Continuous impurity removal and precipitation device for ionic type rare earth ore leachate

Abstract

The invention relates to the technical field of rare earth ore precipitation equipment, and discloses an ionic rare earth ore leachate continuous impurity removal and precipitation device which comprises a fixing frame. The reaction box is used for providing a fusion space for the rare earth ore leaching agent and a precipitator; the precipitation mechanism is used for improving the fusion efficiency of the rare earth ore and a precipitator and accelerating ion precipitation; and the driving part is used for driving the precipitation mechanism to operate. According to the continuous impurity removal and precipitation device for the ionic type rare earth ore leachate, a polymerization solution in the whole reaction box can be divided into multiple branches through a liquid dividing pipe by arranging the precipitation mechanism, then mutual polymerization and fusion of the branches are utilized, and therefore the fusion efficiency of the leachate and a precipitator is improved, and compared with a traditional stirring mode, the continuous impurity removal and precipitation device is quicker and more convenient to use. And meanwhile, a backflow channel can be formed through backflow of the flow dividing pipe and the fusion cavity, so that circulating fusion precipitation is achieved, flocculation precipitation can be conducted on the leaching solution more thoroughly, and ions of the rare earth ore leaching solution are separated out to the maximum extent.

Description

TECHNICAL FIELD

[0001] The present application relates to rare earth ore precipitation equipment technical field, specifically to a kind of ion type rare earth ore leaching liquor continuous impurity removal precipitation device. BACKGROUND

[0002] Rare earth ore mainly exists in the form of mineral in the crust, and it mainly has three kinds: as the basic component element of mineral, rare earth exists in the form of ionic compound in mineral lattice, and constitutes indispensable component of mineral. This kind of mineral is usually called rare earth mineral, such as monazite, bastnaesite and the like. As impurity element of mineral, in the form of isomorphism, it is dispersed in rock-forming mineral and rare metal mineral, and this kind of mineral can be called mineral containing rare earth element, such as apatite, fluorite and the like, which is adsorbed on the surface or between particles in the form of ions.

[0003] And the current precipitation rare earth process is a commonly used method for separating rare earth elements from rare earth ore. The process forms a precipitate by reacting rare earth elements in solution with chemical reagents, and high-purity rare earth products are obtained by separation and treatment of the precipitate. The most common one generally adopts oxalic acid precipitation rare earth principle, which is to use oxalic acid to react with rare earth ions under certain conditions, and the insoluble rare earth oxalate precipitate is formed, so as to realize the separation of rare earth ions from the solution.

[0004] And in the precipitation process, generally, the leaching liquor and the precipitant need to be fused to react, so as to form ion precipitation. The existing equipment generally has poor impurity removal and precipitation effect on leaching liquor. Because after the precipitant is fused with the leaching liquor, the traditional method adopts stirring to fuse, but the fusion effect of the two solutions is poor after stirring, and the precipitation time is long. At the same time, the current leaching liquor cannot realize the circulating precipitation, because some leaching liquor cannot completely and comprehensively precipitate the ions in the leaching liquor, so a kind of ion type rare earth ore leaching liquor continuous impurity removal precipitation device is proposed to solve the above problems. SUMMARY

[0005] (I) Technical problems solved

[0006] In view of the deficiencies of the prior art, the present application provides a kind of ion type rare earth ore leaching liquor continuous impurity removal precipitation device, solve the problem of poor precipitation effect of rare earth ore leaching liquor in prior art, poor precipitation effect, cannot completely and comprehensively carry out the circulating precipitation of rare earth ore.

[0007] (II) Technical scheme

[0008] In order to achieve the above object, the present application provides the following technical scheme: a continuous impurity removal and precipitation device for ion type rare earth ore leaching solution, comprising a fixing frame; a reaction box for providing a fusion space for rare earth ore leaching solution and a precipitant; a precipitation mechanism for improving the fusion efficiency of rare earth ore and the precipitant and accelerating ion precipitation; a driving member for driving the operation of the precipitation mechanism; the precipitation mechanism comprises a liquid distribution member and a liquid adding member; the reaction box is divided into three areas, area one is a piston cavity, area two is a fusion cavity, and area three is an extrusion cavity.

