Device and method for separating zirconium and hafnium through solvent extraction method

Abstract

The invention belongs to the technical field of hydrometallurgy, particularly relates to a device and a method for separating zirconium and hafnium by a solvent extraction method, and aims to solve the problem that the purity of zirconium and hafnium precipitates is low due to the fact that an existing device is low in separation speed of the zirconium and hafnium precipitates and a zirconium and hafnium mixed solution. The separation box is located at the top of the fixed base; and the rectangular grooves are formed in the outer walls of the two sides of the separation box. According to the device and method for separating zirconium and hafnium through the solvent extraction method, during use, quick solid-liquid separation can be achieved on a zirconium and hafnium mixed solution, meanwhile, under the action of an isolation baffle, zirconium and hafnium precipitates can evenly fall on a filter plate, the separation module can adjust the spraying angle of a spraying pipe, and the separation efficiency is improved. The zirconium and hafnium precipitate and the zirconium and hafnium mixed solution can be better separated, impurities in the zirconium and hafnium mixed solution are prevented from being in contact with the zirconium and hafnium precipitate for a long time, and the purity of the zirconium and hafnium precipitate is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of hydrometallurgy, and particularly to a device and method for separating zirconium and hafnium by solvent extraction method. Background Art

[0002] Zirconium and hafnium occur naturally in symbiosis and belong to Group IVB elements in the periodic table of chemical elements. They have similar outer electron structures. Also, since hafnium follows the lanthanide series closely and is greatly affected by the lanthanide contraction, the atomic radii, ionic radii, and structures of zirconium and hafnium are very similar, resulting in extremely similar chemical properties. They are one of the most difficult element pairs to separate in the periodic table. Many studies on zirconium-hafnium separation methods have been conducted at home and abroad, mainly divided into pyrometallurgical separation and hydrometallurgical separation.

[0003] Zirconium and hafnium often exist in symbiotic minerals. In the separation of zirconium and hafnium, the precipitation properties of zirconium and hafnium hydroxides have certain differences. Adding sodium hydroxide can adjust the pH value of the solution to precipitate zirconium or hafnium in the form of hydroxide, thereby achieving the separation of the two. When the existing device is in use, it is impossible to quickly separate the obtained zirconium-hafnium precipitate from the mother liquor, and the impurities contained in the mother liquor contaminate the zirconium-hafnium precipitate, affecting the purity of the subsequent zirconium-hafnium precipitate. Summary of the Invention

[0004] The present invention discloses a device and method for separating zirconium and hafnium by solvent extraction method, aiming to solve the technical problem that the existing device in the background art has a slow separation speed of zirconium-hafnium precipitate and zirconium-hafnium mixed solution, resulting in low purity of the zirconium-hafnium precipitate.

[0005] A device for separating zirconium and hafnium by solvent extraction method proposed by the present invention includes a fixed base; a separation box, and the separation box is located on the top of the fixed base; Rectangular grooves are opened on the outer walls of both sides of the separation box; A filter plate, the outer wall of the filter plate is movably connected to the inner walls of the two rectangular grooves, and four corrugated plates are arranged on the outer wall of the filter plate. One side outer walls of the four corrugated plates are respectively fixedly connected to the inner walls of both sides of the two rectangular grooves; A separation module is arranged on the separation box. The separation module includes a partition baffle, and the separation module can quickly separate the solid and liquid of the zirconium-hafnium mixed solution; A vibration module, the vibration module includes two vibration motors symmetrically distributed, and the vibration module can keep the particles on the filter plate in a loose state to prevent particle accumulation from blocking the filter plate; An opening and closing module, the opening and closing module includes two sliding sealing plates symmetrically distributed, and the opening and closing module can prevent particulate matter from accumulating at the same position on the filter plate to cause blockage of the filter plate.

