Belt filter for recovering sulfate radicals and carbonate radicals from gallium production electrolysis tail liquid

Abstract

The utility model discloses a belt filter for recovering sulfate radical and carbonate radical from gallium-making electrolysis tail liquid, which comprises a base, a filter frame is fixedly arranged at the upper end of the base, a filter belt is mounted on the inner side surface of the filter frame through a conveying roller, a negative pressure suction device is fixedly mounted on the inner side surface of the filter frame below the filter belt, and the negative pressure suction device is connected with the base. And a precipitation mechanism is arranged on the surface of the base, and a large amount of sulfate radicals and carbonate radicals are precipitated through pretreatment of electrolysis tail liquid, so that filtering and recycling are convenient. According to the belt filter for recovering the sulfate radicals and the carbonate radicals from the gallium-making electrolysis tail liquid, a mode of carrying out alkali liquor neutralization pretreatment on the electrolysis tail liquid before the electrolysis tail liquid is paved on the filter belt is adopted, so that a large amount of the sulfate radicals and the carbonate radicals are separated out, then the sulfate radicals and the carbonate radicals are filtered through the belt filter, and the sulfate radicals and the carbonate radicals are recycled after being filtered; at the moment, the electrolysis tail liquid circularly enters the production system, and the purpose of ensuring the stable ion concentration in the gallium production system is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of gallium production electrolytic tail liquid treatment, in particular to a belt filter for recovering sulfate and carbonate from gallium production electrolytic tail liquid. Background Art

[0002] Gallium electrolytic tail liquid is a by-product produced in the process of producing gallium by electrolysis. In the process of producing gallium by electrolysis, inert electrodes are used for electrolysis, and the solute of the resulting "tail liquid" is mainly gallium compounds. This tail liquid can be recycled to improve economic benefits. However, the electrolytic tail liquid currently produces a large amount of sulfate and carbonate. Directly recycling the electrolytic tail liquid into the system will cause production instability. Utility Model Content

[0003] The utility model aims to provide a belt filter for recovering sulfate and carbonate from gallium electrolytic tail liquid, so as to solve the problem in the above background technology that the electrolytic tail liquid will produce a large amount of sulfate and carbonate, and the electrolytic tail liquid directly recycled into the system will cause production instability.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a belt filter for recovering sulfate and carbonate from gallium electrolysis tail liquid, comprising a base, a filter frame is fixedly arranged on the upper end of the base, and a filter belt is installed on the inner surface of the filter frame through a conveyor roller, a negative pressure suction device is fixedly installed on the inner surface of the filter frame below the filter belt, the upper end of the negative pressure suction device is in contact with the outer surface of the filter belt, and a gas-liquid separator is arranged at the liquid outlet end of the negative pressure suction device, a side plate is arranged at the connection between the base and the filter frame, one end of the liquid outlet end of the negative pressure suction device is fixedly connected to an input pipe, and the other end of the input pipe passes through the outer surface of the side plate and is fixedly connected to the base, a scraper is fixedly arranged on the side surface of one end of the filter frame, and a precipitation mechanism is arranged on the surface of the base, so that sulfate and carbonate are precipitated in large quantities by pre-treating the electrolysis tail liquid, which is convenient for filtering and recovery.

[0005] Preferably, the precipitation mechanism includes: a liquid receiving tank, which is arranged inside the end of the base connected to the input pipe, a concentrated alkali tank is arranged inside the end of the base away from the input pipe, and a switching motor is fixedly installed on the side surface of one end of the base where the concentrated alkali tank is located, a switching disk is fixedly connected to the upper end of the output shaft of the switching motor, and two solenoid valves are fixedly installed on the upper surface of the switching disk, the liquid inlet end of the solenoid valve is connected to an external joint, and the liquid outlet end of the solenoid valve is connected to an injection pipe, the side surface of one end of the base where the liquid receiving tank is located is penetrated by the output pipe, a liquid pump is fixedly installed on one side of the base, and the liquid outlet end of the liquid pump is connected to one end of a discharge pipe, and the other end of the discharge pipe is fixedly connected to the filter frame.

[0006] By adopting the above technical solution, the electrolytic tail liquid can be spread on the filter belt to realize negative pressure suction filtration.

