Calcination equipment for preparing high-purity tantalum oxide

Abstract

The invention belongs to the technical field of material science and engineering, and discloses calcining equipment for preparing high-purity tantalum oxide, which comprises a workbench, a fluotantalic acid solution produced by a tantalum-niobium liquid-liquid extraction method is used as a raw material, ammonia water and ammonia gas are used for neutralizing and precipitating, and the high-purity tantalum oxide is prepared by controlling different factors such as ammonia water concentration, tantalum liquid concentration, ammonia flushing speed and neutralizing temperature. Tantalum oxide particles are produced, then the produced tantalum oxide particles are poured into the spherical shell, the calcining crucible is started, heat conduction is conducted on the tantalum oxide particles in the spherical shell through temperature rising of the calcining crucible, and therefore the tantalum oxide particles are calcined, meanwhile, the motor is driven, and the motor drives the rotating shaft and the spherical shell to rotate; in the rotating process of the spherical shell, the tantalum oxide particles can be subjected to rolling heating at the bottom of the inner wall of the spherical shell, the calcining effect on the tantalum oxide particles is improved, the tantalum oxide particles can be heated more uniformly, the conversion efficiency of the tantalum oxide particles can be increased, and the surface structure of the particles can be optimized.

Description

Technical Field

[0001] This invention belongs to the fields of materials science and engineering technology, specifically a calcination device for preparing high-purity tantalum oxide. Background Technology

[0002] A calcination apparatus for preparing high-purity tantalum oxide is mainly used for high-temperature treatment of tantalum oxide to improve its purity and performance. The calcination process removes impurities from tantalum oxide particles and achieves the desired crystal structure and physical properties through heating and airflow treatment. The calcination process is designed to provide a precise high-temperature environment and optimize airflow control to remove impurities and improve the purity of tantalum oxide, making it suitable for various demanding applications.

[0003] The prior art document CN221444795U discloses a calcination device for high-purity tantalum and niobium oxides, including a processing tank and a calcination tank, with the calcination tank connected to the top of the processing tank. This invention uses a tail gas pump to guide the tail gas generated during calcination into a tail gas treatment cylinder. The tail gas treatment liquid within the cylinder dilutes harmful substances in the tail gas, and the tail gas heats the treatment liquid. Then, heat exchangers use the tail gas temperature to heat the combustion air. This process purifies the calcination tail gas and typically preheats and recovers the tail gas, reducing energy consumption and lowering production costs.

[0004] While the aforementioned application enables the purification and reuse of calcination exhaust gases, the tantalum and niobium materials are contained within the calcination crucible during this process. Inside, the tantalum and niobium are physically stationary, and the heat source may concentrate in certain areas, while other parts may fail to reach the required high temperature due to insufficient heat transfer. This uneven heating of the tantalum and niobium can lead to some materials being overheated or even charred, while others may not react completely, resulting in inconsistent product purity. Summary of the Invention

[0005] To address the problem of uneven heating mentioned in the background art, the present invention provides a calcination apparatus for preparing high-purity tantalum oxide.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a calcination device for preparing high-purity tantalum oxide, comprising a workbench, a fixed plate fixedly connected to one side of the top of the workbench, a calcination shell hinged to the top of the fixed plate, and a tantalum oxide calcination mechanism, the tantalum oxide calcination mechanism comprising a concave frame fixedly connected to one side of the top of the workbench, a hydraulic rod hinged to the top of the concave frame, the movable end of the hydraulic rod hinged to the bottom side of the calcination shell, a motor fixedly connected to one side of the outer wall of the calcination shell, and a calcination component provided at one end of the motor for calcining the prepared tantalum particles.

[0007] Preferably, the calcination assembly includes a rotating shaft fixedly connected to the output end of a motor, one end of which is fixedly connected to a spherical shell. The spherical shell is disposed inside the calcination shell, and the bottom of the spherical shell contacts a calcination crucible. The bottom of the calcination crucible is fixedly connected to the bottom of the inner wall of the calcination shell.

