A molybdenum concentrate sintering associated rhenium recovery device with residual energy cooperative utilization

Abstract

This invention relates to the field of waste energy recovery equipment technology, specifically to a waste energy co-utilization device for recovering rhenium associated with molybdenum concentrate sintering. It includes a heat exchange box and a condenser box. The condenser box contains a condensation assembly and a drive unit. The condensation assembly includes a horizontally arranged first tube, a second tube, and multiple condensation plates slidably connected between them. Water inlet hoses and water outlet hoses are connected to both sides of the condensation plates. A groove and an air inlet are provided at the center of the condensation plate. A crystallizer is installed in the groove. A coaxial sealing ring 1 and sealing ring 2 are provided around the groove. A sealing ring 3 is correspondingly installed on adjacent condensation plates. By integrating the heat exchange box and the dynamic condensation assembly, a waste heat, waste gas, and waste pressure utilization device is formed. The condensation assembly adopts a combination of bulging deformation and micro-vibration, and a V-shaped corrugated reinforced heat exchange cavity. This maximizes the surface area during the condensation stage and automatically peels off crystals and prevents scaling during the recovery stage, achieving low-temperature directional condensation and capture of gaseous rhenium oxides in the sintering flue gas of molybdenum concentrate.

Description

Technical Field

[0001] This invention relates to the field of waste energy recovery equipment technology, specifically to a device for recovering rhenium associated with molybdenum concentrate sintering through the synergistic utilization of waste energy. Background Technology

[0002] In the process of molybdenum ore smelting, molybdenum concentrate usually needs to undergo high-temperature sintering or roasting to achieve the oxidation and enrichment of molybdenum. During this process, rhenium, a rare metal associated with molybdenum concentrate, will escape with the flue gas in the form of gaseous oxide. As a strategic rare metal, rhenium is widely used in aerospace, petrochemical and high-performance alloy fields. Its recovery has significant economic value and resource recycling significance.

[0003] In recent years, with the advancement of the "dual carbon" target and the improvement of industrial energy conservation requirements, the comprehensive utilization of waste heat, waste gas and waste pressure has received increasing attention. Although various waste heat, waste gas and waste pressure utilization equipment, as well as supporting gas and liquid separation and purification equipment, have been introduced into the existing technology for energy recovery and pollutant control, due to rhenium's characteristics such as low-temperature solubility, easy crystallization and sensitivity to impurities, these devices are difficult to achieve targeted enrichment and high-value recovery. Summary of the Invention

[0004] The purpose of this invention is to provide a rhenium recovery device for molybdenum concentrate sintering that utilizes residual energy, in order to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A device for recovering rhenium associated with molybdenum concentrate sintering and co-utilizing waste heat includes a heat exchange box. A cooling medium inlet is located on one side of the heat exchange box, and a flue gas outlet is located on the other side, connected to a condenser box. The condenser box contains a condensation assembly and a drive unit. The condensation assembly includes a horizontally arranged first tube, a second tube, and multiple condensing plates slidably connected between them. Each condensing plate has a hollow structure, with inlet and outlet hoses connected to its two sides respectively. The inlet and outlet hoses communicate with the first and second tubes, respectively. A groove and an air inlet are concentrically located at the center of each condensing plate. A crystallizing element is installed within the groove. Two coaxial sealing rings (one and two) are located around the circumference of the groove. A corresponding sealing ring (three) is installed on adjacent condensing plates. During heat exchange, the condensing plates press against each other, causing the sealing ring (three) to embed between the sealing rings (one and two), forming a sealed chamber for the condensation and crystallization of rhenium oxide on the crystallizing element.

[0007] Preferably, the crystallizing element includes a rotating ring and a thin plate. Guide rods are radially mounted on the rotating ring. One end of the thin plate is fixed to the rotating ring, and the other end is slidably mounted on the guide rod. An arc-shaped groove is formed on the thin plate. A shaped rod is slidably mounted on the condensing plate. One end of the shaped rod passes through a sealing ring and is fixedly mounted with a sliding pin. The sliding pin is engaged and connected in the arc-shaped groove. The other end of the shaped rod has an inclined structure. A wedge-shaped block is correspondingly mounted on the outer wall of the sealing ring.

[0008] Preferably, the condenser plate has a groove, the shaped rod is installed in the groove, and a spring is fixedly connected between the shaped rod and the inner side wall of the groove.

