Leaching device for green production of rare earth functional material

Abstract

The invention relates to a leaching device for green production of a rare earth functional material, and belongs to the technical field of rare earth material production devices. Comprising a tank body, a plurality of supporting legs annularly arranged on the outer wall of the bottom of the tank body at equal intervals, a feeding hopper arranged on one side of the top of the tank body and used for feeding materials, an eluting agent conveying pipe arranged on one side of the tank body, a stirring rod vertically and rotatably connected to the interior of the tank body, and a stirring motor fixedly arranged on the outer wall of the top of the tank body and used for driving the stirring rod to rotate. An output shaft of the stirring shaft hermetically and rotatably penetrates through the top of the tank body and is fixedly connected with the top end of the stirring rod. Two rubbing and rubbing modes can be synchronously achieved in the stirring process of materials and an eluting agent, the leaching efficiency of the materials is further improved, the power consumption in the whole process is low, damage to a motor is small, the service life of the motor is prolonged, the production cost is reduced, meanwhile, stable rotation of the motor can be guaranteed, noise is reduced, and the leaching efficiency is improved. And the whole device is more practical.

Description

Technical Field

[0001] The present invention belongs to the technical field of rare earth material production devices, and relates to a leaching device for the green production of rare earth functional materials. Background Art

[0002] Rare earth functional materials refer to new materials formed by relying on the excellent physical and chemical properties of rare earth elements and adding corresponding rare earth elements to functional materials to improve their original material properties. Common rare earth functional materials mainly include: rare earth permanent magnet materials, rare earth catalytic materials, rare earth hydrogen storage materials, rare earth luminescent materials, rare earth polishing materials, etc.

[0003] The leaching process of rare earth functional materials is the core link of hydrometallurgy, aiming to dissolve and selectively extract rare earth elements from ores, secondary resources (such as waste materials) or intermediate products through chemical or biological means. In the green production process, the leaching process needs to balance high efficiency, low pollution and resource recycling. Among them, neodymium iron boron permanent magnets are the core materials of wind power, new energy vehicles and electronic devices. After being discarded, they contain high-value rare earth elements (such as Nd, Pr, Dy) and iron (Fe). Traditional recycling processes (such as direct acid dissolution) have problems such as high acid consumption, waste of iron resources and environmental pollution. The "hydrogenation-crushing-acid leaching" combined process realizes the efficient recovery of rare earths and the recycling of iron resources through the synergistic action of physics and chemistry, and is a representative of current green recycling technologies.

[0004] The current "hydrogenation-crushing-acid leaching" combined process requires heating the waste NdFeB magnets in a hydrogen atmosphere (200 - 300 °C, 0.1 - 1 MPa) first. Hydrogen penetrates into the grain boundaries of the magnets and reacts with the rare earth phase (Nd-rich phase) to form hydrides (NdH2), resulting in volume expansion and lattice distortion. The hydrogenated magnets are broken into micron-sized powders due to internal stress, and at the same time, the Fe phase is partially oxidized to Fe3O4 (magnetite), realizing the preliminary separation of rare earths and iron. The whole process does not require mechanical crushing, reducing energy consumption by 30% - 50% and avoiding dust pollution. Then, low-concentration sulfuric acid (0.5 - 1 mol / L) or hydrochloric acid is used to leach rare earth oxides (such as Nd2O3, Pr2O3) at room temperature or slightly heated (50 - 80 °C). Iron remains in the leaching residue in the form of Fe3O4, and the rare earth leaching rate can reach over 95%, while the iron leaching rate < 5%. The leaching solution is obtained by solvent extraction (such as P507 extractant), precipitation (oxalic acid precipitation) or electrolysis to obtain rare earth oxides or metals. The acid leaching residue (Fe3O4 content > 90%) can be directly used as a raw material for steelmaking or to prepare ferrite materials, realizing the full utilization of iron resources. Finally, waste acid is recovered through evaporation crystallization or membrane technology to reduce the use of fresh acid.