[0008] Preferably, a reciprocating lead screw is fixedly connected to the outer wall of the middle end of the rotating shaft, and a threaded plate is threadedly connected to the outer wall of one end of the reciprocating lead screw. A limit rod is slidably connected through one side of the threaded plate, and one end of the limit rod is fixedly connected to one side of the inner wall of the calcining shell.

[0009] Preferably, the side wall of the threaded plate is provided with a purification component, the purification component includes a crossbar fixedly connected to one side of the threaded plate, a piston plate fixedly connected to the end of the crossbar away from the threaded plate, and a shaped shell slidably connected to the outer wall of the piston plate.

[0010] Preferably, one side of the irregular shell is fixedly connected to one side of the outer wall of the calcining shell, one side of the inner wall of the irregular shell is connected to a bent pipe, one end of the bent pipe is connected to a first one-way valve, and the end of the bent pipe away from the irregular shell is connected to a strip shell.

[0011] Preferably, one end of the strip-shaped shell is fixedly connected to the outer wall of the calcining shell, one end of the inner wall of the strip-shaped shell is connected to a conical shell, the conical shell is disposed inside the spherical shell, and one end of the piston plate near the crossbar is fixedly connected to a first tension spring.

[0012] Preferably, two first tension springs are arranged in a group, and three groups of first tension springs are arranged inside the irregular shell. One end of one group of first tension springs is fixedly connected to one side of the inner wall of the irregular shell. A sliding frame ring is fixedly connected between the two groups of first tension springs. An activated carbon plate is fixedly connected to the inner wall of the sliding frame ring, and the outer wall of the sliding frame ring is slidably connected to the inner wall of the irregular shell.

[0013] Preferably, the inner wall of the irregular shell is provided with an auxiliary component, the auxiliary component including an exhaust pipe connected to both sides of the inner wall of the irregular shell, one end of the exhaust pipe is connected to a second one-way valve on its outer wall, and the end of the exhaust pipe away from the irregular shell is connected to a semi-circular box.

[0014] Preferably, a plurality of cylinders are fixedly connected to one side of the inner wall of the semi-circular box, a second tension spring is fixedly connected to one end of the inner wall of the cylinder, a circular plate is fixedly connected to one end of the second tension spring, the outer wall of the circular plate is slidably connected to the inner wall of the cylinder, a circular rod is fixedly connected to one side of the circular plate, and an impact ball is fixedly connected to the end of the circular rod away from the circular plate.

[0015] Preferably, one end of the impact ball is in contact with a tapered tube, one end of the tapered tube is connected to one side of the inner wall of the semicircular box, and a connecting plate is fixedly connected to the outer wall of the semicircular box near the exhaust pipe, with the top of the connecting plate fixedly connected to the bottom of the strip shell.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention utilizes a tantalum oxide calcination mechanism. Using a fluorotantalic acid solution produced by tantalum-niobium liquid-liquid extraction as raw material, and ammonia water and ammonia gas are used for neutralization and precipitation. By controlling different ammonia water concentrations, tantalum solution concentrations, ammonia flushing rates, and neutralization temperatures, tantalum oxide particles are produced. The produced tantalum oxide particles are then poured into the interior of a spherical shell. The calcination crucible is activated, and the heating of the crucible conducts heat to the tantalum oxide particles inside the spherical shell, thus calcining the particles. Simultaneously, a motor drives a rotating shaft to rotate with the spherical shell. During this rotation, the tantalum oxide particles are rolled and heated at the bottom of the inner wall of the shell, improving the calcination effect. This not only helps to heat the tantalum oxide particles more uniformly but may also accelerate its conversion efficiency and optimize the particle surface structure.

