A method for industrial production of high-purity neodymium oxide

Abstract

This invention discloses a method for the industrial production of high-purity neodymium oxide, relating to the field of rare earth hydrometallurgy. The method is implemented using equipment for industrial production of high-purity neodymium oxide, which includes a shell assembly. Inside the shell assembly is a drive mechanism, and inside the drive mechanism is a sealing mechanism. Outside the drive mechanism, from top to bottom, are a suction mechanism and a supporting rotation mechanism. This invention allows for the calcination of the solid phase after the liquid phase transfer. Simultaneously, the solid phase can be stirred during calcination, accelerating the calcination speed while preventing agglomeration. Furthermore, after calcination, centrifugal force can be used to effectively output the neodymium oxide product, avoiding residue. This improves the production efficiency of neodymium oxide while reducing production costs and ensuring a high-purity neodymium oxide yield.

Description

Technical Field

[0001] This invention relates to the field of rare earth hydrometallurgy, and in particular to a method for the industrial production of high-purity neodymium oxide. Background Technology

[0002] In recent years, my country has also conducted a lot of research on the separation technology of high-purity rare earths, especially high-purity neodymium oxide, which has excellent optoelectronic ceramic properties and is widely used in high-end magnetic materials, aerospace equipment, national defense and artificial gemstones.

[0003] The invention patent with authorization announcement number CN 105883889 B discloses a method for industrial production of high-purity neodymium oxide, comprising the following steps: (1) mixing a concentrated material liquid containing lanthanum, cerium, praseodymium, and neodymium with an organic phase, and extracting it through a lanthanum-cerium-praseodymium / praseodymium-neodymium fuzzy extraction module. The outlet aqueous phase of the fuzzy extraction module contains lanthanum, cerium, and praseodymium. The outlet organic phase after washing with a washing solution contains praseodymium and neodymium. (2) separating praseodymium and neodymium in the organic material liquid containing praseodymium and neodymium obtained in step (1) through a praseodymium / neodymium separation module. The outlet aqueous phase of the praseodymium / neodymium separation module is a praseodymium concentrate, which is used as the washing solution in the lanthanum-cerium-praseodymium / praseodymium-neodymium fuzzy extraction module in step (1). The outlet aqueous phase of the praseodymium / neodymium separation module contains high-purity neodymium with a purity of 99.99% to 99.999%. (3) The neodymium-containing liquid obtained in step (2) is subjected to precipitation, calcination, and packaging to obtain a high-purity neodymium oxide product. The method used in this invention has the characteristics of low production cost, high product purity, and the ability to carry out large-scale continuous production.

[0004] However, after practical application by those skilled in the art, the above methods still have some drawbacks. The most obvious one is that when using the traditional method to precipitate neodymium-containing liquid, after precipitation, the liquid phase must first be separated and output. Only after the liquid phase is output can the solid phase be discharged. After the solid phase is discharged, it needs to be transferred to the roasting equipment for calcination. The operation process is cumbersome and time-consuming, which has a significant impact on the production efficiency and production cost of high-purity neodymium oxide products.

[0005] In addition, when the solid phase is discharged, it still contains a small amount of liquid phase. Therefore, the solid phase that agglomerates under the action of the liquid phase is not only difficult to discharge, but also a small amount of solid phase will remain inside the equipment and cannot be effectively output, which leads to a decrease in the final yield of high-purity neodymium oxide.