[0005] In this green production process, the leaching of rare earth elements from magnet powder is achieved by the traditional acid leaching method. Generally, the magnet powder and low-concentration sulfuric acid or hydrochloric acid are first introduced into a sealed tank body, and then the leaching process is completed through high-speed stirring. Although high-speed stirring can accelerate the leaching of rare earth elements, greatly shorten the leaching time compared with direct soaking, and improve production efficiency, high-speed stirring places a large load on the motor, consumes a high amount of electricity, rotates unstably, is prone to generate a large amount of noise, and at the same time has a great impact on the service life of the motor, resulting in high production costs. Therefore, we propose a rinsing device for the green production of rare earth functional materials to solve the above-mentioned problems. Summary of the Invention

[0006] In view of this, the present invention provides a rinsing device for the green production of rare earth functional materials to solve the problems that traditional high-speed stirring places a large load on the motor, consumes a high amount of electricity, rotates unstably, is prone to generate a large amount of noise, and at the same time has a great impact on the service life of the motor, resulting in high production costs.

[0007] To achieve the above object, the present invention provides the following technical solutions: including a tank body;

[0008] A plurality of support legs are arranged at equal intervals in a ring on the outer wall of the bottom of the tank body;

[0009] A feeding hopper is arranged on one side of the top of the tank body for the feeding of materials;

[0010] A rinsing agent delivery pipe is arranged on one side of the tank body;

[0011] A stirring rod is rotatably connected vertically inside the tank body;

[0012] A stirring motor is fixedly arranged on the outer wall of the top of the tank body, and its output shaft is sealed and rotatably penetrated through the top of the tank body and fixedly connected to the top end of the stirring rod;

[0013] Two stirring plates are symmetrically arranged on both sides of the outer wall of the stirring rod for stirring the materials and the rinsing agent;

[0014] A plurality of groups of first material rubbing mechanisms are arranged at equal intervals in a ring on the inner wall of the tank body and are in transmission cooperation with the stirring rod to complete the squeezing and rubbing of the materials;

[0015] Two groups of second material rubbing mechanisms are symmetrically arranged on both sides of the outer wall of the stirring rod and are respectively used in cooperation with the two stirring plates to complete the squeezing and rubbing of the materials in another way through the rotation of the stirring rod;

[0016] A discharge pipe is arranged on one side of the bottom of the tank body for discharging materials;

[0017] An exhaust pipe is arranged on one side of the top of the tank body for discharging waste gas.

[0018] Furthermore, the first material rubbing mechanism includes a mounting block fixedly connected to the inner wall of the tank body. A rotating rod rotatably penetrates through the top of the mounting block, and the bottom end of the rotating rod extends downward. A connecting strip is fixedly connected to the outer wall of the rotating rod and is located below the mounting block. One side of the connecting strip away from the rotating rod is fixedly connected with an arc-shaped rubbing plate.

[0019] Furthermore, a plurality of fixing plates corresponding to and cooperating with the corresponding arc-shaped rubbing plates are fixedly connected to the inner wall of the tank body at equal intervals in a ring shape. An arc-shaped concave surface cooperating with the arc-shaped rubbing plate is opened on one side of the fixing plate, and a gap for the material to pass through is left between the arc-shaped rubbing plate and the arc-shaped concave surface.

[0020] Furthermore, two cross bars are symmetrically and fixedly connected to the upper side of the outer wall of the stirring rod. The ends of the two cross bars away from each other are fixedly connected to the same rotating ring, and the outer wall of the rotating ring fits and rotates with the inner wall of the tank body.

[0021] Furthermore, an internal gear ring is fixedly connected to the bottom of the inner wall of the rotating ring. The tops of a plurality of rotating rods all extend upward and are fixedly sleeved with transmission gears meshing with the internal gear ring.

[0022] Furthermore, first inclined surfaces are opened at both edges of the two sides of the fixing plate, and the arc-shaped concave surface is located between the two first inclined surfaces and is in contact and cooperation therewith.

[0023] Furthermore, a cross-shaped mounting seat is fixedly sleeved on the outer wall of the stirring rod. Two vertical rods are symmetrically and fixedly connected to the bottoms of two opposite extended sides of the cross-shaped mounting seat, and two stirring plates are respectively fixedly connected to the bottoms of adjacent two vertical rods.

