Multistage mixed-settling extraction device for separating zirconium and hafnium

Abstract

The application relates to the technical field of zirconium-hafnium separation, and discloses a multistage mixed clarification extraction device for zirconium-hafnium separation, which comprises a bottom plate, a frame plate is fixedly connected to the top of the bottom plate, an extraction mechanism is arranged on the frame plate, and the extraction mechanism comprises a mixing tank and a clarification tank. Through the design of the extraction mechanism, the mixed liquid in the clarification tank is first subjected to high-speed rotation, then is subjected to separation through centrifugal force, and then is subjected to static clarification; finally, the control material plate is controlled to move downwards, the liquid in the upper layer flows out through the opening into the space outside the inner tank body of the clarification tank, the separated upper and lower layer liquids are further discharged through the first and second discharge pipes, and after a small amount of residual liquid is discharged at the end, the liquid can also be further clarified in the first or second discharge pipe, so that the residual liquid is finely separated and discharged, thereby avoiding the situation that the separation precision is reduced due to mutual mixing of a small amount of liquid in the two.

Description

Technical Field

[0001] This invention relates to the field of zirconium-hafnium separation technology, and in particular to a multi-stage mixing, clarification, and extraction apparatus for zirconium-hafnium separation. Background Technology

[0002] Hafnium is mainly used to make control rods for nuclear reactors. Pure hafnium is malleable, easy to process, and resistant to high temperatures and corrosion, making it an important material in the nuclear energy industry. In nature, hafnium often occurs in association with zirconium. All zirconium-containing minerals contain hafnium. Hafnium and zirconium are isomorphous, and hafnium is mainly found in zircon.

[0003] Patent publication CN119663015A discloses a zirconium-hafnium separation centrifugal extraction device, including a supporting base plate, a decomposition tank, and a separation tank. Fixed side plates are fixedly connected to both sides of the top of the supporting base plate, and a fixed top plate is fixedly connected to the top of each side plate. A drive motor is fixedly connected to the center of the top of the fixed top plate, and a rotating rod is fixedly connected to the drive end of the drive motor. The decomposition tank is sleeved on the outside of the rotating rod, and a fixed plate is fixedly connected to the outside of the rotating rod. A scraper is fixedly connected to the outside of the fixed plate, and the scraper abuts against the inner wall of the decomposition tank. A second motor is fixedly connected to the center of the top of the supporting base plate. With the decomposition tank, drive motor, crushing rod, and scraper, zirconium-hafnium raw materials are poured into the feed hopper and then flow into the decomposition tank. During the mixing process, the drive motor drives the rotating rod to rotate, and the crushing rod simultaneously completes the uniform decomposition.

[0004] The above devices achieve extraction and stratification by placing the mixture in centrifuge tubes and controlling the rotation of the centrifuge tubes during zirconium-hafnium separation. However, the overall structure of the centrifuge tubes is simple, and for the impurities that may be present in the stratified liquid, it can only be separated and discharged by slow pouring. This method is prone to causing the stratified solution to be discharged impure due to over-pouring or insufficient pouring, and the separation quality cannot be guaranteed. Therefore, a multi-stage mixing, clarification, and extraction device for zirconium-hafnium separation is proposed to solve the above problems. Summary of the Invention

[0005] To address the aforementioned problems, this invention provides a multi-stage mixing, clarification, and extraction apparatus for zirconium-hafnium separation.

[0006] The present invention provides a multi-stage mixing, clarification, and extraction device for zirconium-hafnium separation, which adopts the following technical solution: A multi-stage mixing, clarification and extraction device for zirconium-hafnium separation includes a base plate, a frame plate fixedly connected to the top of the base plate, and an extraction mechanism disposed on the frame plate. The extraction mechanism includes a mixing tank and a clarifying tank. The mixing tank is fixedly connected to the inner side of a frame plate, and the clarifying tank is located at the bottom of the mixing tank. A support frame is fixedly connected to the inner side of the frame plate, and the clarifying tank passes through the support frame and is rotatably connected to it. A discharge pipe is integrally formed at the bottom of the mixing tank, and a filter frame is fixedly connected to the bottom of the discharge pipe. An inlet pipe is connected to the bottom of the filter frame through a sealed bearing. One end of the inlet pipe is fixedly connected to the top of the clarifying tank. An inner tank body is fixedly connected inside the clarifying tank, and a through groove is formed on the inner tank body. A control plate is provided at the top of the clarifying tank, and the control plate passes through the top wall of the clarifying tank and extends into the through groove. The control plate matches the through groove. A first discharge pipe is integrally formed at the bottom of the clarifying tank, and a second discharge pipe is integrally formed on the outer side of the clarifying tank.