[0006] Therefore, it is necessary to invent a method for the industrial production of high-purity neodymium oxide to solve the above problems. Summary of the Invention

[0007] The purpose of this invention is to provide a method for the industrial production of high-purity neodymium oxide, so as to solve the problems mentioned in the background art.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a method for industrial production of high-purity neodymium oxide, wherein the method for industrial production of high-purity neodymium oxide is implemented by an equipment for industrial production of high-purity neodymium oxide, the equipment for industrial production of high-purity neodymium oxide includes a shell assembly, a drive mechanism is provided inside the shell assembly, a sealing mechanism is provided inside the drive mechanism, and a suction mechanism and a supporting rotation mechanism are arranged sequentially from top to bottom on the outside of the drive mechanism;

[0009] The outer shell assembly includes a heating vessel, a partition plate, a stirring rod, and a limiting slide groove;

[0010] The partition plate is fixedly installed inside the heating vessel, and the partition plate divides the inner cavity of the heating vessel into an upper chamber and a lower chamber. Multiple stirring rods are provided, and the multiple stirring rods are evenly fixedly installed on the inner wall of the lower chamber. Two limiting slide grooves are provided, and the two limiting slide grooves are respectively opened on both sides of the inner cavity of the upper chamber.

[0011] The drive mechanism includes a reciprocating screw, a drive motor, a hot gas input pipe, an I-shaped channel, a valve, and an air outlet.

[0012] The reciprocating screw passes through the heating vessel and the partition plate and is rotatably connected to the heating vessel and the partition plate via bearings. The drive motor is fixedly installed on the top of the heating vessel and is connected to the reciprocating screw for transmission. The hot gas input pipe is connected to the bottom end of the reciprocating screw via a rotary joint. The I-shaped channel is opened on the reciprocating screw and connects the upper chamber and the lower chamber. There are two valves and two air outlets. The two valves are respectively located inside the two openings at the top of the I-shaped channel, and the two air outlets are opened at the bottom of both sides of the reciprocating screw.

[0013] Preferably, the sealing mechanism includes a longitudinal slide bar, a sealing post, a transverse slide bar, and a movable ring.

[0014] Preferably, the longitudinal slide bar is slidably disposed inside the reciprocating screw in a vertical direction, the sealing column is fixedly disposed at the bottom end of the longitudinal slide bar and seals the vent hole, the transverse slide bar is fixedly disposed at the top end of the longitudinal slide bar, and the movable ring is sleeved on the outside of the reciprocating screw and fixedly connected to the transverse slide bar.

[0015] Preferably, the suction mechanism includes a lifting plate, a first spring, a piston plate, and a limiting slider.

[0016] Preferably, the lifting plate, the first spring, and the piston plate are sequentially sleeved on the outside of the reciprocating screw from top to bottom. The lifting plate is connected to the reciprocating screw in a driving connection. The first spring is fixedly connected between the lifting plate and the piston plate. The piston plate is slidably connected to the reciprocating screw. The movable ring is rotatably mounted on the top of the piston plate through a bearing. There are two limiting sliders, which are slidably mounted inside two limiting grooves and are both fixedly connected to the piston plate.

[0017] Preferably, the supporting rotation mechanism includes a drive ring, a support plate, a connecting arm, a locking groove, a mounting chamber, a locking block, an outer plate, and a second spring.

[0018] Preferably, the drive ring and the support plate are sequentially sleeved on the outside of the reciprocating screw from top to bottom. Both the drive ring and the support plate are rotatably connected to the reciprocating screw via bearings. The support plate is rotatably connected to the inner wall of the housing assembly via bearings. Multiple connecting arms and locking slots are provided. Multiple connecting arms are evenly fixed between the drive ring and the support plate. Multiple locking slots are evenly opened at the bottom inner side of the drive ring. The mounting chamber is opened inside the reciprocating screw. The locking block slides through the reciprocating screw and the locking block. The outer sleeve is fixedly sleeved on the outside of the locking block and slidably disposed inside the mounting chamber. The second spring is fixedly disposed between the inner wall of the mounting chamber and the outer sleeve.

[0019] Preferably, the method specifically includes the following steps:

[0020] S1. Add the neodymium-containing liquid to the lower chamber and let it settle. After the sedimentation is complete, start the drive motor. After the drive motor starts, it drives the reciprocating screw to rotate continuously. When the reciprocating screw rotates, it drives the lifting plate to rise continuously. When the lifting plate rises, it drives the piston plate to rise continuously through the first spring. When the piston plate rises, it drives the limiting slider to slide continuously upward inside the limiting groove. At the same time, a negative pressure is formed in the upper chamber. The negative pressure is in the lower chamber through the action of the I-beam channel, which in turn continuously draws the liquid phase. The liquid phase enters the upper chamber through the I-beam channel and the valve and is continuously collected.