[0024] Furthermore, the second material rubbing mechanism includes a collar fixedly sleeved on the outer wall of the stirring rod, and the top of the collar is in contact with the bottom of the cross-shaped mounting seat. Two convex portions are symmetrically integrally provided on both sides of the outer wall of the collar. Moving rods are fixedly connected to the tops of the two convex portions. Arc-shaped holes for the moving rods to pass through are opened on the tops of two opposite extended sides of the cross-shaped mounting seat.

[0025] Furthermore, mounting cavities are opened in the interiors of two opposite extended sides of the cross-shaped mounting seat. Rotating shafts are rotatably connected to the bottom inner walls of the two mounting cavities. Torsion springs are sleeved on the outer walls of the two rotating shafts, and the two ends of each torsion spring are respectively fixedly connected to the bottom inner wall of the mounting cavity and the outer wall of the rotating shaft.

[0026] Furthermore, the tops of the two rotating shafts both extend above the top of the cross-shaped mounting seat and are fixedly sleeved with rotating blocks. The bottoms of the two rotating blocks are in contact with the top of the cross-shaped mounting seat. Strip-shaped holes for the corresponding moving rods to pass through are opened on the tops of the two rotating blocks.

[0027] Furthermore, the two rotating blocks are fixedly connected to a toggle rod on one side away from each other, and the inner wall of the tank is symmetrically fixedly connected to two arc-shaped bars that intermittently interfere with one end of the toggle rod.

[0028] Furthermore, two connecting rods are symmetrically fixedly connected to the bottom of the collar, and one end of each connecting rod is fixedly connected to a flat rubbing board that is adjacent to the corresponding stirring board.

[0029] Furthermore, the outer wall sliding sleeve of the movable rod is provided with a sleeve, and the bottom end of the sleeve contacts the top of the rotating block. The outer wall sleeve of the movable rod is provided with a reset spring located inside the sleeve, and the two ends of the reset spring are respectively fixedly connected to the bottom inner wall of the sleeve and the outer wall of the movable rod.

[0030] Furthermore, two fixing blocks that intermittently interfere with the top of the movable rod are symmetrically fixedly connected to the inner wall of the top of the tank body, and the bottoms of the two fixing blocks are both provided with a second inclined surface.

[0031] The beneficial effects of the present invention are:

[0032] The present invention drives the stirring rod to rotate through the stirring motor, which can drive the stirring plate to rotate to achieve mixing and stirring of the material and the eluent, thereby accelerating the leaching efficiency. At the same time, it can also drive the arc-shaped rubbing plate to rotate, thereby achieving a first friction effect on the flowing material. In addition, by rotating and moving the flat rubbing plate up and down, the stirring plate cooperates to complete the extrusion and clamping of the material, and achieve a second friction effect. Through the two friction modes, the leaching efficiency of the material can be further accelerated during the low-speed operation of the stirring motor. Not only is the entire process low in power consumption, but also little damage to the motor, thereby extending the service life of the motor and reducing production costs. At the same time, it can also ensure the smooth rotation of the motor, reduce noise, and make the entire device more practical.

[0033] Other advantages, objects, and features of the present invention will be described in part in the following description and, in part, will be apparent to those skilled in the art upon examination of the following description or may be learned from practice of the present invention. The objects and other advantages of the present invention may be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be described in detail below with reference to the accompanying drawings, in which:

[0035] Figure 1 It is a three-dimensional diagram of the overall structure of the present invention;

[0036] Figure 2 It is a three-dimensional cross-sectional view of the overall structure of the present invention;

[0037] Figure 3 It is a three-dimensional cross-sectional view of the connection structure between the stirring mechanism inside the tank and the second kneading mechanism of the present invention;

[0038] Figure 4 It is a three-dimensional cross-sectional view of the connection structure between the stirring rod inside the tank body and the first kneading mechanism of the present invention;

[0039] Figure 5 It is a three-dimensional diagram of the overall connection structure of the stirring mechanism, the first material kneading mechanism and the second material kneading mechanism of the present invention;

[0040] Figure 6 For the present invention Figure 5 A bottom-up perspective diagram of the overall structure;

[0041] Figure 7 It is a three-dimensional diagram of the partial connection structure of the stirring mechanism and the second kneading mechanism of the present invention;

[0042] Figure 8 It is a three-dimensional cross-sectional view of the cross mounting seat and the collar connection structure of the present invention;

[0043] Figure 9 This is a three-dimensional exploded view of the coordinated structure of the arc-shaped washboard and the fixed plate of the present invention;

[0044] Figure 10 A three-dimensional diagram of the fixing plate structure of the present invention;

[0045] Figure 11 It is a three-dimensional diagram of the fixing block structure of the present invention.

