An enrichment solution extraction system and method

Abstract

This application relates to the field of waste recycling technology, specifically disclosing an enrichment liquid extraction system and method. The system includes: a mother liquor tank, a return liquid tank, a filter press, a reaction vessel, a resin tank, and a controller. The mother liquor tank is connected to the filter press. The reaction vessel is equipped with: a reaction liquid port, an auxiliary material port, a resin port, and a discharge port. The reaction liquid port is connected to the filter press. The auxiliary material port valve is connected to the cleaning liquid port, the desorption liquid port, and the neutralization liquid port. The resin port is connected to the resin tank. The discharge port is connected to the waste liquid port, the enrichment liquid port, and the return liquid tank via valves. Valves are provided at the reaction liquid port, the auxiliary material port, and the discharge port. By controlling the opening and closing of each valve through the controller, the feeding, addition of auxiliary materials, and liquid discharge of the reaction vessel can be controlled, realizing automatic control of material transfer during the enrichment liquid extraction process. This avoids the safety and pollution risks associated with manual feeding and material transfer, and effectively reduces the labor intensity of workers while improving production efficiency.

Description

Technical Field

[0001] This application relates to the field of waste recycling technology, and in particular to an enrichment liquid extraction system and method. Background Technology

[0002] In existing production methods for extracting gallium-enriched solutions from aluminum hydroxide mother liquor, material transfer is generally done manually. Since a large amount of acid and alkali solutions are used in the production of gallium-enriched solutions, manual material transfer poses certain safety risks. Furthermore, manual material transfer is labor-intensive, inefficient, and can easily lead to material and environmental contamination if not handled properly. Summary of the Invention

[0003] In view of this, the purpose of this application is to provide an enrichment solution extraction system and method to solve the problems of safety risks, pollution risks, high labor intensity and low production efficiency in the existing gallium enrichment solution production process.

[0004] To achieve the above-mentioned technical objectives, the first aspect of this application provides an enrichment liquid extraction system, comprising: a mother liquor tank, a return liquid tank, a filter press, a reaction vessel, a resin tank, and a controller;

[0005] The outlet of the mother liquor tank is connected to the inlet of the filter press;

[0006] The reactor is equipped with: a reaction liquid inlet, an auxiliary material inlet, a resin inlet, and a discharge outlet;

[0007] The reaction liquid port is connected to the filtrate outlet of the filter press;

[0008] The auxiliary material port is connected to the cleaning liquid port via a cleaning valve, to the desorption liquid port via a desorption valve, and to the neutralization liquid port via a neutralization liquid valve.

[0009] The resin inlet is connected to the resin tank;

[0010] The discharge outlet is connected to the waste liquid port via a waste liquid valve, to the enrichment liquid port via a enrichment liquid valve, and to the return liquid tank via a return liquid valve.

[0011] The reaction liquid inlet is equipped with an inlet valve;

[0012] The controller is electrically connected to the cleaning valve, desorption valve, neutralization liquid valve, waste liquid valve, enrichment liquid valve, return liquid valve and inlet liquid valve.

[0013] Furthermore, a sieve is provided inside the reaction vessel;

[0014] The screen is used to restrict the passage of resin.

[0015] Furthermore, the reactor is also equipped with an upper vent, a lower vent, and a pressure relief valve;

[0016] The upper vent is located above the screen and can be controlled to open and close.

[0017] The lower vent is located below the screen and can be controlled to open and close.

[0018] Both the upper and lower vents are used to introduce compressed air into the reactor.

[0019] Furthermore, a flow meter for monitoring the inlet flow rate is installed on the reaction liquid inlet;

[0020] The outlet is equipped with an outlet flow meter for monitoring the outflow rate;

[0021] The controller is electrically connected to the upper vent and the lower vent, and is used to control the opening and closing of the upper vent and the lower vent.

[0022] The controller is electrically connected to the inlet flow meter and the outlet flow meter, and is also used to open the upper vent and / or the lower vent when the difference between the inlet flow rate and the outlet flow rate exceeds a preset difference during the reaction process.

[0023] Furthermore, it also includes pressure monitors;

[0024] The pressure monitor is connected to the inside of the reactor and electrically connected to the controller, and is used to monitor whether the gas pressure inside the reactor exceeds a preset gas pressure value.

[0025] The controller is also used to open the upper vent and / or the lower vent when the gas pressure in the reactor exceeds a preset gas pressure value.

[0026] Furthermore, the reaction vessel comprises two.