[0021] S2. During the rise of the piston plate, the horizontal slide bar is driven to rise continuously through the moving ring. When the horizontal slide bar rises, the sealing column is driven to rise continuously through the longitudinal slide bar. When the rising distance of the lifting plate reaches the first threshold, the liquid phase suction is completed. At the same time, the top of the sealing column contacts the locking block. Subsequently, as the lifting plate continues to rise, the sealing column pushes the locking block. The locking block is compressed through the outer sleeve plate to compress the second spring and moves towards the locking groove.

[0022] S3. When the lifting plate reaches the second threshold distance, the locking block is inserted into the locking groove. At this time, as the reciprocating screw continues to rotate, the reciprocating screw drives the drive ring to rotate continuously through the locking block and the locking groove. When the drive ring rotates, it drives the support plate to rotate continuously through the connecting arm, thereby driving the solid phase to rotate synchronously. During the rotation of the solid phase, multiple relatively rotating stirring rods continuously stir the solid phase.

[0023] S4. When the lifting plate reaches the third threshold distance, the sealing column releases the blockage of the vent. At this time, the hot air entering the reciprocating screw through the hot air input pipe blows continuously towards the fixed part through the vent, thereby heating the solid phase. When the lifting plate reaches the fourth threshold distance, the vent is completely unsealed. At the same time, the limiting slider moves to the top of the inner side of the limiting slide groove. Due to the obstruction of the limiting slide groove, the limiting slider cannot continue to rise. Subsequently, as the lifting plate continues to rise, the first spring is continuously stretched.

[0024] S5. When the lifting plate reaches the fifth threshold distance, the lifting plate moves to the top of the reciprocating thread on the outside of the reciprocating screw. Subsequently, as the reciprocating screw continues to rotate, the lifting plate continues to descend along the reciprocating screw. At the same time as the lifting plate descends, the liquid phase is output through the output pipe on the right side of the upper chamber.

[0025] S6. When the lifting plate descends to the sixth threshold, the sealing column seals the air outlet again. At this time, the neodymium oxide product obtained after heating moves outward continuously under the action of centrifugal force generated during the rotation of the support plate, and is output through the output pipe on the right side of the lower chamber.

[0026] S7. When the lifting plate descends to the seventh threshold, all neodymium oxide products are output. At the same time, the lifting plate descends to the initial position, that is, the bottom of the reciprocating thread on the outside of the reciprocating screw, and the drive motor is stopped, waiting for the next processing.

[0027] The technical effects and advantages of this invention are as follows:

[0028] This invention comprises a driving mechanism, a sealing mechanism, a suction mechanism, and a supporting rotation mechanism. The driving mechanism powers the suction mechanism, which in turn draws the liquid phase from the lower chamber. Simultaneously, the suction mechanism drives the sealing mechanism upwards, triggering both the supporting rotation mechanism and the driving mechanism. Once triggered, the supporting rotation mechanism rotates continuously under the drive mechanism, generating centrifugal force. The driving mechanism, in turn, continuously supplies hot gas to heat the solid phase. Compared to similar devices and methods in the prior art, this invention allows for the calcination of the solid phase immediately after the liquid phase transfer. During calcination, the solid phase can be stirred, accelerating the calcination process while preventing agglomeration. Furthermore, after calcination, centrifugal force allows for effective output of the neodymium oxide product, avoiding residue. This improves neodymium oxide production efficiency, reduces production costs, and ensures a high-purity neodymium oxide yield, making it more suitable for the industrial production of high-purity neodymium oxide. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall front cross-sectional structure of the present invention.

[0030] Figure 2 This is a front view cross-sectional structural diagram of the housing assembly of the present invention.

