Microwave treatment multiphase fluidized bed reactor and ardealite treatment process

Abstract

The invention relates to the technical field of phosphogypsum processing, in particular to a microwave treatment multiphase fluidized bed reactor which comprises a fluidized bed reactor furnace body and a base, the fluidized bed reactor furnace body is arranged in the middle of the upper portion of the base, the fluidized bed reactor furnace body is transversely placed, and the fluidized bed reactor furnace body and the base are parallel to each other; a feeding port and a discharging port are formed in the two sides of the outer surface of the middle of the fluidized bed reactor furnace body in a penetrating mode correspondingly, and the feeding port corresponds to the discharging port in position. And a driving mechanism. The fluidized bed reactor furnace body which is transversely placed is centered and positioned by using the centered positioning mechanisms at the two ends, and then the fluidized bed reactor furnace body is driven by using the driving mechanism, so that the fluidized bed reactor furnace body rotates, phosphogypsum can uniformly roll in the fluidized bed reactor furnace body, and during the period, the phosphogypsum is uniformly turned over. The rolling phosphogypsum is stirred and dispersed in a gas injection manner, so that the phosphogypsum can be uniformly heated, and the temperature of a part of regions is prevented from being too high or too low.

Description

Technical Field

[0001] This invention relates to the field of phosphogypsum processing technology, specifically to a microwave-treated multiphase fluidized bed reactor and a process for treating phosphogypsum. Background Technology

[0002] Phosphogypsum waste is a solid waste generated during phosphate ore beneficiation and phosphorylation production. Its main component is calcium sulfate, and it also contains phosphoric acid, calcium phosphate, residual acid, P2O5, organic matter, and small amounts of heavy metals and trace elements. Phosphogypsum waste is usually a white or dark gray, moist, fine powder. It is acidic and hygroscopic, and not easily soluble in water.

[0003] Chinese Patent CN104275124A discloses a microwave fluidized bed high-pressure reactor, including a reactor furnace body. The reactor furnace body is connected to a pressurizing device for pressurizing the inner cavity of the reactor furnace body. The reactor furnace body is also connected to a microwave generating device for feeding microwaves into the inner cavity of the reactor furnace body. The microwave generating device includes a microwave source for emitting microwaves and a waveguide for feeding microwaves emitted by the microwave source into the reactor furnace body. The waveguide is equipped with an isolation mechanism at its connection with the reactor furnace body for isolating the pressure inside the reactor furnace body and transmitting microwaves into the reactor furnace body. It pressurizes the reactor furnace body through a pressurizing device, creating a high-pressure environment within the reactor furnace. A microwave generator is installed on the reactor furnace body, feeding microwaves into the reactor furnace body, creating a high-temperature environment. Microwaves are emitted from a microwave source and fed into the reactor furnace body cavity through a waveguide. An isolation mechanism is installed at the connection between the waveguide and the reactor furnace body to prevent high pressure leakage into the microwave generator or even the microwave source, which could damage the microwave source. Simultaneously, the microwave source allows microwaves to penetrate into the reactor furnace body cavity through the isolation mechanism, thus not affecting normal microwave feeding while effectively isolating the high pressure. The electromagnetic field of the microwaves forces the polar molecules in the material to align from a disordered state to an ordered state. During the high-frequency conversion of the electric field, the polar molecules rotate rapidly, generating heat through mutual friction, thus heating the material from the inside out. It features high thermal efficiency, rapid temperature control, fast reaction rate, uniform temperature, and cleanliness. It also realizes microwave pressurized reaction in fluidized bed reactors, expanding the application range of microwave equipment. It can be widely used in chemical, environmental protection, metallurgy, pharmaceutical and food processing and other fields. However, because the equipment lacks the function of stirring and dispersing materials, the accumulated materials may be heated unevenly, resulting in some areas being too hot and some areas being too cold. This can easily reduce the decomposition effect of materials and subsequent resource utilization. Summary of the Invention

[0004] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a microwave treatment multiphase fluidized bed reactor and a process for treating phosphogypsum. It can effectively solve the problem that the existing technology lacks the function of stirring and dispersing materials, which may cause uneven heating of the accumulated materials, resulting in some areas being too hot and some areas being too cold, which can easily reduce the decomposition effect of the materials and subsequent resource utilization.

