A device and method for recovering rare earths in a lutetium yttrium silicate crystal

Abstract

The present invention discloses a device and method for rare earth recovery in a lutetium yttrium silicate crystal, which relates to the technical field of yttrium lutetium rare earth recovery. It includes a rear vertical plate, a top plate, an intermediate plate, and a workbench. A first centrifuge cylinder is rotatably connected to the top of the top plate, and a second centrifuge cylinder is rotatably connected to the top of the intermediate plate. A switching valve is additionally provided at the top of the first centrifuge cylinder. One of the core structures of the present invention is the recovery cylinder, and a multifunctional composite component is arranged inside the recovery cylinder. When it is necessary to clean the filter mesh plate inside the recovery cylinder, the multifunctional composite component can automatically dredge the blocked mesh holes of the filter mesh plate by using its weight when the recovery cylinder is flipped. At the same time, the multifunctional composite component can stop the recovery cylinder from entering the water phase to be treated; the intercepted precipitate is released to the recovery component, and this component can automatically dredge the blocked mesh holes of the filter mesh plate by using its own weight when the recovery cylinder is flipped, reducing the manual maintenance cost and improving the self-cleaning ability of the equipment.

Description

Technical Field

[0001] The present invention relates to the technical field of yttrium lutetium rare earth recycling, and particularly relates to a device and method for recycling rare earths in a yttrium lutetium silicate crystal. Background Art

[0002] Yttrium lutetium silicate (LYSO) crystal is a scintillation crystal containing lutetium (Lu), yttrium (Y), silicon (Si) and oxygen (O). Due to its high density, high light yield and fast decay time, it is widely used in fields such as high-energy physics and nuclear medicine imaging (such as PET scans). Rare earth elements such as lutetium and yttrium are key materials for manufacturing LYSO crystals. Due to their limited reserves, difficult extraction and high environmental protection costs, recycling rare earth elements can reduce resource consumption, reduce environmental pollution and improve material utilization rate.

[0003] In the prior art, when recycling rare earth elements in yttrium lutetium silicate crystals, most often use a series of processes of acid leaching - extraction - back extraction. Finally, a precipitating agent is used to precipitate and transform the rare earth elements in the solution, and a filtering device is used to separate the precipitate from the waste solution. However, the filtering structure of these filtering devices does not have a self-cleaning function. After long-term use, the filtering holes will gradually become blocked, the filtering flow rate will gradually decrease, and the production efficiency of the equipment will be delayed. Summary of the Invention

[0004] The purpose of the present invention is to solve the problem that in the prior art, when recycling rare earth elements in yttrium lutetium silicate crystals, most often use a series of processes of acid leaching - extraction - back extraction. Finally, a precipitating agent is used to precipitate and transform the rare earth elements in the solution, and a filtering device is used to separate the precipitate from the waste solution. However, the filtering structure of these filtering devices does not have a self-cleaning function. After long-term use, the filtering holes will gradually become blocked, the filtering flow rate will gradually decrease, and the production efficiency of the equipment will be delayed, and to propose a device for recycling rare earths in a yttrium lutetium silicate crystal.

[0005] In order to achieve the above purpose, the present invention adopts the following technical scheme:

[0006] A device for recycling rare earths in a yttrium lutetium silicate crystal, including a rear vertical plate, a top plate, an intermediate plate, and a workbench. A first centrifuge cylinder is rotatably connected to the top of the top plate, a second centrifuge cylinder is rotatably connected to the top of the intermediate plate. A switching valve is additionally provided at the top of the first centrifuge cylinder. Driving components are arranged on the outer walls of the first centrifuge cylinder and the second centrifuge cylinder. Acid guiding pipes are fixedly arranged at the tops of the outer walls of the first centrifuge cylinder and the second centrifuge cylinder. The driving components can drive the liquid inside the first centrifuge cylinder and the second centrifuge cylinder to perform centrifugal motion, separating the aqueous phase from the organic phase containing different rare earth elements;

[0007] A docking hopper is rotatably connected to the bottom of each of the first centrifugal cylinder and the second centrifugal cylinder. A vertical pipe is fixedly arranged on the docking hopper at the bottom of the first centrifugal cylinder, and the bottom of the vertical pipe is movably inserted into the top of the second centrifugal cylinder. A side vertical plate is fixedly arranged at the edge position of the side surface of the rear vertical plate, and a controller is fixedly arranged on the side surface of the side vertical plate. Two tipping pipes are rotatably connected to the side surface of the side vertical plate in the vertical direction, and the other end of the tipping pipe is fixedly communicated with a recovery cylinder, and the recovery cylinder is used to capture rare earth elements in the aqueous phase by using a precipitant.