[0009] The liquid distribution member comprises a plurality of liquid distribution pipes, one end of the liquid distribution pipe is in communication with the extrusion cavity, the other end of the liquid distribution pipe is in communication with the fusion cavity, an inlet is arranged above the fusion cavity on the reaction box for supplementing the rare earth ore leaching solution consumed inside the reaction box

[0010] Preferably, the driving member comprises a driving motor, the driving motor is connected with a driving shaft through a transmission member, the driving shaft is rotatably connected to the reaction box, a circulating push member is arranged on the driving shaft, the circulating push member is used to push the leaching solution in the extrusion cavity to flow back from the inside of the plurality of liquid distribution pipes to the inside of the fusion cavity, realizing the convergence of the separated flow.

[0011] Preferably, the circulating push member comprises a piston sheet, the piston sheet is slidably connected inside the piston cavity, a sliding sleeve is connected to the piston sheet, a rotary groove is arranged inside the piston cavity on the driving shaft, a sliding pin is fixedly connected in the sliding sleeve, the sliding pin is slidably connected to the rotary groove, two guide rods are connected to the piston sheet, a push plate is connected to the right end of the guide rod, the push plate is slidably connected inside the extrusion cavity, and a one-way valve is arranged on the push plate and the piston sheet.

[0012] Preferably, the bottom of the push plate is slidably connected with a sliding sheet, the sliding sheet is fixedly connected inside the reaction box, a precipitation cavity is arranged between the sliding sheet and the reaction box, a sleeve shaft is connected to the side surface of the push plate, and a sleeve pipe is slidably connected to the surface of the sleeve shaft.

[0013] Preferably, the inside of the reaction box is respectively connected with a connecting sheet and a partition plate, the partition plate is connected with the sleeve pipe, an impeller is connected to the inside of the fusion cavity on the driving shaft, and a decontamination opening is formed in the partition plate.

[0014] Preferably, the liquid adding member comprises an additional pipe, a connecting pipe is communicated on the additional pipe, the connecting pipe is connected in an external precipitant tank through a pipeline, a plug is slidably connected inside the additional pipe, a jack rod is connected to the left side of the plug, the jack rod is connected with the piston sheet, a guide hole is formed in the inside of the additional pipe, the guide hole is in communication with the connecting sheet, and a liquid discharge opening is formed in the impeller.

[0015] Preferably, the drive shaft has a flow channel inside, and the guide hole, connecting piece, drive shaft and drain port form a flow loop for quantitatively squeezing out the precipitant. The top plug is provided with a one-way hole.

[0016] Preferably, a sedimentation rack is connected to the bottom of the reaction chamber, the sedimentation rack is connected to the fusion chamber and the extrusion chamber, and a sealing cap is threaded to the right side of the sedimentation rack.

[0017] Preferably, the drain outlet is provided in multiple sets, and the multiple sets of drain outlets are distributed in a circular array with the center of the impeller as the axis of symmetry.

[0018] (III) Beneficial Effects

[0019] Compared with the prior art, the present invention provides a continuous impurity removal and precipitation device for ion-type rare earth ore leaching solution, which has the following beneficial effects:

[0020] 1. This continuous impurity removal and precipitation device for ion-type rare earth ore leaching solution, by setting a precipitation mechanism, can divide the polymerization solution inside the entire reaction tank into multiple branches through a distribution pipe. Then, by utilizing the mutual polymerization and fusion of the branches, the fusion efficiency of the leaching solution and precipitant is improved, which is faster than the traditional stirring method. At the same time, by utilizing the reflux setting of the distribution pipe and the fusion chamber, a reflux channel can be formed, thereby realizing cyclic fusion precipitation, which can more thoroughly flocculate and precipitate the leaching solution and maximize the precipitation of ions from the rare earth ore leaching solution.