[0046] Reference numerals: 1, tank body; 2, support leg; 3, rotating ring; 4, stirring rod; 5, eluent delivery pipe; 6, cross mounting seat; 61, arc-shaped hole; 62, mounting cavity; 7, feeding hopper; 8, horizontal bar; 9, mounting block; 10, vertical bar; 11, stirring plate; 12, stirring motor; 13, discharge pipe; 14, collar; 141, raised portion; 15, arc-shaped bar; 16, exhaust pipe; 17, inner gear ring; 18. Rotating rod; 19. Transmission gear; 20. Connecting bar; 21. Arc-shaped washboard; 22. Movable rod; 23. Rotating shaft; 24. Fixed plate; 241. Arc-shaped concave surface; 242. First inclined surface; 25. Fixed block; 251. Second inclined surface; 26. Connecting rod; 27. Flat washboard; 28. Rotating block; 281. Strip hole; 29. Torsion spring; 30. Toggle rod; 31. Sleeve; 32. Return spring. DETAILED DESCRIPTION

[0047] The following describes the implementation manners of the present invention through specific examples. Those skilled in the art can easily understand the other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation manners. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the drawings provided in the following embodiments only illustrate the basic concept of the present invention in a schematic manner. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0048] Embodiment 1: As Figures 1 - 7 shown, a leaching device for the green production of rare earth functional materials includes a tank body 1, a plurality of support legs 2, a stirring rod 4, a leaching agent delivery pipe 5, a cross mounting seat 6, a feeding hopper 7, two stirring plates 11, a stirring motor 12, a discharge pipe 13, and an exhaust pipe 16. The plurality of support legs 2 are arranged on the outer wall of the bottom of the tank body 1 in an annular and equidistant manner. The feeding hopper 7 is arranged on one side of the top of the tank body 1 for the feeding of materials. The leaching agent delivery pipe 5 is arranged on one side of the tank body 1 for the delivery of the leaching agent. The stirring rod 4 is rotatably connected vertically inside the tank body 1. The stirring motor 12 is fixedly arranged on the outer wall of the top of the tank body 1, and its output shaft is rotatably sealed through the top of the tank body 1 and fixedly connected to the top end of the stirring rod 4. Starting the stirring motor 12 can drive the stirring rod 4 to rotate. The two stirring plates 11 are symmetrically arranged on both sides of the outer wall of the stirring rod 4 for stirring the materials and the leaching agent. The discharge pipe 13 is arranged on one side of the bottom of the tank body 1 for discharging materials. The exhaust pipe 16 is arranged on one side of the top of the tank body 1 for discharging waste gas. The cross mounting seat 6 is fixedly sleeved on the outer wall of the stirring rod 4. Two vertical rods 10 are symmetrically and fixedly connected to the bottom of two opposite extending edges on the cross mounting seat 6, and the two stirring plates 11 are respectively fixedly connected to the bottom ends of the adjacent two vertical rods 10. When starting the stirring motor 12 to drive the stirring rod 4 to rotate, the cross mounting seat 6 can be driven to rotate simultaneously, and then the two stirring plates 11 can be driven to rotate through the vertical rods 10, so as to realize the mixing and stirring effect of the materials and the leaching agent.

[0049] The present invention can be used in the field of leaching devices for the green production of rare earth functional materials, and can also be applicable to other fields of the present invention.