[0007] Preferably, the precipitation mechanism also includes: a guide plate, which is rotatably mounted on one end side surface of the base, and a guide hole is opened on the outer surface of the guide plate, the liquid inlet end of the liquid pump is fixedly connected to two suction pipes, and one end of the suction pipe is fixedly connected to the suction plate, an adjusting motor is fixedly provided on the upper end outer surface of the suction plate, and one end of the output shaft of the adjusting motor is fixedly connected to an adjusting gear.

[0008] By adopting the above technical solution, the concentrated alkali tank can alternately discharge liquid to output the electrolyte after precipitation.

[0009] Preferably, the open ends of the two injection pipes are both downwardly facing the same concentrated alkali tank, one end of the output pipe penetrates the inner surface of the liquid receiving tank, and the inner surface of the liquid receiving tank is penetrated by the lower end of the input pipe, and the lower end of the discharge pipe is arranged vertically toward the upper surface of the filter belt.

[0010] By adopting the above technical solution, the discharge pipe can output the electrolytic tail liquid to the filter belt.

[0011] Preferably, a hole connected to the concentrated alkali tank is provided on the side surface of the base where the guide plate is located, and the guide hole is opposite to the hole on the side surface of the base. The outer surfaces on both sides of the guide plate are respectively fitted with the outer surfaces of the base and the liquid absorption plate, and a tooth block is fixedly provided on the outer surface of the guide plate, and the guide plate is meshed and connected with the adjusting gear through the tooth block.

[0012] By adopting the above technical solution, the guide plate can be driven to rotate.

[0013] Preferably, a liquid level monitoring mechanism is provided inside the concentrated alkali tank, and a balanced ratio of the electrolytic tail liquid and the alkali solution is achieved by monitoring the liquid level.

[0014] By adopting the above technical solution, sulfate and carbonate in the electrolytic tail liquid can be precipitated in large quantities.

[0015] Preferably, the liquid level monitoring mechanism includes: a monitoring column, a sliding floating plate is installed inside the monitoring column, a baffle is fixedly provided on the upper surface of the floating plate, and a clearance hole is opened at the lower end of the baffle, a clearance groove is opened on the upper surface of the monitoring column directly above the baffle, and an occlusion detection switch is fixedly provided on the upper end face of the monitoring column on one side of the clearance groove, and the outer surface of the monitoring column is hollowed out.

[0016] By adopting the above technical solution, the liquid level in the concentrated alkali tank can be monitored to ensure the reaction effect.

[0017] Compared with the prior art, the utility model has the following beneficial effects: the belt filter for recovering sulfate and carbonate from gallium electrolysis tail liquid:

[0018] 1. The electrolytic tail liquid is pre-treated by neutralizing the electrolytic tail liquid with alkali solution before spreading it on the filter belt, so that sulfate and carbonate will be precipitated in large quantities, and then filtered through a belt filter, and then recycled after filtration. At this time, the electrolytic tail liquid is circulated into the production system to ensure the stability of the ion concentration in the gallium production system;

[0019] 2. Furthermore, by real-time monitoring of the liquid level in the concentrated alkali tank, when the electrolytic tail liquid is injected into the concentrated alkali tank, the injection amount of the electrolytic tail liquid can be detected in conjunction with the setting of two concentrated alkali tanks to achieve a reasonable ratio of the electrolytic tail liquid and the alkali solution, thereby making the alkalinity of the electrolytic tail liquid meet the standard. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the three-dimensional structure of the connection between the filter frame and the scraper of the utility model;

[0022] Figure 3 It is a schematic diagram of the three-dimensional structure of the overall cutaway surface of the utility model;

[0023] Figure 4 This is a three-dimensional structural schematic diagram of the cross-section surface connecting the monitoring column and the floating plate of the utility model;

[0024] Figure 5 This is a schematic diagram of the three-dimensional structure of the connection between the guide plate and the adjustment gear of the utility model;

[0025] Figure 6 It is a three-dimensional structural schematic diagram of the cross-section surface connecting the liquid suction tube and the liquid suction plate of the utility model.