[0006] In a preferred embodiment, the separation module further includes a liquid storage tank fixedly connected to the top of the separation tank. One outer wall of the liquid storage tank is fixedly connected with a delivery pipe, on the outer wall of which a control valve is arranged, and the output end of the delivery pipe is provided with a connecting member. On both outer walls of the connecting member, there are diversion pipes respectively. On the outer walls of both diversion pipes, liquid extraction pumps are arranged respectively, and the output ends of both diversion pipes are provided with spray pipes. On the outer walls of both spray pipes, there are limiting groove plates respectively. On one outer wall of both limiting groove plates, limiting holes are formed respectively. Inside both limiting holes, there is a same shaft rod fixedly connected, and one end of the shaft rod is movably connected with one inner wall of the separation tank. On one outer wall of the separation tank, there is a general-purpose motor, and the output shaft of the general-purpose motor is fixedly connected with one outer wall of the shaft rod through a coupling.

[0007] In a preferred embodiment, on both outer walls of the separation tank, there are sliding grooves and square grooves respectively. At the bottom of the separation tank, there is a blanking hole, inside which a discharge pipe is fixedly connected. On the outer wall of the discharge pipe, a negative pressure pump is arranged, and on the filter plate, there are multiple filter holes. On one outer wall of the separation tank, there is a protective door.

[0008] In a preferred embodiment, the vibration module further includes two symmetrically distributed moving sliders and two limiting springs. The two moving sliders and the two limiting springs are respectively located inside the two sliding grooves. On the outside of both vibration motors, there are two fixed brackets respectively. The two fixed brackets are respectively fixedly connected to the outer walls of both sides of the separation tank and the isolation baffle. The output shafts of both vibration motors are connected with missing-tooth gears through couplings. One end of each of the two limiting springs is fixedly connected with one inner wall of each of the two sliding grooves respectively. One outer wall of each of the two moving sliders is fixedly connected with one outer wall of each side of the filter plate respectively. One end of each of the two limiting springs is fixedly connected with one outer wall of each of the two moving sliders respectively. On one outer wall of each of the two moving sliders, there is a moving sealing plate respectively. On one outer wall of each of the two moving sealing plates, there is a gear plate respectively, and the two gear plates are respectively engaged with the two missing-tooth gears.

[0009] In a preferred embodiment, the opening and closing module further includes two electric push rods respectively fixedly connected to one outer wall of the two sliding sealing plates. The two sliding sealing plates are both movably connected to the outer walls of both sides of the separation tank. One outer wall of each of the two sliding sealing plates is fixedly connected with one outer wall of each side of the filter plate respectively. On the output ends of both electric push rods, there are separation plates respectively. On both separation plates, there are multiple separation holes formed respectively. On both separation plates, there are rotating rods respectively, and on the outer walls of both separation plates, there are rubber sealing plates respectively. The two rotating rods and the two rubber sealing plates are respectively located inside the two square grooves.

[0010] A separation method for separating zirconium and hafnium by solvent extraction, using the device for separating zirconium and hafnium by solvent extraction as described above, includes the following steps: Step 1: Open the separation module, spray the zirconium-hafnium mixed solution into the interior of the separation box, and separate the zirconium-hafnium precipitate and the zirconium-hafnium mixed solution under the action of the filter plate. Step 2: Open the vibration module. Under the action of the vibration module, the zirconium-hafnium precipitate and the zirconium-hafnium mixed solution can be quickly separated, and at the same time, the zirconium-hafnium precipitate can be evenly distributed on the filter plate to accelerate the filtration speed. Step 3: After the separation is completed, open the opening and closing component, and the zirconium-hafnium precipitate can fall to the bottom of the filter plate.

[0011] Step 4: The separated zirconium-hafnium mixed solution falls to the bottom of the separation box. At the same time, open the protective door and the negative pressure pump to take out the zirconium-hafnium precipitate and the separated zirconium-hafnium mixed solution.