[0050] Embodiment 2: This embodiment is a further improvement of the previous embodiment: As Figures 1 - 10As shown in the figure, the elution device further includes a plurality of first material rubbing mechanisms arranged at equal intervals in a ring shape on the inner wall of the tank body 1, which are in transmission cooperation with the stirring rod 4 to complete the extrusion and rubbing of the materials. The first material rubbing mechanism includes a mounting block 9 fixedly connected to the inner wall of the tank body 1. A rotating rod 18 rotatably penetrates through the top of the mounting block 9, and the bottom end of the rotating rod 18 extends downward. A connecting strip 20 is fixedly connected to the outer wall of the rotating rod 18 and is located below the mounting block 9. One side of the connecting strip 20 away from the rotating rod 18 is fixedly connected with an arc-shaped rubbing plate 21. A plurality of fixing plates 24 corresponding to and cooperating with the corresponding arc-shaped rubbing plates 21 are fixedly connected to the inner wall of the tank body 1 at equal intervals in a ring shape. An arc-shaped concave surface 241 cooperating with the arc-shaped rubbing plate 21 is formed on one side of the fixing plate 24, and a gap for the material to pass through is left between the arc-shaped rubbing plate 21 and the arc-shaped concave surface 241. When the rotating rod 18 rotates, the arc-shaped rubbing plate 21 can be driven to rotate through the connecting strip 20. Since the material is soaked in the eluent and the stirring plate 11 is driven to rotate by the stirring rod 4 to realize the stirring of the material and the eluent, the material will flow in the tank body 1 together with the eluent. When the material passes through the interval position of the arc-shaped concave surface 241, at this time, the arc-shaped rubbing plate 21 rotates and moves correspondingly with the arc-shaped concave surface 241 during the rotation process, and will moderately extrude and rub the material in the interval. By cooperating with stirring in this way, the leaching efficiency of rare earth elements inside the material can be improved. In addition, the size of the gap remaining between the arc-shaped rubbing plate 21 and the arc-shaped concave surface 241 can be adaptively set according to the particle size of the material after being broken, so that the granular material can pass through the gap, but certain friction will be generated during the passing process. That is to say, this device can be applied to the elution of some rare earth functional materials, and the material will be broken into particles of a certain size through a crushing process before elution. Through this device, this part of rare earth materials can be efficiently eluted, improving the production efficiency.

[0051] In one aspect of this embodiment, two cross bars 8 are symmetrically and fixedly connected to the upper side of the outer wall of the stirring rod 4. The ends of the two cross bars 8 away from each other are fixedly connected to the same rotating ring 3, and the outer wall of the rotating ring 3 is in rotational fit with the inner wall of the tank body 1. The bottom of the inner wall of the rotating ring 3 is fixedly connected with an internal gear ring 17. The tops of the plurality of rotating rods 18 all extend upward and are fixedly sleeved with transmission gears 19 meshing with the internal gear ring 17. Starting the stirring motor 12 to drive the stirring rod 4 to rotate can drive the two stirring plates 11 to rotate, realizing the mixing and stirring between the rare earth material and the eluent, and improving the leaching efficiency of the rare earth material in the eluent. At the same time, during the rotation of the stirring rod 4, the rotating ring 3 can also be driven to rotate synchronously through the two cross bars 8, and through the meshing movement of the internal gear ring 17 and the plurality of transmission gears 19, a plurality of rotating rods 18 can be driven to rotate simultaneously, and then the arc-shaped rubbing plates 21 can be driven to rotate. By rubbing the rare earth material, the leaching efficiency of the rare earth material is further improved, thereby shortening the leaching time and improving the overall production efficiency.

[0052] In one aspect of this embodiment, first inclined surfaces 242 are provided on both side edges of the fixing plate 24, and the arc-shaped concave surface 241 is located between the two first inclined surfaces 242 and is in contact and cooperation therewith. When the material flows during the stirring process, it can be guided by the first inclined surfaces 242 so that the material flows through the arc-shaped concave surface 241, avoiding the situation of dead corners.

[0053] Embodiment 3: This embodiment is a further improvement of the previous embodiment: As Figures 1 - 11 shown, the rinsing device further includes two groups of second material rubbing mechanisms symmetrically arranged on both outer sides of the outer wall of the stirring rod 4 and respectively cooperating with the two stirring plates 11, and the squeezing and rubbing of the material in another way is completed by the rotation of the stirring rod 4. The second material rubbing mechanism includes a collar 14 fixedly sleeved on the outer wall of the stirring rod 4, and the top of the collar 14 is in contact with the bottom of the cross-shaped mounting seat 6. Two convex portions 141 are symmetrically and integrally provided on both outer sides of the outer wall of the collar 14, and movable rods 22 are fixedly connected to the tops of the two convex portions 141. Arc-shaped holes 61 through which the movable rods 22 are inserted and matched are provided at the tops of two opposite extending edges on the cross-shaped mounting seat 6. When the movable rods 22 move in the arc-shaped holes 61, the collar 14 can be driven to rotate, and as the stirring rod 4 drives the cross-shaped mounting seat 6 to rotate, the collar 14 can also be driven to rotate synchronously through the movable rods 22.

