Rare earth precipitation extraction device

Abstract

The utility model discloses a rare earth precipitation and extraction device, which belongs to the technical field of rare earth extraction and comprises a stirring cavity, a filter box arranged below the stirring cavity, a stirring rod arranged inside the stirring cavity, a plurality of through holes penetrating through the bottom wall of the stirring cavity, and a plurality of partition plates arranged inside the filter box to divide the filter box into a plurality of filter areas. Each filtering area comprises a moving rod, a plug is arranged at the inner end of the moving rod, the plug can plug the through hole, a sliding rod is arranged at the outer end of the moving rod, the sliding rod penetrates through the top wall of the filtering box and can slide up and down, a vibrating screen is arranged below the moving rod, a slag discharging opening is formed in the inclined tail end of the vibrating screen, and a plurality of discharging pipes penetrate through the bottom wall of the filtering box; and a secondary screen is arranged in the discharging pipe. One stirring cavity corresponds to four filtering areas, the stirring cavities are prevented from being idle, the rare earth extraction efficiency is improved, filtered clear liquid is filtered again through a secondary screen of the discharging pipe, and the filtering effect is better.

Description

Technical Field

[0001] The utility model relates to the technical field of rare earth extraction, in particular to a rare earth precipitation extraction device. Background Art

[0002] Rare earth is a general term for 17 metal elements in the chemical periodic table, including lanthanide elements, scandium and yttrium. There are 250 kinds of rare earth minerals in nature, and rare earths are composed of 14 natural elements and synthetic elements. The natural reserves exceed 150 million tons, and the exploitable reserves exceed 88 million tons. The rare earth market is a diversified market. It is not just one product, but 15 rare earth elements and yttrium, scandium and their various compounds, from 46% pure chlorides to 99.9999% single rare earth oxides and rare earth metals, all have a variety of uses.

[0003] The rare earth precipitation extraction device is mainly used to extract rare earth elements from solutions containing rare earth ions by chemical precipitation. The working principle of the rare earth precipitation extraction device is mainly to add a precipitant to the rare earth solution, so that the rare earth ions and the precipitant react chemically to generate a precipitate that is difficult to dissolve in water. The precipitated solution is separated from the precipitate by a filtration system, and the resulting clear liquid contains a high concentration of rare earth ions, which can be used for further purification and concentration.

[0004] In most existing rare earth precipitation and extraction devices, one stirring chamber corresponds to one filtration and precipitation system. Filtration and precipitation require a certain amount of time. During this time, the stirring chamber is idle and needs to wait for the filtration and precipitation to be completed before the next stirring can be performed, resulting in reduced efficiency in rare earth extraction operations. In addition, most devices only perform filtration and extraction once, resulting in the separated clear liquid being mixed with some incompletely filtered finer precipitates, affecting the purity of the rare earth ions in the clear liquid. Utility Model Content

[0005] In order to solve the technical problem that the above-mentioned existing rare earth precipitation extraction devices mostly correspond to one stirring chamber for one filtering and precipitation system, and filtering and precipitation require a certain amount of time, during which the stirring chamber is idle and needs to wait for the filtering and precipitation to be completed before the next stirring can be performed, resulting in reduced efficiency of rare earth extraction operation, and most devices only perform filtering and extraction once, resulting in the separated clear liquid may still be mixed with some incompletely filtered finer precipitates, affecting the purity of rare earth ions in the clear liquid, the utility model provides a rare earth precipitation extraction device.

[0006] A rare earth precipitation extraction device comprises a stirring chamber, a filter box is arranged below the stirring chamber, a stirring rod is arranged inside the stirring chamber, a plurality of through holes are arranged through the bottom wall of the stirring chamber, a plurality of partition plates are arranged inside the filter box, and the filter box is divided into a plurality of filter areas, each filter area comprises a moving rod, a plug is arranged at the inner end of the moving rod, the plug can block the through hole, a sliding rod is arranged at the outer end of the moving rod, the sliding rod passes through the top wall of the filter box and can slide up and down, a vibrating screen is arranged below the moving rod, a slag discharge port is arranged at the inclined end of the vibrating screen, a plurality of discharge pipes are arranged through the bottom wall of the filter box, and a secondary screen is arranged inside the discharge pipe.

[0007] More preferably, the stirring chamber is preferably a cylindrical structure, and a motor is provided on its top wall through a mounting frame, a feed pipe is provided through the top wall of the stirring chamber, and the filter box is preferably a square structure, and a support column is provided on its bottom wall.

[0008] More preferably, the stirring stick includes a rotating shaft and a stirring paddle, the rotating shaft is arranged at the output end of the motor, and the stirring paddle is fixedly arranged on the outer wall of the rotating shaft.

[0009] More preferably, the number of through holes, partition plates and filter areas is preferably four, and the side walls of the filter box and the side walls of the partition plates are correspondingly provided with slide grooves, and the two ends of the moving rod can slide up and down in the slide grooves.

[0010] More preferably, the slag discharge port is provided with a cover plate which is rotatable by a hinge, and sealing rings are fixedly provided on the cover plate and the side wall of the plug.