[0017] This invention employs a tantalum oxide calcination mechanism. When the rotating shaft rotates, it drives a reciprocating screw to rotate. The reciprocating screw causes a threaded plate to slide along the outer wall of a limiting rod. The threaded plate then moves a crossbar, which in turn moves a piston plate inside the irregularly shaped shell. This creates a negative pressure in the rod-shaped area inside the shell. This negative pressure passes through a bent tube and a strip-shaped shell into a conical shell. The conical shell then extracts harmful gases generated inside the spherical shell, effectively reducing environmental pollution and meeting environmental protection requirements, while providing a safer working environment for the factory. When the airflow enters the irregularly shaped shell, the piston plate drives a first tension spring to extend. This spring causes a sliding ring to slide against an activated carbon plate inside the shell. Harmful gases then flow through the fine pores of the activated carbon plate. Due to the high adsorption capacity of activated carbon, it effectively adsorbs harmful substances in the airflow, thus purifying the gas and reducing emissions. The fine pores of the activated carbon plate provide excellent filtration, enabling the adsorption and purification of toxic components in the gas.

[0018] This invention employs a tantalum oxide calcination mechanism. As the reciprocating screw continues to rotate, it drives the threaded plate to reset, which in turn drives the piston plate to reset inside the irregularly shaped shell. During this movement, the piston plate compresses the purified gas inside the shell. Due to the first one-way valve blocking the bend, harmful gases can only enter the shell and cannot be discharged through the bend. The compressed gas flow then enters the exhaust pipe, passing through the exhaust pipe, the semi-circular box, and the conical tube. The gas then sprays into the spherical shell through the conical tube. Because the gas flow inside the spherical shell is high-temperature when extracting harmful gases, the gas flow can dry the tantalum oxide particles inside the shell when it enters through the conical tube. This allows the equipment to recover and reuse harmful gases, reducing energy consumption and lowering production costs. Furthermore, due to the elastic deformation of the second tension spring, the second tension spring drives the circular plate, the circular rod, and the impact ball to slide, causing the impact ball to block the inner wall of the conical tube. When the airflow is ejected, it can cause the circular plate to slide on the inner wall of the cylinder, indirectly causing the impact ball to slightly collide with the inside of the spherical shell. This prevents most of the tantalum oxide particles from adhering to the inside of the spherical shell, increases the fluidity of the tantalum oxide particles, reduces accumulation, and helps maintain the uniformity of the tantalum oxide particles during calcination, ensuring its quality. Attached Figure Description

[0019] Figure 1 This is a top view of the overall structure of the present invention; Figure 2 This is a schematic cross-sectional view of the workbench structure of the present invention; Figure 3 This is a schematic cross-sectional view of the calcined shell structure of the present invention; Figure 4 For the present invention Figure 3 Enlarged view of A in the middle; Figure 5 For the present invention Figure 3 Enlarged view of B in the middle; Figure 6 This is a schematic cross-sectional view of the semi-circular box structure of the present invention; Figure 7 For the present invention Figure 6 Enlarged view of C in the middle; Figure 8 This is a schematic diagram of the spherical shell structure from below in this invention; Figure 9 This is a schematic diagram of the exploded structure of the activated carbon plate of the present invention.

[0020] In the diagram: 1. Workbench; 2. Fixed plate; 3. Calcination shell; 4. Tantalum oxide calcination mechanism; 41. Concave frame; 42. Hydraulic rod; 43. Motor; 44. Calcination assembly; 46. Purification assembly; 47. Auxiliary assembly; 441. Rotating shaft; 442. Spherical shell; 443. Calcination crucible; 444. Reciprocating screw; 445. Threaded plate; 446. Limiting rod; 461. Crossbar; 462. Piston plate; 463. Irregular shape 464. Shell; 465. Bend; 466. First one-way valve; 467. Strip shell; 468. Conical shell; 469. First tension spring; 4610. Sliding frame ring; 471. Activated carbon plate; 472. Exhaust pipe; 473. Second one-way valve; 474. Semicircular box; 475. Cylinder; 476. Second tension spring; 477. Circular plate; 478. Circular rod; 479. Impact ball; 4710. Conical tube; 4711. Connecting plate. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] like Figures 1 to 9 As shown, the present invention provides a calcination apparatus for preparing high-purity tantalum oxide, including a workbench 1, a fixing plate 2 fixedly connected to one side of the top of the workbench 1, a calcination shell 3 hinged to the top of the fixing plate 2, and further including; The tantalum oxide calcination mechanism 4 includes a concave frame 41 fixedly connected to one side of the top of the workbench 1. A hydraulic rod 42 is hinged to the top of the concave frame 41. The movable end of the hydraulic rod 42 is hinged to the bottom side of the calcination shell 3. A motor 43 is fixedly connected to one side of the outer wall of the calcination shell 3. A calcination component 44 is provided at one end of the motor 43 for calcining the prepared tantalum particles.

