Rubidium and cesium extraction and separation device and recovery method

Abstract

The invention discloses a rubidium and cesium extraction and separation device and a recovery method, and relates to the technical field of rubidium and cesium extraction.The rubidium and cesium extraction and separation device comprises a tank body, the top end of the tank body is fixedly connected with a top cover, the bottom end of the top cover is fixedly connected with a fixing plate, the fixing plate is fixedly connected with a fixing column, and the bottom end of the fixing column is fixedly connected with a fixing frame fixedly connected with the tank body; the outer side face of the fixing column is sleeved with a sliding sleeve, the outer side of the sliding sleeve is fixedly connected with a connecting sleeve, the top end of the connecting sleeve is fixedly connected with a floating plate, the bottom end of the connecting sleeve is fixedly connected with a floating disc, an air bag is fixedly connected between the floating plate and the floating disc, and multiple sets of liquid outlet pieces are installed on the floating disc. According to the device, the air bag filled with the extraction solution is arranged in the tank body, and the solvent in the air bag is uniformly conveyed into the tank body to be mixed with the rubidium-cesium solution under the action of the liquid outlet piece, so that the problem of low extraction efficiency caused by low mixing efficiency of the extraction solvent and the rubidium-cesium solution in the prior art is solved.

Description

Technical Field

[0001] The invention relates to the technical field of rubidium-cesium extraction, in particular to a rubidium-cesium extraction and separation device and a recovery method. Background Art

[0002] my country has abundant rubidium and cesium resources, which are mainly stored in ores such as cesium garnet and lepidolite and salt lake brine. Rubidium and cesium have a wide range of uses. Because of their excellent ductility, electrical conductivity and thermal conductivity and unique photoelectric effect, they have been applied in various fields such as electronic instruments, medicine, chemical industry, and new energy. Rubidium, cesium, lithium, potassium, sodium and other elements are usually together, so it is difficult to extract and separate rubidium and cesium.

[0003] At present, the commonly used rubidium-cesium extraction and separation methods include solvent extraction, ion exchange, precipitation, etc. Among them, solvent extraction is usually carried out at room temperature or lower temperature, with low energy consumption, especially suitable for the separation of heat-sensitive substances, and easy to achieve large-scale continuous production. In recent years, solvent extraction is a new method that is widely used, studied and developed rapidly. In the process of rubidium-cesium extraction by solvent, the solvent needs to be dripped into the tank body and mixed with the rubidium-cesium mixed solution. The extraction solvent in the prior art is generally directly transported to the tank body, and then stirred with the action of the stirring device. Since the extraction solvent is directly transported to the tank body, the traditional stirring cannot quickly mix the directly transported extraction solvent with the rubidium-cesium mixed solution, resulting in a low mixing efficiency of the solvent and the rubidium-cesium extraction mixed solution. To this end, we propose a rubidium-cesium extraction and separation device and a recovery method. Summary of the invention

[0004] The object of the present invention is to provide a rubidium-cesium extraction and separation device and a recovery method to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical scheme: a rubidium-cesium extraction and separation device, comprising a tank body, the bottom end of the tank body is connected to a discharge pipe, the top end of the tank body is fixedly connected to a top cover, the bottom end of the top cover is fixedly connected to a fixing plate, the fixing plate is fixedly connected to a fixing column, the bottom end of the fixing column is fixedly connected to a fixing frame fixedly connected to the tank body, a plurality of groups of notches are opened on the fixing frame, and the outer side surface of the fixing column is sleeved with a sliding sleeve, the outer side of the sliding sleeve is fixedly connected to a connecting sleeve, the top end of the connecting sleeve is fixedly connected to a floating plate, and the bottom end of the connecting sleeve is fixedly connected to a floating disk, an air bag is fixedly connected between the floating plate and the floating disk, multiple groups of liquid discharge parts are installed on the floating disk, and the top end of the floating plate and the bottom end of the floating disk are both fixedly connected to a first magnet, the fixing plate and the fixing frame are both fixedly connected to a second magnet, and the top end of the top cover is installed with an infusion part for conveying a solution into the air bag.

[0006] Preferably, the liquid outlet component includes a fixed tube fixedly connected to the floating plate, a plurality of first liquid outlet holes are provided on the fixed tube, a rotating tube is rotatably connected inside the fixed tube, a plurality of groups of second liquid outlet holes are provided on the rotating tube, and the positions of the second liquid outlet holes and the first liquid outlet holes are arranged corresponding to each other, and a rotating component for driving the rotating tube to rotate is installed at the end of the rotating tube, one end of the rotating tube passes through the floating plate, and a liquid inlet is provided at one end of the rotating tube located inside the airbag, and the liquid inlet is communicated with the plurality of groups of second liquid outlet holes.