[0027] Furthermore, it also includes: a pulping tank;

[0028] The filter press is equipped with a pressure sensor at the liquid inlet.

[0029] The slag outlet of the filter press is connected to the slurry tank via an openable and closable control valve;

[0030] The pressure sensor is used to sense whether the pressure at the inlet of the filter press exceeds a preset pressure value;

[0031] The controller is electrically connected to the pressure sensor and the filter press, and is used to open the control valve when the pressure at the inlet of the filter press exceeds a preset pressure value;

[0032] The slurry outlet of the slurry tank is connected to the return liquid tank.

[0033] Furthermore, both the filter press and the slurry tank comprise two units;

[0034] The two filter presses are respectively connected to the outlet of the mother liquor tank via an electrically controlled valve;

[0035] The two pulping tanks are connected to the two filter presses in a one-to-one correspondence.

[0036] The second aspect of this application provides a method for extracting enriched solutions, which is applied to the enriched solution extraction system described in any of the above claims;

[0037] The method includes:

[0038] The first preset amount of resin is added to the reactor through the resin inlet;

[0039] After opening the inlet valve and adding a second preset amount of filter liquid from the filter press into the reactor through the reaction liquid port, close the inlet valve for a first preset time, and then proceed to the reaction process.

[0040] The reaction process includes:

[0041] Open the inlet valve and return valve to allow the filter liquid from the filter press to be introduced into the reaction vessel through the reaction liquid port. After the resin adsorption is completed, proceed to the cleaning and neutralization process.

[0042] The cleaning and neutralization process includes:

[0043] Close the return valve and the inlet valve and open the waste valve. Within the second preset time period, open the cleaning valve to allow the auxiliary material port to inject cleaning liquid into the reactor.

[0044] Close the cleaning valve, open the neutralization liquid valve within the third preset time period to allow the auxiliary material port to introduce neutralization liquid into the reactor, and then proceed to the desorption process.

[0045] The desorption process includes:

[0046] Close the neutralization liquid valve and waste liquid valve, and open the enrichment liquid valve and desorption valve to allow the auxiliary material port to introduce desorption liquid into the reactor until resin desorption is complete.

[0047] Furthermore, a screen is provided inside the reactor, and an upper vent, a lower vent, and a pressure relief valve are provided on the reactor. The upper vent is located above the screen and can be controlled to open and close. The lower vent is located below the screen and can be controlled to open and close. Both the upper and lower vents are used to introduce compressed air into the reactor.

[0048] The method also includes:

[0049] When the screen becomes clogged, compressed air is introduced into the lower vent for a fourth preset time period, then the lower vent is closed and compressed air is introduced into the upper vent.

[0050] As can be seen from the above technical solutions, this application provides an enrichment liquid extraction system and method. The system includes: a mother liquor tank, a return liquid tank, a filter press, a reaction vessel, a resin tank, and a controller. The outlet of the mother liquor tank is connected to the inlet of the filter press. The reaction vessel is provided with: a reaction liquid outlet, an auxiliary material outlet, a resin outlet, and a discharge outlet. The reaction liquid outlet is connected to the filtrate outlet of the filter press. The auxiliary material outlet is connected to a cleaning liquid outlet via a cleaning valve, a desorption liquid outlet via a desorption valve, and a neutralization liquid outlet via a neutralization liquid valve. The resin outlet is connected to the resin tank. The discharge outlet is connected to a waste liquid outlet via a waste liquid valve, an enrichment liquid outlet via an enrichment liquid valve, and a return liquid tank via a return liquid valve. The reaction liquid outlet is provided with an inlet valve. The controller is electrically connected to the cleaning valve, desorption valve, neutralization liquid valve, waste liquid valve, enrichment liquid valve, return liquid valve, and inlet valve.

[0051] By controlling the opening and closing of each valve through the controller, the feeding, addition of auxiliary materials and liquid discharge of the reactor can be controlled, realizing the automatic control of material transfer during the extraction of enriched liquid. This avoids the safety and pollution risks associated with manual feeding and material transfer, and can effectively reduce the labor intensity of workers and improve production efficiency. Attached Figure Description

[0052] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0053] Figure 1 A process flow diagram of an enrichment solution extraction system provided in this application embodiment;

[0054] Figure 2 An enlarged view of the positions of the mother liquor tank and filter press in an enrichment liquid extraction system provided in this application embodiment;

[0055] Figure 3 An enlarged view of the reaction vessel location of an enrichment solution extraction system provided in this application embodiment;