[0023] Using the above scheme: After calcination is completed, the hydraulic rod 42 can be activated, and the hydraulic rod 42 will drive the calcination shell 3 to rise. When the calcination shell 3 rises, it is limited by the fixed plate 2, so that the calcination shell 3 rotates around the fixed plate 2, which facilitates the discharge of tantalum oxide particles after calcination.

[0024] The calcination assembly 44 includes a rotating shaft 441 fixedly connected to the output end of the motor 43. One end of the rotating shaft 441 is fixedly connected to a spherical shell 442. The spherical shell 442 is disposed inside the calcination shell 3. The bottom of the spherical shell 442 contacts the calcination crucible 443. The bottom of the calcination crucible 443 is fixedly connected to the bottom of the inner wall of the calcination shell 3.

[0025] A reciprocating screw 444 is fixedly connected to the outer wall of the middle end of the rotating shaft 441. A threaded plate 445 is threadedly connected to the outer wall of one end of the reciprocating screw 444. A limit rod 446 is slidably connected through one side of the threaded plate 445. One end of the limit rod 446 is fixedly connected to one side of the inner wall of the calcining shell 3.

[0026] The above scheme is adopted: the calcining crucible 443 is started, and the tantalum oxide particles inside the spherical shell 442 are calcined by the heat conduction of the calcining crucible 443. At the same time, the motor 43 is driven, and the motor 43 drives the rotating shaft 441 to rotate with the spherical shell 442. During the rotation of the spherical shell 442, the tantalum oxide particles are rolled and heated at the bottom of the inner wall of the spherical shell 442.

[0027] The side wall of the threaded plate 445 is provided with a purification component 46. The purification component 46 includes a crossbar 461 fixedly connected to one side of the threaded plate 445. A piston plate 462 is fixedly connected to the end of the crossbar 461 away from the threaded plate 445. A shaped shell 463 is slidably connected to the outer wall of the piston plate 462.

[0028] One side of the irregular shell 463 is fixedly connected to one side of the outer wall of the calcining shell 3. One side of the inner wall of the irregular shell 463 is connected to a bend 464. One end of the bend 464 is connected to a first one-way valve 465 on its outer wall. The end of the bend 464 away from the irregular shell 463 is connected to a strip shell 466.

[0029] Both ends of one side of the strip shell 466 are fixedly connected to the outer wall of the calcined shell 3. The inner wall of the strip shell 466 is connected to the conical shell 467. The conical shell 467 is located inside the spherical shell 442. Both ends of the piston plate 462 near the crossbar 461 are fixedly connected to the first tension spring 468.

[0030] Using the above scheme: When the rotating shaft 441 rotates, the rotating shaft 441 drives the reciprocating screw 444 to rotate. The reciprocating screw 444 drives the threaded plate 445 to slide along the outer wall of the limiting rod 446. The threaded plate 445 drives the crossbar 461 to move. The crossbar 461 drives the piston plate 462 to slide inside the irregular shell 463, so that a negative pressure is generated in the rod area inside the irregular shell 463. The negative pressure enters the interior of the conical shell 467 through the bent pipe 464 and the strip shell 466. The negative pressure extracts the harmful gas generated inside the spherical shell 442 through the conical shell 467.