[0021] 2. This continuous impurity removal and precipitation device for ion-type rare earth ore leaching solution can achieve cyclic and uniform replenishment of the precipitant inside the reaction tank through the set liquid addition device. This is because adding a large amount of precipitant at one time may cause local oversaturation of the mixed solution, resulting in fine precipitate particles or even colloidal precipitation, which is not conducive to subsequent solid-liquid separation. Therefore, the liquid addition device can achieve automatic quantitative replenishment of the precipitant inside the reaction tank, thereby achieving efficient and uniform precipitation of the precipitant and rare earth ore leaching solution. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of a continuous impurity removal and precipitation device for ion-type rare earth ore leaching solution proposed in this invention.

[0023] Figure 2 This is a schematic cross-sectional view of the continuous impurity removal and precipitation device for ion-type rare earth ore leaching solution proposed in this invention.

[0024] Figure 3 This is a schematic diagram of the precipitation mechanism of a continuous impurity removal and precipitation device for ion-type rare earth ore leaching solution proposed in this invention.

[0025] Figure 4This is a schematic diagram of the liquid feeding component of a continuous impurity removal and precipitation device for ion-type rare earth ore leaching solution proposed in this invention.

[0026] Figure 5 This is a schematic diagram of the connection structure between the dividing plate and the pusher plate of a continuous impurity removal and precipitation device for ion-type rare earth ore leaching solution proposed in this invention.

[0027] Figure 6 This is a schematic diagram of the rotor connection structure of a continuous impurity removal and precipitation device for ion-type rare earth ore leaching solution proposed in this invention.

[0028] Figure 7 This is a schematic diagram of the sedimentation rack connection structure of a continuous impurity removal and precipitation device for ion-type rare earth ore leaching solution proposed in this invention.

[0029] In the diagram: 1. Fixed frame; 2. Reaction chamber; 3. Separating pipe; 4. Sedimentation mechanism; 401. Drive shaft; 402. Squeezing chamber; 403. Sliding vane; 404. Sedimentation chamber; 405. Fusion chamber; 406. Impeller; 407. Connecting plate; 408. Dividing plate; 409. Guide rod; 410. Rotary groove; 411. Piston chamber; 412. Piston plate; 413. Sliding sleeve; 414. Sedimentation rack; 415. Sealing cover; 416. Top rod; 417. Auxiliary pipe; 418. Top plug; 419. Connecting pipe; 420. Guide hole; 421. Drain port; 422. Impurity removal port; 423. Push plate; 424. One-way valve; 425. Sleeve; 426. Sleeve shaft; 5. Transmission component. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] Please see Figures 1-7 A continuous impurity removal and precipitation device for ion-type rare earth ore leaching solution includes a fixed frame 1; a reaction tank 2 for providing a fusion space for rare earth ore leaching solution and precipitant; a precipitation mechanism 4 for improving the fusion efficiency of rare earth ore and precipitant and accelerating ion precipitation; a driving component for driving the operation of the precipitation mechanism 4; the precipitation mechanism 4 includes a liquid distribution component and a liquid addition component; the reaction tank 2 is divided into three regions: region one is a piston chamber 411, region two is a fusion chamber 405, and region three is a squeezing chamber 402.

[0032] Area 1: The piston chamber 411 is located on one side of the reaction tank 2, and is equipped with a reciprocating piston plate 412 inside to provide sliding space and drive the leachate to circulate within the system. The piston chamber 411 is linked to the drive shaft 401 through a mechanical structure to achieve precise reciprocating motion control.