[0031] Figure 3 This is a front view cross-sectional structural diagram of the suction mechanism of the present invention.

[0032] Figure 4 This is a front cross-sectional structural diagram of a portion of the sealing mechanism and the supporting rotation mechanism of the present invention.

[0033] Figure 5 This is a front view cross-sectional structural diagram of the supporting rotation mechanism of the present invention.

[0034] In the diagram: 1. Outer shell assembly; 11. Heating vessel; 12. Divider plate; 13. Stirring rod; 14. Limiting slide groove; 2. Drive mechanism; 21. Reciprocating screw; 22. Drive motor; 23. Hot gas input pipe; 24. I-shaped channel; 25. Valve; 26. Vent; 3. Sealing mechanism; 31. Longitudinal slide bar; 32. Sealing column; 33. Transverse slide bar; 34. Moving ring; 4. Suction mechanism; 41. Lifting plate; 42. First spring; 43. Piston plate; 44. Limiting slider; 5. Supporting rotation mechanism; 51. Drive ring; 52. Support plate; 53. Connecting arm; 54. Locking groove; 55. Installation chamber; 56. Locking block; 57. Outer plate; 58. Second spring. Detailed Implementation

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0036] Example 1

[0037] This invention provides, for example Figure 1-5 The present invention discloses a method for industrial production of high-purity neodymium oxide, wherein the method is implemented by an industrial production equipment for high-purity neodymium oxide, the equipment for industrial production of high-purity neodymium oxide includes a housing assembly 1, a drive mechanism 2 is disposed inside the housing assembly 1, a sealing mechanism 3 is disposed inside the drive mechanism 2, and a suction mechanism 4 and a supporting rotation mechanism 5 are disposed sequentially from top to bottom on the outside of the drive mechanism 2.

[0038] like Figure 2As shown, the outer shell assembly 1 includes a heating vessel 11, a partition plate 12, a stirring rod 13, and a limiting slide groove 14. The partition plate 12 is fixedly disposed inside the heating vessel 11, dividing the inner cavity of the heating vessel 11 into an upper chamber and a lower chamber. Multiple stirring rods 13 are provided, and the multiple stirring rods 13 are evenly fixedly disposed on the inner wall of the lower chamber. Two limiting slide grooves 14 are provided, and the two limiting slide grooves 14 are respectively opened on both sides of the inner cavity of the upper chamber.

[0039] like Figure 2 and Figure 3 As shown, the driving mechanism 2 includes a reciprocating screw 21, a drive motor 22, a hot gas input pipe 23, an I-shaped channel 24, valves 25, and vents 26. The reciprocating screw 21 passes through the heating vessel 11 and the partition plate 12 and is rotatably connected to the heating vessel 11 and the partition plate 12 via bearings. The drive motor 22 is fixedly mounted on the top of the heating vessel 11 and is driven by the reciprocating screw 21. The hot gas input pipe 23 is connected to the bottom end of the reciprocating screw 21 via a rotary joint. The I-shaped channel 24 is opened on the reciprocating screw 21 and connects the upper chamber and the lower chamber. There are two valves 25 and two vents 26. The two valves 25 are respectively located inside the two openings at the top of the I-shaped channel 24, and the two vents 26 are opened at the bottom of both sides of the reciprocating screw 21.

[0040] like Figure 3 and Figure 4 As shown, the sealing mechanism 3 includes a longitudinal slide bar 31, a sealing post 32, a transverse slide bar 33, and a movable ring 34. The longitudinal slide bar 31 is slidably disposed inside the reciprocating screw 21 in the vertical direction. The sealing post 32 is fixedly disposed at the bottom end of the longitudinal slide bar 31 and seals the vent 26. The transverse slide bar 33 is fixedly disposed at the top end of the longitudinal slide bar 31. The movable ring 34 is sleeved on the outside of the reciprocating screw 21 and fixedly connected to the transverse slide bar 33.