[0007] By adopting the above technical solution, the zirconium and hafnium materials to be separated are injected into a mixing tank, and the materials are mixed and stirred with the added extract. After thorough mixing, the mixture is filtered through a filter frame and then further enters a clarification tank for static clarification. After clarification, the height of the opening is controlled by lowering the control plate. At this time, the upper liquid flows out through the opening into the space outside the inner tank of the clarification tank. Then, the separated upper and lower liquids are further discharged through the first and second discharge pipes. After a small amount of residual liquid is discharged, the liquid can also be further clarified in the first or second discharge pipe to finely discharge the residual liquid, so as to avoid the situation where a small amount of liquid is mixed between the two and the separation accuracy decreases.

[0008] Preferably, the control plate has an opening, the first discharge pipe is connected to the inner tank, the second discharge pipe is connected to the clarification tank, and a first solenoid valve is provided on both the first discharge pipe and the second discharge pipe.

[0009] By adopting the above technical solution, after the opening on the control plate is connected to the through groove, the upper liquid in the inner tank can be discharged through the opening.

[0010] Preferably, the top of the clarification tank is provided with a ring plate, which is located outside the control plate and fixedly connected to the control plate. A lifting plate is slidably connected to the inner side of the frame plate, and the ring plate is located inside the lifting plate and rotatably connected to the lifting plate. A first electric push rod is fixedly connected to the top of the support frame, and one end of the first electric push rod is fixedly connected to the bottom of the lifting plate.

[0011] By adopting the above technical solution, the first electric push rod moves the lifting plate up and down after it is activated.

[0012] Preferably, a horizontal plate is fixedly connected to the inner side of the frame plate, a first motor is fixedly connected to the top of the horizontal plate, a first gear is fixedly connected to the first motor through an output shaft, a second gear is fixedly connected to the outer side of the inlet pipe, the second gear is disposed on one side of the first gear, and the second gear meshes with the first gear.

[0013] By adopting the above technical solution, the rotation of the first gear drives the rotation of the second gear.

[0014] Preferably, a feeding hopper and a U-shaped plate are fixedly connected to the top of the mixing tank, the U-shaped plate is located in front of the feeding hopper, a rotating rod is rotatably connected inside the mixing tank, a stirring blade is fixedly connected to the outside of the rotating rod, the rotating rod extends out of the outside of the mixing tank, one end of the rotating rod is rotatably connected to the top wall of the U-shaped plate, and a second solenoid valve is provided on the discharge pipe.

[0015] By adopting the above technical solution, the rotating rod drives the stirring blade to rotate, which can mix and stir the materials inside the mixing tank.

[0016] Preferably, a second motor is fixedly connected to the top of the U-shaped plate, and a third gear is fixedly connected to the second motor through an output shaft. A fourth gear is fixedly connected to the outside of the rotating rod, and the third gear is located on one side of the fourth gear and meshes with the fourth gear.

[0017] By adopting the above technical solution, the rotation of the third gear drives the rotation of the fourth gear.

[0018] Preferably, the filter frame is provided with a filter assembly, the filter assembly includes a filter plate, the filter plate is fixedly connected to the inside of the filter frame, a cleaning plate is provided on the top of the filter plate, the cleaning plate is attached to the top of the filter plate, an auxiliary plate is fixedly connected to one side of the filter frame, a sealing door is provided on the other side wall of the filter frame, and a threaded rod is rotatably connected inside the filter frame, the threaded rod passing through the side wall of the cleaning plate and the auxiliary plate in sequence.

[0019] By adopting the above technical solution, after rotating the threaded rod, the threaded rod drives the cleaning plate to move, and the cleaning plate can push and clean the impurities on the filter plate during the movement.

[0020] Preferably, the sealing door is connected to the filter frame by a hinge, the threaded rod is connected to the cleaning plate by a thread, and the threaded rod is rotatably connected to one side wall of the auxiliary plate.

[0021] By adopting the above technical solution, impurities inside the filter frame can be cleaned out after opening the sealed door.