[0056] In the diagram: 10. Mother liquor tank; 11. First buffer tank; 20. Return liquid tank; 21. Second buffer tank; 30. Filter press; 31. Pressure sensor; 32. Filter plate; 33. Electrically controlled valve; 40. Reactor; 41. Reaction liquid inlet; 42. Auxiliary material inlet; 43. Resin inlet; 44. Discharge outlet; 45. Inlet valve; 46. Screen; 421. Cleaning valve; 422. Cleaning liquid inlet; 423. Desorption valve; 424. Desorption... 425. Neutralization liquid valve; 426. Neutralization liquid port; 441. Waste liquid valve; 442. Waste liquid port; 443. Enrichment liquid valve; 444. Enrichment liquid port; 445. Return liquid valve; 446. Outlet flow meter; 447. On / off valve; 50. Resin tank; 60. Pressure monitor; 70. Slurry tank; 81. Flow meter; 82. Proportional regulating valve; 83. Pressure gauge; 84. Pressure sensor; 85. Pneumatic valve. Detailed Implementation

[0057] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments in this application specification, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection claimed in this application.

[0058] In the description of the embodiments of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application 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. Therefore, they should not be construed as limitations on the embodiments of this application. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0059] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a replaceable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0060] Please see Figure 1 and Figure 2The first aspect of this application provides an enrichment liquid extraction system, including: a mother liquor tank 10, a return liquid tank 20, a filter press 30, a reaction vessel 40, a resin tank 50, and a controller.

[0061] The mother liquor tank 10 can be used to store aluminum hydroxide mother liquor, and the outlet of the mother liquor tank 10 is connected to the inlet of the filter press 30. The mother liquor tank 10 is used to supply mother liquor to the filter press 30; wherein, the inlet of the mother liquor tank 10 is connected to the transmission pipe of the aluminum hydroxide mother liquor, and the outlet of the mother liquor tank 10 can be connected to the filter press 30 through the first pump body 12, and an electrically controlled proportional regulating valve 82, a flow meter 81 and a pressure gauge 83 can be installed between the outlet of the mother liquor tank 10 and the inlet of the filter press 30.

[0062] The reactor 40 is equipped with: a reaction liquid port 41, an auxiliary material port 42, a resin port 43, and a discharge port 44.

[0063] The reaction liquid port 41 is connected to the filtrate outlet of the filter press 30, so that after the filter press 30 filters the mother liquor, the filtrate obtained enters the reaction vessel 40 through the reaction liquid port 41.

[0064] The auxiliary material port 42 is connected to the cleaning liquid port 422 via the cleaning valve 421, to the desorption liquid port 424 via the desorption valve 423, and to the neutralization liquid port 426 via the neutralization liquid valve 425. The cleaning liquid can be, for example, pure water; the neutralization liquid can include acid neutralization liquid and alkali neutralization liquid.

[0065] The resin port 43 is connected to the resin tank 50; wherein, the resin port 43 is provided with a resin valve 51 electrically connected to the controller, so that the controller can control whether to add resin to the reactor 40 by controlling the opening and closing of the resin valve 51.

[0066] The discharge port 44 is connected to the waste liquid port 442 via a waste liquid valve 441, to the enrichment liquid port 444 via a enrichment liquid valve 443, and to the return liquid tank 20 via a return liquid valve 445. The reaction liquid port 41 is equipped with an inlet valve 45. In addition, the discharge port 44 can be connected to the waste liquid port 442 and the enrichment liquid port 444 via a shut-off valve 447, so that when the shut-off valve 447 is closed, the discharge port 44 simultaneously disconnects from both the waste liquid port 442 and the enrichment liquid port 444.

[0067] The controller is electrically connected to the cleaning valve 421, desorption valve 423, neutralization liquid valve 425, waste liquid valve 441, enrichment liquid valve 443, return liquid valve 445 and inlet valve 45, and is used to control the opening ratio or closing of the cleaning valve 421, desorption valve 423, neutralization liquid valve 425, waste liquid valve 441, enrichment liquid valve 443, return liquid valve 445 and inlet valve 45.

[0068] A first buffer tank 11 can be installed between the filter press 30 and the reaction vessel 40 to temporarily store the filtrate from the filter press 30. Similarly, a second buffer tank 21 can be installed between the reaction vessel 40 and the return liquid tank 20 to temporarily store the return liquid after the reaction. The first buffer tank 11 and the reaction vessel 40 can be connected via a second pump body 13; the second buffer tank 21 and the return liquid tank 20 can be connected via a third pump body 22. A proportional regulating valve 82, a flow meter 81, and a pressure sensor 84 can be connected between the second buffer tank 21 and the return liquid tank 20. The first buffer tank 11 can also be connected to a pressure sensor 84.