[0011] More preferably, the partition plate is provided with a support block, a spring group is fixedly provided on the top wall of the support block, the bottom wall of the inclined upper end of the vibrating screen is fixedly connected to the spring group, a vibration motor is provided on the bottom wall of the vibrating screen, and the inclined lower end of the vibrating screen is fixedly provided on the inner wall of the filter box.

[0012] More preferably, the outer wall at the top end of the discharge pipe is rotatably connected to the bottom wall of the filter box through a thread, and the bottom end of the discharge pipe is movably provided with a bottom cover through a thread.

[0013] Compared with the prior art, the utility model has the following beneficial effects: one stirring chamber corresponds to four filtering areas. After the stirring chamber has stirred the solution, the plug is removed, so that the solution flows from the through hole into one of the filtering areas to be slowly filtered and precipitated. Then the stirring chamber can continue to stir, so that the solution flows into the other three filtering areas, thus avoiding the stirring chamber from being idle and improving the efficiency of rare earth extraction. Moreover, after a period of precipitation, the clear liquid after filtration may produce some fine precipitates. The clear liquid is filtered again through the secondary screen of the discharge pipe, so that the filtration effect is better and the purity of rare earth ions in the clear liquid is higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the front view of the structure of the utility model;

[0015] Figure 2 It is a schematic top view of part of the structure of the utility model;

[0016] Figure 3 It is a top view schematic diagram of the vibrating screen 10 of the utility model;

[0017] Figure 4 It is a schematic diagram of the structure A of the utility model;

[0018] Figure 5 This is a schematic diagram of part structure B of the utility model;

[0019] Figure 6 It is a schematic diagram of partial structure C of the utility model.

[0020] In the figure: 1. stirring chamber; 2. filter box; 3. stirring rod; 4. through hole; 5. partition plate; 6. filtering area; 7. moving rod; 8. plug; 9. sliding rod; 10. vibrating screen; 11. discharge pipe; 12. secondary screen; 13. slag discharge port; 14. feed pipe; 15. support column; 16. rotating shaft; 17. stirring paddle; 18. slide; 19. cover plate; 20. sealing ring; 21. support block; 22. spring group; 23. vibration motor; 24. bottom cover; 25. motor. DETAILED DESCRIPTION

[0021] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0022] It should be noted that the terms "first", "second", etc. in the specification and claims of the utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so as to describe the embodiments of the utility model described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0023] In the present invention, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inside", "outside", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings. These terms are mainly used to better describe the present invention and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0024] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this utility model can be understood according to the specific circumstances. In addition, the term "plurality" should mean two or more than two.

[0025] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present utility model can be combined with each other. Figure 1-Figure 6 The utility model is described in detail in conjunction with the embodiments.

[0026] A rare earth precipitation and extraction device comprises a stirring chamber 1, which is preferably a cylindrical structure, and a motor 25 is arranged on its top wall through a mounting frame, a feed pipe 14 is arranged through the top wall of the stirring chamber 1 for adding rare earth solution and precipitant, a filter box 2 is arranged below the stirring chamber 1 to filter and separate the stirred solution to separate clear liquid and precipitate, the filter box 2 is preferably a square structure, and a support column 15 is arranged on its bottom wall for supporting the overall device.

[0027] A stirring rod 3 is arranged inside the stirring chamber 1, and a plurality of through holes 4 are arranged through the bottom wall of the stirring chamber 1. The stirred solution enters the filter box 2 below from the through holes 4. The stirring rod 3 includes a rotating shaft 16 and a stirring paddle 17. The rotating shaft 16 is arranged at the output end of the motor 25, and the stirring paddle 17 is fixedly arranged on the outer wall of the rotating shaft 16. When in use, the motor 25 is started to drive the rotating shaft 16 to rotate, thereby driving the stirring paddle 17 to fully mix the rare earth solution and the precipitant.

[0028] A plurality of partition plates 5 are arranged inside the filter box 2 to divide the filter box 2 into a plurality of filter areas 6. The number of through holes 4, partition plates 5 and filter areas 6 is preferably four. One stirring chamber 1 corresponds to four filter areas 6, so that the stirring effect of the stirring chamber 1 can be fully utilized to avoid the stirring chamber 1 being idle when the solution is filtered and precipitated.

[0029] Each filter area 6 includes a moving rod 7. The side walls of the filter box 2 and the side walls of the partition plate 5 are correspondingly provided with slide grooves 18. The two ends of the moving rod 7 can slide up and down in the slide grooves 18 to limit and guide the up and down movement of the moving rod 7. When the moving rod 7 moves to the uppermost part of the slide groove 18, the plug 8 just passes through the through hole 4 to block the solution from flowing downward.

[0030] A plug 8 is provided at the inner end of the moving rod 7, and a sealing ring 20 is fixedly provided on the side wall of the plug 8 to prevent liquid leakage. The plug 8 can block the through hole 4. A sliding rod 9 is provided at the outer end of the moving rod 7. The sliding rod 9 passes through the top wall of the filter box 2 and can slide up and down. By pulling the sliding rod 9 to slide up and down, the plug 8 can be driven to move up and down, thereby realizing the passage and blocking of the through hole 4, which is used to cut off or release the solution.