[0005] To achieve the above objectives, the present invention provides the following technical solution: This invention provides a microwave-processed multiphase fluidized bed reactor, comprising a fluidized bed reactor body and a base. The fluidized bed reactor body is disposed in the middle of the base, and is horizontally positioned, with the reactor body parallel to the base. An inlet and an outlet are respectively provided on both sides of the outer surface of the middle section of the reactor body, with the inlet and outlet positions corresponding to each other. The reactor also includes: Two centering positioning mechanisms are located at both ends of the outside of the fluidized bed reactor furnace body; A drive mechanism for driving the fluidized bed reactor body in conjunction with a central positioning mechanism. The inlet and outlet have the same diameter. An assist rod is fixedly installed on the outer surface of the sealing ring between the inlet and outlet to facilitate rotation of the sealing ring by the operator. The two central positioning mechanisms are symmetrically arranged about the longitudinal central axis of the fluidized bed reactor body.

[0006] Preferably, a sealing ring is rotatably provided on the outer surface of the middle part of the fluidized bed reactor furnace body, and a feed nozzle corresponding to the feed inlet position is provided on one side of the outer surface of the sealing ring, and a discharge nozzle corresponding to the discharge outlet position is provided on the other side of the outer surface of the sealing ring. Limiting rings are fixedly provided on both sides of the outer surface of the middle part of the fluidized bed reactor furnace body to limit the sealing ring.

[0007] Preferably, cable trays are fixedly installed on both sides of the upper surface of the base, and a microwave generating module is installed at the center of the top of the cable tray. A waveguide is provided on the outside of the microwave generating module at one end of the fluidized bed reactor body, and the waveguide is coaxial with the fluidized bed reactor body. The outer surface of the waveguide, located at one end of the fluidized bed reactor body, penetrates the outer surface of the fluidized bed reactor body and extends into the interior of the fluidized bed reactor body, and the waveguide rotates relative to the fluidized bed reactor body. Both cable trays are located at the transverse central axis of the base, and the two cable trays are symmetrically arranged about the longitudinal central axis of the base. The cable trays have a hollow structure design to facilitate wire insertion.

[0008] Preferably, a horizontal tube is provided in the middle of the fluidized bed reactor body, and multiple equally spaced diversion tubes are provided on both sides of the outer surface of the horizontal tube. One end of the horizontal tube is a closed end, and the other end is an open end. An air inlet pipe is provided in the middle of the open end of the horizontal tube. The air inlet pipe, the horizontal tube, and the diversion tubes are integrally formed and interconnected. The air inlet pipe has an L-shaped structure design with the open end facing downwards. The open end of the air inlet pipe passes through the waveguide and extends to the bottom of the waveguide. The open end of the waveguide is connected and assembled to the outlet end of an external air pump. Anti-detachment rings are fixedly provided on both sides of the outer surface of the waveguide to prevent the waveguide from detaching from the fluidized bed reactor body. One anti-detachment ring is located at the inner end of the fluidized bed reactor body, and the other anti-detachment ring is located at the outer end of the fluidized bed reactor body.

[0009] Preferably, the driving mechanism includes a gear ring fixedly mounted on the outer surface of the fluidized bed reactor furnace body, and a fixed seat fixedly mounted on the upper surface of the base at the position of the gear ring. A drive shaft is rotatably mounted inside the fixed seat, and a drive gear is fixedly mounted on the outer surface of the drive shaft at the position of the gear ring. The drive gear meshes with the gear ring for transmission. The outer end of the drive shaft is connected to the output end of an external driving component via a reducer. The drive gear, in conjunction with the gear ring, drives the fluidized bed reactor furnace body to rotate.

[0010] Preferably, the centering positioning mechanism includes a circular ring. The outer surface of the central portion of the circular ring has multiple irregularly shaped openings arranged in a ring at equal intervals. A movable seat is slidably mounted on the inner surface of each irregularly shaped opening. A wheel seat is located at the center of the bottom of the movable seat, and multiple pressing wheels are installed inside the wheel seat, rolling relative to the fluidized bed reactor body. The movable seat has an I-shaped structure, and the pressing wheels are arranged in an arc-shaped trajectory.

[0011] Preferably, racks are fixedly installed on both sides of one end of the movable seat. A drive shaft is rotatably installed inside the annular component at each movable seat position. A first gear is fixedly installed on the outer surface of the drive shaft at each rack position, and the first gear meshes with the rack. A second gear is fixedly installed on the outer surface of the drive shaft away from the first gear. A handle is fixedly installed at the center of the outer surface of one of the drive shafts, away from the second gear. The handle facilitates rotation of the drive shaft by the operator.