[0022] Preferably, a material injection mechanism is provided on one side of the frame plate. The material injection mechanism includes a storage tank, which is fixedly connected to the top of the base plate. The storage tank is located on one side of the frame plate, and a support plate is fixedly connected to one side of the frame plate. A material injection pipe is provided on one side of the frame plate, which penetrates the top wall of the support plate and is fixedly connected to the support plate. A suction pipe and a feeding pipe are fixedly connected to the bottom of the material injection pipe, respectively. One end of the suction pipe is fixedly connected to one side wall of the storage tank, and one end of the feeding pipe is fixedly connected to the top wall of the mixing tank. A one-way valve is provided on both the suction pipe and the feeding pipe.

[0023] By adopting the above technical solution, the storage tank is used to store the extract.

[0024] Preferably, a mounting plate is fixedly connected to the top of the support plate, and a second electric push rod is fixedly connected to the top wall of the mounting plate. The second electric push rod extends into the inside of the injection pipe, and a movable plug is fixedly connected to one end of the second electric push rod. The outer side of the movable plug contacts the inner wall of the injection pipe, and a feeding hopper is fixedly connected to the top of the storage tank.

[0025] By adopting the above technical solution, after the second electric push rod is working, it can push and pull the movable plug up and down, thereby drawing the extract into the injection tube and squeezing out the extract inside the injection tube.

[0026] In summary, the present invention has the following beneficial technical effects: 1. A multi-stage mixing, clarification, and extraction device for zirconium-hafnium separation, wherein, through the design of the extraction mechanism, the well-mixed liquid is first rotated at high speed in the clarification tank and separated by centrifugal force, then allowed to settle and clarify, and finally the control plate is moved down, and the liquid in the upper layer flows out through the opening into the space outside the inner tank of the clarification tank. The separated upper and lower layers of liquid are further discharged through the first and second discharge pipes. After a small amount of residual liquid is discharged, the liquid can also be further clarified in the first or second discharge pipe to finely separate and discharge the residual liquid, so as to avoid the situation where a small amount of liquid is mixed between the two and the separation accuracy decreases.

[0027] 2. A multi-stage mixing, clarification, and extraction device for zirconium-hafnium separation, through the design of the feeding mechanism, allows for flexible intake and extraction of the extractant from the storage tank by controlling the up-and-down movement of the movable plug in the feeding pipe under the action of a one-way valve. This enables precise control of the amount of extractant added according to the volume of zirconium-hafnium raw materials, which is beneficial to improving the working quality of zirconium-hafnium separation.

[0028] 3. A multi-stage mixing, clarification, and extraction device for zirconium-hafnium separation, wherein the filter plate in the filter frame filters impurities in the mixture through the design of the filter components. When the filter plate needs to be cleaned after filtration, the threaded rod is rotated, and the threaded rod drives the cleaning plate to scrape and clean the upper surface of the filter plate. This scrapes the impurities into the bottom space of the filter frame on the side of the sealing door. After opening the sealing door, the cleaned impurities can be cleaned out in one go, thus ensuring the filtration efficiency of the filter plate. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a cross-sectional view of the structure of the present invention; Figure 3 for Figure 2 Enlarged view of point A in the image; Figure 4 for Figure 2 Enlarged view of point B in the image; Figure 5 for Figure 2 Enlarged view of point C in the image; Figure 6 This is a cross-sectional view of the inner tank in this invention; Figure 7 This is a cross-sectional view of the filter frame in this invention.

[0030] Explanation of reference numerals in the attached drawings: 1. Base plate; 2. Frame plate; 3. Extraction mechanism; 31. Mixing tank; 32. Clarifying tank; 33. Support frame; 34. Discharge pipe; 35. Filter frame; 36. Inlet pipe; 37. Inner tank; 38. Through groove; 39. Material control plate; 391. First discharge pipe; 392. Second discharge pipe; 393. Opening; 394. First solenoid valve; 395. Ring plate; 396. Lifting plate; 397. First electric push rod; 398. Horizontal plate; 399. First motor; 381. First gear; 382. Second gear; 383. Feeding hopper; 384. Rotating rod; 385. Agitating blade; 386. Second solenoid valve; 387. Second motor; 388. Third gear; 389. Fourth gear; 4. Filter assembly; 41. Filter plate; 42. Cleaning plate; 43. Auxiliary plate; 44. Sealing door; 45. Threaded rod; 5. Injection mechanism; 51. Storage tank; 52. Support plate; 53. Injection pipe; 54. Suction pipe; 55. Feeding pipe; 56. Check valve; 57. Mounting plate; 58. Second electric push rod; 59. Movable plug; 591. Feeding hopper. Detailed Implementation

[0031] The following is in conjunction with the appendix Figure 1 -Appendix Figure 7 The present invention will be described in further detail below.