[0009] Preferably, a guide sleeve is fixedly installed on the side wall of the air inlet, the rotating ring is rotatably installed on the guide sleeve, a corrugated plate is provided on the outer wall of the guide sleeve, and a protrusion is fixedly installed on the rotating ring.

[0010] Preferably, the inner wall of the cavity inside the condenser plate is provided with V-shaped corrugated grooves.

[0011] Preferably, the drive unit includes a threaded rod rotatably installed inside the condenser box, one end of the threaded rod is externally connected to a motor, one side of the condenser plate is threadedly installed on the threaded rod, and a pull rope is connected between adjacent condenser plates.

[0012] Preferably, a first slip ring and a second slip ring are rotatably mounted on the heat exchange box. An inlet pipe is fixedly mounted on the first slip ring, and an outlet pipe is fixedly mounted on the second slip ring. A gear ring is fixedly mounted on the heat exchange box. A second motor is provided on one side of the heat exchange box. A first gear is fixedly mounted on the output end of the second motor, and the first gear meshes with the gear ring.

[0013] Preferably, the waste energy recovery structure further includes a dust removal mechanism disposed between the heat exchange box and the condenser box. The dust removal mechanism includes a shell connecting the heat exchange box and the condenser box. A horizontal shaft is rotatably installed inside the shell. An annular block is fixedly installed on the horizontal shaft. A frame is installed at equal intervals on the annular block. A dustproof net is tensioned inside the frame.

[0014] Preferably, the horizontal axis is fixedly connected to the heat exchange box.

[0015] Preferably, the skeleton is rotatably mounted on the annular block via an elastic element, and a second gear is installed at the end of the skeleton away from the annular block. A toothed groove is formed on the inner wall of the housing, and the second gear meshes with the toothed groove.

[0016] Compared with the prior art, the beneficial effects of the present invention are: 1. The waste heat recovery structure of the present invention forms a waste heat, waste gas and waste pressure utilization device by integrating a heat exchange box and a dynamic condensation component. The condensation component adopts a combination of bulging deformation and micro-vibration, and a V-shaped corrugated heat exchange inner cavity to maximize the surface area during the condensation stage and automatically peel off crystals and prevent scale during the recovery stage, thereby realizing the low-temperature directional condensation and capture of gaseous rhenium oxide in the sintering flue gas of molybdenum concentrate.

[0017] 2. The residual energy recovery structure of the present invention integrates a heat exchange box and a dust removal mechanism. When the heat exchange box rotates slowly under the drive of motor 2, the horizontal shaft rotates synchronously, driving the entire filter assembly to rotate. When the dust-laden flue gas flows out of the heat exchange box and enters the housing of the dust removal mechanism, it first passes through a dynamic filter surface composed of multiple dustproof nets. Since the dustproof nets are arranged in a fan-shaped deflection pattern, they form a continuous, dead-angle-free filter barrier during rotation, effectively intercepting dust. During this process, gear 2 rolls and meshes along the tooth grooves of the inner wall of the housing, generating a reverse torque, causing the frame to deflect periodically relative to the annular block. When resetting, the potential energy generated by the rapid rotation of the torsion spring causes the dust attached to the surface to be thrown off, realizing online dust removal, ensuring long-term stable flue gas flow, ensuring high purity of rhenium products, and reducing manual maintenance.

[0018] 3. The residual energy recovery structure of the present invention allows each part of the heat exchanger bundle to be periodically exposed to the high-temperature flue gas flow field when the heat exchanger box rotates, thereby avoiding local overheating, reducing thermal fatigue damage, and extending the equipment life. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the heat exchanger structure of the present invention; Figure 3 This is a schematic diagram of the internal structure of the condenser box of the present invention; Figure 4 This is a schematic diagram of the condenser plate structure of the present invention; Figure 5 This is a schematic diagram of the rotating ring structure of the present invention; Figure 6 This is a schematic diagram of the thin plate structure of the present invention; Figure 7 This is a schematic diagram of the three-structure sealing ring of the present invention; Figure 8 This is a schematic diagram of the internal structure of the condenser plate of the present invention; Figure 9 This is a schematic diagram of the drive unit structure of the present invention; Figure 10 This is a schematic diagram of the dust removal mechanism of the invention; Figure 11 This is a schematic diagram of the skeleton structure of the invention.