[0012] Preferably, a support ring is fixedly provided on the outer surface of the ring component and at the middle of one end of the second gear, and a gear ring is rotatably provided inside the support ring, which meshes with each of the second gears for transmission. Multiple fixed shafts arranged in a ring at equal intervals are provided on the outer surface of the ring component and at one end of the gear ring, and ratchet teeth are elastically provided on the outside of the fixed shafts via torsion springs, with the ratchet teeth slidingly engaging with the gear ring. The support ring has an L-shaped cross-section for stabilizing the gear ring, and feet are fixedly provided on both sides of the bottom outer surface of the ring component for support, with the feet connected to the base by bolts.

[0013] The process for treating phosphogypsum includes the following steps: Step 1: Rotate the handle to move the drive shaft, first gear, and rack towards the fluidized bed reactor furnace body. Use the pressing wheel to clamp and position the fluidized bed reactor furnace body. Next, inject the phosphogypsum material into the fluidized bed reactor furnace body through the feed nozzle and feed port in sequence. Then, rotate the sealing ring to misalign the feed nozzle and discharge nozzle with the feed port and discharge port respectively to complete the sealing. Step 2: Start the microwave generator module and drive unit in sequence. At this time, the drive shaft, drive gear and gear ring drive work together to rotate the fluidized bed reactor furnace body, causing the phosphogypsum to tumble in the fluidized bed reactor furnace body. Then start the external air pump, so that the gas is injected into the fluidized bed reactor furnace body through the air inlet pipe, horizontal pipe and split pipe in sequence, spraying the tumbling phosphogypsum to disperse it. During this period, wait for the phosphogypsum to react. Step 3: After the reaction is complete, rotate the sealing ring to align the discharge nozzle with the discharge port and discharge the phosphogypsum.

[0014] The technical solution provided by this invention has the following advantages compared with known public technologies: This invention utilizes a centering positioning mechanism at both ends to center and position a horizontally placed fluidized bed reactor furnace body. Then, a driving mechanism drives the fluidized bed reactor furnace body to rotate, allowing the phosphogypsum to tumble evenly within the furnace body. During this process, gas jets are used to disperse the tumbling phosphogypsum, thus ensuring uniform heating of the phosphogypsum and preventing excessively high or low temperatures in certain areas. This guarantees the decomposition effect of the material and its subsequent resource utilization. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic cross-sectional view of the fluidized bed reactor furnace body of the present invention; Figure 3 This is a partial side view of the annular component of the present invention; Figure 4 This is a partial structural plan view of the annular component of the present invention; Figure 5 This is a schematic diagram of the movable seat structure of the present invention.

[0017] Reference numerals: 100, Base; 101, Cable tray; 102, Microwave generator module; 103, Waveguide; 200, Fluidized bed reactor body; 201, Sealing ring; 202, Feed nozzle; 203, Feed inlet; 204, Horizontal pipe; 205, Air inlet pipe; 206, Discharge nozzle; 207, Discharge outlet; 208, Diverter pipe; 300, Centering positioning mechanism; 301, Circular component; 302. First gear; 303, handle; 304, rack; 305, movable seat; 306, gear ring; 307, support ring; 308, drive shaft; 309, second gear; 310, fixed shaft; 311, ratchet; 312, torsion spring; 313, wheel seat; 314, pressing wheel; 400, drive mechanism; 401, gear ring; 402, drive gear; 403, fixed seat; 404, drive shaft. Detailed Implementation

[0018] The present invention will be further described below with reference to embodiments.

[0019] See attached document Figure 1-5 The microwave-treated multiphase fluidized bed reactor shown includes a fluidized bed reactor body 200 and a base 100. The fluidized bed reactor body 200 is located in the middle above the base 100, and is placed horizontally. The fluidized bed reactor body 200 and the base 100 are parallel to each other. A feed inlet 203 and a discharge outlet 207 are respectively provided on both sides of the outer surface of the middle section of the fluidized bed reactor body 200, with the feed inlet 203 and the discharge outlet 207 corresponding to each other. A rotating part is provided on the outer surface of the middle section of the fluidized bed reactor body 200. The device includes a sealing ring 201, with a feed nozzle 202 corresponding to the position of the feed inlet 203 on one side of the outer surface of the sealing ring 201, and a discharge nozzle 206 corresponding to the position of the discharge outlet 207 on the other side of the outer surface of the sealing ring 201. The device also includes two centering positioning mechanisms 300 located at both ends of the fluidized bed reactor furnace body 200 to support and stabilize the fluidized bed reactor furnace body 200; and a drive mechanism 400 for driving the fluidized bed reactor furnace body 200 in conjunction with the centering positioning mechanisms 300.