[0033] Region 2: The fusion chamber 405, located in the middle of reaction tank 2, serves as the main area for the initial mixing and re-fusion of the leachate and precipitant. An inlet is located above the fusion chamber 405 to replenish the rare earth ore leachate; an impeller 406 is installed inside the chamber, rotating under the drive shaft 401 to further enhance the flow disturbance and promote reaction uniformity.

[0034] Region 3: The extrusion chamber 402 and the fusion chamber 405 are separated by a dividing plate 408. Inside, there is a pusher plate 423 that reciprocates under the drive of the piston mechanism, pushing the leachate back into the fusion chamber through multiple liquid distribution pipes 3, forming a "diversion-polymerization" circulating flow mode, which effectively improves the reaction efficiency.

[0035] In this embodiment, the liquid distribution component includes multiple liquid distribution pipes 3. One end of each liquid distribution pipe 3 is connected to the extrusion chamber 402, and the other end is connected to the fusion chamber 405. An inlet is provided on the reaction tank 2 above the fusion chamber 405 to replenish the rare earth ore leaching solution consumed inside the reaction tank 2. The liquid distribution pipes 3 spatially serve as a bridge connecting the extrusion chamber 402 and the fusion chamber 405. One end of each pipe is densely connected to the side wall or top of the extrusion chamber 402, while the other end extends into the internal space of the fusion chamber 405. This parallel arrangement of multiple pipes aims to disperse the initially mixed leaching solution-precipitant slurry from the extrusion chamber 402 from a concentrated liquid flow into multiple independent fine streams. When the pusher plate 423 inside the extrusion chamber 402 performs its pressure stroke under the action of the drive mechanism, the liquid inside the chamber is forced into these liquid distribution pipes 3. During this process, the liquids are subjected to high pressure and flow velocity. When they are injected at high speed from the outlet at the other end of the distributor pipe 3 into the relatively still or slow-flowing liquid in the fusion chamber 405, significant shearing effects and turbulence are generated. The influx of these multiple high-speed jets greatly intensifies the disturbance of the fluid within the fusion chamber 405. Violent collisions, penetrations, and fusions occur between the various streams and between the streams and the main liquid, which is far more efficient and thorough than traditional static stirring or unidirectional stirring. This effectively breaks local concentration gradients, prevents precipitant agglomeration, and ensures that rare earth ions and precipitants fully and uniformly contact and react, thereby accelerating the flocculation and precipitation process. The inlet specially set above the fusion chamber 405 is responsible for replenishing the entire circulating reaction system with fresh rare earth ore leaching solution. As the reaction proceeds and precipitates are released, as well as any clear liquid that may be discharged, the total amount of liquid in the system will decrease. By continuously or intermittently replenishing the leachate through this inlet, the concentration of reactants within the system can be kept stable, and the liquid level can be maintained, ensuring that the outlet of the distributor pipe 3 is always submerged below the liquid surface. This allows the jet mixing effect to function properly, thus achieving truly "continuous" operation. The distributor pipe 3, together with the extrusion chamber 402 and the fusion chamber 405, forms a closed liquid circulation loop. Driven by the driving component, the liquid continuously circulates along the path of "fusion chamber 405 → extrusion chamber 402 → distributor pipe 3 → fusion chamber 405". In each cycle, the liquid undergoes a process of "polymerization in fusion chamber 405 → pressurization in extrusion chamber 402 → diversion and jetting through distributor pipe 3 → repolymerization in fusion chamber 405". This repeated and powerful mixing allows rare earth ions that did not react sufficiently in the initial mixing to have multiple opportunities to come into contact with the precipitant, greatly improving the final precipitation rate of rare earth ions and achieving the goal of "more thorough" precipitation.

[0036] Furthermore, the driving component includes a drive motor, which is connected to a drive shaft 401 via a transmission component 5. The drive shaft 401 is rotatably connected to the reaction chamber 2. A circulation pusher is provided on the drive shaft 401. The circulation pusher is used to push the leachate in the extrusion chamber 402 back from the inside of multiple liquid distribution pipes 3 to the inside of the fusion chamber 405, so as to realize the convergence of the diverted liquids in the fusion.