[0008] A blocking net plate is fixedly arranged inside the recovery cylinder. Horizontal connecting pipes are fixedly arranged on the side surfaces of the bottoms of the docking hoppers, and the other ends of the horizontal connecting pipes are movably inserted into the side surface of the liquid inlet pipe. The liquid inlet pipe is fixedly connected to the top of the side surface of the recovery cylinder. A flow splitting component is arranged on the side surface of the docking hopper, and the flow splitting component controls the flow direction of the mixed phase inside the first centrifugal cylinder and the second centrifugal cylinder. A multi-functional composite component is arranged inside the recovery cylinder, and the multi-functional composite component is used to self-clean the blocked mesh holes of the blocking net plate, and at the same time prevent the recovery cylinder from entering the water phase to be treated and prevent the recovery cylinder from entering the precipitant.

[0009] Optionally, the driving component includes a centrifugal motor, a driving gear, and a driven gear. A centrifugal motor is fixedly arranged at the bottom of each of the top plate and the middle plate. A driving gear is fixedly arranged at the output end of the centrifugal motor, and a driven gear is stably meshed on the side surface of the driving gear. A driven gear is fixedly arranged on the outer wall of each of the first centrifugal cylinder and the second centrifugal cylinder.

[0010] Optionally, the flow splitting component includes an electric push rod, a horizontal column, and a horizontal pipe. A horizontal column is fixedly arranged at the output end of the electric push rod. A vertical hole is opened in the horizontal column in the vertical direction. The other end of the horizontal column is fixedly connected to a horizontal pipe. A diversion hole is opened at the top of the horizontal pipe. The horizontal pipe and the horizontal column are integrally structured and movably inserted into one end of the horizontal connecting pipe.

[0011] Optionally, a top plate, a middle plate, and a workbench are fixedly arranged in sequence in the vertical direction on the side surface of the rear vertical plate. A support frame is fixedly arranged on the common side surfaces of the top plate, the middle plate, and the workbench. An acid inlet hole is opened at the edge position of the side surface of the tipping pipe. Acid inlet pipes are fixedly arranged at equal intervals in the vertical direction on the rear vertical plate. The end of the tipping pipe is movably inserted into one end of the acid inlet pipe.

[0012] Optionally, the end of the tipping pipe is fixedly connected to the output end of a tipping motor, and the tipping motor is fixedly connected to the side surface of the side vertical plate.

[0013] Optionally, an extension pipe is movably inserted into the top of the recovery cylinder. A guide groove is opened on the side surface of the extension pipe, and a guide stud is movably inserted into the guide groove. The other end of the guide stud is fixedly connected to the top of the recovery cylinder.

[0014] Optionally, the rear vertical plate is provided with a rear vertical groove at positions corresponding to the two recovery cylinders, and a recovery component is provided on the side of the rear vertical groove of the rear vertical plate, and the recovery component is used to receive the rare earth precipitate generated inside the recovery cylinder; a waste liquid gathering component is fixedly provided on the front side of the side vertical plate, and the waste liquid gathering component is used to gather and recover the waste liquid generated by the two recovery cylinders, and the recovery component includes a docking frame and a recovery drawer; the rear vertical plate is fixed with a docking frame obliquely below the rear vertical groove, and a recovery drawer is movably inserted into the side of the docking frame.

[0015] Optionally, the waste liquid collection component includes a recovery box, the side of the recovery box is provided with docking grooves equidistantly along the vertical direction, a partition plate is fixedly arranged in the middle position of the inner cavity of the recovery box, a release groove is arranged at an edge position of the partition plate, and a sewage outlet pipe is fixedly arranged at an angle on the bottom of the side of the recovery tube, and the sewage outlet pipe is movably inserted into the interior of the recovery box through the docking groove.