[0032] This invention discloses a multi-stage mixing, clarification, and extraction apparatus for zirconium-hafnium separation. (Refer to...) Figures 1-7 It includes a base plate 1, a frame plate 2 fixedly connected to the top of the base plate 1, and an extraction mechanism 3 provided on the frame plate 2; The extraction mechanism 3 includes a mixing tank 31 and a clarifying tank 32. The mixing tank 31 is fixedly connected to the inner side of the frame plate 2, and the clarifying tank 32 is located at the bottom of the mixing tank 31. A support frame 33 is fixedly connected to the inner side of the frame plate 2. The clarifying tank 32 passes through the support frame 33 and is rotatably connected to the support frame 33. An integrally formed discharge pipe 34 is formed at the bottom of the mixing tank 31. A filter frame 35 is fixedly connected to the bottom of the discharge pipe 34. An inlet pipe 36 is connected to the bottom of the filter frame 35 through a sealed bearing. One end of the inlet pipe 36 is fixedly connected to the top of the clarifying tank 32. An inner tank body 37 is fixedly connected inside the clarifying tank 32. A through groove 38 is opened on the inner tank body 37. A control plate 39 is provided on the top of the clarification tank 32, which penetrates the top wall of the clarification tank 32 and extends into the through groove 38. The control plate 39 matches the through groove 38. A first feed pipe 391 is integrally formed at the bottom of the clarification tank 32, and a second feed pipe 392 is integrally formed on the outside of the clarification tank 32. The zirconium-hafnium material to be separated is injected into the mixing tank 31, where it is mixed and stirred with the added extraction liquid. After thorough mixing, the mixture is filtered through the filter frame 35 and then further enters the clarification tank 32 for settling and clarification. The height of the opening 393 is controlled by lowering the control plate 39 after clarification. At this time, the upper liquid flows out through the opening 393 into the space outside the inner tank 37 of the clarification tank 32. Subsequently, the separated upper and lower liquids are discharged through the first discharge pipe 391 and the second discharge pipe 392. After a small amount of liquid remains at the end, the liquid can be further clarified in the first discharge pipe 391 or the second discharge pipe 392 to finely discharge the remaining liquid, so as to avoid the situation where a small amount of liquid is mixed between the two and the separation accuracy decreases.

[0033] An opening 393 is provided on the control plate 39. The first discharge pipe 391 is connected to the inner tank 37, and the second discharge pipe 392 is connected to the clarification tank 32. A first solenoid valve 394 is provided on both the first discharge pipe 391 and the second discharge pipe 392. After the opening 393 on the control plate 39 is connected to the through groove 38, the upper liquid in the inner tank can be discharged through the opening 393. A ring plate 395 is provided on the top of the clarification tank 32. The ring plate 395 is located on the outside of the control plate 39 and is fixedly connected to the control plate 39. A lifting plate 396 is slidably connected to the inner side of the frame plate 2. The ring plate 395 is located on the inner side of the lifting plate 396 and is rotatably connected to the lifting plate 396. A first electric push rod 397 is fixedly connected to the top of the support frame 33. One end of the first electric push rod 397 is fixedly connected to the bottom of the lifting plate 396. After the first electric push rod 397 is working, it will lift and push the lifting plate 396. A horizontal plate 398 is fixedly connected to the inner side of the frame plate 2. A first motor 399 is fixedly connected to the top of the horizontal plate 398. A first gear 381 is fixedly connected to the first motor 399 through the output shaft. A second gear 382 is fixedly connected to the outer side of the inlet pipe 36. The second gear 382 is located on one side of the first gear 381 and meshes with the first gear 381. After the first gear 381 rotates, it drives the second gear 382 to rotate.