[0069] When resin valve 51 is opened, resin can be added into reactor 40 through resin port 43. It should be noted that the resin is an adsorption resin, which can adsorb metal ions in the mother liquor after contacting it; for example, in this embodiment, the resin can adsorb gallium ions in aluminum hydroxide mother liquor.

[0070] When the inlet valve 45 is opened, the first buffer tank 11 or the filter press 30 can put the filtrate from the filter press 30 into the reaction vessel 40 through the reaction liquid port 41, so that the mother liquor enters the reaction vessel and reacts with the resin.

[0071] When cleaning valve 421 is open, the cleaning solution flowing from cleaning port 422 can be introduced into reactor 40 through auxiliary material port 42 to clean the resin after reaction. When neutralization valve 425 is open, the neutralization solution flowing from neutralization port 426 can be introduced into reactor 40 through auxiliary material port 42 to neutralize the resin after reaction. When desorption valve 423 is open, the desorption solution flowing from desorption port 424 can be introduced into reactor 40 through auxiliary material port 42, thereby allowing the desorption solution to react with the adsorbed resin to produce a enriched solution, such as a gallium enriched solution.

[0072] When the return valve 445 is opened, the post-reaction liquid in the reactor 40 can be discharged through the outlet 44 into the return tank 20, thereby returning the mother liquor adsorbed by the resin to the return tank 20 for collection. When the waste liquid valve 441 is opened, the cleaning liquid after cleaning and the neutralized liquid after neutralization in the reactor 40 can be discharged through the outlet 44 into the waste liquid port 442. When the enrichment liquid valve 443 is opened, the enrichment liquid formed by the desorption liquid and the resin can be discharged through the outlet 44 into the enrichment liquid port 444.

[0073] In this embodiment, the controller can control the opening and closing of various proportional regulating valves 82, on / off valves 447, cleaning valves 421, desorption valves 423, neutralizing liquid valves 425, waste liquid valves 441, enrichment liquid valves 443, return liquid valves 445, and inlet valves 45. Thus, in the actual production process, by controlling the opening and closing of each valve, material transfer is achieved, thereby realizing the automatic feeding, automatic addition of auxiliary materials, and discharge of the enrichment liquid during enrichment liquid extraction. During production, there is no need for manual material transfer by workers, which reduces the labor intensity of workers, improves production efficiency, and reduces safety and pollution risks.

[0074] Furthermore, as can be seen from the enrichment liquid extraction method described below, the production process includes a reaction step, a cleaning and neutralization step, and a desorption step. In this embodiment, by controlling the opening ratio of the inlet valve 45, cleaning valve 421, desorption valve 423, neutralization liquid valve 425, waste liquid valve 441, enrichment liquid valve 443, and return liquid valve 445 through a controller, the inlet and outlet liquid volumes of the reaction vessel 40 can be made consistent in the reaction step, cleaning and neutralization step, and desorption step, thereby achieving efficient and continuous production and improving production efficiency.

[0075] It should be noted that a proportional regulating valve 82, a flow meter 81, and a pneumatic valve 85 may be installed between the auxiliary material port 42 and the cleaning liquid port 422, the desorption liquid port 424, and the neutralizing liquid port 426.

[0076] In one embodiment, a screen 46 is provided inside the reactor 40; the screen 46 is used to restrict the passage of resin.

[0077] The screen 46 is used to separate the resin and prevent it from being discharged from the outlet 44 during the discharge process of the reactor 40.

[0078] Furthermore, the reactor 40 is also equipped with an upper vent 401, a lower vent 402, and a pressure relief valve 403; the upper vent 401 is located above the screen 46 and can be controlled to open and close; the lower vent 402 is located below the screen 46 and can be controlled to open and close; both the upper vent 401 and the lower vent 402 are used to introduce compressed air into the reactor 40.

[0079] Specifically, during the drainage process of the reactor 40, resin may adhere to the screen 46 and clog it, leading to abnormal drainage. Therefore, in this embodiment, compressed air can be introduced into the reactor 40 through the upper vent 401 and the lower vent 402, increasing the internal air pressure and clearing the clogged screen, thus allowing the reactor 40 to drain smoothly.