[0020] The attached diagram lists the components represented by each number as follows: 10. Heat exchanger box; 11. Cooling medium inlet; 12. Flue gas outlet; 13. First slip ring; 14. Second slip ring; 15. Flue gas inlet pipe; 16. Steam outlet pipe; 17. Gear ring; 18. Motor II; 19. Gear I; 101. Heat pipe bundle; 102. Limiting plate; 103. Opening; 104. Steam chamber; 20. Condensing box; 30. Condensation assembly; 31. First pipe body; 311. Inlet hose; 32. Second pipe body; 321. Outlet hose; 33. Condensation plate; 34. Crystallizer; 341. Rotary ring; 342. Thin plate; 343. Guide rod; 35. Sealing ring one; 36. Sealing ring two; 37. Sealing ring three; 371. Wedge block; 38. Irregular rod; 381. Sliding pin; 382. Spring; 39. Guide sleeve; 391. Corrugated plate; 301. Groove; 302. Air inlet; 303. Arc groove; 304. Slide groove; 305. Protrusion; 306. V-shaped corrugated groove; 307. Pull rope; 40. Drive unit; 41. Threaded rod; 42. Motor 1; 50. Dust removal mechanism; 51. Housing; 52. Horizontal shaft; 53. Annular block; 54. Frame; 55. Dustproof net; 56. Gear II; 501. Gear groove. 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] Example 1: Refer to Figure 1 - Figure 11 The figure shows a waste heat recovery device for molybdenum concentrate sintering associated rhenium recovery, which includes a heat exchange box 10, a condenser box 20, a condenser assembly 30 and a drive unit 40. It is integrated into the tail flue system of the molybdenum concentrate sintering furnace and is used to simultaneously realize the high-temperature flue gas waste heat recovery and the efficient capture of associated rhenium.

[0023] A cooling medium inlet 11 is provided on one side of the heat exchange box 10, and a flue gas outlet 12 is provided on the other side of the heat exchange box 10 and connected to a condenser box 20. A condenser assembly 30 and a drive unit 40 are installed inside the condenser box 20. The bottom of the condenser box 20 is funnel-shaped and is equipped with a discharge valve, which can discharge material periodically.

[0024] The condenser assembly 30 includes a first tube 31 and a second tube 32 arranged horizontally, and a plurality of condenser plates 33 slidably connected between the two. They are arranged equidistantly along the axial direction. The condenser plates 33 have a cavity structure, with water inlet hoses 311 and water outlet hoses 321 connected to their respective sides. The water inlet hoses 311 and water outlet hoses 321 are connected to the first tube 31 and the second tube 32, respectively. A groove 301 and an air inlet 302 are provided at the center of the condenser plate 33. The groove 301 and the air inlet 302 are concentric. A crystallizer 34 is installed in the groove 301. A coaxial sealing ring 35 and a sealing ring 36 are provided around the groove 301. A sealing ring 37 is installed on the adjacent condenser plates 33. During heat exchange, the condenser plates 33 are squeezed against each other, so that the sealing ring 37 is embedded between the sealing ring 35 and the sealing ring 36 to form a sealed chamber for the condensation and crystallization of rhenium oxide on the crystallizer 34.

[0025] In an exemplary embodiment, the heat exchange box 10 is a cylindrical sealed shell, and a heat pipe bundle 101 is arranged axially inside it for introducing cooling soft water. Limiting plates 102 are welded to both ends of the heat pipe bundle 101 to ensure the structural stability of the heat pipe under the scouring of high-temperature flue gas.

[0026] The limiting plate 102 near the flue gas inlet has openings 103 corresponding to each heat pipe, allowing cooling soft water to enter the interior of each heat pipe. The limiting plate 102 at the other end is a double-layer structure, consisting of two parallel limiting plates 102, forming a closed steam chamber 104 between them. The steam chamber 104 is connected to the outlet end of the heat pipe bundle 101 and is used to collect saturated steam generated by the heat vaporization inside the heat pipes. This steam can be connected to a low-pressure steam network or used to drive a small steam turbine to generate electricity, thus realizing the high-value utilization of waste heat.

[0027] Flue gas enters the shell side from the inlet end of the heat exchanger 10, and flows laterally across the outer surface of the heat tube bundle 101, transferring heat to the cooling medium inside the tubes. After its own temperature drops from 800–1000℃ to 300–400℃, it is discharged from the flue gas outlet 12 and enters the subsequent condensation and recovery system.