[0016] Optionally, the multifunctional composite component includes a closed folding plate, a common column, and a common disk. A bottom cover is provided at the bottom of the inner cavity of the recovery cylinder. The top of the bottom cover is provided with a conical surface. The common column is movably inserted into the bottom cover along the vertical direction. A counterweight ball is fixedly provided at the bottom of the common column. A common disk is fixedly provided on the outer wall of the common column. A circular array of dredging columns is provided on the top of the common disk. A closed cover is fixedly provided on the top of the common column. The top of the recovery cylinder is in an inverted bucket shape. The closed cover is movably inserted into the top of the recovery cylinder. A closed folding plate is fixedly provided on the bottom of the outer wall of the common column. A middle hole is provided on the top of the side of the closed folding plate. The top of the closed folding plate is movably inserted into the bottom of the liquid inlet pipe.

[0017] A method for recovering rare earth from yttrium lutetium silicate crystals comprises the following steps:

[0018] S1, pre-preparing the loaded organic phase, using a crushing device to make yttrium lutetium silicate crystals into powder, then introducing the powder into an acid solution, the rare earth element into the pickling solution, and then mixing the acid solution containing the rare earth element with an organic extractant prepared by mixing tributyl phosphate and diethylhexyl phosphoric acid to prepare the loaded organic phase;

[0019] S2. Use the counter-extraction technology to separate rare earth elements and convert precipitates. Introduce the low-acidity counter-extraction liquid into the first centrifuge cylinder, and the high-acidity counter-extraction liquid into the second centrifuge cylinder. First, introduce the loaded organic phase into the first centrifuge cylinder. The low-acidity counter-extraction liquid is mixed with the loaded organic phase to obtain a counter-extraction liquid containing yttrium. The first centrifuge cylinder uses a driving component to layer the loaded organic phase by centrifugal motion. The lower part of the first centrifuge cylinder is the aqueous phase, and the upper part is the remaining organic phase. Use a shunt component to introduce the aqueous phase containing yttrium into the recovery cylinder for precipitation conversion. The remaining organic phase enters the second centrifuge cylinder through the shunt component. The second centrifuge cylinder also layers the loaded organic phase by centrifugal motion. The lower part of the second centrifuge cylinder is the aqueous phase, and the upper part is the remaining organic phase. Use the shunt component again to introduce the aqueous phase containing lutetium into the recovery cylinder for precipitation conversion.

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

[0021] 1. One of the core structures of the present invention is the recovery cylinder, and a multifunctional composite component is arranged inside the recovery cylinder. When it is necessary to clean the filter disk in the recovery cylinder, the multifunctional composite component can use its weight to automatically dredge the blocked mesh holes of the filter disk when the recovery cylinder is flipped. At the same time, the multifunctional composite component can stop the recovery cylinder from entering the water phase to be treated; the intercepted precipitate is released to the recovery component, which can use its own weight to automatically dredge the blocked mesh holes of the filter disk when the recovery cylinder is flipped, reducing the manual maintenance cost and improving the self-cleaning ability of the equipment. Secondly, during the cleaning process, the multifunctional composite component can simultaneously prevent the water phase to be treated from entering the recovery cylinder, avoiding secondary pollution of the precipitate and improving the filtration efficiency. In addition, this component can also automatically open the top of the recovery cylinder to smoothly release the precipitate into the recovery component, preventing excessive impurities from accumulating inside the recovery cylinder, extending the service life of the equipment, improving the cleaning effect of the filter disk, and optimizing the water treatment process to achieve automated and efficient operation.

[0022] 2. During the self-cleaning process of the filter disk by the multifunctional composite component of the present invention, the top of the recovery cylinder is simultaneously opened to facilitate the release of the precipitate intercepted above the filter disk of the recovery cylinder when the recovery cylinder rotates to a certain position. While the multifunctional composite component automatically dredges the mesh holes by its own weight or a linkage mechanism, it effectively clears the blockage and improves the filtration efficiency without the need for an additional driving device, reducing energy consumption. At the same time, this component has a compact structure and occupies a small space, but can take into account both the cleaning of the filter disk and the release of the precipitate, avoiding the problem that traditional equipment requires an additional mechanism for precipitate discharge. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0024] Figure 2 is Figure 1Schematic diagram of the right view structure.

[0025] Figure 3 is Figure 1 Schematic diagram of the rear view structure.

[0026] Figure 4 is Figure 1 Schematic diagram of the front view structure.

[0027] Figure 5 is Figure 1 Schematic diagram of the top view structure.

[0028] Figure 6 Schematic diagram of the structure of the flow splitting component.

[0029] Figure 7 Schematic diagram of the structure of the recycling bin.

[0030] Figure 8 is Figure 7 Schematic diagram of the structure from another perspective.