[0012] As can be seen from the above, the device for separating zirconium and hafnium by solvent extraction provided by the present invention can achieve rapid solid-liquid separation of the zirconium-hafnium mixed solution during use, improve the separation speed of the zirconium-hafnium precipitate and the zirconium-hafnium mixed solution. At the same time, under the action of the isolation baffle, the zirconium-hafnium precipitate can evenly fall on the filter plate, and the separation module can adjust the spraying angle of the spraying pipe, which is beneficial to better separate the zirconium-hafnium precipitate and the zirconium-hafnium mixed solution, avoiding the long-term contact between the impurities in the zirconium-hafnium mixed solution and the zirconium-hafnium precipitate, and improving the purity of the zirconium-hafnium precipitate. Brief Description of the Drawings

[0013] Figure 1 It is a schematic diagram of the overall structure of a device for separating zirconium and hafnium by solvent extraction proposed by the present invention; Figure 2 It is a right view of the overall structure of a device for separating zirconium and hafnium by solvent extraction proposed by the present invention; Figure 3 It is a schematic diagram of the structure of the separation module of a device for separating zirconium and hafnium by solvent extraction proposed by the present invention; Figure 4 It is a schematic diagram of the combined structure of the limit spring and the moving slider of a device for separating zirconium and hafnium by solvent extraction proposed by the present invention; Figure 5 It is a schematic diagram of the combined structure of the fixed bracket and the vibration motor of a device for separating zirconium and hafnium by solvent extraction proposed by the present invention; Figure 6 It is a schematic diagram of the combined structure of the sliding sealing plate and the electric push rod of a device for separating zirconium and hafnium by solvent extraction proposed by the present invention; Figure 7 It is a schematic diagram of the combined structure of the rubber sealing plate and the rotating rod of a device for separating zirconium and hafnium by solvent extraction proposed by the present invention.

[0014] In the figure: 1. Fixed base; 2. Separation box; 3. Vibration module; 301. Fixed bracket; 302. Moving slider; 303. Limit spring; 304. Vibration motor; 305. Toothless gear; 306. Gear plate; 307. Moving sealing plate; 4. Filter plate; 5. Rectangular groove; 6. Corrugated plate; 7. Separation module; 701. Liquid storage tank; 702. Delivery pipe; 703. Control valve; 704. Shunt pipe; 705. Connecting piece; 706. Liquid pumping pump; 707. Shaft rod member; 708. Universal motor; 709. Limit groove plate; 710. Spray pipe; 711. Isolation baffle; 8. Protection door; 9. Opening and closing module; 901. Sliding sealing plate; 902. Electric push rod; 903. Rubber sealing plate; 904. Separation plate; 905. Rotating rod; 906. Separation hole; 10. Negative pressure pump; 11. Discharge pipe; 12. Filter hole; 13. Sliding groove. Specific embodiments

[0015] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0016] The device for separating zirconium and hafnium by solvent extraction method disclosed in the present invention is mainly applied to the scenario where the existing device has a slow separation speed of zirconium and hafnium precipitates and zirconium and hafnium mixed solution, resulting in low purity of zirconium and hafnium precipitates.

[0017] Refer to Figures 1-7 , a device for separating zirconium and hafnium by solvent extraction method, including a fixed base 1; Separation box 2, the separation box 2 is located on the top of the fixed base 1; Rectangular groove 5, the rectangular groove 5 is opened on the outer walls of both sides of the separation box 2; Filter plate 4, the outer wall of the filter plate 4 is slidably connected to the inner walls of the two rectangular grooves 5, and four corrugated plates 6 are arranged on the outer wall of the filter plate 4, and one side outer walls of the four corrugated plates 6 are respectively fixedly connected to the inner walls of both sides of the two rectangular grooves 5; Separation module 7, the separation module 7 is arranged on the separation box 2, the separation module 7 includes an isolation baffle 711, and the separation module 7 can achieve rapid solid-liquid separation of the zirconium and hafnium mixed solution; Vibration module 3, the vibration module 3 includes two symmetrically distributed vibration motors 304, and the vibration module 3 can keep the particles on the filter plate 4 loose, preventing particle accumulation from blocking the filter plate 4; Opening and closing module 9, the opening and closing module 9 includes two symmetrically distributed sliding sealing plates 901, and the opening and closing module 9 can prevent particulate matter from accumulating at the same position on the filter plate 4, resulting in blockage of the filter plate 4.