[0031] Two first tension springs 468 are arranged in a group. Three groups of first tension springs 468 are arranged inside the irregular shell 463. One end of one group of first tension springs 468 is fixedly connected to one side of the inner wall of the irregular shell 463. A sliding ring 469 is fixedly connected between the two groups of first tension springs 468. An activated carbon plate 4610 is fixedly connected to the inner wall of the sliding ring 469. The outer wall of the sliding ring 469 is slidably connected to the inner wall of the irregular shell 463.

[0032] Using the above scheme: when the airflow enters the interior of the irregular shell 463, the piston plate 462 drives the first tension spring 468 to perform a stretching motion. The first tension spring 468 drives the sliding frame ring 469 and the activated carbon plate 4610 to slide inside the irregular shell 463. At this time, the harmful gas will flow through the small pores of the activated carbon plate 4610.

[0033] like Figures 1 to 9 As shown, the inner wall of the irregular shell 463 is provided with an auxiliary component 47. The auxiliary component 47 includes an exhaust pipe 471 that connects to both sides of the inner wall of the irregular shell 463. One end of the exhaust pipe 471 is connected to a second one-way valve 472 on its outer wall. The second one-way valve is designed to prevent airflow inside the spherical shell 442 from entering the exhaust pipe 471, and only allows airflow inside the irregular shell 463 to enter the exhaust pipe 471. The end of the exhaust pipe 471 away from the irregular shell 463 is connected to a semi-circular box 473.

[0034] A plurality of cylinders 474 are fixedly connected to one side of the inner wall of the semi-circular box 473. A second tension spring 475 is fixedly connected to one end of the inner wall of the cylinder 474. A circular plate 476 is fixedly connected to one end of the second tension spring 475. The outer wall of the circular plate 476 is slidably connected to the inner wall of the cylinder 474. A circular rod 477 is fixedly connected to one side of the circular plate 476. An impact ball 478 is fixedly connected to the end of the circular rod 477 away from the circular plate 476.

[0035] One end of the impact ball 478 is in contact with a tapered tube 479. One end of the tapered tube 479 is connected to one side of the inner wall of the semicircular box 473. A connecting plate 4710 is fixedly connected to the outer wall of the semicircular box 473 near the exhaust pipe 471. The top of the connecting plate 4710 is fixedly connected to the bottom of the strip shell 466.

[0036] Using the above scheme: Under the elastic deformation of the second tension spring 475, the second tension spring 475 drives the circular plate 476, the circular rod 477, and the impact ball 478 to slide, so that the impact ball 478 tightly seals the inner wall of the conical tube 479. When the airflow is ejected, the circular plate 476 slides along the inner wall of the cylinder 474, and indirectly causes the impact ball 478 to slightly collide with the inside of the spherical shell 442.

[0037] Working principle and usage process of this invention: Using fluorotantalic acid solution produced by tantalum-niobium liquid-liquid extraction as raw material, tantalum oxide particles are produced by neutralization and precipitation with ammonia water and ammonia gas. By controlling different factors such as ammonia water concentration, tantalum solution concentration, ammonia flushing rate, and neutralization temperature, the produced tantalum oxide particles are then poured into the interior of a spherical shell 442. The calcination crucible 443 is then activated, and the calcination crucible 443 heats the tantalum oxide particles inside the spherical shell 442, thereby calcining the tantalum oxide particles. Simultaneously, a motor 43 is driven, which drives the rotating shaft 441 to rotate with the spherical shell 442. During the rotation of the spherical shell 442, the tantalum oxide particles are rolled and heated at the bottom of the inner wall of the spherical shell 442, which improves the calcination effect of the tantalum oxide particles. This not only helps to heat the tantalum oxide particles more evenly but may also accelerate its conversion efficiency and optimize the surface structure of the particles.

