the center of the adsorption tower upper end cap (1). The bottom end of the stirring shaft (9) passes through the partition plate (5) and extends above the first filtration mechanism. A spiral stirring blade (10) is fixedly mounted on the outer wall inside the cylinder (13). A mounting frame (12) is fixedly mounted on the outer wall of the top surface of the adsorption tower upper end cap (1). A drive motor (11) is fixedly mounted on the mounting frame (12). The output shaft of the drive motor (11) is fixedly mounted on the top end of the stirring shaft (9).
3. The ion exchange device according to claim 1, characterized in that: The compressed air mechanism includes a first air inlet pipe (22) and a second air inlet pipe (4). The first air inlet pipe (22) is fixedly installed and connected to the lower surface of the adsorption tower lower end cap (17), and the second air inlet pipe (4) is fixedly installed and connected to the upper surface of the adsorption tower upper end cap (1).
4. An ion exchange device according to claim 1, characterized in that: The first filtration mechanism includes a support frame (19) fixedly installed on the inner wall of the top surface of the adsorption tower lower end cap (17), and multiple fan-shaped filter plates (18) spliced together are fixedly installed on the top surface of the support frame (19).
5. An ion exchange device according to claim 1, characterized in that: A manhole is provided on the lower side wall of the cylinder (13), and a sealing frame (15) is fixedly installed on the manhole.
6. An ion exchange device according to claim 1, characterized in that: An eyepiece observation window (16) is fixedly provided in the middle of the side wall of the cylinder (13).