[0007] Preferably, the rotating member includes a flat gear fixedly connected to the rotating tube, a rack is meshed on the outer side of the flat gear, a connecting block is fixedly connected to the rack, a sliding column slidably connected to the floating plate and the floating disk is fixedly connected to the connecting block, and the upper and lower ends of the sliding column respectively pass through the floating plate and the floating disk, the bottom end of the sliding column is fixedly connected to a support plate, and the bottom end of the support plate is equipped with a pushing block fixedly connected to the fixed frame.

[0008] Preferably, the infusion component includes multiple groups of infusion tubes installed on the top cover, the multiple groups of infusion tubes are connected by a collecting tube, the top of the collecting tube is connected to a material tank, and the positions of the multiple groups of infusion tubes correspond to the positions of the multiple groups of sliding columns, and a connecting component is installed between the sliding column and the infusion tubes.

[0009] Preferably, the connecting piece includes a fixed block fixed in the infusion tube, the fixed block is provided with a plurality of through holes, the fixed block is also fixedly connected with a top column, the bottom end of the top column is connected with a sealing member installed in the sliding column, a cavity is provided at the top end of the sliding column, the sealing member is installed inside the cavity, and an infusion hole is provided at the bottom end of the cavity, the infusion hole is connected with the outer wall of the sliding column, and the infusion hole is located inside the airbag.

[0010] Preferably, the sealing member comprises a connecting plate installed in the cavity, the connecting plate being provided with a plurality of groups of leakage holes, and the connecting plate being slidably connected with a connecting column, the connecting column being used in conjunction with a top column, a sealing plate being fixedly connected to the connecting column, the outer side surface of the sealing plate being movably connected with a sealing ring fixedly connected to the sliding column, and a spring being fixedly connected between the sealing plate and the connecting plate.

[0011] Preferably, a ball bearing which is slidably connected to the fixed column is rotatably connected in the sliding sleeve, and a spiral groove which is matched with the ball bearing is formed on the fixed column.

[0012] Preferably, sealing gaskets are installed on the top end of the sliding column and the bottom end of the infusion tube.

[0013] Preferably, a stirring blade is fixedly connected to the outer side surface of the fixed tube.

[0014] A method for recovering a rubidium-cesium extraction and separation device comprises the following steps:

[0015] S1: The alkali content of the solution containing rubidium and cesium potassium is adjusted to 0.8-1.0 mol / L in one step;

[0016] S2: The dissolved liquid after alkali adjustment enters the extraction and separation process of cesium and rubidium, and the extractant is 0.5-1.5 mol / L t-BAMBP and 260# solvent oil;

[0017] S3: The cesium-loaded saturated organic phase is washed with deionized water to remove the rubidium in the organic phase;

[0018] S4: after washing rubidium, the organic phase is stripped to obtain a cesium stripping solution, thereby achieving separation of cesium and rubidium;

[0019] S5: The cesium extraction residue is subjected to rubidium potassium extraction and separation, and after rubidium extraction, potassium washing, and stripping operations, a rubidium stripping solution is obtained to achieve rubidium potassium separation.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The present invention provides an air bag filled with an extraction solution in a tank body, and transports the extraction solution into the air bag through the action of an infusion piece. During the transportation process, the air bag and the solvent will sink to the bottom of the tank body after the gravity reaches a certain level. After the air bag sinks to the bottom of the tank body, the solvent in the air bag is uniformly transported to the tank body through the action of a liquid outlet piece to mix with a rubidium-cesium solution. The mixed solution can be stirred by the action of a ball bearing and a spiral groove, thereby improving the mixing efficiency of the extraction solvent and the rubidium-cesium solution, thereby solving the problem of low extraction efficiency caused by low mixing efficiency of the extraction solvent and the rubidium-cesium solution in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 It is a schematic diagram of the cross-sectional structure of the present invention;

[0024] Figure 3 It is a structural schematic diagram of the airbag of the present invention;

[0025] Figure 4 It is a schematic diagram of the connection between the air bag, the floating plate and the floating disk of the present invention;

[0026] Figure 5 This is a schematic diagram of the connection between the liquid outlet, the air bag and the floating plate of the present invention;