[0037] Furthermore, the circulating actuator includes a piston plate 412, which is slidably connected inside the piston chamber 411. A sliding sleeve 413 is connected to the piston plate 412. A rotary groove 410 is provided on the drive shaft 401 inside the piston chamber 411. A sliding pin is fixedly connected inside the sliding sleeve 413 and slidably connected to the rotary groove 410. Two guide rods 409 are connected to the piston plate 412. A push plate 423 is connected to the right end of the guide rods 409. The push plate 423 is slidably connected inside the extrusion chamber 402. Both the push plate 423 and the piston plate 412 are equipped with one-way valves 424. The drive motor, as the core power source, is usually an adjustable speed motor to adjust the mixing and circulation intensity according to process requirements, such as different concentrations of leachate. The transmission component 5 is an important link connecting the motor and the actuator. According to the diagram, it usually adopts a belt drive or chain drive. This design not only transmits torque, but also provides overload protection, shock absorption, and easy adjustment of the transmission ratio. It also makes the motor installation position more flexible, facilitating the overall layout and maintenance of the equipment.

[0038] In addition, a sliding plate 403 is slidably connected to the bottom of the push plate 423. The sliding plate 403 is fixedly connected to the inside of the reaction chamber 2. A sedimentation chamber 404 is provided between the sliding plate 403 and the reaction chamber 2. A sleeve 426 is connected to the side of the push plate 423, and a sleeve 425 is slidably connected to the surface of the sleeve 426. (See attached) Figure 3As shown, the circulating actuator is a rotary groove 410 on the drive shaft 401, which cooperates with a sliding sleeve 413 with a sliding pin to form a classic "reciprocating screw" mechanism. When the drive shaft 401 rotates, the sliding pin moves along the trajectory of the rotary groove 410, forcing the sliding sleeve 413 and the connected piston plate 412 and guide rod 409 to make continuous and regular reciprocating motion in the axial direction. The right end of the guide rod 409 is connected to the push plate 423, which is located in the extrusion chamber 402. Therefore, the push plate 423 also reciprocates with the rotation of the drive shaft 401. When the push plate 423 moves to the right during the pressing stroke, it applies a strong pressure to the leachate in the extrusion chamber 402, forcing the liquid to rush into multiple dispensing pipes 3. This process not only provides power for the liquid circulation, but its pressurization effect itself also intensifies the turbulence of the liquid. The pressurized liquid is injected into the fusion chamber 405 at a high speed from the outlet of each dispensing pipe 3. Multiple high-speed jets collide and impact each other in the central region of the fusion chamber 405, generating intense shearing, mixing, and turbulence with the original liquid inside the chamber. This "convergence after diversion" process creates an extremely efficient mixing environment, far superior to traditional stirring blades, ensuring full contact and reaction of the leachate and precipitant at the microscale.

[0039] In addition, the interior of the reaction chamber 2 is connected to a connecting plate 407 and a dividing plate 408. The dividing plate 408 is connected to the sleeve 425. An impeller 406 is connected to the drive shaft 401 inside the fusion chamber 405. The dividing plate 408 has a cleaning port 422. The dividing plate 408 will serve to divide the internal space of the reaction chamber 2. The middle part of the dividing plate 408 is connected to the sleeve 425. The sleeve 425 is slidably fitted on the sleeve shaft 426 of the push plate 423. It allows the push plate 423 and its guide rod 409 to move freely back and forth under the drive, while also largely isolating the fusion chamber 405 and the extrusion chamber 402, preventing the liquids in the two chambers from mixing in large quantities outside the set path, and ensuring that the liquid is mainly forced to circulate through the liquid distribution pipe 3. It provides an additional support point for the reciprocating motion of the push plate 423 assembly, ensuring the stability of the motion trajectory and reducing vibration and uneven wear.