[0028] During operation, the drive unit 40 pushes the condensing plates 33 closer together and squeezes them in the horizontal direction, so that the sealing ring 37 is embedded between the sealing ring 35 and the sealing ring 36 on the adjacent condensing plates 33, thereby forming multiple independent and sealed condensing chambers in the groove 301 area. The rhenium-containing flue gas, which has been initially cooled by the heat exchange box 10, enters the condensing box 20 and flows into the condensing chamber through the air inlet 302. At the same time, low-temperature cooling water enters the water inlet hose 311 through the first pipe body 31, exchanges heat with the flue gas through the cavity of the condensing plate 33, and flows out through the water outlet hose 321 into the second pipe body 32, so that the surface of the condensing plate 33 is rapidly cooled to below 80°C. Under this condition, the gaseous rhenium in the flue gas is converted into rhenium heptoxide upon cooling, and condenses, adsorbs, and crystallizes on the surface of the crystallizer 34, achieving efficient enrichment of rhenium. After condensation is completed, the drive unit 40 retracts, the condensing plate 33 separates, and it is convenient to periodically remove the crystallizer 34 for rhenium product collection and regeneration.

[0029] Reference Figures 4-8 The crystallizing element 34 includes a rotating ring 341 and a thin plate 342. A guide rod 343 is radially mounted on the rotating ring 341. One end of the thin plate 342 is fixed to the rotating ring 341, and the other end is slidably mounted on the guide rod 343. An arc groove 303 is opened on the thin plate 342. A shaped rod 38 is slidably mounted on the condensing plate 33. One end of the shaped rod 38 passes through the sealing ring 35 and is fixedly mounted with a sliding pin 381. The sliding pin 381 is connected in the arc groove 303. The other end of the shaped rod 38 has a beveled structure. A wedge block 371 is correspondingly installed on the outer wall of the sealing ring 37.

[0030] It should be noted that the moving distance of the irregular rod 38 is greater than the distance of the arc groove 303.

[0031] Furthermore, a groove 304 is provided on the condenser plate 33, and a shaped rod 38 is installed in the groove 304. A spring 382 is fixedly connected between the shaped rod 38 and the inner side wall of the groove 304.

[0032] When the drive unit 40 pushes the adjacent condensing plates 33 closer together, the sealing ring 37 moves with the condensing plate 33. The wedge-shaped block 371 on its outer wall contacts and presses the inclined end of the shaped rod 38. Due to the inclined surface cooperation, the shaped rod 38 is pushed laterally into the slide groove 304, stretching the spring 382 and simultaneously driving the sliding pin 381 to slide along the arc groove 303. At this time, the rhenium-containing flue gas enters the sealed chamber through the air inlet 302 and rapidly condenses and crystallizes on the surface of the low-temperature thin plate 342, forming a high-purity rhenium salt deposition layer. After condensation is completed, the drive unit 40... Section 40 retracts, condenser plate 33 separates, wedge block 371 disengages from shaped rod 38, and under the restoring force of spring 382, ​​shaped rod 38 moves towards air inlet 302. Sliding pin 381 drives thin plate 342 to rotate for initial peeling. As sliding pin 381 continues to move, it pushes one end of thin plate 342 to slide and bulge on guide rod 343. This dynamic deformation further destroys the adhesion between the crystalline layer and the substrate, causing rhenium crystal particles to loosen and fall off, concentrating in the collection tank below for subsequent unified recycling and processing.

[0033] Reference Figure 5 A guide sleeve 39 is fixedly installed on the side wall of the air inlet 302. It is worth noting that the outlet end of the guide sleeve 39 is higher than the thin plate 342, so that rhenium in the flue gas can crystallize on the surface of the thin plate 342. The rotating ring 341 is rotatably installed on the guide sleeve 39. A corrugated plate 391 is provided on the outer wall of the guide sleeve 39, and a protrusion 305 is fixedly installed on the rotating ring 341.

[0034] When the drive unit 40 pushes the condenser plates 33 away from each other, the shaped rod 38 drives the sliding pin 381 to move along the arc groove 303 and drives the thin plate 342 to bulge. At the same time, the rotating ring 341 rotates synchronously. During this rotation, the protrusion 305 rolls or slides along the undulating surface of the wave plate 391. Whenever the protrusion 305 crosses the crest and enters the trough, it will cause the rotating ring 341 to produce a slight vibration, which will then be transmitted to all the thin plates 342, further promoting the fragmentation and shedding of the rhenium crystal layer.