[0080] In one embodiment, an inlet flow meter 411 for monitoring the inlet flow rate is provided on the reaction liquid port 41; an outlet flow meter 446 for monitoring the outlet flow rate is provided on the outlet 44; a controller is electrically connected to the upper vent 401 and the lower vent 402 to control the opening and closing of the upper vent 401 and the lower vent 402; the controller is also electrically connected to the inlet flow meter 411 and the outlet flow meter 446, and is also used to open the upper vent 401 and / or the lower vent 402 when the difference between the inlet flow rate and the outlet flow rate exceeds a preset difference during the reaction process.

[0081] Specifically, by acquiring the inlet and outlet flow rates, the controller can understand the inlet status of the reaction vessel 41 and the outlet status of the discharge port 44. Simultaneously, the controller compares the inlet and outlet flow rates to obtain the difference between them, which is the inlet flow rate minus the outlet flow rate. When the difference exceeds a preset value, it indicates a possible abnormal discharge due to blockage of the screen 46. The controller then opens the upper vent 401 and / or the lower vent 402 to increase the internal air pressure of the reactor 40, thereby clearing the blockage in the screen 46 through vertical air pressure compression.

[0082] As one embodiment, it also includes a pressure monitor 60; the pressure monitor 60 is connected to the inside of the reactor 40 and electrically connected to the controller, and is used to monitor whether the gas pressure inside the reactor 40 exceeds a preset gas pressure value; the controller is also used to open the upper vent 401 and / or the lower vent 402 when the gas pressure inside the reactor 40 exceeds the preset gas pressure value.

[0083] Specifically, in this embodiment, when both the upper vent 401 and the lower vent 402 are closed, if the controller detects through the pressure monitor 60 that the gas pressure inside the reactor 40 exceeds the preset gas pressure value, it indicates that the gas pressure inside the reactor 40 may have increased due to abnormal liquid discharge. In this case, the controller opens the upper vent 401 and / or the lower vent 402 to further increase the gas pressure inside the reactor 40, and the blockage of the sieve plate 46 is cleared by the pressure squeezing up and down.

[0084] It should be noted that the pressure monitor 60 can be set up independently or simultaneously with the inlet flow meter 411 and the outlet flow meter 446.

[0085] In this embodiment, a pressure relief valve 403 is also provided to open when the internal pressure of the reactor 40 exceeds the pressure relief valve 403's withstand value, so as to avoid overpressure inside the reactor 40 and explosion or other situations.

[0086] In one embodiment, reactor 40 comprises two.

[0087] Specifically, the two reactors 40 have identical structures and connections. By setting up two reactors 40, they can be used alternately during the production process. For example, one reactor 40 can perform the reaction process, while the other reactor 40 can perform the cleaning, neutralization, and desorption processes, thus achieving continuous alternating operation.

[0088] In one embodiment, the system further includes: a slurry tank 70; a pressure sensor 31 installed at the inlet of the filter press 30; the filter press 30 connected to the slurry tank 70 via an openable / closable filter plate 32; the pressure sensor 31 is used to sense whether the pressure at the inlet of the filter press 30 exceeds a preset pressure value; a controller electrically connected to the pressure sensor 31 and the filter press 30 is used to move the filter plate 32 to connect the filter press 30 to the slurry tank 70 when the amount of filter residue inside the filter press 30 exceeds a preset amount; the outlet of the slurry tank 70 is connected to a return tank 20. After the filter press 30 is connected to the slurry tank 70, the filter residue inside the filter press 30 falls into the slurry tank 70 through a receiving hopper; after the filter residue inside the filter press 30 is discharged, the controller can then control the filter plate 32 to seal the filter press 30 from the slurry tank 70.

[0089] Specifically, the slurry tank 70 is used to slurry the filter cake produced by the filter press 30. When the amount of filter cake inside the filter press 30 exceeds a preset quantity, the pressure in the inlet pipe of the filter press 30 will rise, causing the pressure sensor 31 to rise above the preset pressure value. Then, the controller controls the filter plate 32 to open, allowing the filter cake to be discharged into the slurry tank 70. Next, a stirring liquid, such as tap water, is added to the slurry tank 70, and then the stirring liquid is mixed with the filter cake to slurry it. Finally, the slurry tank 70 discharges the slurried filter cake into the return liquid tank 20 for collection.

[0090] In one embodiment, there are two filter presses 30 and two slurry tanks 70; the two filter presses 30 are respectively connected to the outlet of the mother liquor tank 10 through an electric control valve 33; the two slurry tanks 70 are connected to the two filter presses 30 in a one-to-one correspondence.