[0040] It is worth noting that the liquid addition component includes an auxiliary pipe 417, which is connected to a connecting pipe 419. The connecting pipe 419 is connected to an external precipitant tank via a pipeline. A top plug 418 is slidably connected inside the auxiliary pipe 417. A top rod 416 is connected to the left side of the top plug 418. The top rod 416 is connected to a piston plate 412. A guide hole 420 is opened inside the auxiliary pipe 417, which is connected to a connecting plate 407. A drain port 421 is opened on the impeller 406. When the piston plate 412 drives the top plug 418 to move to the left, assuming that the left is the suction direction, the movement is achieved through the one-way hole. The purpose of the one-way hole is to provide space for the top plug 418 to move to the left. When the top plug 418 moves to the right, the one-way hole automatically closes, thereby pushing the internal precipitant to flow under pressure.

[0041] It is worth noting that the drive shaft 401 has an internal flow channel. The guide hole 420, connecting plate 407, drive shaft 401, and drain port 421 form a flow loop for quantitatively squeezing out the precipitant. The top plug 418 has a one-way hole. Multiple sets of drain ports 421 are arranged in a circular array with the impeller 406 as the center axis of symmetry. The precipitant discharged from the guide hole 420 first enters the static flow channel inside the connecting plate 407. The connecting plate 407 acts as a fixed transfer station, smoothly guiding the precipitant into the central flow channel of the high-speed rotating drive shaft 401. The liquid containing the precipitant is transported along the central flow channel of the drive shaft 401, finally reaching the impeller 406 fixed at the end of the drive shaft 401. The multiple drain ports 421 on the impeller 406 are the final outlets for the precipitant to enter the reaction system. When the impeller 406 rotates at high speed, the precipitant is thrown out from these discharge ports 421 in a mist or fine jet form under the action of centrifugal force. This dispersion method has significant advantages: on the one hand, the addition point is the central area of ​​the fusion chamber 405 where the reaction and mixing are most intense; on the other hand, the centrifugal force brought about by the rotation ensures that the precipitant can be thrown in all directions instantly, and fully and uniformly mixed with the leachate injected from the separator 3, realizing a rapid reaction at the microscale.

[0042] It is worth mentioning that a sedimentation rack 414 is connected to the bottom of the reaction tank 2. The sedimentation rack 414 is connected to the fusion chamber 405 and the extrusion chamber 402, and a sealing cap 415 is threadedly connected to the right side of the sedimentation rack 414. The sedimentation rack 414 is a key component in this device responsible for collecting, concentrating, and discharging the final product, and it directly affects the completion efficiency and operational convenience of the entire process. The sedimentation rack 414 is fixedly connected to the bottom of the reaction tank 2, and its inlet is directly connected to the bottom space of the fusion chamber 405 and the extrusion chamber 402. This design ensures that the precipitated flocs generated in the main body of the reaction tank 2 can naturally settle and smoothly slide into the sedimentation rack 414 under their own gravity. When the mixture containing the formed precipitate is vigorously circulated and mixed in the upper part of the reaction tank, the relatively independent and calm structure of the sedimentation rack 414 provides an ideal settling environment for the heavier solid precipitate, allowing it to be effectively separated from the liquid and enriched here. When the precipitate accumulates to a certain amount in the sedimentation rack 414, the drive motor can be turned off in time to stop the system operation. After the liquid has settled, the sealing cap 415 is opened, and the concentrated precipitate slurry can be smoothly collected into an external container from the outlet under the action of gravity. This achieves a semi-continuous operation mode where the reaction proceeds continuously and the discharge is intermittent.