[0054] In one aspect of this embodiment, mounting cavities 62 are formed inside two opposite extending edges of the cross-shaped mounting base 6. The inner walls of the bottoms of the two mounting cavities 62 are rotatably connected to rotating shafts 23. Torsion springs 29 are sleeved on the outer walls of the two rotating shafts 23, and the two ends of the torsion springs 29 are respectively fixedly connected to the inner wall of the bottom of the mounting cavity 62 and the outer wall of the rotating shaft 23. The tops of the two rotating shafts 23 extend above the top of the cross-shaped mounting base 6 and are fixedly sleeved with rotating blocks 28. The bottoms of the two rotating blocks 28 are in contact with the top of the cross-shaped mounting base 6. Bar-shaped holes 281 that are penetrated and matched with the corresponding movable rods 22 are formed at the tops of the two rotating blocks 28. When the rotating block 28 rotates, the torsion spring 29 can be deformed by the rotation of the rotating shaft 23, and through the cooperation of the bar-shaped hole 281 and the movable rod 22, the bar-shaped hole 281 can drive the movable rod 22 to move in the arc-shaped hole 61 as the rotating block 28 rotates and moves, thereby driving the collar 14 to rotate. Stirring rods 30 are fixedly connected to the opposite sides of the two rotating blocks 28 away from each other. Two arc-shaped strips 15 that are intermittently in contact and matched with one end of the stirring rod 30 are symmetrically and fixedly connected to the inner wall of the tank body 1. When the stirring rod 4 drives the cross-shaped mounting base 6 to rotate, through the limiting cooperation of the movable rod 22 and the bar-shaped hole 281, the collar 14 can be driven to rotate synchronously, and the stirring rod 30 also rotates and moves synchronously with the rotating block 28. When one end of the stirring rod 30 abuts against one end of the arc-shaped strip 15, as the rotating block 28 drives the stirring rod 30 to continue to move, the stirring rod 30 will drive the rotating block 28 to rotate by abutting against the arc-shaped strip 15, and then drive the movable rod 22 to move in the arc-shaped hole 61 through the bar-shaped hole 281. When one end of the stirring rod 30 abuts against and moves on the inner wall of the arc-shaped strip 15, it is always in an inclined state, so that the rotating block 28 always maintains a rotating state, and the torsion spring 29 remains twisted. When the stirring rod 30 disengages from the arc-shaped strip 15, under the elastic force of the torsion spring 29, the rotating shaft 23 can be driven to rotate back to its original position, and at the same time, the rotating block 28 is driven to rotate back to its original position, and then the movable rod 22 is driven to rotate and move back to its original position, and the limiting movement is realized again through the arc-shaped hole 61.