[0031] Figure 9 Schematic diagram of the specific structure of the recycling cylinder.

[0032] Figure 10 Schematic diagram of the half-sectional structure of the recycling cylinder.

[0033] Figure 11 is Figure 10 Schematic diagram of the partially enlarged structure at location A of

[0034] Figure 12 Schematic diagram of the structure of the multi-functional composite component.

[0035] Figure 13 Schematic diagram of the distribution structure of the acid inlet pipe and the pouring pipe.

[0036] In the figure: 1. Top plate; 2. Rear vertical plate; 3. Docking hopper; 4. Intermediate plate; 5. Workbench; 6. Centrifugal motor; 61. Driving gear; 7. Driven gear; 8. Support frame; 9. Rear vertical groove; 10. Recycling drawer; 11. Docking frame; 12. First centrifugal cylinder; 121. Acid guide pipe; 13. Vertical pipe; 131. Horizontal connecting pipe; 14. Second centrifugal cylinder; 15. Side vertical plate; 151. Acid inlet pipe; 16. Tilting motor; 161. Tilting pipe; 1610. Acid inlet hole; 17. Controller; 18. Electric push rod; 19. Horizontal column; 191. Vertical hole; 20. Horizontal pipe; 201. Flow guiding hole; 21. Recycling box; 210. Docking groove; 22. Partition plate; 220. Release groove; 23. Recycling cylinder; 231. Liquid inlet pipe; 24. Bottom cover; 241. Conical surface; 25. Dirt outlet pipe; 26. Intercepting mesh plate; 27. Common plate; 271. Unblocking column; 28. Extension pipe; 281. Guide groove; 29. Guide stud; 30. Sealing folding plate; 301. Intermediate hole; 31. Common column; 310. Counterweight ball; 311. Sealing cover. Detailed implementation manner

[0037] 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.

[0038] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0039] Refer to Figures 1-8 , a rare earth recycling device in a lutetium yttrium silicate crystal, including a rear vertical plate 2, a top plate 1, an intermediate plate 4, and a workbench 5. A first centrifugal cylinder 12 is rotatably connected to the top of the top plate 1, and a second centrifugal cylinder 14 is rotatably connected to the top of the intermediate plate 4. A switching valve is additionally provided at the top of the first centrifugal cylinder 12, which is drawn in the figure but not numbered. The user can open the switching valve and introduce the prefabricated loaded organic phase into the first centrifugal cylinder 12.

[0040] Driving components are provided on the outer walls of both the first centrifugal cylinder 12 and the second centrifugal cylinder 14. Acid guide pipes 121 are fixedly arranged at the tops of the outer walls of the first centrifugal cylinder 12 and the second centrifugal cylinder 14. The driving components can drive the liquid inside the first centrifugal cylinder 12 and the second centrifugal cylinder 14 to perform centrifugal motion, separating the aqueous phase from the organic phase containing different rare earth elements. Docking hoppers 3 are rotatably connected to the bottoms of both the first centrifugal cylinder 12 and the second centrifugal cylinder 14. A vertical pipe 13 is fixedly arranged at the docking hopper 3 at the bottom of the first centrifugal cylinder 12. The bottom of the vertical pipe 13 is movably inserted into the top of the second centrifugal cylinder 14. The vertical pipe 13 is used for liquid communication between the first centrifugal cylinder 12 and the second centrifugal cylinder 14.

[0041] Reference Figures 9-12 , the driving components include centrifugal motors 6, driving gears 61, and driven gears 7. A centrifugal motor 6 is fixedly arranged at the bottom of each of the top plate 1 and the middle plate 4. A driving gear 61 is fixedly arranged at the output end of the centrifugal motor 6. A driven gear 7 is stably engaged on the side of the driving gear 61. A driven gear 7 is fixedly arranged on the outer wall of each of the first centrifugal cylinder 12 and the second centrifugal cylinder 14. A controller 17 is fixedly arranged on the side of the side vertical plate 15. The two centrifugal motors 6 are connected to the controller 17. The controller 17 selects a mature PLC control device in the prior art. The centrifugal motor 6 drives the first centrifugal cylinder 12 and the second centrifugal cylinder 14 to rotate through the driving gear 61 and the driven gear 7.