[0043] The working principle is as follows: First, an external device injects a mixed solution of rare earth ore through a pipeline from the opening. This solution is injected into the fusion chamber 405, then enters the extrusion chamber 402 through the impurity removal port 422 on the dividing plate 408, eventually filling the internal cavity of the reaction chamber 2. Then, by controlling the operation of the drive motor, the drive shaft 401 is rotated via belt transmission. As the drive shaft 401 rotates, the sliding sleeve 413 reciprocates left and right on its surface through the rotary groove 410. Because the sliding pin inside the sliding sleeve 413 is slidably connected within the rotary groove 410, a reciprocating screw motion module is formed. Then, the sliding sleeve 41... 3 will drive the piston plate 412 to move synchronously. When the piston plate 412 moves, it will drive the push rod 416 to move laterally synchronously. Then the push rod 416 will drive the top plug 418 to slide, thereby squeezing the precipitant inside the auxiliary tube 417. The auxiliary tube 417 is connected to the precipitant tank through the connecting pipe 419. So each time the top plug 418 moves laterally, it will squeeze the precipitant inside the auxiliary tube 417. Then it will enter the connecting plate 407 through the guide hole 420, and then enter the internal cavity of the drive shaft 401. Finally, it will be discharged from the drain port 421 on the impeller 406 and merge with the rare earth ore leaching solution. Simultaneously, as the piston plate 412 moves laterally, it will synchronously drive the push plate 423 to move laterally through the connection of the guide rod 409. The push plate 423 will squeeze the solution inside the extrusion chamber 402, thereby squeezing the leachate from the positions of multiple liquid distribution pipes 3 back into the fusion chamber 405, forming a backflow fusion, thus ensuring subsequent continuous precipitation and flocculation, making the precipitation of rare earth ore more thorough. Therefore, at this time, the backflowing leachate and precipitant will mix, and the rotation of the drive shaft 401 will also drive the rotation of the impeller 406. By using the rotation of the impeller 406, the precipitant can be more evenly fused into the interior of the leachate, accelerating precipitation. By using a quantitative extrusion method, the effective and balanced precipitation of rare earth ore leachate can be ensured, and excessive colloidal precipitation will not occur. Furthermore, the "polymerization-diversion-polymerization" method effectively ensures the efficient fusion of the leachate and precipitant. The overall process is similar to piston-squeezing fusion, piston-squeezing reflux, and piston-squeezing circulating sedimentation, achieving rapid overall fusion and precipitation of rare earth ore. The precipitate will settle below reaction tank 2 and enter the interior of sedimentation rack 414. Using the inclined pipe at the bottom of sedimentation rack 414, it will accumulate. Then, the operator can open the sealing cover 415, and the precipitate will flow out from the outlet. Of course, reaction tank 2 is also equipped with a discharge pipe. When the circulation reaches a certain level or time, the leachate inside reaction tank 2 is directly discharged through the discharge pipe, and then new leachate is injected again through the pipe, thus achieving efficient reciprocating circulating fusion and precipitation. The entire pusher plate 423 reciprocates at a relatively slow speed, so its movement will not stir up the internal precipitate.

[0044] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A continuous impurity removal and precipitation device for ion-type rare earth ore leaching solution, characterized in that: include Fixture (1); The reaction chamber (2) is used to provide a fusion space for rare earth ore leaching solution and precipitant; Precipitation mechanism (4) is used to improve the fusion efficiency of rare earth ore and precipitant and to accelerate ion precipitation; A driving component is used to drive the operation of the sedimentation mechanism (4); The sedimentation mechanism (4) includes a liquid dispensing component and a liquid adding component; The reaction chamber (2) is divided into three regions: region one is the piston chamber (411), region two is the fusion chamber (405), and region three is the extrusion chamber (402). The liquid distribution component includes multiple liquid distribution pipes (3). One end of the liquid distribution pipe (3) is connected to the extrusion chamber (402), and the other end of the liquid distribution pipe (3) is connected to the fusion chamber (405). An inlet is provided on the reaction tank (2) above the fusion chamber (405) for replenishing the rare earth mineral leaching solution consumed inside the reaction tank (2).