[0018] Specifically, by providing a separation module 7, the separation module 7 can achieve rapid solid-liquid separation of the zirconium-hafnium mixed solution during use. Meanwhile, under the action of the isolation baffle 711, it is beneficial to better separate the zirconium-hafnium precipitate and the zirconium-hafnium mixed solution, avoiding the impurities in the zirconium-hafnium mixed solution from contacting the zirconium-hafnium precipitate for a long time and affecting the purity of the zirconium-hafnium precipitate. By providing a vibration module 3, when the vibration module 3 is in use, vibration helps to make the zirconium-hafnium precipitate more evenly distributed on the filter plate 4, avoiding local excessive accumulation and affecting the separation effect. By providing an opening and closing module 9, under the action of the separation plate 904, it can prevent the zirconium-hafnium precipitate from accumulating at the same position on the filter plate 4, avoiding blockage of the filter plate 4. At the same time, the opening and closing module 9 is conducive to the fall of the zirconium-hafnium precipitate, facilitating subsequent extraction work.

[0019] Referring Figures 1-3 , in a preferred embodiment, the separation module 7 further includes a liquid storage tank 701. The liquid storage tank 701 is fixedly connected to the top of the separation tank 2. The isolation baffle 711 is fixedly connected to the outer wall of one side of the filter plate 4. A delivery pipe 702 is fixedly connected to the outer wall of one side of the liquid storage tank 701. A control valve 703 is provided on the outer wall of the delivery pipe 702, and a connecting member 705 is provided at the output end of the delivery pipe 702. Shunt pipes 704 are provided on the outer walls of both sides of the connecting member 705. Liquid extraction pumps 706 are provided on the outer walls of both shunt pipes 704, and spray pipes 710 are provided at the output ends of both shunt pipes 704. Limiting groove plates 709 are provided on the outer walls of both spray pipes 710. Limiting holes are opened on the outer walls of one side of both limiting groove plates 709. The same shaft rod 707 is fixedly connected inside both limiting holes, and one end of the shaft rod 707 is rotatably connected to the inner wall of one side of the separation tank 2. A universal motor 708 is provided on the outer wall of one side of the separation tank 2, and the output shaft of the universal motor 708 is fixedly connected to the outer wall of one side of the shaft rod 707 through a coupling.

[0020] Specifically, turn on the universal motor 708. The universal motor 708 drives the shaft rod 707 to rotate. By rotating the shaft rod 707, the limiting groove plate 709 can be rotated. Under the action of the limiting groove plate 709, the angle of the spray pipe 710 can be adjusted. After the adjustment is completed, turn off the universal motor 708. At the same time, open the control valve 703 and the liquid extraction pump 706, extract the zirconium-hafnium mixed solution inside the liquid storage tank 701, flow it into the spray pipe 710 through the shunt pipe 704, and spray it out through the spray pipe 710. Under the action of the reaction force of the sprayed zirconium-hafnium mixed solution against the isolation baffle 711, the zirconium-hafnium precipitate can evenly fall on the filter plate 4; In a specific application scenario, the separation module 7 is applicable to the link of quickly separating the zirconium-hafnium mixed solution and the zirconium-hafnium precipitate. That is, by setting the separation module 7, when the separation module 7 is in use, it can achieve rapid solid-liquid separation of the zirconium-hafnium mixed solution. At the same time, under the action of the isolation baffle 711, the zirconium-hafnium precipitate can evenly fall on the filter plate 4, and the separation module 7 can adjust the ejection angle of the ejection pipe 710, which is beneficial to better separate the zirconium-hafnium precipitate and the zirconium-hafnium mixed solution, avoiding the impurities in the zirconium-hafnium mixed solution from contacting the zirconium-hafnium precipitate for a long time and affecting the purity of the zirconium-hafnium precipitate.