[0041] like Figure 3 As shown, the suction mechanism 4 includes a lifting plate 41, a first spring 42, a piston plate 43, and a limiting slider 44. The lifting plate 41, the first spring 42, and the piston plate 43 are sequentially sleeved on the outside of the reciprocating screw 21 from top to bottom. The lifting plate 41 is connected to the reciprocating screw 21 in a driving connection. The first spring 42 is fixedly connected between the lifting plate 41 and the piston plate 43. The piston plate 43 is slidably connected to the reciprocating screw 21. The movable ring 34 is rotatably mounted on the top of the piston plate 43 through a bearing. There are two limiting sliders 44, which are slidably mounted inside two limiting grooves 14 and are both fixedly connected to the piston plate 43.

[0042] By setting up the aforementioned drive mechanism 2 and suction mechanism 4, the reciprocating screw 21 rotates to drive the lifting plate 41 to rise continuously. When the lifting plate 41 rises, the piston plate 43 rises continuously through the first spring 42. When the piston plate 43 rises, the limiting slider 44 slides continuously upward inside the limiting groove 14, while a negative pressure is formed in the upper chamber. The negative pressure is in the lower chamber through the I-shaped channel 24, thereby continuously suctioning the liquid phase. The liquid phase enters the upper chamber through the I-shaped channel 24 and the valve 25 and is continuously collected.

[0043] like Figure 4 and Figure 5 As shown, the supporting rotation mechanism 5 includes a drive ring 51, a support plate 52, a connecting arm 53, a locking groove 54, a mounting chamber 55, a locking block 56, an outer sleeve 57, and a second spring 58. The drive ring 51 and the support plate 52 are sequentially sleeved on the outside of the reciprocating screw 21 from top to bottom. Both the drive ring 51 and the support plate 52 are rotatably connected to the reciprocating screw 21 via bearings. The support plate 52 is rotatably connected to the inner wall of the outer casing assembly 1 via bearings. The connecting arm 53 and the locking groove 54 are both provided with… Multiple connecting arms 53 are evenly fixedly disposed between the drive ring 51 and the support plate 52. Multiple locking grooves 54 are evenly opened on the bottom inner side of the drive ring 51. The mounting chamber 55 is opened inside the reciprocating screw 21. The locking block 56 slides through the reciprocating screw 21 and the locking block 56. The outer sleeve 57 is fixedly sleeved on the outside of the locking block 56 and slidably disposed on the inside of the mounting chamber 55. The second spring 58 is fixedly disposed between the inner wall of the mounting chamber 55 and the outer sleeve 57.

[0044] By setting up the above-mentioned sealing mechanism 3 and supporting rotation mechanism 5, the movable ring 34 drives the transverse slide bar 33 to rise continuously. When the transverse slide bar 33 rises, it drives the sealing column 32 to rise continuously through the longitudinal slide bar 31. The sealing column 32 pushes the locking block 56. The locking block 56 is compressed by the outer sleeve plate 57 and compresses the second spring 58. At the same time, it moves towards the locking groove 54. When the locking block 56 is inserted into the inner side of the locking groove 54, as the reciprocating screw 21 continues to rotate, the reciprocating screw 21 drives the drive ring 51 to rotate continuously through the locking block 56 and the locking groove 54. When the drive ring 51 rotates, it drives the supporting plate 52 to rotate continuously through the connecting arm 53, thereby driving the solid phase to rotate synchronously. During the rotation of the solid phase, the multiple rotating stirring rods 13 continuously stir the solid phase.

[0045] Subsequently, when the sealing column 32 seals the vent 26 again, the neodymium oxide product obtained after heating moves outward continuously under the action of centrifugal force generated during the rotation of the support plate 52, and is then output through the output pipe on the right side of the lower chamber.