[0020] Specifically, cable trays 101 are fixedly installed on both sides of the upper surface of the base 100, and a microwave generating module 102 is installed at the center of the top of the cable trays 101. A waveguide 103 is installed outside the microwave generating module 102 and at one end of the fluidized bed reactor furnace body 200. The waveguide 103 is coaxial with the fluidized bed reactor furnace body 200 and is connected to the microwave generating module 102. The outer surface of the waveguide 103, at one end of the fluidized bed reactor furnace body 200, penetrates the outer surface of the fluidized bed reactor furnace body 200 and extends into the interior of the fluidized bed reactor furnace body 200. The waveguide 103 rotates relative to the fluidized bed reactor furnace body 200. Using the microwave generating module 102, gas, liquid, solid and other phases can fully contact and mix in the fluidized bed to achieve chemical reactions. A horizontal tube 204 is provided in the middle of the 200, and multiple equally spaced diverter tubes 208 are provided on both sides of the outer surface of the horizontal tube 204 for injecting gas. One end of the horizontal tube 204 is a closed end, and the other end of the horizontal tube 204 is an open end. An air inlet tube 205 is provided in the middle of the open end of the horizontal tube 204 for injecting gas into the horizontal tube 204. The air inlet tube 205 is located in one of the waveguides 103. The air inlet tube 205, the horizontal tube 204, and the diverter tubes 208 are integrally formed and interconnected. The air inlet tube 205 has an L-shaped structure design with the open end facing downward. The open end of the air inlet tube 205 passes through the waveguide 103 and extends to the bottom of the waveguide 103. The open end of the waveguide 103 is connected and assembled to the outlet end of an external air pump. The air pump is not shown or labeled in the accompanying drawings of the specification. As it is prior art, it will not be described in detail here.

[0021] Specifically, the drive mechanism 400 includes a gear ring 401 fixedly installed on the outer surface of the fluidized bed reactor furnace body 200, and a fixed seat 403 fixedly installed on the upper surface of the base 100 and located at the position of the gear ring 401. A drive shaft 404 is rotatably installed inside the fixed seat 403, and a drive gear 402 is fixedly installed on the outer surface of the drive shaft 404 and located at the position of the gear ring 401. The drive gear 402 meshes with the gear ring 401 for transmission. The outer end of the drive shaft 404 is connected and assembled to the output end of the external drive component through a reducer. The drive component is an electric motor, which is not shown or labeled in the accompanying drawings of the specification. As prior art, it will not be described in detail here.

[0022] Specifically, the centering positioning mechanism 300 includes a circular ring 301. Multiple irregularly shaped openings, arranged in a ring at equal intervals, are formed through the outer surface of the central part of the circular ring 301. Movable seats 305 are slidably mounted on the inner surface of the irregularly shaped openings. A wheel seat 313 is located at the center of the bottom end of the movable seat 305, and multiple pressing wheels 314 are installed inside the wheel seat 313. The pressing wheels 314 are rolled with the fluidized bed reactor furnace body 200. Racks 304 are fixedly mounted on both sides of one end of the movable seat 305 to drive the movable seat 305 to rise and fall synchronously. A drive shaft 308 is rotatably mounted inside the circular ring 301 at each position of the movable seat 305. A first gear 302 is fixedly mounted on the outer surface of the drive shaft 308 at each position of the rack 304. The gear 302 meshes with the rack 304. A second gear 309 is fixedly installed on the outer surface of the drive shaft 308 away from the first gear 302. A handle 303 is fixedly installed at the middle of the outer surface of one of the drive shafts 308 away from the second gear 309. A support ring 307 is fixedly installed on the outer surface of the ring 301 at the middle of the second gear 309. A gear ring 306 is rotatably installed inside the support ring 307 and meshes with each of the second gears 309. Multiple fixed shafts 310 are arranged in a ring at equal intervals on the outer surface of the ring 301 at the end of the gear ring 306. A ratchet 311 is elastically installed on the outside of the fixed shafts 310 through a torsion spring 312 and slides with the gear ring 306.