[0026] In the figure: 1. base; 2. filter frame; 3. filter belt; 4. negative pressure aspirator; 5. side panel; 6. input pipe; 7. scraper; 8. liquid receiving tank; 9. concentrated alkali tank; 10. switching motor; 11. switching disk; 12. solenoid valve; 13. external connector; 14. injection pipe; 15. output pipe; 16. liquid pump; 17. discharge pipe; 18. guide plate; 19. guide hole; 20. suction pipe; 21. suction plate; 22. adjustment motor; 23. adjustment gear; 24. monitoring column; 25. floating plate; 26. baffle; 27. clearance hole; 28. clearance slot; 29. ​​occlusion detection switch. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] See also Figure 1-Figure 6 The utility model provides a technical solution: a belt filter for recovering sulfate and carbonate from gallium electrolysis tail liquid.

[0029] Embodiment 1

[0030] The present embodiment discloses: a base 1, a filter frame 2 is fixedly arranged on the upper end of the base 1, and a filter belt 3 is installed on the inner surface of the filter frame 2 through a conveyor roller, a negative pressure suction device 4 is fixedly installed on the inner surface of the filter frame 2 below the filter belt 3, the upper end of the negative pressure suction device 4 is in contact with the outer surface of the filter belt 3, and a gas-liquid separator is arranged at the liquid outlet end of the negative pressure suction device 4, a side plate 5 is arranged at the connection between the base 1 and the filter frame 2, one end of the liquid outlet end of the negative pressure suction device 4 is fixedly connected to an input pipe 6, and the other end of the input pipe 6 passes through the outer surface of the side plate 5 and is fixedly connected to the base 1, a scraper 7 is fixedly arranged on the side surface of one end of the filter frame 2, and a precipitation mechanism is arranged on the surface of the base 1, and a large amount of sulfate and carbonate are precipitated by pre-treating the electrolytic tail liquid, which is convenient for filtration and recovery;

[0031] The precipitation mechanism includes: a liquid receiving tank 8, which is provided inside the end of the base 1 connected to the input pipe 6, and a concentrated alkali tank 9 is provided inside the end of the base 1 away from the input pipe 6, and a switching motor 10 is fixedly installed on the side surface of one end of the base 1 where the concentrated alkali tank 9 is located, and a switching disk 11 is fixedly connected to the upper end of the output shaft of the switching motor 10, and two solenoid valves 12 are fixedly installed on the upper surface of the switching disk 11, and the liquid inlet end of the solenoid valve 12 is connected to an external joint 13, and the liquid outlet end of the solenoid valve 12 is connected to an injection pipe 14, and the side surface of one end of the base 1 where the liquid receiving tank 8 is located is penetrated by an output pipe 15, and a liquid pump 16 is fixedly installed on one side of the base 1, and the liquid outlet end of the liquid pump 16 is connected to one end of a discharge pipe 17, and the other end of the discharge pipe 17 is fixedly connected to the filter frame 2;

[0032] The precipitation mechanism also includes: a guide plate 18, which is rotatably mounted on a side surface of one end of the base 1, and a guide hole 19 is opened on the outer surface of the guide plate 18, two liquid suction pipes 20 are fixedly connected to the liquid inlet end of the liquid pump 16, and one end of the liquid suction pipe 20 is fixedly connected to a liquid suction plate 21, and an adjustment motor 22 is fixedly arranged on the outer surface of the upper end of the liquid suction plate 21, and one end of the output shaft of the adjustment motor 22 is fixedly connected to an adjustment gear 23;

[0033] The open ends of the two injection pipes 14 are both downwardly directed toward the same concentrated alkali tank 9, one end of the output pipe 15 penetrates the inner surface of the liquid receiving tank 8, and the inner surface of the liquid receiving tank 8 is penetrated by the lower end of the input pipe 6, and the lower end of the discharge pipe 17 is arranged vertically toward the upper surface of the filter belt 3;

[0034] The side surface of the base 1 where the guide plate 18 is located is provided with a hole connected to the concentrated alkali tank 9, the guide hole 19 is directly opposite to the hole on the side surface of the base 1, the outer surfaces of both sides of the guide plate 18 are respectively in contact with the outer surfaces of the base 1 and the liquid suction plate 21, and the outer surface of the guide plate 18 is fixedly provided with a tooth block, and the guide plate 18 is meshed and connected with the adjustment gear 23 through the tooth block;