[0046] Example 2

[0047] The method specifically includes the following steps:

[0048] S1. Add the neodymium-containing liquid to the lower chamber and let it settle. After the sedimentation is complete, start the drive motor 22. After the drive motor 22 starts, it drives the reciprocating screw 21 to rotate continuously. When the reciprocating screw 21 rotates, it drives the lifting plate 41 to rise continuously. When the lifting plate 41 rises, it drives the piston plate 43 to rise continuously through the first spring 42. When the piston plate 43 rises, it drives the limiting slider 44 to slide continuously upward inside the limiting slide groove 14. At the same time, a negative pressure is formed in the upper chamber. The negative pressure is in the lower chamber through the I-shaped channel 24, which continuously draws the liquid phase. The liquid phase enters the upper chamber through the I-shaped channel 24 and the valve 25 and is continuously collected.

[0049] S2. During the upward movement of the piston plate 43, the transverse slide bar 33 is driven to rise continuously through the movable ring 34. When the transverse slide bar 33 rises, the sealing column 32 is driven to rise continuously through the longitudinal slide bar 31. When the lifting plate 41 reaches the first threshold distance, the liquid phase suction is completed. At the same time, the top of the sealing column 32 contacts the locking block 56. Subsequently, as the lifting plate 41 continues to rise, the sealing column 32 pushes the locking block 56. The locking block 56 is compressed through the outer sleeve plate 57 to compress the second spring 58, and at the same time moves towards the locking groove 54.

[0050] S3. When the lifting plate 41 rises to the second threshold, the locking block 56 is inserted into the inner side of the locking groove 54. At this time, as the reciprocating screw 21 continues to rotate, the reciprocating screw 21 drives the drive ring 51 to rotate continuously through the locking block 56 and the locking groove 54. When the drive ring 51 rotates, it drives the support plate 52 to rotate continuously through the connecting arm 53, thereby driving the solid phase to rotate synchronously. During the rotation of the solid phase, the multiple rotating stirring rods 13 continuously stir the solid phase.

[0051] S4. When the lifting plate 41 rises to the third threshold, the sealing column 32 releases the blockage of the vent 26. At this time, the hot air input pipe 23 inputs the hot air into the reciprocating screw 21 and blows it towards the fixed part through the vent 26, thereby heating the solid phase. When the lifting plate 41 rises to the fourth threshold, the vent 26 is completely unsealed. At the same time, the limiting slider 44 moves to the top of the inner side of the limiting groove 14. Due to the obstruction of the limiting groove 14, the limiting slider 44 cannot continue to rise. Subsequently, as the lifting plate 41 continues to rise, the first spring 42 is continuously stretched.

[0052] S5. When the lifting plate 41 rises to the fifth threshold, the lifting plate 41 moves to the top of the reciprocating thread on the outside of the reciprocating screw 21. Subsequently, as the reciprocating screw 21 continues to rotate, the lifting plate 41 continues to descend along the reciprocating screw 21. While the lifting plate 41 descends, the liquid phase is output through the output pipe on the right side of the upper chamber.

[0053] S6. When the lifting plate 41 descends to the sixth threshold, the sealing column 32 seals the vent 26 again. At this time, the neodymium oxide product obtained after heating moves outward continuously under the action of centrifugal force generated during the rotation of the support plate 52, and is output through the output pipe on the right side of the lower chamber.

[0054] S7. When the lifting plate 41 descends to the seventh threshold, all neodymium oxide products are output. At the same time, the lifting plate 41 descends to the initial position, that is, the bottom of the reciprocating thread on the outside of the reciprocating screw 21, and the drive motor 22 is stopped, waiting for the next processing.