[0027] Figure 6 For the present invention Figure 5 Schematic diagram of the structure of the middle A area;

[0028] Figure 7 This is a schematic diagram of the connection between the fixed tube and the rotating tube of the present invention;

[0029] Figure 8 It is a partial schematic diagram of the infusion device of the present invention;

[0030] Fig. 9 For the present invention Figure 8 Schematic diagram of the structure of the middle B area;

[0031] Fig.10 This is a schematic diagram of the docking structure of the sliding column and the infusion tube of the present invention;

[0032] Fig.11 It is a schematic diagram of the structure of the connecting piece of the present invention;

[0033] Fig.12 For the present invention Fig.11 Schematic diagram of the structure of the middle C area;

[0034] Fig.13 It is a schematic diagram of the connection structure between the sliding sleeve and the fixed column of the present invention.

[0035] In the figure: 1-tank body; 2-discharging pipe; 3-top cover; 4-fixed plate; 5-fixed column; 6-fixed frame; 7-notch; 8-sliding sleeve; 9-connecting sleeve; 10-floating plate; 11-floating plate; 12-air bag; 13-liquid outlet; 14-first magnet; 15-second magnet; 16-infusion part; 17-fixed tube; 18-first liquid outlet hole; 19-rotating tube; 20-second liquid outlet hole; 21-rotating part; 22-flat gear; 23-rack; 24-connecting Connecting block; 25-sliding column; 26-supporting plate; 27-pushing block; 28-infusion tube; 29-collecting tube; 30-material tank; 31-connecting piece; 32-fixing block; 33-through hole; 34-pushing column; 35-sealing piece; 36-cavity; 37-infusion hole; 38-connecting plate; 39-leakage hole; 40-connecting column; 41-sealing plate; 42-sealing ring; 43-spring; 44-sealing pad; 45-stirring blade; 46-ball; 47-spiral groove. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] See also Figure 1-13The present invention provides a technical solution: a rubidium-cesium extraction and separation device, comprising a tank body 1, the bottom end of the tank body 1 is connected to a discharge pipe 2, the top of the tank body 1 is fixedly connected to a top cover 3, the bottom end of the top cover 3 is fixedly connected to a fixing plate 4, the fixing plate 4 is fixedly connected to a fixing column 5, the bottom end of the fixing column 5 is fixedly connected to a fixing frame 6 fixedly connected to the tank body 1, the fixing frame 6 is provided with a plurality of groups of notches 7, and the outer side surface of the fixing column 5 is sleeved with a sliding sleeve 8, the outer side of the sliding sleeve 8 is fixedly connected to a connecting sleeve 9, the top of the connecting sleeve 9 is fixedly connected to the bottom of the fixing column 5, and the fixing frame 6 is fixedly connected to the tank body 1. The connecting sleeve 9 is fixedly connected with a floating plate 10, and the bottom end of the connecting sleeve 9 is fixedly connected with a floating plate 11, an air bag 12 is fixedly connected between the floating plate 10 and the floating plate 11, and multiple groups of liquid outlets 13 are installed on the floating plate 11, and the top of the floating plate 10 and the bottom end of the floating plate 11 are fixedly connected with a first magnet 14, and the fixed plate 4 and the fixed frame 6 are fixedly connected with a second magnet 15, and the top of the top cover 3 is installed with an infusion piece 16 for transporting a solution into the air bag 12; the liquid outlet 13 includes a fixed tube 17 fixedly connected to the floating plate 11, and the liquid outlet 13 includes a fixed tube 17 fixedly connected to the floating plate 11. The fixed tube 17 is provided with a plurality of first liquid outlet holes 18, a rotating tube 19 is rotatably connected in the fixed tube 17, the rotating tube 19 is provided with a plurality of groups of second liquid outlet holes 20, and the second liquid outlet holes 20 are arranged corresponding to the positions of the first liquid outlet holes 18, and a rotating member 21 for driving the rotating tube 19 to rotate is installed at the end of the rotating tube 19, one end of the rotating tube 19 passes through the floating plate 11, and one end of the rotating tube 19 located inside the airbag 12 is provided with a liquid inlet, which is communicated with the plurality of groups of second liquid outlet holes 20; the rotating member 21 includes a rotating member connected to the rotating tube 19, and a rotating member 21 is provided at the end of the rotating tube 19. 19 is a flat gear 22 fixedly connected, a rack 23 is meshed on the outer side of the flat gear 22, a connecting block 24 is fixedly connected to the rack 23, a sliding column 25 slidably connected to the floating plate 10 and the floating disk 11 is fixedly connected to the connecting block 24, and the upper and lower ends of the sliding column 25 respectively penetrate the floating plate 10 and the floating disk 11, the bottom end of the sliding column 25 is fixedly connected to a supporting plate 26, the bottom end of the supporting plate 26 is installed with a pushing block 27 fixedly connected to the fixed frame 6, and the outer side surface of the fixed tube 17 is fixedly connected to a stirring blade 45.