[0091] By setting up two filter presses 30 and a slurry tank 70, the two filter presses 30 can work alternately. For example, when the amount of filter residue inside one filter press 30 exceeds the preset amount, the filter press 30 stops filtration. At this time, the electric control valve 33 switches to the outlet of the mother liquor tank 10 to connect to the other filter press 30, so that when one filter press 30 discharges filter residue, the other filter press 30 can perform filtration operation, avoiding production interruption.

[0092] It should be noted that the pressure sensor 31 can also be, for example, a weight sensor, a contact sensor, etc. Specifically, when the filter press 30 is full of material, the controller can control the filter plate 32 to open and switch the mother liquor tank 10 to another filter press 30.

[0093] The second aspect of this application provides a method for extracting enriched solutions, which is applied to the enriched solution extraction system of any of the above claims;

[0094] The method includes:

[0095] S1. A first preset amount of resin is added to the reactor 40 through the resin port 43.

[0096] The first preset amount can be, for example, 1 / 3 of the volume of the reactor 40, that is, in step S1, 1 / 3 of the volume of resin is added into the reactor 30.

[0097] S2. Open the inlet valve 45, and after adding the second preset amount of filter liquid from the filter press 30 into the reactor 40 through the reaction liquid port 41, close the inlet valve 45 for the first preset time, and then proceed to the reaction process.

[0098] The filtrate from filter press 30 refers to the clear aluminum hydroxide solution collected after filtering aluminum hydroxide mother liquor through filter press 30. The second preset amount can be, for example, 1 / 3 of the volume of reaction vessel 40; that is, in step S2, 1 / 3 of the volume of the filtrate from filter press 30 is added to reaction vessel 30 to allow for vertical mixing. The first preset time can be the time allowed for the initial reaction of the filtrate from filter press 30 and the resin, for example, 15 minutes; during the first preset time, the stirring paddle installed in reaction vessel 40 can stir to accelerate the vertical mixing of the filtrate and allow the resin to be fully soaked and moistened by the filtrate.

[0099] The reaction process includes:

[0100] S3. Open the inlet valve 45 and the return valve 445 so that the filtrate from the filter press 30 is introduced into the reactor 40 through the reaction port 41. After the resin adsorption is completed, the process of cleaning and neutralizing begins.

[0101] Specifically, in step S31, the controller also controls the opening ratio of the liquid inlet valve 45 to make the liquid inlet and liquid outlet of the reactor 40 consistent.

[0102] For example, by coordinating the inlet valve 45, the inlet flow meter 411, and the outlet flow meter 446, the filtrate feed rate into the reaction vessel 40 is controlled to be 80 m³. 3 / h and the discharge rate at outlet 44 is 80m 3The flow rate is adjusted to maintain the resin-to-aluminum hydroxide solution ratio in the adsorption reactor 40 to meet process requirements, meaning the ratio of the first preset amount to the second preset amount remains stable throughout the reaction process. During the continuous inflow and outflow of the aluminum hydroxide solution, the resin in the reactor 40 continuously reacts and adsorbs with the continuous supply of aluminum hydroxide solution, continuously adsorbing gallium ions from the aluminum hydroxide solution until the resin is saturated. Once this point, the aluminum hydroxide solution input is stopped, and the adsorbed aluminum hydroxide solution is discharged to the second buffer tank 21 and then returned to the return tank 20.

[0103] It should be noted that staff can determine whether the resin adsorption is complete by judging the gallium ion content in the liquid discharged from outlet 44.

[0104] The cleaning and neutralization process includes:

[0105] S41. Close the return valve 445 and the inlet valve 45 and open the waste valve 441. Within the second preset time period, open the cleaning valve 421 so that the auxiliary material port 42 can put the cleaning liquid into the reactor 40.

[0106] S42. Close the cleaning valve 421, and open the neutralizing liquid valve 425 within the third preset time period so that the auxiliary material port 42 can put the neutralizing liquid into the reactor 40, and then proceed to the desorption process.

[0107] In the cleaning and neutralization process, cleaning solution and neutralization solution are successively introduced into the reactor 40 to wash and neutralize the resin. The solutions after washing and neutralization are discharged from the waste outlet 442 for easy collection and to avoid environmental pollution. The third preset time can be determined according to the actual time required for acid and alkali neutralization of the resin during production.