[0034] A feeding hopper 383 and a U-shaped plate are fixedly connected to the top of the mixing tank 31. The U-shaped plate is located in front of the feeding hopper 383. A rotating rod 384 is rotatably connected inside the mixing tank 31. An agitator 385 is fixedly connected to the outside of the rotating rod 384. The rotating rod 384 extends out of the outside of the mixing tank 31. One end of the rotating rod 384 is rotatably connected to the top wall of the U-shaped plate. A second solenoid valve 386 is installed on the discharge pipe 34. After the rotating rod 384 rotates, it drives the agitator 385 to rotate, which can mix and stir the materials inside the mixing tank 31. A second motor 387 is fixedly connected to the top of the U-shaped plate. The second motor 387 is fixedly connected to a third gear 388 through an output shaft. A fourth gear 389 is fixedly connected to the outside of the rotating rod 384. The third gear 388 is located on one side of the fourth gear 389 and meshes with the fourth gear 389. After the third gear 388 rotates, it drives the fourth gear 389 to rotate.

[0035] A filter assembly 4 is provided on the filter frame 35. The filter assembly 4 includes a filter plate 41, which is fixedly connected to the inside of the filter frame 35. A cleaning plate 42 is provided on the top of the filter plate 41, and the cleaning plate 42 is attached to the top of the filter plate 41. An auxiliary plate 43 is fixedly connected to one side of the filter frame 35, and a sealing door 44 is provided on the other side wall of the filter frame 35. A threaded rod 45 is rotatably connected inside the filter frame 35. The threaded rod 45 passes through the side wall of the cleaning plate 42 and the auxiliary plate 43 in sequence. After rotating the threaded rod 45, the threaded rod 45 drives the cleaning plate 42 to move. During the movement of the cleaning plate 42, the impurities on the filter plate 41 can be pushed and cleaned. The sealing door 44 is connected to the filter frame 35 by a hinge, and the threaded rod 45 is connected to the cleaning plate 42 by a thread. The threaded rod 45 is rotatably connected to the side wall of the auxiliary plate 43. After opening the sealing door 44, the impurities inside the filter frame 35 can be cleaned out.

[0036] A material injection mechanism 5 is provided on one side of the frame plate 2. The material injection mechanism 5 includes a storage tank 51, which is fixedly connected to the top of the bottom plate 1. The storage tank 51 is located on one side of the frame plate 2. A support plate 52 is fixedly connected to one side of the frame plate 2. A material injection pipe 53 is provided on one side of the frame plate 2. The material injection pipe 53 passes through the top wall of the support plate 52 and is fixedly connected to the support plate 52. A suction pipe 54 and a feeding pipe 55 are fixedly connected to the bottom of the material injection pipe 53. One end of the suction pipe 54 is fixedly connected to one side wall of the storage tank 51, and one end of the feeding pipe 55 is fixedly connected to the top wall of the mixing tank 31. A one-way valve 56 is provided on both the suction pipe 54 and the feeding pipe 55. The storage tank 51 is used to store the extract. A mounting plate 57 is fixedly connected to the top of the support plate 52. A second electric push rod 58 is fixedly connected to the top wall of the mounting plate 57. The second electric push rod 58 extends into the inside of the injection tube 53. A movable plug 59 is fixedly connected to one end of the second electric push rod 58. The outer side of the movable plug 59 contacts the inner wall of the injection tube 53. A feeding hopper 591 is fixedly connected to the top of the storage tank 51. After the second electric push rod 58 is working, it can push and pull the movable plug 59 up and down, thereby drawing the extract into the injection tube 53 and squeezing out the extract inside the injection tube 53.