2. The device for continuous impurity removal and precipitation of ion-type rare earth ore leaching solution according to claim 1, characterized in that: The driving component includes a driving motor, which is connected to a driving shaft (401) via a transmission component (5). The driving shaft (401) is rotatably connected to the reaction chamber (2). A circulation pushing component is provided on the driving shaft (401). The circulation pushing component is used to push the leachate in the extrusion chamber (402) back from the inside of multiple liquid distribution pipes (3) to the inside of the fusion chamber (405), so as to realize the convergence of the diverted liquids in the fusion chamber.

3. The device for continuous impurity removal and precipitation of ion-type rare earth ore leaching solution according to claim 2, characterized in that: The circulating pusher includes a piston plate (412), which is slidably connected inside the piston chamber (411). A sliding sleeve (413) is connected to the piston plate (412). A rotary groove (410) is provided on the drive shaft (401) inside the piston chamber (411). A sliding pin is fixedly connected inside the sliding sleeve (413). The sliding pin is slidably connected to the rotary groove (410). Two guide rods (409) are connected to the piston plate (412). A push plate (423) is connected to the right end of the guide rod (409). The push plate (423) is slidably connected inside the extrusion chamber (402). A one-way valve (424) is provided on both the push plate (423) and the piston plate (412).

4. The device for continuous impurity removal and precipitation of ion-type rare earth ore leaching solution according to claim 3, characterized in that: The bottom of the push plate (423) is slidably connected to a sliding plate (403), the sliding plate (403) is fixedly connected to the inside of the reaction tank (2), a sedimentation chamber (404) is provided between the sliding plate (403) and the reaction tank (2), a sleeve shaft (426) is connected to the side of the push plate (423), and a sleeve (425) is slidably connected to the surface of the sleeve shaft (426).

5. The device for continuous impurity removal and precipitation of ionic rare earth ore leaching solution according to claim 4, characterized in that: The reaction chamber (2) is connected to a connecting piece (407) and a dividing plate (408) respectively. The dividing plate (408) is connected to the sleeve (425). An impeller (406) is connected to the drive shaft (401) inside the fusion chamber (405). The dividing plate (408) is provided with a cleaning port (422).

6. The device for continuous impurity removal and precipitation of ion-type rare earth ore leaching solution according to claim 5, characterized in that: The liquid adding part comprises an additional pipe (417), a connecting pipe (419) is communicated on the additional pipe (417), the connecting pipe (419) is connected in an externally connected precipitator tank through a pipeline, a top plug (418) is slidably connected in the additional pipe (417), a top rod (416) is connected to the left side of the top plug (418), the top rod (416) is connected with a piston sheet (412), a guide hole (420) is formed in the additional pipe (417), the guide hole (420) is communicated with a connecting sheet (407), and a liquid discharge port (421) is formed in the impeller (406).

7. The device for continuous impurity removal and precipitation of ionic rare earth ore leaching solution according to claim 6, characterized in that: The inside of the driving shaft (401) is provided with a flow channel, the guide hole (420), the connecting sheet (407), the driving shaft (401) and the liquid discharge port (421) form a flow loop, which is used for quantitatively extruding and discharging a precipitator, and the top plug (418) is provided with a one-way hole.

8. The device for continuous impurity removal and precipitation of ion-type rare earth ore leaching solution according to claim 6, characterized in that: The bottom of the reaction box (2) is connected with a precipitation rack (414), the precipitation rack (414) is communicated with a fusion cavity (405) and an extrusion cavity (402), and the right side of the precipitation rack (414) is threadedly connected with a sealing cover (415).

9. The device for continuous impurity removal and precipitation of ionic rare earth ore leaching solution according to claim 7, characterized in that: The liquid discharge port (421) is provided with multiple groups, and the multiple groups of liquid discharge ports (421) are circularly arranged with the center of the impeller (406) as an axis of symmetry.

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