[0021] Referring to Figures 1-5 , in a preferred embodiment, sliding grooves 13 and square grooves are formed in the outer walls on both sides of the separation box 2, a blanking hole is formed in the bottom of the separation box 2, a discharge pipe 11 is fixedly connected inside the blanking hole, a negative pressure pump 10 is arranged on the outer wall of the discharge pipe 11, and a plurality of filter holes 12 are formed in the filter plate 4. A protective door 8 is arranged on the outer wall of one side of the separation box 2; the vibration module 3 further includes two symmetrically distributed moving sliders 302 and two limiting springs 303. The two moving sliders 302 and the two limiting springs 303 are respectively located inside the two sliding grooves 13, and two fixing brackets 301 are fixedly connected to the outside of the two vibration motors 304. The two fixing brackets 301 are respectively fixedly connected to the outer walls on both sides of the separation box 2, and the output shafts of the two vibration motors 304 are both connected with missing-tooth gears 305 through couplings; one ends of the two limiting springs 303 are respectively fixedly connected to the inner walls on one side of the two sliding grooves 13, one outer walls of the two moving sliders 302 are respectively fixedly connected to the outer walls on both sides of the filter plate 4, one ends of the two limiting springs 303 are respectively fixedly connected to the outer walls on one side of the two moving sliders 302, moving sealing plates 307 are fixedly connected to the outer walls on one side of the two moving sliders 302, gear plates 306 are fixedly connected to the outer walls on one side of the two moving sealing plates 307, and the two gear plates 306 are respectively engaged with the two missing-tooth gears 305.

[0022] Specifically, when the zirconium-hafnium precipitate falls onto the filter plate 4, the vibration motor 304 is started. The vibration motor 304 drives the missing-tooth gear 305 to rotate. Under the meshing action of the missing-tooth gear 305 and the gear plate 306, the moving sealing plate 307 and the moving slider 302 move in the sliding groove 13. When the missing-tooth gear 305 disengages from the gear plate 306, the moving slider 302 drives the moving sealing plate 307 to reset under the action of the limiting spring 303; In a specific application scenario, the vibration module 3 is applicable to the process of evenly distributing zirconium hafnium precipitates. That is, by setting up the vibration module 3, during use, under the action of the moving slider 302, the moving sealing plate 307, and the limiting spring 303, the filter plate 4 is driven to vibrate. The vibration helps to make the zirconium hafnium precipitates more evenly distributed on the filter plate 4, avoiding excessive local accumulation that may affect the separation effect. At the same time, through vibration, the zirconium hafnium precipitates and the zirconium hafnium mixed solution can be separated more quickly.

[0023] Referring to Figure 1 、 Figure 2 、 Figure 6 and Figure 7 In a preferred embodiment, the opening and closing module 9 further includes two electric push rods 906. The two electric push rods 906 are respectively fixedly connected to the outer walls of one side of the two sliding sealing plates 901. The two sliding sealing plates 901 are both slidably connected to the outer walls of both sides of the separation tank 2. The outer walls of one side of the two sliding sealing plates 901 are respectively fixedly connected to the outer walls of both sides of the filter plate 4. The output ends of the two electric push rods 902 are both provided with separation plates 904. A plurality of separation holes 906 are formed in both separation plates 904. Rotating rods 905 are provided on both separation plates 904, and rubber sealing plates 903 are provided on the outer walls of both separation plates 904. The two rotating rods 905 and the two rubber sealing plates 903 are respectively located inside the two square grooves.

[0024] Specifically, after the separation is completed, the electric push rod 902 is opened. Under the action of the electric push rod 902 and the rotating rod 905, the separation plate 904 rotates, and the zirconium hafnium deposits on one side of the separation plate 904 can fall to the bottom of the filter plate 4, facilitating subsequent removal.

[0025] In a specific application scenario, the opening and closing module 9 is applicable to the process of the zirconium hafnium precipitates falling. That is, by setting up the opening and closing module 9, under the action of the separation plate 904, it is possible to prevent the zirconium hafnium precipitates from accumulating at the same position on the filter plate 4, avoiding blockage of the filter plate 4. At the same time, the opening and closing module 9 is conducive to the falling of the zirconium hafnium precipitates, facilitating subsequent removal work.