[0038] The infusion component 16 includes a plurality of infusion tubes 28 installed on the top cover 3, and a collection tube 29 is connected between the plurality of infusion tubes 28. The top of the collection tube 29 is connected to a material tank 30, and the plurality of infusion tubes 28 correspond to the positions of the plurality of sliding columns 25. A connecting piece 31 is installed between the sliding column 25 and the infusion tube 28; the connecting piece 31 includes a fixed block 32 fixed in the infusion tube 28, and a plurality of through holes 33 are provided on the fixed block 32. A top column 34 is also fixedly connected to the fixed block 32, and a sealing piece 35 installed in the sliding column 25 is connected to the bottom end of the top column 34. A cavity 36 is provided at the top position of the sliding column 25, and the sealing piece 35 is installed inside the cavity 36. An infusion hole 37 is provided on the sliding column 25 at the bottom end of the cavity 36, the infusion hole 37 is communicated with the outer wall of the sliding column 25, and the infusion hole 37 is located inside the airbag 12; the sealing member 35 includes a connecting piece 38 installed in the cavity 36, the connecting piece 38 is provided with a plurality of groups of leakage holes 39, and a connecting column 40 is slidably connected to the connecting piece 38, the connecting column 40 is used in conjunction with the top column 34, a sealing piece 41 is fixedly connected to the connecting column 40, the outer side surface of the sealing piece 41 is movably connected to a sealing ring 42 fixedly connected to the sliding column 25, a spring 43 is fixedly connected between the sealing piece 41 and the connecting piece 38, and a sealing pad 44 is installed at the top end of the sliding column 25 and the bottom end of the infusion tube 28.

[0039] A ball 46 slidably connected to the fixed column 5 is rotatably connected in the sliding sleeve 8 , and a spiral groove 47 matched with the ball 46 is formed on the fixed column 5 .

[0040] A method for recovering a rubidium-cesium extraction and separation device comprises the following steps:

[0041] S1: The alkali content of the solution containing rubidium and cesium potassium is adjusted to 0.8-1.0 mol / L in one step;

[0042] S2: The dissolved liquid after alkali adjustment enters the extraction and separation process of cesium and rubidium, and the extractant is 0.5-1.5 mol / L t-BAMBP and 260# solvent oil;

[0043] S3: The cesium-loaded saturated organic phase is washed with deionized water to remove the rubidium in the organic phase;

[0044] S4: after washing rubidium, the organic phase is stripped to obtain a cesium stripping solution, thereby achieving separation of cesium and rubidium;

[0045] S5: The cesium extraction residue is subjected to rubidium potassium extraction and separation, and after rubidium extraction, potassium washing, and stripping operations, a rubidium stripping solution is obtained to achieve rubidium potassium separation.

[0046] Working principle:

[0047] During the extraction process, the rubidium-cesium solution is first transported to the tank body 1. At this time, the float plate 10, the float disk 11 and the air bag 12 are transported to the bottom end of the top cover 3 through the buoyancy of the solution. At this time, the first magnet 14 and the second magnet 15 located at the top position will be attracted to each other, so that the end of the infusion tube 28 fits with the end of the sliding column 25, and then the top column 34 will squeeze the connecting column 40 to make the connecting column 40 slide, so that the sliding of the connecting column 40 drives the sealing sheet 41 to slide, so that the sealing sheet 41 is away from the sealing ring 42. At this time, the valve on the material tank 30 is opened, so that the extraction solvent inside the material tank 30 is transported to the cavity 36 of the sliding column 25 through the collecting pipe 29 and the infusion pipe 28. Then, the bottom end of the cavity 36 is directly reached through the gap between the sealing sheet 41 and the sealing ring 42. Since the infusion hole 37 is located inside the airbag 12, the solvent finally enters the airbag 12 through the action of the infusion hole 37, thereby increasing the gravity of the airbag 12. After the weight increases to a level that the gravity is greater than the buoyancy and the suction of the first magnet 14 and the second magnet 15, the floating plate 10, the airbag 12 and the floating plate 11 sink, and the valve on the tank 30 is closed. When it descends to the bottom end of the tank body 1, the first magnet 14 and the second magnet 15 at the bottom are adsorbed. During the adsorption process, the support sheet 26 at the bottom end of the sliding column 25 is squeezed by the action of the push block 27, so that the sliding column 25 moves upward, and the material tank 30 is moved upward. The connecting block 24 is driven to move upward, thereby driving the rack 23 to move upward, and then driving the flat gear 22 to rotate. When the flat gear 22 rotates, it will drive the rotating tube 19 to rotate, so that the first liquid outlet 18 and the second liquid outlet 20 are completely corresponding. At this time, the solvent inside the airbag 12 is discharged from the first liquid outlet 18 and the second liquid outlet 20 into the tank body 1 through the effect of water pressure. In this process, since the solvent in the airbag 12 is gradually discharged, the weight of the airbag 12, the floating plate 10 and the floating disk 11 decreases. At this time, the gravity of the floating plate 10, the floating disk 11 and the airbag 12 plus the suction force of the first magnet 14 and the second magnet 15 is less than the buoyancy (at this time, the solvent in the airbag 12 has not been completely discharged). At this time, the buoyancy It will drive the floating plate 10, the floating disk 11 and the airbag 12 to rise and reset. During the reset process, the sliding sleeve 8 rotates along the fixed column 5 through the cooperation of the ball 46 and the spiral groove 47, thereby driving the connecting sleeve 9 to rotate, thereby driving the floating plate 11 and the fixed tube 17 to rotate, and then driving the stirring blade 45 to rotate. Therefore, the solvent is released from bottom to top, and in the release process, it is stirred and mixed by the rotation of the stirring blade 45, so that the solvent is evenly distributed on the tank body 1, thereby improving the mixing efficiency. It is particularly noted that: during the descent of the floating plate 10, the spring 43 will release the elastic force to reset, thereby driving the sealing sheet 41 to reset, thereby closing the top of the sliding column 25 to prevent the rubidium-cesium solvent from entering the airbag 12.

[0048] When the solvent dissipates, the weight decreases. At this time, when the float plate 10 rises, the float plate 10 will drive the airbag 12 and the floating plate 11 to rise together. After rising to the top position, the infusion tube 28 and the sealing gasket 44 will squeeze the sliding column 25, causing the sliding column 25 to move down and reset. Therefore, the sliding column 25 drives the rack 23 to move in the opposite direction and reset, and then drives the flat gear 22 to rotate in the opposite direction and reset, thereby causing the first liquid outlet 18 and the second liquid outlet 20 to be misaligned. At this time, due to the misalignment of the first liquid outlet 18 and the second liquid outlet 20, the liquid cannot be discharged from the first liquid outlet 18 and the second liquid outlet 20.

[0049] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0050] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A rubidium-cesium extraction and separation device, comprising: A tank body (1), characterized in that: the bottom end of the tank body (1) is connected to a discharge pipe (2), the top end of the tank body (1) is fixedly connected to a top cover (3), the bottom end of the top cover (3) is fixedly connected to a fixing plate (4), the fixing plate (4) is fixedly connected to a fixing column (5), the bottom end of the fixing column (5) is fixedly connected to a fixing frame (6) fixedly connected to the tank body (1), the fixing frame (6) is provided with a plurality of groups of notches (7), and the outer side surface of the fixing column (5) is sleeved with a sliding sleeve (8), the outer side of the sliding sleeve (8) is fixedly connected to a connecting sleeve (9), and the connecting sleeve The top end of the connecting sleeve (9) is fixedly connected to a floating plate (10), and the bottom end of the connecting sleeve (9) is fixedly connected to a floating plate (11), an air bag (12) is fixedly connected between the floating plate (10) and the floating plate (11), a plurality of groups of liquid outlet parts (13) are installed on the floating plate (11), and the top end of the floating plate (10) and the bottom end of the floating plate (11) are fixedly connected to a first magnet (14), the fixed plate (4) and the fixed frame (6) are fixedly connected to a second magnet (15), and the top end of the top cover (3) is installed with an infusion part (16) for transporting a solution into the air bag (12).