[0055] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An apparatus for the industrial production of high-purity neodymium oxide, characterized in that: The device for industrial production of high-purity neodymium oxide includes a shell assembly (1), a drive mechanism (2) is provided inside the shell assembly (1), a sealing mechanism (3) is provided inside the drive mechanism (2), and a suction mechanism (4) and a support and rotation mechanism (5) are arranged sequentially from top to bottom on the outside of the drive mechanism (2). The outer shell assembly (1) includes a heating vessel (11), a partition plate (12), a stirring rod (13), and a limiting slide (14). The partition plate (12) is fixedly installed inside the heating vessel (11). The partition plate (12) divides the inner cavity of the heating vessel (11) into an upper chamber and a lower chamber. Multiple stirring rods (13) are provided. Multiple stirring rods (13) are evenly fixedly installed on the inner wall of the lower chamber. Two limiting slide grooves (14) are provided. The two limiting slide grooves (14) are respectively opened on both sides of the inner cavity of the upper chamber. The drive mechanism (2) includes a reciprocating screw (21), a drive motor (22), a hot air input pipe (23), an I-shaped channel (24), a valve (25), and an air outlet (26). The reciprocating screw (21) passes through the heating vessel (11) and the partition plate (12) and is rotatably connected to the heating vessel (11) and the partition plate (12) through bearings. The drive motor (22) is fixedly installed on the top of the heating vessel (11) and is connected to the reciprocating screw (21) for transmission. The hot gas input pipe (23) is connected to the bottom end of the reciprocating screw (21) through a rotary joint. The I-shaped channel (24) is opened on the reciprocating screw (21) and connects the upper chamber and the lower chamber. There are two valves (25) and two air outlets (26). The two valves (25) are respectively set inside the two openings at the top of the I-shaped channel (24). The two air outlets (26) are opened at the bottom of both sides of the reciprocating screw (21).

2. The apparatus for industrial production of high-purity neodymium oxide according to claim 1, characterized in that: The sealing mechanism (3) includes a longitudinal slide bar (31), a sealing column (32), a transverse slide bar (33), and a movable ring (34).

3. The apparatus for industrial production of high-purity neodymium oxide according to claim 2, characterized in that: The longitudinal slide bar (31) is slidably disposed inside the reciprocating screw (21) in the vertical direction. The sealing column (32) is fixedly disposed at the bottom end of the longitudinal slide bar (31) and seals the vent (26). The transverse slide bar (33) is fixedly disposed at the top end of the longitudinal slide bar (31). The movable ring (34) is sleeved on the outside of the reciprocating screw (21) and fixedly connected to the transverse slide bar (33).

4. The apparatus for industrial production of high-purity neodymium oxide according to claim 3, characterized in that: The suction mechanism (4) includes a lifting plate (41), a first spring (42), a piston plate (43), and a limiting slider (44).

5. The apparatus for industrial production of high-purity neodymium oxide according to claim 4, characterized in that: The lifting plate (41), the first spring (42), and the piston plate (43) are sequentially sleeved on the outside of the reciprocating screw (21) from top to bottom. The lifting plate (41) is connected to the reciprocating screw (21) in a transmission manner. The first spring (42) is fixedly connected between the lifting plate (41) and the piston plate (43). The piston plate (43) is slidably connected to the reciprocating screw (21). The movable ring (34) is rotatably mounted on the top of the piston plate (43) through a bearing. There are two limiting sliders (44). The two limiting sliders (44) are slidably mounted on the inside of the two limiting grooves (14) and are fixedly connected to the piston plate (43).

6. The apparatus for industrial production of high-purity neodymium oxide according to claim 5, characterized in that: The supporting rotation mechanism (5) includes a drive ring (51), a support plate (52), a connecting arm (53), a locking groove (54), a mounting chamber (55), a locking block (56), an outer plate (57), and a second spring (58).

7. The apparatus for industrial production of high-purity neodymium oxide according to claim 6, characterized in that: The drive ring (51) and the support plate (52) are sequentially sleeved on the outside of the reciprocating screw (21) from top to bottom. Both the drive ring (51) and the support plate (52) are rotatably connected to the reciprocating screw (21) through bearings. The support plate (52) is rotatably connected to the inner wall of the outer casing assembly (1) through bearings. Multiple connecting arms (53) and locking grooves (54) are provided. Multiple connecting arms (53) are evenly fixed between the drive ring (51) and the support plate (52). Multiple locking slots (54) are evenly opened on the bottom inner side of the drive ring (51). The mounting chamber (55) is opened inside the reciprocating screw (21). The locking block (56) slides through the reciprocating screw (21) and the locking block (56). The outer sleeve (57) is fixedly sleeved on the outside of the locking block (56) and slidably disposed on the inside of the mounting chamber (55). The second spring (58) is fixedly disposed between the inner wall of the mounting chamber (55) and the outer sleeve (57).