[0031] A vibrating screen 10 is arranged below the moving rod 7, a supporting block 21 is arranged on the partition plate 5, a spring group 22 is fixedly arranged on the top wall of the supporting block 21, the bottom wall of the inclined upper end of the vibrating screen 10 is fixedly connected to the spring group 22, a vibration motor 23 is arranged on the bottom wall of the vibrating screen 10, and the inclined lower end of the vibrating screen 10 is fixedly arranged on the inner wall of the filter box 2.

[0032] The vibration motor 23 is started to drive the vibration screen 10 to vibrate in coordination with the elastic expansion and contraction of the spring group 22 , thereby accelerating the separation of the clear liquid and the sediment and facilitating the sediment to vibrate from the vibration screen 10 to the slag discharge port 13 .

[0033] A slag discharge port 13 is provided at the inclined end of the vibrating screen 10, and the separated sediments gather at the slag discharge port 13. The slag discharge port 13 is provided with a cover plate 19 that is rotated by a hinge. The cover plate 19 can be conveniently rotated at the slag discharge port 13 through a snap locking device of the prior art. The cover plate 19 is opened to facilitate the discharge of the sediment. A sealing ring 20 is fixedly provided on the side wall of the cover plate 19 to prevent the solution from overflowing.

[0034] A plurality of discharge pipes 11 are provided through the bottom wall of the filter box 2, and a secondary screen 12 is provided inside the discharge pipe 11. The outer wall of the top end of the discharge pipe 11 is rotatably connected to the bottom wall of the filter box 2 through a thread, and a bottom cover 24 is movably provided at the bottom end of the discharge pipe 11 through a thread. After the clear liquid settles at the bottom of the filter box 2 for a period of time, the bottom cover 24 can be opened, and after repeated filtration by the secondary screen 12, a clear liquid with a higher purity of rare earth ions can be obtained, and the discharge pipe 11 can be rotated regularly to remove the discharge pipe 11 from the bottom of the filter box 2 to clean the secondary sediment and the secondary screen.

[0035] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A rare earth precipitation extraction device, comprising a stirring chamber (1), below which is provided a filter box (2), characterized in that: A stirring rod (3) is arranged inside the stirring chamber (1), a plurality of through holes (4) are arranged through the bottom wall of the stirring chamber (1), a plurality of partition plates (5) are arranged inside the filter box (2), and the filter box (2) is divided into a plurality of filter areas (6), each filter area (6) comprises a moving rod (7), a plug (8) is arranged at the inner end of the moving rod (7), and the plug (8) can block the through hole (4), a sliding rod (9) is arranged at the outer end of the moving rod (7), and the sliding rod (9) passes through the top wall of the filter box (2) and can slide up and down, a vibrating screen (10) is arranged below the moving rod (7), and a slag discharge port (13) is arranged at the inclined end of the vibrating screen (10), and a plurality of discharge pipes (11) are arranged through the bottom wall of the filter box (2), and a secondary screen (12) is arranged inside the discharge pipe (11).

2. A rare earth precipitation extraction device according to claim 1, characterized in that: The stirring chamber (1) is a cylindrical structure, and a motor (25) is arranged on its top wall through a mounting frame, a feed pipe (14) is arranged through the top wall of the stirring chamber (1), and the filter box (2) is a square structure, and a support column (15) is arranged on its bottom wall.

3. A rare earth precipitation extraction device according to claim 2, characterized in that: The stirring rod (3) comprises a rotating shaft (16) and a stirring paddle (17). The rotating shaft (16) is arranged at the output end of the motor (25), and the stirring paddle (17) is fixedly arranged on the outer wall of the rotating shaft (16).

4. A rare earth precipitation extraction device according to claim 2, characterized in that: The number of through holes (4), partition plates (5) and filter areas (6) are all four, and the side walls of the filter box (2) and the partition plates (5) are correspondingly provided with slide grooves (18), and the two ends of the moving rod (7) can slide up and down in the slide grooves (18).

5. A rare earth precipitation extraction device according to claim 4, characterized in that: The slag discharge port (13) is provided with a cover plate (19) which is rotatable by means of a hinge, and a sealing ring (20) is fixedly provided on the side wall of the cover plate (19) and the plug (8).

6. A rare earth precipitation extraction device according to claim 2, characterized in that: The partition plate (5) is provided with a support block (21), a spring group (22) is fixedly provided on the top wall of the support block (21), the bottom wall of the inclined upper end of the vibration screen (10) is fixedly connected to the spring group (22), a vibration motor (23) is provided on the bottom wall of the vibration screen (10), and the inclined lower end of the vibration screen (10) is fixedly provided on the inner wall of the filter box (2).

7. A rare earth precipitation extraction device according to claim 6, characterized in that: The outer wall of the top end of the discharge pipe (11) is rotatably connected to the bottom wall of the filter box (2) via a thread, and a bottom cover (24) is movably provided at the bottom end of the discharge pipe (11) via a thread.

Images