2. A rubidium-cesium extraction and separation device according to claim 1, characterized in that: The liquid outlet member (13) comprises a fixed tube (17) fixedly connected to the floating plate (11), a plurality of first liquid outlet holes (18) being provided on the fixed tube (17), a rotating tube (19) being rotatably connected inside the fixed tube (17), a plurality of groups of second liquid outlet holes (20) being provided on the rotating tube (19), and the positions of the second liquid outlet holes (20) and the first liquid outlet holes (18) being arranged correspondingly, and a rotating member (21) for driving the rotating tube (19) to rotate is installed at the end of the rotating tube (19), one end of the rotating tube (19) passes through the floating plate (11), and one end of the rotating tube (19) located inside the airbag (12) is provided with a liquid inlet, and the liquid inlet is communicated with the plurality of groups of second liquid outlet holes (20).

3. A rubidium-cesium extraction and separation device according to claim 2, characterized in that: The rotating member (21) comprises a flat gear (22) fixedly connected to the rotating tube (19); a rack (23) is meshed on the outer side of the flat gear (22); a connecting block (24) is fixedly connected to the rack (23); a sliding column (25) slidably connected to the floating plate (10) and the floating disk (11) is fixedly connected to the connecting block (24); and the upper and lower ends of the sliding column (25) respectively penetrate the floating plate (10) and the floating disk (11); the bottom end of the sliding column (25) is fixedly connected to a supporting plate (26); and a top block (27) fixedly connected to the fixed frame (6) is installed at the bottom end of the supporting plate (26).

4. The rubidium-cesium extraction and separation device according to claim 3, characterized in that: The infusion component (16) comprises a plurality of groups of infusion tubes (28) mounted on the top cover (3), a collecting tube (29) being connected between the plurality of groups of infusion tubes (28), a top end of the collecting tube (29) being connected to a material tank (30), and the positions of the plurality of groups of infusion tubes (28) and the plurality of groups of sliding columns (25) corresponding to each other, a connecting component (31) being installed between the sliding column (25) and the infusion tube (28).

5. The rubidium-cesium extraction and separation device according to claim 4, characterized in that: The connecting piece (31) comprises a fixed block (32) fixed in the infusion tube (28), the fixed block (32) is provided with a plurality of through holes (33), the fixed block (32) is also fixedly connected with a top column (34), the bottom end of the top column (34) is connected with a sealing member (35) installed in the sliding column (25), a cavity (36) is provided at the top position of the sliding column (25), the sealing member (35) is installed in the cavity (36), and an infusion hole (37) is provided at the bottom end of the cavity (36), the infusion hole (37) is communicated with the outer wall of the sliding column (25), and the infusion hole (37) is located in the air bag (12).

6. The rubidium-cesium extraction and separation device according to claim 5, characterized in that: The sealing member (35) comprises a connecting piece (38) installed in the cavity (36), the connecting piece (38) is provided with a plurality of groups of liquid leakage holes (39), and a connecting column (40) is slidably connected to the connecting piece (38), the connecting column (40) is used in conjunction with the top column (34), a sealing piece (41) is fixedly connected to the connecting column (40), the outer side surface of the sealing piece (41) is movably connected to a sealing ring (42) fixedly connected to the sliding column (25), and a spring (43) is fixedly connected between the sealing piece (41) and the connecting piece (38).

7. The rubidium-cesium extraction and separation device according to claim 6, characterized in that: A ball (46) slidably connected to the fixed column (5) is rotatably connected inside the sliding sleeve (8), and a spiral groove (47) adapted to the ball (46) is provided on the fixed column (5).

8. The rubidium-cesium extraction and separation device according to claim 7, characterized in that: The top end of the sliding column (25) and the bottom end of the infusion tube (28) are both installed with sealing pads (44).

9. The rubidium-cesium extraction and separation device according to claim 8, characterized in that: The outer side surface of the fixed tube (17) is fixedly connected with a stirring blade (45).

10. A recovery method using the rubidium-cesium extraction and separation device according to claim 9, characterized in that: The specific steps include: S1: The alkali content of the solution containing rubidium and cesium potassium is adjusted to 0.8-1.0 mol / L in one step; S2: The dissolved liquid after alkali adjustment enters the extraction and separation process of cesium and rubidium, and the extractant is 0.5-1.5 mol / L t-BAMBP and 260# solvent oil; S3: The cesium-loaded saturated organic phase is washed with deionized water to remove the rubidium in the organic phase; S4: after washing rubidium, the organic phase is stripped to obtain a cesium stripping solution, thereby achieving separation of cesium and rubidium; S5: The cesium extraction residue is subjected to rubidium potassium extraction and separation, and after rubidium extraction, potassium washing, and stripping operations, a rubidium stripping solution is obtained to achieve rubidium potassium separation.

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