[0042] Side vertical plates 15 are fixedly arranged at the edge positions on the side of the rear vertical plate 2. Two tilting pipes 161 are rotatably connected to the side of the side vertical plate 15 in the vertical direction. The end of the tilting pipe 161 is fixedly connected to the output end of the tilting motor 16. The tilting motor 16 is fixedly connected to the side of the side vertical plate 15. The other end of the tilting pipe 161 is fixedly communicated with a recovery cylinder 23. The recovery cylinder 23 is used to capture the rare earth elements in the aqueous phase with a precipitant. An intercepting net plate 26 is fixedly arranged inside the recovery cylinder 23. Horizontal connecting pipes 131 are fixedly arranged on the side of the bottom of the docking hopper 3. The other end of the horizontal connecting pipe 131 is movably inserted into the side of the liquid inlet pipe 231. The liquid inlet pipe 231 is fixedly connected to the top of the side of the recovery cylinder 23. A flow splitting component is arranged on the side of the docking hopper 3.

[0043] The flow splitting component controls the flow direction of the mixed phase inside the first centrifugal cylinder 12 and the second centrifugal cylinder 14. A multi-functional composite component is arranged inside the recovery cylinder 23. The multi-functional composite component is used to intercept the mesh holes blocked by the mesh plate 26 for self-cleaning, and at the same time prevent the recovery cylinder 23 from entering the water phase to be treated and prevent the recovery cylinder 23 from entering the precipitant. The multi-functional composite component includes a closed folding plate 30, a common column 31, and a common disk 27. A bottom cover 24 is arranged at the bottom of the inner cavity of the recovery cylinder 23. The top of the bottom cover 24 is set as a conical surface 241. A common column 31 is inserted into the bottom cover 24 in a vertically movable manner. A counterweight ball 310 is fixedly arranged at the bottom of the common column 31. The top of the recovery cylinder 23 is in an inverted funnel shape. An opening is arranged at the top of the recovery cylinder 23, and a closed cover 311 is used to close the opening. When the recovery cylinder 23 is in a vertical state, the counterweight ball 310 will drive the dredging column 271 below the common column 31 away from the mesh holes of the intercepting mesh plate 26.

[0044] A common disk 27 is fixedly arranged on the outer wall of the common column 31. Dredging columns 271 are circularly arrayed on the top of the common disk 27. A closed cover 311 is fixedly arranged at the top of the common column 31. The top of the recovery cylinder 23 is in an inverted funnel shape. The closed cover 311 is inserted into the top of the recovery cylinder 23 in a movable manner. A closed folding plate 30 is fixedly arranged at the bottom of the outer wall of the common column 31. An intermediate hole 301 is arranged at the top of the side surface of the closed folding plate 30. The closed folding plate 30 includes a vertical section and a horizontal section. The intermediate hole 301 is arranged at the top of the side surface of the vertical section of the closed folding plate 30.

[0045] The top of the closed folding plate 30 is inserted into the bottom of the liquid inlet pipe 231 in a movable manner. The flow splitting component includes an electric push rod 18, a horizontal column 19, and a horizontal pipe 20. The output end of the electric push rod 18 is fixedly provided with a horizontal column 19. A vertical hole 191 is arranged in the horizontal column 19 in the vertical direction. The other end of the horizontal column 19 is fixedly connected with a horizontal pipe 20. A diversion hole 201 is arranged at the top of the horizontal pipe 20. The horizontal pipe 20 and the horizontal column 19 are integrally inserted into one end of the horizontal connecting pipe 131 in a movable manner. A top plate 1, an intermediate plate 4, and a workbench 5 are fixedly arranged on the side of the rear vertical plate 2 in sequence in the vertical direction. A support frame 8 is fixedly arranged in common on the sides of the top plate 1, the intermediate plate 4, and the workbench 5. An acid inlet hole 1610 is arranged at the edge position of the side surface of the tipping pipe 161.

[0046] Reference Figure 13, the rear vertical plate 2 is fixedly provided with acid inlet pipes 151 at equal intervals in the vertical direction. The end of the pouring pipe 161 is movably inserted into one end of the acid inlet pipe 151. The top of the recovery cylinder 23 is movably inserted with an extension pipe 28. A guiding groove 281 is formed on the side surface of the extension pipe 28. A guiding stud 29 is movably inserted through the guiding groove 281. The other end of the guiding stud 29 is fixedly connected to the top of the recovery cylinder 23. The rear vertical plate 2 is provided with rear vertical grooves 9 at positions corresponding to the two recovery cylinders 23. When the recovery cylinder 23 is in an inclined state, the extension pipe 28 will be pulled out of the recovery cylinder 23 by a certain length due to its own weight, compensating for the distance between the top of the recovery cylinder 23 and the recovery assembly, facilitating the release of the precipitate in the recovery cylinder 23 into the recovery assembly.