[0035] When filtering the electrolytic tail liquid, first connect it to the pipeline for conveying the electrolytic tail liquid and the alkali solution through the external joint 13, and then start the solenoid valve 12. At this time, the solenoid valve 12 connected to the electrolytic tail liquid pipeline is opened to inject the electrolytic tail liquid into the concentrated alkali tank 9 through the injection pipe 14 until the liquid level of the electrolytic tail liquid reaches a predetermined height. Then, the solenoid valve 12 connected to the alkali solution pipeline is opened to inject the alkali solution into the concentrated alkali tank 9 through the injection pipe 14, so that the electrolytic tail liquid reacts with the alkali solution to produce a large amount of precipitation. At this time, the regulating motor 22 at the upper end of the liquid suction plate 21 drives the guide plate 18 to rotate through the regulating gear 23, so that the guide hole 19 is opposite to the hole on the side surface of the base 1 where the concentrated alkali tank 9 where the reaction is completed is located. At this time, the liquid pump 16 is started to pump the electrolytic tail liquid and the precipitate together through the liquid suction pipe 20 and the guide hole 19. It is drawn outward and discharged through the discharge pipe 17 and spread on the upper surface of the filter belt 3 driven by the inner driving roller of the filter frame 2. At this time, the negative pressure suction device 4 is started to separate the electrolyte and the sediment that pass through the filter belt 3. The electrolyte is separated by the gas-liquid separator at the liquid outlet end of the negative pressure suction device 4 and discharged downward into the liquid receiving tank 8 through the input pipe 6 that penetrates one end of the side plate 5 and is finally output through the output pipe 15. The sediment accumulated on the filter belt 3 is scraped off by the scraper 7 and separated from the filter belt 3 after moving to the scraper 7. At the same time, when the liquid pump 16 is sucking, the switching motor 10 drives the switching disk 11 to rotate so that the injection pipe 14 is directed to the other concentrated alkali tank 9. The overall processing efficiency is improved by the method of outputting liquid from the concentrated alkali tank 9 on one side while reacting and precipitating in the concentrated alkali tank 9 on the other side.

[0036] Embodiment 2

[0037] This embodiment is based on the embodiment 1 and discloses that: a liquid level monitoring mechanism is provided inside the concentrated alkali tank 9, and a balanced ratio of the electrolytic tail liquid and the alkali liquid is achieved by monitoring the liquid level;

[0038] The liquid level monitoring mechanism includes: a monitoring column 24, a sliding floating plate 25 is installed inside the monitoring column 24, a baffle 26 is fixedly arranged on the upper surface of the floating plate 25, and a clearance hole 27 is opened at the lower end of the baffle 26, a clearance groove 28 is opened on the upper surface of the monitoring column 24 directly above the baffle 26, and an obstruction detection switch 29 is fixedly arranged on the upper end surface of the monitoring column 24 on one side of the clearance groove 28, and the outer surface of the monitoring column 24 is a hollow design;

[0039] When the electrolytic tail liquid and alkali solution are injected into the concentrated alkali tank 9, as the liquid level in the monitoring column 24 rises, the float plate 25 drives the baffle plate 26 to slide upward under the action of buoyancy until the upper end of the baffle plate 26 passes through the yield groove 28 to block the blocking detection switch 29. The blocking detection switch 29 is triggered to send out an electrical signal to drive the switching motor 10 and the adjusting motor 22 to change the connection state between the liquid pump 16 and the concentrated alkali tank 9 and the concentrated alkali tank 9 facing the injection pipe 14, until the yield hole 27 is opposite to the blocking detection switch 29 so that the blocking detection switch 29 is blocked. At this time, the blocking detection switch 29 sends an electrical signal to the solenoid valve 12 to stop the solenoid valve 12 from injecting alkali solution.

[0040] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A belt filter for recovering sulfate and carbonate from gallium electrolysis tail liquid, comprising a base (1), a filter frame (2) being fixedly arranged at the upper end of the base (1), and a filter belt (3) being installed on the inner surface of the filter frame (2) via a conveyor roller, a negative pressure suction device (4) being fixedly arranged on the inner surface of the filter frame (2) below the filter belt (3), the upper end of the negative pressure suction device (4) being in contact with the outer surface of the filter belt (3), and a gas-liquid separator being arranged at the liquid outlet end of the negative pressure suction device (4), a side plate (5) being arranged at the connection between the base (1) and the filter frame (2), one end of an input pipe (6) being fixedly connected to the liquid outlet end of the negative pressure suction device (4), and the other end of the input pipe (6) passing through the outer surface of the side plate (5) and being fixedly connected to the base (1), a scraper (7) being fixedly arranged on the side surface of one end of the filter frame (2), characterized in that: The surface of the base (1) is provided with a precipitation mechanism, which allows sulfate and carbonate to be precipitated in large quantities through pretreatment of the electrolytic tail liquid, thereby facilitating filtration and recovery.