[0038] When the rotating shaft 441 rotates, it drives the reciprocating screw 444 to rotate. The reciprocating screw 444 drives the threaded plate 445 to slide along the outer wall of the limiting rod 446. The threaded plate 445 drives the crossbar 461 to move. The crossbar 461 drives the piston plate 462 to slide inside the irregular shell 463, causing a negative pressure to be generated in the rod area inside the irregular shell 463. The negative pressure enters the interior of the conical shell 467 through the bent pipe 464 and the strip shell 466. The negative pressure extracts the harmful gases generated inside the spherical shell 442 through the conical shell 467, effectively reducing the pollution of harmful gases to the environment, meeting environmental protection requirements, and providing a safer working environment for the factory. When airflow enters the irregularly shaped shell 463, the piston plate 462 drives the first tension spring 468 to extend. The first tension spring 468 causes the sliding ring 469 and the activated carbon plate 4610 to slide inside the irregularly shaped shell 463. At this time, harmful gases will flow through the small pores of the activated carbon plate 4610. Due to the high adsorption capacity of activated carbon, it can effectively adsorb harmful substances in the airflow, thereby purifying the gas and reducing the emission of harmful gases. The small pores of the activated carbon plate 4610 give it a good filtration effect, enabling it to adsorb and purify toxic components in the gas.

[0039] As the reciprocating screw 444 continues to rotate, it drives the threaded plate 445 to move back to its original position. The threaded plate 445 indirectly drives the piston plate 462 to move back to its original position inside the shaped shell 463. During this movement, the piston plate 462 compresses the purified gas inside the shaped shell 463. Due to the blockage of the bend pipe 464 by the first one-way valve 465, harmful gases can only enter the shaped shell 463 and cannot be discharged outwards through the bend pipe 464. At this time, the compressed gas flow enters the exhaust system. Inside pipe 471, airflow passes through exhaust pipe 471, semi-circular box 473, and conical pipe 479. Airflow is sprayed into the spherical shell 442 through conical pipe 479. Because the airflow inside the spherical shell 442 is high-temperature airflow when extracting harmful gases, the tantalum oxide particles inside the spherical shell 442 can be dried when the airflow enters the spherical shell 442 through conical pipe 479. The equipment recovers and reuses harmful gases, reduces energy consumption, and lowers production costs. Furthermore, due to the elastic deformation of the second tension spring 475, the second tension spring 475 drives the circular plate 476, the circular rod 477 and the impact ball 478 to slide, so that the impact ball 478 blocks the inner wall of the conical tube 479. When the airflow is ejected, the circular plate 476 can slide on the inner wall of the cylinder 474, indirectly causing the impact ball 478 to slightly collide with the inside of the spherical shell 442. This prevents most of the tantalum oxide particles from adhering to the inside of the spherical shell 442, increases the fluidity of the tantalum oxide particles, reduces accumulation, and helps to maintain the uniformity of the tantalum oxide particles during the calcination process, ensuring its quality.

[0040] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0041] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A calcination apparatus for preparing high-purity tantalum oxide, comprising a workbench (1), wherein a fixing plate (2) is fixedly connected to one side of the top of the workbench (1), and a calcination shell (3) is hinged to the top of the fixing plate (2), characterized in that: Also includes; The tantalum oxide calcination mechanism (4) includes a concave frame (41) fixedly connected to one side of the top of the workbench (1). A hydraulic rod (42) is hinged to the top of the concave frame (41). The movable end of the hydraulic rod (42) is hinged to the bottom side of the calcination shell (3). A motor (43) is fixedly connected to one side of the outer wall of the calcination shell (3). A calcination component (44) is provided at one end of the motor (43) for calcining the prepared tantalum particles.

2. The calcination equipment for preparing high-purity tantalum oxide according to claim 1, characterized in that: The calcination assembly (44) includes a rotating shaft (441) fixedly connected to the output end of a motor (43). One end of the rotating shaft (441) is fixedly connected to a spherical shell (442). The spherical shell (442) is disposed inside the calcination shell (3). The bottom of the spherical shell (442) contacts a calcination crucible (443). The bottom of the calcination crucible (443) is fixedly connected to the bottom of the inner wall of the calcination shell (3).