[0047] A recovery assembly is arranged on the side of the rear vertical groove 9 of the rear vertical plate 2. The recovery assembly is used to receive the rare earth precipitate generated inside the recovery cylinder 23. A waste liquid aggregation assembly is fixedly arranged on the front side of the side vertical plate 15. The waste liquid aggregation assembly is used to aggregate and recover the waste liquid generated by the two recovery cylinders 23. The recovery assembly includes a docking frame 11 and a recovery drawer 10. The rear vertical plate 2 is fixedly provided with docking frames 11 obliquely below the rear vertical grooves 9. The recovery drawer 10 is movably inserted into the side surface of the docking frame 11. The waste liquid aggregation assembly includes a recovery box 21. The side surface of the recovery box 21 is provided with docking grooves 210 at equal intervals in the vertical direction. A partition plate 22 is fixedly arranged at the middle position of the inner cavity of the recovery box 21. A release groove 220 is formed at one edge position of the partition plate 22. The bottom of the side surface of the recovery cylinder 23 is obliquely fixedly provided with a dirt outlet pipe 25. The dirt outlet pipe 25 is movably inserted into the recovery box 21 through the docking groove 210.

[0048] The specific implementation steps and principles of the present invention are as follows:

[0049] First, perform the pre - preparation work of the loaded organic phase. Use a crushing device to make yttrium lutetium silicate crystals into powder, then introduce the powder into an acidic solution, and the rare earth elements enter the pickling solution. Then, mix the acidic solution containing rare earth elements with an organic extractant made of tributyl phosphate and di - 2 - ethylhexyl phosphoric acid to make a loaded organic phase.

[0050] Secondly, use the back - extraction technology to separate rare earth elements and transform the precipitate. Sequentially introduce the low - acidity back - extraction liquid into the first centrifuge cylinder 12 and the high - acidity back - extraction liquid into the second centrifuge cylinder 14 through two acid guiding pipes 121. At this time, both electric push rods 18 drive the horizontal columns 19 to close the bottom of the docking hopper 3.

[0051] At this time, the two recovery cylinders 23 are in a vertical state. The acid inlet pipe 15 is communicated with the acid inlet hole 1610. The middle hole 301 is inside the liquid inlet pipe 231. The closed cover 311 closes the top of the recovery cylinder 23, and multiple dredging columns 271 are below the intercepting net plate 26.

[0052] The loaded organic phase is first introduced into the first centrifuge cylinder 12. The low-acidity stripping solution is mixed with the loaded organic phase to obtain a stripping solution containing yttrium. The first centrifuge cylinder 12 uses a driving component to layer the loaded organic phase by centrifugal motion. After waiting for a period of time, the lower part of the first centrifuge cylinder 12 is the aqueous phase, and the upper part is the remaining organic phase. The worker observes the height of the aqueous phase and starts the positive rotation of the electric push rod 18 at the bottom of the first centrifuge cylinder 12, driving the time required for the diversion hole 201 to communicate with the docking hopper 3 at the bottom of the first centrifuge cylinder 12, and introducing the aqueous phase containing yttrium into the recovery cylinder 23 for precipitation conversion. The precipitant enters the recovery cylinder 23 and reacts with the aqueous phase containing yttrium to form a precipitate.

[0053] The worker observes the height of the aqueous phase and starts the reverse rotation of the electric push rod 18 at the bottom of the first centrifuge cylinder 12, driving the time required for the vertical hole 191 to communicate with the docking hopper 3 at the bottom of the first centrifuge cylinder 12. The remaining organic phase enters the second centrifuge cylinder 12 through the shunt component. The second centrifuge cylinder 12 also layers the loaded organic phase by centrifugal motion. The lower part of the first centrifuge cylinder 12 is the aqueous phase, and the upper part is the remaining organic phase. Again, using the shunt component at the bottom of the second centrifuge cylinder 12, the specific steps refer to the operation steps of the first centrifuge cylinder 12, and the aqueous phase containing lutetium is introduced into the recovery cylinder 23 for precipitation conversion.