[0023] The process for treating phosphogypsum includes the following steps: Step 1: Rotate the handle 303 to move the drive shaft 308, the first gear 302, and the rack 304 to move the movable seat 305 towards the fluidized bed reactor furnace body 200. Use the pressing wheel 314 to clamp and position the fluidized bed reactor furnace body 200. Next, inject the phosphogypsum material into the fluidized bed reactor furnace body 200 through the feed nozzle 202 and the feed port 203 in sequence. Then, rotate the sealing ring 201 to make the feed nozzle 202 and the discharge nozzle 206 misalign with the feed port 203 and the discharge port 207 respectively, thus completing the sealing. Step 2: Start the microwave generator module 102 and the drive unit in sequence. At this time, the drive shaft 404, drive gear 402 and gear ring 401 drive the fluidized bed reactor furnace body 200 to rotate, so that the phosphogypsum tumbles in the fluidized bed reactor furnace body 200. Then start the external air pump, so that the gas passes through the air inlet pipe 205, horizontal pipe 204 and diversion pipe 208 in sequence and is injected into the fluidized bed reactor furnace body 200 to spray the tumbling phosphogypsum to disperse it. During this period, wait for the phosphogypsum to react. Step 3: After the reaction is complete, rotate the sealing ring 201 to align the outlet 206 with the outlet 207 and discharge the phosphogypsum.

[0024] This invention utilizes centering and positioning mechanisms 300 at both ends to center and position the horizontally placed fluidized bed reactor furnace body 200. Then, a driving mechanism 400 drives the fluidized bed reactor furnace body 200 to rotate, allowing the phosphogypsum to tumble evenly within the fluidized bed reactor furnace body 200. During this process, gas is used to disperse the tumbling phosphogypsum, thus ensuring uniform heating of the phosphogypsum and preventing excessively high or low temperatures in certain areas, thereby guaranteeing the decomposition effect of the material and subsequent resource utilization.

[0025] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A microwave-treated multiphase fluidized bed reactor, comprising a fluidized bed reactor furnace body (200) and a base (100), characterized in that: The fluidized bed reactor body (200) is located in the middle above the base (100), and the fluidized bed reactor body (200) is placed horizontally and parallel to the base (100). An inlet (203) and an outlet (207) are respectively provided on both sides of the outer surface of the middle part of the fluidized bed reactor body (200), and the inlet (203) and outlet (207) are positioned correspondingly. The reactor body also includes: Two centering positioning mechanisms (300) are located at both ends of the outside of the fluidized bed reactor furnace body (200); A drive mechanism (400) for driving the fluidized bed reactor furnace body (200) in conjunction with the centering positioning mechanism (300).

2. The microwave-treated multiphase fluidized bed reactor according to claim 1, characterized in that, A sealing ring (201) is rotatably provided on the outer surface of the middle part of the fluidized bed reactor furnace body (200), and a feed nozzle (202) corresponding to the position of the feed inlet (203) is provided on one side of the outer surface of the sealing ring (201), and a discharge nozzle (206) corresponding to the position of the discharge outlet (207) is provided on the other side of the outer surface of the sealing ring (201).

3. The microwave-treated multiphase fluidized bed reactor according to claim 1, characterized in that, Cable trays (101) are fixedly installed on both sides of the upper surface of the base (100), and a microwave generating module (102) is installed in the middle of the top of the cable tray (101). A waveguide (103) is provided on the outside of the microwave generating module (102) and at one end of the fluidized bed reactor furnace body (200). The waveguide (103) is coaxial with the fluidized bed reactor furnace body (200). The outer surface of the waveguide (103) and at one end of the fluidized bed reactor furnace body (200) penetrate the outer surface of the fluidized bed reactor furnace body (200) and extend into the interior of the fluidized bed reactor furnace body (200). The waveguide (103) rotates relative to the fluidized bed reactor furnace body (200).