[0037] In actual operation, when this device is used, first connect the power supply to the device. The storage tank 51 is used to store the extract. The zirconium hafnium material is fed into the mixing tank 31 through the feeding hopper 383. When the second electric push rod 58 retracts, the second electric push rod 58 drives the movable plug 59 to move upward. At this time, the extract in the storage tank 51 can be sucked into the injection pipe 53 through the suction pipe 54. By controlling the upward distance of the movable plug 59, the volume of the sucked extract can be accurately controlled. When the set value is sucked in, the second electric push rod 58 extends. At this time, the movable plug 59 moves downward. Under the action of the one-way valve 56, the extract enters the mixing tank 31 through the feeding pipe 55. After the second motor 387 starts working, it drives the third gear 388 to rotate. The third gear 388 drives the fourth gear 389 to rotate. The fourth gear 389 drives the rotating rod 384 to rotate. The rotating rod 384 drives the stirring blade 385 to rotate, which mixes and stirs the material in the storage tank 51, so that the internal material can be fully mixed and reacted. When the stirring is sufficient, the second solenoid valve 386 is opened, and the mixed liquid is discharged downward. The discharged mixed liquid first enters the filter frame 35. The filter plate 41 in the filter frame 35 filters the impurities in the mixed liquid. When the filter plate 41 needs to be cleaned after filtration, the threaded rod 45 is rotated. The threaded rod 45 drives the cleaning plate 42 to scrape and clean the upper surface of the filter plate 41. In this way, the impurities can be scraped to the bottom space of the filter frame 35 towards the sealing door 44. After opening the sealing door 44, the cleaned impurities can be cleaned out in a unified manner, thus ensuring the filtration efficiency of the filter plate 41. The filtered mixture enters the clarifying tank 32. The clarifying tank 32, inner tank 37, first feed pipe 391, and second feed pipe 392 in this device are all made of transparent material, allowing the user to observe the internal processing. The first motor 399 operates, driving the first gear 381 to rotate. The first gear 381 drives the second gear 382 to rotate, which in turn drives the inlet pipe 36 to rotate. The inlet pipe 36 drives the clarifying tank 32 to rotate at high speed. The resulting centrifugal force promotes rapid separation of zirconium and hafnium. Rotation stops after separation is complete. Then, the liquid is allowed to stand and clarify. During this time, the different liquids containing zirconium and hafnium separate into layers. After the standing is completed, the first electric push rod 397 is activated and pulls the lifting plate 396 downward. The lifting plate 396 drives the ring plate 395 to move. The ring plate 395 drives the control plate 39 to move downward until the opening 393 moves into the through groove 38. The liquid in the upper layer of the inner tank 37 can be discharged through the opening 393 and enter the clarification tank 32. The height of the opening 393 can be adjusted based on the thickness of the upper liquid to accurately discharge the upper liquid into the clarification tank 32. Finally, after opening the first solenoid valve 394, the lower layer of liquid is discharged through the first feed pipe 391, while the upper layer of liquid is discharged through the second feed pipe 392. Before all liquid is discharged quickly, to avoid a small amount of mutual mixing between the upper and lower layers of liquid, the remaining small amount of upper and lower liquid can be further clarified in the first feed pipe 391 and the second feed pipe 392 respectively to promote their separation. After separation, the discharge flow rate is controlled and the remaining liquid is slowly discharged, and any liquids that have been separated and mixed are also discharged separately, thereby fully ensuring the separation quality and accuracy of zirconium-hafnium separation.

[0038] The above are all preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A multi-stage mixing, clarification, and extraction apparatus for zirconium-hafnium separation, characterized in that: Includes a base plate (1), a frame plate (2) is fixedly connected to the top of the base plate (1), and an extraction mechanism (3) is provided on the frame plate (2); The extraction mechanism (3) includes a mixing tank (31) and a clarification tank (32). The mixing tank (31) is fixedly connected to the inside of the frame plate (2). The clarification tank (32) is located at the bottom of the mixing tank (31). A support frame (33) is fixedly connected to the inside of the frame plate (2). The clarification tank (32) passes through the support frame (33) and is rotatably connected to the support frame (33). A discharge pipe (34) is integrally formed at the bottom of the mixing tank (31). A filter frame (35) is fixedly connected to the bottom of the discharge pipe (34). An inlet pipe (36) is connected to the bottom of the filter frame (35) through a sealed bearing. One end of the inlet pipe (36) is fixedly connected to the top of the clarification tank (32). An inner tank body (37) is fixedly connected inside the clarification tank (32). A through groove (38) is provided on the inner tank body (37). A control plate (39) is provided on the top of the clarification tank (32). The control plate (39) penetrates the top wall of the clarification tank (32) and extends into the through groove (38). The control plate (39) matches the through groove (38). A first discharge pipe (391) is integrally formed at the bottom of the clarification tank (32). A second discharge pipe (392) is integrally formed on the outside of the clarification tank (32). The top of the clarification tank (32) is provided with a ring plate (395), which is located outside the control plate (39) and fixedly connected to the control plate (39). The inner side of the frame plate (2) is slidably connected with a lifting plate (396), which is located inside the lifting plate (396) and rotatably connected to the lifting plate (396). The top of the support frame (33) is fixedly connected with a first electric push rod (397), one end of which is fixedly connected to the bottom of the lifting plate (396). A horizontal plate (398) is fixedly connected to the inner side of the frame plate (2). A first motor (399) is fixedly connected to the top of the horizontal plate (398). A first gear (381) is fixedly connected to the first motor (399) through the output shaft. A second gear (382) is fixedly connected to the outer side of the inlet pipe (36). The second gear (382) is located on one side of the first gear (381) and meshes with the first gear (381).