[0054] When it is necessary to clean the intercepting net plate 26, start the tilting motor 16 to flip 180 degrees, so that the extension pipe 28 is in an inclined downward state. At this time, the extension pipe 28 will slide out a part of its length from the bottom of the recovery cylinder 23 through the rear vertical groove 9 and hang above the recovery drawer 10. At this time, the counterweight ball 310 can drive the common column 31 to move downward in the vertical direction, driving the middle hole 301 to disengage from the inside of the liquid inlet pipe 231, and at the same time, the closing cover 311 opens the bottom of the recovery cylinder 32 at this time, and the dredging column 271 is inserted into the mesh holes of the intercepting net plate 27.

[0055] The above is only a 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 and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A device for recovering rare earths in a lutetium yttrium silicate crystal, comprising a rear vertical plate, a top plate, an intermediate plate, and a workbench, characterized in that, A first centrifuge tube is rotatably connected to the top of the top plate, and a second centrifuge tube is rotatably connected to the top of the middle plate. A switching valve is additionally arranged at the top of the first centrifuge tube. Driving components are arranged on the outer walls of the first centrifuge tube and the second centrifuge tube. Acid guide tubes are fixedly arranged at the tops of the outer walls of the first centrifuge tube and the second centrifuge tube. The driving components can drive the liquid inside the first centrifuge tube and the second centrifuge tube to perform centrifugal motion, separating the aqueous phase from the organic phase containing different rare earth elements. Docking hoppers are rotatably connected to the bottoms of the first centrifuge tube and the second centrifuge tube. A vertical tube is fixedly arranged on the docking hopper at the bottom of the first centrifuge tube. The bottom of the vertical tube is movably inserted into the top of the second centrifuge tube. A side vertical plate is fixedly arranged at the side edge position of the rear vertical plate. A controller is fixedly arranged on the side of the side vertical plate. Two tipping tubes are rotatably connected to the side of the side vertical plate in the vertical direction. The other end of the tipping tube is fixedly communicated with a recovery cylinder, and the recovery cylinder is used to capture the rare earth elements in the aqueous phase by using a precipitant. An intercepting mesh plate is fixedly arranged inside the recovery cylinder. Horizontal connecting tubes are fixedly arranged on the side surfaces of the bottoms of the docking hoppers. The other ends of the horizontal connecting tubes are movably inserted into the side surface of the liquid inlet tube. The liquid inlet tube is fixedly connected to the top of the side surface of the recovery cylinder. A flow splitting component is arranged on the side surface of the docking hopper, and the flow splitting component controls the flow direction of the mixed phase inside the first centrifuge tube and the second centrifuge tube. A multifunctional composite component is arranged inside the recovery cylinder. The multifunctional composite component is used for self-cleaning the blocked mesh holes of the intercepting mesh plate, and at the same time preventing the recovery cylinder from entering the water phase to be treated and preventing the recovery cylinder from entering the precipitant.

2. The rare earth recovery device for yttrium lutetium silicate crystal according to claim 1, wherein the driving component comprises a centrifugal motor, a driving gear, and a driven gear. A centrifugal motor is fixedly arranged at the bottom of each of the top plate and the middle plate. A driving gear is fixedly arranged at the output end of the centrifugal motor. A driven gear is stably meshed on the side of the driving gear. A driven gear is fixedly arranged on the outer wall of each of the first centrifuge tube and the second centrifuge tube.

3. The rare earth recovery device for yttrium lutetium silicate crystal according to claim 1, wherein the flow splitting component comprises an electric push rod, a horizontal column, and a horizontal tube. A horizontal column is fixedly arranged at the output end of the electric push rod. A vertical hole is opened in the horizontal column in the vertical direction. The other end of the horizontal column is fixedly connected to a horizontal tube. A diversion hole is opened at the top of the horizontal tube. The horizontal tube and the horizontal column are integrally structured and movably inserted into one end of the horizontal connecting tube.

4. The rare earth recovery device for yttrium lutetium silicate crystal according to claim 1, wherein the top plate, the middle plate, and the workbench are sequentially fixedly arranged on the side of the rear vertical plate in the vertical direction. A support frame is fixedly arranged in common on the sides of the top plate, the middle plate, and the workbench. An acid inlet hole is opened at the side edge position of the tipping tube. Acid inlet tubes are fixedly arranged at equal intervals in the vertical direction on the rear vertical plate. The end of the tipping tube is movably inserted into one end of the acid inlet tube.

5. The rare earth recovery device for yttrium lutetium silicate crystal according to claim 1, wherein the end of the tipping tube is fixedly connected to the output end of a tipping motor, and the tipping motor is fixedly connected to the side of the side vertical plate.