[0026] A separation method for separating zirconium and hafnium by solvent extraction, using the device for separating zirconium and hafnium by solvent extraction as described above, includes the following steps: Step 1: Turn on the universal motor 708. The universal motor 708 drives the shaft rod 707 to rotate. By rotating the shaft rod 707, the limit groove plate 709 can be rotated. Under the action of the limit groove plate 709, the spraying pipe 710 can be adjusted in angle. After the adjustment is completed, turn off the universal motor 708. At the same time, open the control valve 703 and the liquid extraction pump 706 to extract the zirconium-hafnium mixed solution inside the liquid storage tank 701, and flow it into the spraying pipe 710 through the shunt pipe 704 and spray it out through the spraying pipe 710. Under the action of the reaction force of the isolation baffle 711, the zirconium-hafnium precipitate can evenly fall on the filter plate 4; Step 2: When the zirconium-hafnium precipitate falls onto the filter plate 4, start the vibration motor 304. The vibration motor 304 drives the missing-tooth gear 305 to rotate. Under the meshing action of the missing-tooth gear 305 and the gear plate 306, the moving sealing plate 307 and the moving slider 302 move in the sliding groove 13. When the missing-tooth gear 305 disengages from the gear plate 306, under the action of the limit spring 303, the moving slider 302 drives the moving sealing plate 307 to reset; Step 3: After the separation is completed, open the electric push rod 902. Under the action of the electric push rod 902 and the rotating rod 905, the separation plate 904 rotates, and the zirconium-hafnium deposit on one side of the separation plate 904 can fall to the bottom of the filter plate 4 for subsequent removal; Step 4: The separated zirconium-hafnium mixed solution falls to the bottom of the separation tank 2. At the same time, open the protective door 8 and the negative pressure pump 10 to take out the zirconium-hafnium precipitate and the separated zirconium-hafnium mixed solution.

[0027] The above is only the preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered within the protection scope of the present invention.

Claims

1. An apparatus for separating zirconium and hafnium by solvent extraction method, characterized in that, It includes a fixed base (1); A separation box (2), and the separation box (2) is located on the top of the fixed base (1); Rectangular grooves (5), and the rectangular grooves (5) are opened on the outer walls on both sides of the separation box (2); A filter plate (4), the outer wall of the filter plate (4) is movably connected to the inner walls of the two rectangular grooves (5), and four corrugated plates (6) are arranged on the outer wall of the filter plate (4), and one side outer walls of the four corrugated plates (6) are respectively fixedly connected to the inner walls on both sides of the two rectangular grooves (5); A separation module (7), the separation module (7) is arranged on the separation box (2), the separation module (7) includes an isolation baffle (711), and the separation module (7) can achieve rapid solid-liquid separation of the zirconium-hafnium mixed solution; A vibration module (3), the vibration module (3) includes two symmetrically distributed vibration motors (304), and the vibration module (3) can keep the particles on the filter plate (4) in a loose state to prevent particle accumulation from blocking the filter plate (4); An opening and closing module (9), the opening and closing module (9) includes two symmetrically distributed sliding sealing plates (901), and the opening and closing module (9) can prevent particulate matter from accumulating at the same position on the filter plate (4) and causing blockage of the filter plate (4).

2. The device for separating zirconium and hafnium by solvent extraction method according to claim 1, characterized in that, The separation module (7) further includes a liquid storage tank (701), the liquid storage tank (701) is fixedly connected to the top of the separation box (2), the isolation baffle (711) is fixedly connected to one side outer wall of the filter plate (4), a delivery pipe (702) is fixedly connected to one side outer wall of the liquid storage tank (701), a control valve (703) is arranged on the outer wall of the delivery pipe (702), and a connecting member (705) is arranged at the output end of the delivery pipe (702).

3. The device for separating zirconium and hafnium by solvent extraction method according to claim 2, characterized in that, Shunt pipes (704) are arranged on both outer walls of the connecting member (705), liquid extraction pumps (706) are arranged on the outer walls of the two shunt pipes (704), and spray pipes (710) are arranged at the output ends of the two shunt pipes (704).

4. The device for separating zirconium and hafnium by solvent extraction method according to claim 3, characterized in that, Limit groove plates (709) are arranged on the outer walls of the two spray pipes (710), limit holes are opened on one side outer walls of the two limit groove plates (709), the same shaft rod (707) is fixedly connected inside the two limit holes, and one end of the shaft rod (707) is movably connected to one side inner wall of the separation box (2).