[0055] In one aspect of this embodiment, two connecting rods 26 are symmetrically fixedly connected to the bottom of the collar 14. One end of each connecting rod 26 is fixedly connected to a planar washboard 27 adjacent to the corresponding agitating plate 11. When the collar 14 rotates, the connecting rods 26 can drive the planar washboard 27 to rotate synchronously. The collar 14, in turn, rotates synchronously with the cross mounting base 6, thereby enabling the planar washboard 27 to rotate synchronously with the agitating plate 11. When the collar 14 rotates independently while rotating synchronously with the cross mounting base 6, it can drive the planar washboard 27 toward the agitating plate 11. The planar washboard 27 is positioned behind the adjacent agitating plate 11 in the direction of rotation, thereby squeezing and clamping the material between the planar washboard 27 and the agitating plate 11. The outer wall of the movable rod 22 is slidably sleeved with a sleeve 31, and the bottom end of the sleeve 31 contacts the top of the rotating block 28. The outer wall of the movable rod 22 is sleeved with a return spring 32 located inside the sleeve 31. The two ends of the return spring 32 are respectively fixedly connected to the bottom inner wall of the sleeve 31 and the outer wall of the movable rod 22. The top inner wall of the tank body 1 is symmetrically fixedly connected to two fixed blocks 25 that intermittently contact the top of the movable rod 22. The bottoms of the two fixed blocks 25 are each provided with a second inclined surface 251. When one end of the toggle rod 30 contacts and moves on the curved bar 15, the automatic rotation of the collar 14 can drive the flat washboard 27 to rotate and move, and cooperate with the stirring plate 11 to complete the extrusion and clamping of the material. At the same time, during the synchronous rotation of the movable rod 22, its top will conflict with the second inclined surface 251 of the fixed block 25, and drive the movable rod 22 downward for a distance. At this time, the return spring 32 is compressed, and the movable rod 22 simultaneously drives the collar 14 to move downward on the stirring rod 4, and then drives the flat wash plate 27 downward through the connecting rod 26, achieving another friction effect on the extruded material. When the top of the movable rod 22 is released from the conflict with the fixed block 25, the elastic force of the return spring 32 drives the movable rod 22 to move upward and reset, and then drives the collar 14 to move upward and limit it by conflicting with the bottom of the cross mounting seat 6. At the same time, the connecting rod 26 drives the flat wash plate 27 to move upward and reset, completing a reciprocating friction effect. By friction on the material, the leaching efficiency of rare earth elements can be greatly improved, and the leaching effect is better and faster than that of the traditional stirring method. The technical solution of the present application can further improve the leaching effect of rare earth functional materials without the need for high-speed rotation of the stirring motor 12.

[0056] However, as is well known to those skilled in the art, the working principle and wiring method of the stirring motor 12 are commonplace, and are conventional means or common knowledge, and will not be elaborated here. Those skilled in the art can make any selection according to their needs or convenience.

[0057] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the purpose and scope of the present technical solution, and they should all be covered by the scope of the claims of the present invention.

Claims

1. A leaching device for the green production of rare earth functional materials, characterized in that, Comprising: A tank body (1); A plurality of support legs (2), which are arranged equidistantly in a ring on the outer wall of the bottom of the tank body (1); A feeding hopper (7), which is arranged on one side of the top of the tank body (1) for feeding materials; A eluent delivery pipe (5), which is arranged on one side of the tank body (1); A stirring rod (4), which is rotatably connected vertically inside the tank body (1); A stirring motor (12), which is fixedly arranged on the outer wall of the top of the tank body (1), and its output shaft rotatably penetrates the top of the tank body (1) in a sealed manner and is fixedly connected to the top end of the stirring rod (4); Two stirring plates (11), which are symmetrically arranged on both sides of the outer wall of the stirring rod (4) for stirring materials and eluent; Multiple groups of first material rubbing mechanisms, which are arranged equidistantly in a ring on the inner wall of the tank body (1) and are in transmission cooperation with the stirring rod (4) to complete the extrusion and rubbing of materials; Two groups of second material rubbing mechanisms, which are symmetrically arranged on both sides of the outer wall of the stirring rod (4) and are respectively used in cooperation with the two stirring plates (11), and complete the extrusion and rubbing of materials in another way through the rotation of the stirring rod (4); A discharge pipe (13), which is arranged on one side of the bottom of the tank body (1) for discharging materials; An exhaust pipe (16), which is arranged on one side of the top of the tank body (1) for discharging waste gas.

2. The elution device for the green production of rare earth functional materials according to claim 1, characterized in that, The first material rubbing mechanism includes a mounting block (9) fixedly connected to the inner wall of the tank body (1). A rotating rod (18) rotatably penetrates the top of the mounting block (9), and the bottom end of the rotating rod (18) extends downward. A connecting strip (20) is fixedly connected to the outer wall of the rotating rod (18) below the mounting block (9). One side of the connecting strip (20) away from the rotating rod (18) is fixedly connected with an arc-shaped rubbing plate (21); A plurality of fixing plates (24) corresponding to and cooperating with the corresponding arc-shaped rubbing plates (21) are fixedly connected to the inner wall of the tank body (1) equidistantly in a ring. An arc-shaped concave surface (241) cooperating with the arc-shaped rubbing plate (21) is provided on one side of the fixing plate (24), and a gap for materials to pass through is left between the arc-shaped rubbing plate (21) and the arc-shaped concave surface (241).