4. The microwave-treated multiphase fluidized bed reactor according to claim 3, characterized in that, A horizontal tube (204) is provided in the middle of the fluidized bed reactor furnace body (200), and multiple diversion tubes (208) are provided on both sides of the outer surface of the horizontal tube (204) and are arranged at equal intervals. One end of the horizontal tube (204) is a closed end, and the other end of the horizontal tube (204) is an open end. An air inlet pipe (205) is provided in the middle of the open end of the horizontal tube (204). The air inlet pipe (205), the horizontal tube (204), and the diversion tubes (208) are integrally formed and interconnected. The air inlet pipe (205) has an L-shaped structure design and the open end faces downward. The open end of the air inlet pipe (205) passes through the waveguide (103) and extends to the bottom of the waveguide (103). The open end of the waveguide (103) is connected and assembled with the outlet end of the external air pump.

5. The microwave-treated multiphase fluidized bed reactor according to claim 4, characterized in that, The drive mechanism (400) includes a gear ring (401) fixedly installed on the outer surface of the fluidized bed reactor furnace body (200) and a fixed seat (403) fixedly installed on the upper surface of the base (100) and located at the position of the gear ring (401). The fixed seat (403) is rotatably provided with a drive shaft (404), and a drive gear (402) is fixedly installed on the outer surface of the drive shaft (404) and located at the position of the gear ring (401). The drive gear (402) meshes with the gear ring (401) for transmission. The outer end of the drive shaft (404) is connected and assembled with the output end of the external drive component through a reducer.

6. The microwave-treated multiphase fluidized bed reactor according to claim 1, characterized in that, The centering positioning mechanism (300) includes a ring component (301). The outer surface of the middle part of the ring component (301) is provided with multiple irregularly shaped openings arranged in a ring at equal intervals. The inner surface of the irregularly shaped openings is provided with a movable seat (305). The middle part of the bottom end of the movable seat (305) is provided with a wheel seat (313). Multiple pressing wheels (314) are installed inside the wheel seat (313). The pressing wheels (314) are rolled with the fluidized bed reactor furnace body (200).

7. The microwave-treated multiphase fluidized bed reactor according to claim 6, characterized in that, A rack (304) is fixedly provided on both sides of one end of the movable seat (305). A drive shaft (308) is rotatably provided inside the ring (301) and located at the position of each movable seat (305). A first gear (302) is fixedly provided on the outer surface of the drive shaft (308) and located at the position of each rack (304), and the first gear (302) meshes with the rack (304). A second gear (309) is fixedly provided on the outer surface of the drive shaft (308) away from the first gear (302). A handle (303) is fixedly provided at the middle of the outer surface of one of the drive shafts (308) away from the second gear (309).

8. The microwave-treated multiphase fluidized bed reactor according to claim 7, characterized in that, A support ring (307) is fixedly provided on the outer surface of the ring (301) and at the middle of one end of the second gear (309). A gear ring (306) is rotatably provided inside the support ring (307), and the gear ring (306) meshes with each of the second gears (309) for transmission. A plurality of fixed shafts (310) are provided on the outer surface of the ring (301) and at one end of the gear ring (306) and are arranged in a ring with equal spacing. A ratchet (311) is elastically provided on the outside of the fixed shaft (310) through a torsion spring (312), and the ratchet (311) slides and meshes with the gear ring (306).

9. A process for treating phosphogypsum, applied to the microwave-treated multiphase fluidized bed reactor as described in claim 8, characterized in that, Includes the following steps: Step 1: Rotate the handle (303) to drive the drive shaft (308), the first gear (302), and the rack (304) to move the movable seat (305) towards the fluidized bed reactor furnace body (200). Use the pressing wheel (314) to clamp and position the fluidized bed reactor furnace body (200). Next, inject the phosphogypsum material into the fluidized bed reactor furnace body (200) through the feed nozzle (202) and the feed port (203) in sequence. Then, rotate the sealing ring (201) to make the feed nozzle (202) and the discharge nozzle (206) misalign with the feed port (203) and the discharge port (207) respectively to complete the sealing. Step 2: Start the microwave generator module (102) and the drive unit in sequence. At this time, the drive shaft (404), drive gear (402), and gear ring (401) drive the fluidized bed reactor furnace body (200) to rotate, so that the phosphogypsum rolls in the fluidized bed reactor furnace body (200). Then start the external air pump, so that the gas passes through the air inlet pipe (205), horizontal pipe (204), and diversion pipe (208) in sequence and is injected into the fluidized bed reactor furnace body (200) to spray the rolling phosphogypsum to disperse it. During this period, wait for the phosphogypsum to react. Step 3: After the reaction is complete, rotate the sealing ring (201) to make the outlet (206) correspond to the outlet (207) and discharge the phosphogypsum.

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