3. The calcination equipment for preparing high-purity tantalum oxide according to claim 2, characterized in that: A reciprocating screw (444) is fixedly connected to the outer wall of the middle end of the rotating shaft (441). A threaded plate (445) is threadedly connected to the outer wall of one end of the reciprocating screw (444). A limit rod (446) is slidably connected through one side of the threaded plate (445). One end of the limit rod (446) is fixedly connected to one side of the inner wall of the calcining shell (3).

4. The calcination equipment for preparing high-purity tantalum oxide according to claim 3, characterized in that: The side wall of the threaded plate (445) is provided with a purification component (46), the purification component (46) includes a crossbar (461) fixedly connected to one side of the threaded plate (445), a piston plate (462) is fixedly connected to one end of the crossbar (461) away from the threaded plate (445), and a shaped shell (463) is slidably connected to the outer wall of the piston plate (462).

5. The calcination equipment for preparing high-purity tantalum oxide according to claim 4, characterized in that: One side of the irregular shell (463) is fixedly connected to one side of the outer wall of the calcined shell (3). One side of the inner wall of the irregular shell (463) is connected to a bend (464). One end of the bend (464) is connected to a first one-way valve (465). The end of the bend (464) away from the irregular shell (463) is connected to a strip shell (466).

6. The calcination equipment for preparing high-purity tantalum oxide according to claim 5, characterized in that: Both ends of the strip shell (466) are fixedly connected to the outer wall of the calcined shell (3). The inner wall of the strip shell (466) is connected to the conical shell (467). The conical shell (467) is located inside the spherical shell (442). Both ends of the piston plate (462) near the crossbar (461) are fixedly connected to the first tension spring (468).

7. The calcination equipment for preparing high-purity tantalum oxide according to claim 6, characterized in that: Two first tension springs (468) are arranged in a group. Three groups of first tension springs (468) are arranged inside the irregular shell (463). One end of one group of first tension springs (468) is fixedly connected to one side of the inner wall of the irregular shell (463). A sliding ring (469) is fixedly connected between the two groups of first tension springs (468). An activated carbon plate (4610) is fixedly connected to the inner wall of the sliding ring (469). The outer wall of the sliding ring (469) is slidably connected to the inner wall of the irregular shell (463).

8. The calcination equipment for preparing high-purity tantalum oxide according to claim 7, characterized in that: The inner wall of the irregular shell (463) is provided with an auxiliary component (47), the auxiliary component (47) includes an exhaust pipe (471) connected to both sides of the inner wall of the irregular shell (463), one end of the exhaust pipe (471) is connected to a second one-way valve (472) on its outer wall, and the end of the exhaust pipe (471) away from the irregular shell (463) is connected to a semi-circular box (473).

9. The calcination equipment for preparing high-purity tantalum oxide according to claim 8, characterized in that: A plurality of cylinders (474) are fixedly connected to one side of the inner wall of the semi-circular box (473). A second tension spring (475) is fixedly connected to one end of the inner wall of the cylinder (474). A circular plate (476) is fixedly connected to one end of the second tension spring (475). The outer wall of the circular plate (476) is slidably connected to the inner wall of the cylinder (474). A circular rod (477) is fixedly connected to one side of the circular plate (476). An impact ball (478) is fixedly connected to one end of the circular rod (477) away from the circular plate (476).

10. The calcination equipment for preparing high-purity tantalum oxide according to claim 9, characterized in that: One end of the impact ball (478) is in contact with a tapered tube (479), one end of the tapered tube (479) is connected to one side of the inner wall of the semicircular box (473), and a connecting plate (4710) is fixedly connected to the outer wall of the semicircular box (473) near the exhaust pipe (471), and the top of the connecting plate (4710) is fixedly connected to the bottom of the strip shell (466).

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