5. The device for separating zirconium and hafnium by solvent extraction method according to claim 4, characterized in that, A universal motor (708) is arranged on one side outer wall of the separation box (2), and the output shaft of the universal motor (708) is fixedly connected to one side outer wall of the shaft rod (707) through a coupling.

6. The apparatus for separating zirconium and hafnium by solvent extraction method according to claim 5, wherein, Sliding grooves (13) and square grooves are opened on both outer walls of the separation box (2), a blanking hole is opened at the bottom of the separation box (2), a discharge pipe (11) is fixedly connected inside the blanking hole, a negative pressure pump (10) is arranged on the outer wall of the discharge pipe (11), a plurality of filter holes (12) are opened on the filter plate (4), and a protective door (8) is arranged on one side outer wall of the separation box (2).

7. The apparatus for separating zirconium and hafnium by solvent extraction method according to claim 6, characterized in that, The vibration module (3) further includes two moving sliders (302) and two limiting springs (303) that are symmetrically distributed. The two moving sliders (302) and the two limiting springs (303) are respectively located inside the two sliding grooves (13). Both outer sides of the two vibration motors (304) are fixedly connected with two fixed brackets (301). The two fixed brackets (301) are respectively fixedly connected to the outer walls on both sides of the separation box (2). The output shafts of the two vibration motors (304) are both connected with missing-tooth gears (305) through couplings.

8. The apparatus for separating zirconium and hafnium by solvent extraction method according to claim 7, characterized in that, One end of each of the two limiting springs (303) is fixedly connected to one inner wall of each of the two sliding grooves (13). One outer wall of each of the two moving sliders (302) is fixedly connected to the outer walls on both sides of the filter plate (4). One end of each of the two limiting springs (303) is fixedly connected to one outer wall of each of the two moving sliders (302). One outer wall of each of the two moving sliders (302) is fixedly connected with a moving sealing plate (307). One outer wall of each of the two moving sealing plates (307) is fixedly connected with a gear plate (306). The two gear plates (306) are respectively meshed with the two missing-tooth gears (305).

9. The device for separating zirconium and hafnium by solvent extraction method according to claim 8, characterized in that, The opening and closing module (9) further includes two electric push rods (906). The two electric push rods (906) are respectively fixedly connected to one outer wall of each of the two sliding sealing plates (901). The two sliding sealing plates (901) are both movably connected to the outer walls on both sides of the separation box (2). One outer wall of each of the two sliding sealing plates (901) is fixedly connected to the outer walls on both sides of the filter plate (4). The output ends of the two electric push rods (902) are both provided with separation plates (904). A plurality of separation holes (906) are formed in each of the two separation plates (904). A rotating rod (905) is provided on each of the two separation plates (904). A rubber sealing plate (903) is provided on the outer wall of each of the two separation plates (904). The two rotating rods (905) and the two rubber sealing plates (903) are respectively located inside the two square grooves.

10. A separation method for separating zirconium and hafnium by solvent extraction, using the apparatus for separating zirconium and hafnium by solvent extraction as described in claim 9, characterized in that, It includes the following steps: Step 1: Open the separation module (7), spray the zirconium-hafnium mixed solution into the separation box (2), and separate the zirconium-hafnium precipitate and the zirconium-hafnium mixed solution under the action of the filter plate (4). Step 2: Open the vibration module (3). Under the action of the vibration module (3), the zirconium-hafnium precipitate and the zirconium-hafnium mixed solution can be quickly separated, and at the same time, the zirconium-hafnium precipitate can be evenly distributed on the filter plate (4) to accelerate the filtration speed. Step 3: After the separation is completed, open the opening and closing assembly (9), and the zirconium-hafnium precipitate can fall to the bottom of the filter plate (4). Step 4: The separated zirconium-hafnium mixed solution falls to the bottom of the separation box (2). At the same time, open the protective door (8) and the negative pressure pump (10) to take out the zirconium-hafnium precipitate and the separated zirconium-hafnium mixed solution.

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