6. A rare earth recovery device in a lutetium yttrium silicate crystal according to claim 1, wherein an extension pipe is movably inserted into the top of the recovery cylinder, a guiding groove is formed on the side surface of the extension pipe, a guiding stud penetrates through the guiding groove movably, and the other end of the guiding stud is fixedly connected to the top of the recovery cylinder.

7. A rare earth recovery device in a lutetium yttrium silicate crystal according to claim 1, wherein rear vertical grooves are formed at positions corresponding to the two recovery cylinders on the rear vertical plate, a recovery assembly is arranged on the side surface of the rear vertical groove of the rear vertical plate, the recovery assembly is used for receiving rare earth precipitates generated inside the recovery cylinder, a waste liquid aggregation assembly is fixedly arranged on the front side surface of the side vertical plate, the waste liquid aggregation assembly is used for aggregating and recovering waste liquid generated by the two recovery cylinders, the recovery assembly comprises a docking frame and a recovery drawer, docking frames are fixedly arranged at the lower oblique positions of the rear vertical grooves of the rear vertical plate, and the recovery drawer is movably inserted into the side surface of the docking frame.

8. A rare earth recovery device in a lutetium yttrium silicate crystal according to claim 7, wherein the waste liquid aggregation assembly comprises a recovery box, docking grooves are arranged at equal intervals in the vertical direction on the side surface of the recovery box, a partition plate is fixedly arranged at the middle position of the inner cavity of the recovery box, a release groove is formed at one edge position of the partition plate, a sewage discharge pipe is fixedly arranged at the bottom of the side surface of the recovery cylinder in an inclined manner, and the sewage discharge pipe is movably inserted into the inside of the recovery box through the docking groove.

9. A rare earth recovery device in a lutetium yttrium silicate crystal according to claim 1, wherein the multifunctional composite assembly comprises a closed folding plate, a common column and a common disc, a bottom cover is arranged at the bottom of the inner cavity of the recovery cylinder, the top of the bottom cover is arranged as a conical surface, a common column penetrates through the bottom cover in the vertical direction, a counterweight ball is fixedly arranged at the bottom of the common column, a common disc is fixedly arranged on the outer wall of the common column, dredging columns are arranged in a circular array on the top of the common disc, a closed cover is fixedly arranged at the top of the common column, the top of the recovery cylinder is in an inverted hopper shape, the closed cover is movably inserted into the top of the recovery cylinder, a closed folding plate is fixedly arranged at the bottom of the outer wall of the common column, a middle hole is formed at the top of the side surface of the closed folding plate, and the top of the closed folding plate is movably inserted into the bottom of the liquid inlet pipe.

10. A method for recovering rare earths in a lutetium yttrium silicate crystal, which is used for the apparatus for recovering rare earths in a lutetium yttrium silicate crystal according to any one of the above-mentioned claims 1-9, characterized in that, Comprising the following steps: S1, preparation of the loaded organic phase: using a crushing device to make the lutetium yttrium silicate crystal into powder, then introducing the powder into an acidic solution, the rare earth elements enter the pickling solution, and then the acidic solution containing rare earth elements is mixed with an organic extractant made of tributyl phosphate and di (2-ethylhexyl) phosphoric acid to make the loaded organic phase; S2. Use the back-extraction technology for the separation of rare earth elements and precipitation conversion. Import the low-acidity back-extraction liquid into the first centrifuge cylinder, and import the high-acidity back-extraction liquid into the second centrifuge cylinder. First, import the loaded organic phase into the first centrifuge cylinder. The low-acidity back-extraction liquid is mixed with the loaded organic phase to obtain a back-extraction liquid containing yttrium. The first centrifuge cylinder uses a driving component to stratify the loaded organic phase by centrifugal motion. The lower part of the first centrifuge cylinder is the aqueous phase, and the upper part is the remaining organic phase. Use a shunt component to import the aqueous phase containing yttrium into the recovery cylinder for precipitation conversion. The remaining organic phase enters the second centrifuge cylinder through the shunt component. The second centrifuge cylinder also uses centrifugal motion to stratify the loaded organic phase. The lower part of the second centrifuge cylinder is the aqueous phase, and the upper part is the remaining organic phase. Again, use the shunt component to import the aqueous phase containing lutetium into the recovery cylinder for precipitation conversion.

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