[0108] In steps S41 and S42, the controller can also control the opening ratio of the cleaning valve 421, the neutralizing liquid valve 425 and the waste liquid valve 441 to make the inflow and outflow of the reactor 40 in the cleaning and neutralization process consistent.

[0109] For example, the inflow rate of the cleaning solution, the inflow rate of the neutralizing solution, and the outflow rate of the reactor during the cleaning and neutralization process can all be 100m³. 3 / h.

[0110] The desorption process includes:

[0111] S5. Close the neutralization liquid valve 425 and the waste liquid valve 441, and open the enrichment liquid valve 443 and the desorption valve 423, so that the auxiliary material port 42 can introduce the desorption liquid into the reactor 40 until the resin desorption is completed.

[0112] Similarly, in the desorption process, the controller can also control the opening ratio of the desorption valve 423 and the enrichment liquid valve 443 to make the inflow and outflow of the reactor 40 consistent. For example, the inflow of the desorption liquid and the outflow of the reactor during the desorption process can both be 100m³. 3 / h. The desorption liquid discharged from outlet 44 can flow to desorption liquid outlet 424, so that the inflow and outflow of desorption liquid are equal, thereby ensuring that the desorption liquid is in continuous contact with the resin in reactor 40 for desorption treatment. Under the rinsing of the circulating desorption liquid, the resin that has adsorbed saturated gallium ions releases the adsorbed gallium ions into the desorption liquid. The release of gallium ions into the desorption liquid makes the desorption liquid contain a large number of gallium ions, forming the gallium enrichment solution required by the process.

[0113] In one embodiment, a screen 46 is provided inside the reactor 40, and an upper vent 401, a lower vent 402, and a pressure relief valve 403 are provided on the reactor 40. The upper vent 401 is located above the screen 46 and can be controlled to open and close; the lower vent 402 is located below the screen 46 and can be controlled to open and close; both the upper vent 401 and the lower vent 402 are used to introduce compressed air into the reactor 40.

[0114] The enrichment solution extraction method provided in this embodiment also includes: a dredging step.

[0115] The unblocking steps include: when the screen 46 is blocked, controlling the lower vent 402 to introduce compressed air within a fourth preset time period, then closing the lower vent 402 and controlling the upper vent 401 to introduce compressed air.

[0116] In this embodiment, the blockage of the screen 46 can be determined by the pressure monitor 60 inside the reactor 40 or by the cooperation of the inlet flow meter 411 and the outlet flow meter 446. When the screen 46 is blocked, compressed air is first introduced into the lower vent 402 for a fourth preset time period, causing the screen 40 to be compressed by the gas and thus cleared or loosened. Then, compressed air is introduced into the upper vent 401 to clear the screen 46. The fourth preset time period can be, for example, 2 seconds.

[0117] It should be noted that the unblocking step can be carried out in the above-mentioned reaction process, cleaning and neutralization process and desorption process, that is, it can be carried out when the screen 46 is found to be blocked.

[0118] In the gallium enrichment solution extraction system and method provided in this application, the entire production process can be observed and operated in real time through the controller's operating station. It boasts a high degree of automation, convenient operation, reduced labor intensity, and minimized environmental and product pollution risks. This enables rational and safe gallium enrichment solution extraction. By connecting independent devices according to process requirements, integrated automated production is achieved, saving production costs, improving production safety and product quality. The system is easy to operate and highly flexible, ensuring both high production efficiency and safe production. All data is centrally displayed and stored on the controller's system operating station, facilitating process adjustment and viewing of production parameters. The integrated automated production system further ensures safe production.