2. The multi-stage mixing, clarification, and extraction apparatus for zirconium-hafnium separation according to claim 1, characterized in that: The control plate (39) has an opening (393), the first discharge pipe (391) is connected to the inner tank (37), the second discharge pipe (392) is connected to the clarification tank (32), and a first solenoid valve (394) is provided on both the first discharge pipe (391) and the second discharge pipe (392).

3. The multi-stage mixing, clarification, and extraction apparatus for zirconium-hafnium separation according to claim 1, characterized in that: The mixing tank (31) is fixedly connected to the top of the feeding hopper (383) and the U-shaped plate. The U-shaped plate is located in front of the feeding hopper (383). The mixing tank (31) is rotatably connected to the inside of the mixing tank (31). The outside of the rotating rod (384) is fixedly connected to the stirring blade (385). The rotating rod (384) extends out of the outside of the mixing tank (31). One end of the rotating rod (384) is rotatably connected to the top wall of the U-shaped plate. The discharge pipe (34) is equipped with a second solenoid valve (386).

4. The multi-stage mixing, clarification, and extraction apparatus for zirconium-hafnium separation according to claim 3, characterized in that: A second motor (387) is fixedly connected to the top of the U-shaped plate. The second motor (387) is fixedly connected to a third gear (388) through an output shaft. A fourth gear (389) is fixedly connected to the outside of the rotating rod (384). The third gear (388) is located on one side of the fourth gear (389), and the third gear (388) meshes with the fourth gear (389).

5. The multi-stage mixing, clarification, and extraction apparatus for zirconium-hafnium separation according to claim 1, characterized in that: The filter frame (35) is provided with a filter assembly (4), the filter assembly (4) includes a filter plate (41), the filter plate (41) is fixedly connected to the inside of the filter frame (35), a cleaning plate (42) is provided on the top of the filter plate (41), the cleaning plate (42) is attached to the top of the filter plate (41), an auxiliary plate (43) is fixedly connected to one side of the filter frame (35), a sealing door (44) is provided on the other side wall of the filter frame (35), and a threaded rod (45) is rotatably connected inside the filter frame (35), the threaded rod (45) passes through the side wall of the cleaning plate (42) and the auxiliary plate (43) in sequence.

6. The multi-stage mixing, clarification, and extraction apparatus for zirconium-hafnium separation according to claim 5, characterized in that: The sealing door (44) is connected to the filter frame (35) by a hinge, the threaded rod (45) is connected to the cleaning plate (42) by a thread, and the threaded rod (45) is rotatably connected to one side wall of the auxiliary plate (43).

7. The multi-stage mixing, clarification, and extraction apparatus for zirconium-hafnium separation according to claim 1, characterized in that: A material injection mechanism (5) is provided on one side of the frame plate (2). The material injection mechanism (5) includes a storage tank (51). The storage tank (51) is fixedly connected to the top of the bottom plate (1). The storage tank (51) is located on one side of the frame plate (2). A support plate (52) is fixedly connected to one side of the frame plate (2). A material injection pipe (53) is provided on one side of the frame plate (2). The material injection pipe (53) penetrates the top wall of the support plate (52) and is fixedly connected to the support plate (52). A suction pipe (54) and a feeding pipe (55) are fixedly connected to the bottom of the material injection pipe (53). One end of the suction pipe (54) is fixedly connected to one side wall of the storage tank (51). One end of the feeding pipe (55) is fixedly connected to the top wall of the mixing tank (31). A one-way valve (56) is provided on both the suction pipe (54) and the feeding pipe (55).

8. A multi-stage mixing, clarification, and extraction apparatus for zirconium-hafnium separation according to claim 7, characterized in that: The top of the support plate (52) is fixedly connected to the mounting plate (57), and the top wall of the mounting plate (57) is fixedly connected to the second electric push rod (58). The second electric push rod (58) extends into the inside of the injection pipe (53). One end of the second electric push rod (58) is fixedly connected to the movable plug (59). The outer side of the movable plug (59) is in contact with the inner wall of the injection pipe (53). The top of the storage tank (51) is fixedly connected to the feeding hopper (591).

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