3. The elution device for the green production of rare earth functional materials according to claim 2, wherein, Two cross bars (8) are symmetrically and fixedly connected to the upper side of the outer wall of the stirring rod (4). The ends of the two cross bars (8) away from each other are fixedly connected to the same rotating ring (3), and the outer wall of the rotating ring (3) is in rotational fit with the inner wall of the tank body (1); An internal gear ring (17) is fixedly connected to the bottom of the inner wall of the rotating ring (3). The top ends of a plurality of rotating rods (18) all extend upward and are fixedly sleeved with transmission gears (19) meshing with the internal gear ring (17).

4. A leaching device for the green production of rare earth functional materials according to claim 2 or 3, characterized in that, First inclined surfaces (242) are provided at both edges of the two sides of the fixing plate (24), and the arc-shaped concave surface (241) is located between the two first inclined surfaces (242) and is in butt joint cooperation.

5. The elution device for the green production of rare earth functional materials according to claim 1 or 3, characterized in that, A cross mounting seat (6) is fixedly sleeved on the outer wall of the stirring rod (4). Two vertical rods (10) are symmetrically and fixedly connected to the bottom of two opposite extended sides of the cross mounting seat (6), and the two stirring plates (11) are respectively fixedly connected to the bottom ends of the adjacent two vertical rods (10).

6. The elution device for the green production of rare earth functional materials according to claim 5, characterized in that, The second material rubbing mechanism includes a collar (14) fixedly sleeved on the outer wall of the stirring rod (4), and the top of the collar (14) is in contact with the bottom of the cross mounting base (6). Two convex portions (141) are symmetrically and integrally provided on both sides of the outer wall of the collar (14). The tops of the two convex portions (141) are fixedly connected with movable rods (22). Arc-shaped holes (61) that are penetrated and matched with the movable rods (22) are formed at the tops of two opposite extending edges on the cross mounting base (6).

7. The elution device for the green production of rare earth functional materials according to claim 6, characterized in that Installation cavities (62) are formed inside two opposite extending edges of the cross mounting base (6). Rotating shafts (23) are rotatably connected to the bottom inner walls of the two installation cavities (62). Torsion springs (29) are sleeved on the outer walls of the two rotating shafts (23), and the two ends of each torsion spring (29) are fixedly connected with the bottom inner wall of the corresponding installation cavity (62) and the outer wall of the rotating shaft (23) respectively; The tops of the two rotating shafts (23) extend above the top of the cross mounting base (6) and are fixedly sleeved with rotating blocks (28). The bottoms of the two rotating blocks (28) are in contact with the top of the cross mounting base (6). Strip-shaped holes (281) that are penetrated and matched with the corresponding movable rods (22) are formed at the tops of the two rotating blocks (28).

8. The elution device for the green production of rare earth functional materials according to claim 7, characterized in that, A dialing rod (30) is fixedly connected to one side of each of the two rotating blocks (28) away from each other. Two arc-shaped strips (15) that are intermittently in contact and matched with one end of the dialing rod (30) are symmetrically and fixedly connected to the inner wall of the tank body (1).

9. The elution device for the green production of rare earth functional materials according to claim 8, characterized in that, Two connecting rods (26) are symmetrically and fixedly connected to the bottom of the collar (14). A flat rubbing plate (27) that is adjacent and matched with the corresponding stirring plate (11) is fixedly connected to one end of each of the two connecting rods (26).

10. A leaching device for the green production of rare earth functional materials according to claim 9, characterized in that, A sleeve (31) is slidably sleeved on the outer wall of the movable rod (22), and the bottom end of the sleeve (31) is in contact with the top of the rotating block (28). A return spring (32) is sleeved on the outer wall of the movable rod (22) and located inside the sleeve (31). The two ends of the return spring (32) are fixedly connected with the bottom inner wall of the sleeve (31) and the outer wall of the movable rod (22) respectively; Two fixing blocks (25) that are intermittently in contact and matched with the tops of the movable rods (22) are symmetrically and fixedly connected to the top inner wall of the tank body (1). Second inclined surfaces (251) are formed at the bottoms of the two fixing blocks (25).

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