[0119] The above are merely preferred embodiments of this application and are not intended to limit the present invention. Although this application has been described in detail with reference to examples, those skilled in the art can still modify the technical solutions described in the foregoing examples or make equivalent substitutions for some of the technical features. However, any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An enrichment solution extraction system, characterized in that, include: Mother liquor tank (10), return liquid tank (20), filter press (30), reaction vessel (40), resin tank (50) and controller; The outlet of the mother liquor tank (10) is connected to the inlet of the filter press (30); The reactor (40) is provided with: reaction liquid port (41), auxiliary material port (42), resin port (43) and discharge port (44). The reaction liquid port (41) is connected to the filtrate outlet of the filter press (30); The auxiliary material port (42) is connected to the cleaning liquid port (422) via the cleaning valve (421), to the desorption liquid port (424) via the desorption valve (423), and to the neutralization liquid port (426) via the neutralization liquid valve (425). The resin port (43) is connected to the resin tank (50); The discharge port (44) is connected to the waste liquid port (442) via the waste liquid valve (441), to the enrichment liquid port (444) via the enrichment liquid valve (443), and to the return liquid tank (20) via the return liquid valve (445). The reaction liquid port (41) is equipped with an inlet valve (45). The controller is electrically connected to the cleaning valve (421), desorption valve (423), neutralization liquid valve (425), waste liquid valve (441), enrichment liquid valve (443), return liquid valve (445) and inlet valve (45). A screen (46) is provided inside the reactor (40). The screen (46) is used to restrict the passage of resin; The reactor (40) is also provided with an upper vent (401), a lower vent (402) and a pressure relief valve (403). The upper vent (401) is located above the screen (46) and can be controlled to open and close; The lower vent (402) is located below the screen (46) and can be controlled to open and close; Both the upper vent (401) and the lower vent (402) are used to introduce compressed air into the reactor (40) when it is opened; When the screen (46) is blocked, the lower vent (402) is controlled to introduce compressed air within a fourth preset time period, so that the screen (46) is squeezed by gas, and then compressed air is introduced through the upper vent (401). The reaction liquid inlet (41) is equipped with a liquid inlet flow meter (411) for monitoring the liquid inlet flow rate. The outlet (44) is equipped with an outlet flow meter (446) for monitoring the outlet flow rate. The controller is electrically connected to the upper vent (401) and the lower vent (402) and is used to control the opening and closing of the upper vent (401) and the lower vent (402); The controller is electrically connected to the inlet flow meter (411) and the outlet flow meter (446), and is also used to open the upper vent (401) and the lower vent (402) when the difference between the inlet flow and the outlet flow exceeds a preset difference during the reaction process.

2. The enrichment solution extraction system according to claim 1, characterized in that, It also includes a pressure monitor (60); The pressure monitor (60) is connected to the inside of the reactor (40) and electrically connected to the controller, and is used to monitor whether the gas pressure inside the reactor (40) exceeds the preset gas pressure value; The controller is also used to open the upper vent (401) and the lower vent (402) when the gas pressure in the reactor (40) exceeds the preset gas pressure value.

3. The enrichment solution extraction system according to claim 1, characterized in that, The reactor (40) comprises two.

4. The enrichment solution extraction system according to claim 1, characterized in that, Also includes: Pulping tank (70); The filter press (30) is equipped with a pressure sensor (31) at its inlet. The slag outlet of the filter press (30) is connected to the slurry tank (70) through an openable and closable filter plate (32). The pressure sensor (31) is used to sense whether the pressure at the inlet of the filter press (30) exceeds a preset pressure value; The controller is electrically connected to the pressure sensor (31) and the filter press (30), and is used to move the filter plate (32) so that the filter press (30) is connected to the slurry tank (70) when the pressure at the inlet of the filter press (30) exceeds the preset pressure value. The slurry outlet of the slurry tank (70) is connected to the return liquid tank (20).

5. The enrichment solution extraction system according to claim 4, characterized in that, The filter press (30) and the slurry tank (70) each include two; The two filter presses (30) are respectively connected to the outlet of the mother liquor tank (10) via an electronically controlled valve (33); The two pulping tanks (70) are connected to the two filter presses (30) in a one-to-one correspondence.

6. A method for extracting enrichment solutions, characterized in that, Applied to the enrichment extract system according to any one of claims 1-5; The method includes: A first preset amount of resin is added to the reactor (40) through the resin port (43); After opening the inlet valve (45), and adding the second preset amount of filter liquid from the filter press (30) into the reactor (40) through the reaction liquid port (41), close the inlet valve (45) for a first preset time, and then proceed to the reaction process; The reaction process includes: Open the inlet valve (45) and the return valve (445) so that the filtrate from the filter press (30) is introduced into the reactor (40) through the reaction port (41) until the resin adsorption is completed and the cleaning and neutralization process is started. The cleaning and neutralization process includes: Close the return valve (445) and the inlet valve (45) and open the waste valve (441). Within the second preset time period, open the cleaning valve (421) so that the auxiliary material port (42) can put cleaning liquid into the reactor (40). Close the cleaning valve (421), and open the neutralization liquid valve (425) within the third preset time period so that the auxiliary material port (42) puts the neutralization liquid into the reactor (40), and then enters the desorption process; The desorption process includes: Close the neutralization liquid valve (425) and waste liquid valve (441) and open the enrichment liquid valve (443) and desorption valve (423) so that the auxiliary material port (42) introduces the desorption liquid into the reactor (40) until the resin desorption is completed.

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