2. The belt filter for recovering sulfate and carbonate from gallium electrolytic tail liquid according to claim 1, characterized in that: The precipitation mechanism comprises: a liquid receiving tank (8), the liquid receiving tank (8) being arranged inside one end of the base (1) connected to the input pipe (6), a concentrated alkali tank (9) being arranged inside one end of the base (1) away from the input pipe (6), and a switching motor (10) being fixedly mounted on the side surface of one end of the base (1) where the concentrated alkali tank (9) is located, a switching disk (11) being fixedly connected to the upper end of the output shaft of the switching motor (10), and two fixedly mounted on the upper surface of the switching disk (11) A solenoid valve (12), wherein the liquid inlet end of the solenoid valve (12) is connected to an external joint (13), and the liquid outlet end of the solenoid valve (12) is connected to an injection pipe (14); the side surface of one end of the base (1) where the liquid receiving tank (8) is located is penetrated by an output pipe (15); a liquid pump (16) is fixedly installed on one side of the base (1), and the liquid outlet end of the liquid pump (16) is connected to one end of a discharge pipe (17), and the other end of the discharge pipe (17) is fixedly connected to the filter frame (2).

3. The belt filter for recovering sulfate and carbonate from gallium electrolytic tail liquid according to claim 2, characterized in that: The precipitation mechanism further comprises: a guide plate (18), the guide plate (18) being rotatably mounted on a side surface of one end of the base (1), and a guide hole (19) being provided on the outer surface of the guide plate (18); two liquid suction pipes (20) being fixedly connected to the liquid inlet end of the liquid pump (16), and one end of the liquid suction pipe (20) being fixedly connected to the liquid suction plate (21); an adjustment motor (22) being fixedly arranged on the outer surface of the upper end of the liquid suction plate (21), and an adjustment gear (23) being fixedly connected to one end of the output shaft of the adjustment motor (22).

4. The belt filter for recovering sulfate and carbonate from gallium electrolytic tail liquid according to claim 2, characterized in that: The open ends of the two injection pipes (14) are both downwardly directed toward the same concentrated alkali tank (9); one end of the output pipe (15) penetrates the inner surface of the liquid receiving tank (8), and the inner surface of the liquid receiving tank (8) is penetrated by the lower end of the input pipe (6); and the lower end of the discharge pipe (17) is arranged vertically toward the upper surface of the filter belt (3).

5. The belt filter for recovering sulfate and carbonate from gallium electrolytic tail liquid according to claim 3, characterized in that: The side surface of the base (1) where the guide plate (18) is located is provided with a hole connected to the concentrated alkali tank (9); the guide hole (19) is directly opposite to the hole on the side surface of the base (1); the outer surfaces of both sides of the guide plate (18) are respectively in contact with the outer surfaces of the base (1) and the liquid suction plate (21); a tooth block is fixedly provided on the outer surface of the guide plate (18), and the guide plate (18) is meshedly connected with the adjustment gear (23) via the tooth block.

6. The belt filter for recovering sulfate and carbonate from gallium electrolytic tail liquid according to claim 2, characterized in that: A liquid level monitoring mechanism is provided inside the concentrated alkali tank (9), and a balanced ratio of the electrolytic tail liquid and the alkali solution is achieved by monitoring the liquid level.

7. The belt filter for recovering sulfate and carbonate from gallium electrolytic tail liquid according to claim 6, characterized in that: The liquid level monitoring mechanism comprises: a monitoring column (24), a sliding floating plate (25) is installed inside the monitoring column (24), a baffle (26) is fixedly arranged on the upper surface of the floating plate (25), and a clearance hole (27) is opened at the lower end of the baffle (26), a clearance groove (28) is opened on the upper surface of the monitoring column (24) directly above the baffle (26), and an obstruction detection switch (29) is fixedly arranged on the upper end surface of the monitoring column (24) on one side of the clearance groove (28), and the outer surface of the monitoring column (24) is hollowed out.

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