8. The method of using the apparatus for industrial production of high-purity neodymium oxide according to claim 7, characterized in that, The method specifically includes the following steps: S1. Add neodymium-containing liquid to the lower chamber and let it settle. After the sedimentation is complete, start the drive motor (22). After the drive motor (22) starts, it drives the reciprocating screw (21) to rotate continuously. When the reciprocating screw (21) rotates, it drives the lifting plate (41) to rise continuously. When the lifting plate (41) rises, it drives the piston plate (43) to rise continuously through the first spring (42). When the piston plate (43) rises, it drives the limiting slider (44) to slide continuously upward inside the limiting groove (14). At the same time, a negative pressure is formed in the upper chamber. The negative pressure is in the lower chamber through the I-shaped channel (24), and then the liquid phase is continuously drawn. The liquid phase enters the upper chamber through the I-shaped channel (24) and the valve (25) and is continuously collected. S2. During the rise of the piston plate (43), the transverse slide bar (33) is driven to rise continuously through the movable ring (34). When the transverse slide bar (33) rises, the sealing column (32) is driven to rise continuously through the longitudinal slide bar (31). When the rise distance of the lifting plate (41) reaches the first threshold, the liquid phase suction is completed. At the same time, the top of the sealing column (32) contacts the locking block (56). Subsequently, as the lifting plate (41) continues to rise, the sealing column (32) pushes the locking block (56). The locking block (56) is compressed through the outer sleeve plate (57) to compress the second spring (58) and moves towards the locking groove (54). S3. When the lifting plate (41) rises to the second threshold, the locking block (56) is inserted into the inner side of the locking groove (54). At this time, as the reciprocating screw (21) continues to rotate, the reciprocating screw (21) drives the drive ring (51) to rotate continuously through the locking block (56) and the locking groove (54). When the drive ring (51) rotates, it drives the support plate (52) to rotate continuously through the connecting arm (53), thereby driving the solid phase to rotate synchronously. During the rotation of the solid phase, the multiple rotating stirring rods (13) continuously stir the solid phase. S4. When the lifting plate (41) rises to the third threshold, the sealing column (32) releases the blockage of the air outlet (26). At this time, the hot air input pipe (23) inputs the hot air into the reciprocating screw (21) and blows it into the solid phase through the air outlet (26) to heat the solid phase. When the lifting plate (41) rises to the fourth threshold, the air outlet (26) is completely unsealed. At the same time, the limiting slider (44) moves to the top of the inner side of the limiting slide groove (14). Due to the obstruction of the limiting slide groove (14), the limiting slider (44) cannot continue to rise. Subsequently, as the lifting plate (41) continues to rise, the first spring (42) is continuously stretched. S5. When the lifting plate (41) rises to the fifth threshold, the lifting plate (41) moves to the top of the reciprocating thread on the outside of the reciprocating screw (21). As the reciprocating screw (21) continues to rotate, the lifting plate (41) continues to descend along the reciprocating screw (21). While the lifting plate (41) descends, the liquid phase is output through the output pipe on the right side of the upper chamber. S6. When the lifting plate (41) descends to the sixth threshold, the sealing column (32) seals the air outlet (26) again. At this time, the neodymium oxide product obtained after heating moves outward continuously under the action of centrifugal force generated during the rotation of the support plate (52), and outputs the neodymium oxide product through the output pipe on the right side of the lower chamber. S7. When the lifting plate (41) descends to the seventh threshold, all neodymium oxide products are output. At the same time, the lifting plate (41) descends to the initial position, that is, the bottom of the reciprocating thread on the outside of the reciprocating screw (21), and the drive motor (22) is stopped, waiting for the next processing.

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