[0035] Reference Figure 8In this embodiment, cooling water enters the condenser plate 33 from the first pipe 31 through the inlet hose 311. The inner wall of the cavity inside the condenser plate 33 is provided with V-shaped corrugated grooves 306. The V-shaped corrugated grooves 306 disrupt the laminar boundary layer of the cooling water near the wall, induce local vortices and secondary flows in the fluid, significantly enhance the convective heat transfer coefficient, and make the outer surface temperature of the condenser plate 33 more uniform and lower. This is conducive to the rapid condensation of rhenium oxide into rhenium heptaoxide and crystallization on the thin plate 342. Moreover, compared with a smooth inner wall, the V-shaped corrugated structure provides a larger contact area of ​​the cooling medium in the same volume, further improving the overall heat exchange efficiency and shortening the condensation response time. The V-shaped corrugated grooves 306 also act as reinforcing ribs to a certain extent, enhancing the mechanical stability of the condenser plate 33 under frequent thermal expansion and contraction conditions, reducing the risk of deformation or cracking, and extending the service life of the equipment.

[0036] Reference Figure 3 and Figure 9 The drive unit 40 includes a threaded rod 41 rotatably installed in the condenser box 20. One end of the threaded rod 41 is externally connected to a motor 42. A condenser plate 33 is threadedly installed on the threaded rod 41. A pull rope 307 is connected between adjacent condenser plates 33. The pull rope 307 can be made of high-temperature resistant and corrosion-resistant metal wire rope or aramid fiber rope, and its two ends are respectively fixed to the corresponding connecting lugs of the adjacent condenser plates 33.

[0037] When motor 42 starts and drives threaded rod 41 to rotate in the forward direction, the first condenser plate 33 that is threadedly engaged with it moves axially along threaded rod 41 under the action of threaded transmission. Since the condenser plate 33 is connected to the next condenser plate 33 through pull rope 307, its movement will be transmitted to each subsequent condenser plate 33 in sequence through pull rope 307, thereby pushing the condenser plates 33 to be pulled open and discharged in sequence.

[0038] Example 2: Refer to Figure 1 and Figure 2 The heat exchange box 10 is a cylindrical sealed shell. A first slip ring 13 and a second slip ring 14 are rotatably mounted on its outer wall. The first slip ring 13 and the second slip ring 14 are rotatably fitted onto both ends of the heat exchange box 10 via bearing assemblies, and a high-temperature sealing ring is provided between them to ensure that the medium does not leak during rotation. A flue gas inlet pipe 15 is fixedly installed on the first slip ring 13, used to connect to the high-temperature flue of the upstream molybdenum concentrate sintering furnace, continuously introducing rhenium-containing flue gas into the heat exchange box 10. The second slip ring... A steam outlet pipe 16 is fixedly installed on the heat exchange box 14 to export the saturated steam generated during the heat exchange process to an external utilization system, such as a steam pipeline network or a small steam turbine. Furthermore, a gear ring 17 is fixedly installed on the heat exchange box 10. The gear ring 17 is coaxially arranged with the heat exchange box 10 and extends along its circumference. A second motor 18 is provided on one side of the heat exchange box 10. A first gear 19 is fixedly installed at the output end of the second motor 18. The first gear 19 meshes with the gear ring 17 to form an external meshing gear transmission pair.

[0039] During system operation, motor 18 starts, driving gear 19 to rotate, which in turn drives gear ring 17 and the heat exchange box 10 fixed thereto to rotate slowly. Since the flue gas inlet pipe 15 and steam outlet pipe 16 are respectively fixed on the freely rotatable first slip ring 13 and second slip ring 14, even if the heat exchange box 10 rotates, the flue gas and steam can still achieve continuous and sealed medium transmission through the slip ring structure. The rotation periodically exposes each part of the heat pipe bundle 101 to the high-temperature flue gas flow field, avoiding local overheating, reducing thermal fatigue damage, and extending the equipment life.

[0040] By integrating the heat exchange box 10 and the dynamic condensation component 30 to form a waste heat, waste gas and waste pressure utilization device, the high-temperature waste heat in the sintering flue gas of molybdenum concentrate and the low-temperature directional condensation and capture of gaseous rhenium oxide are realized.

[0041] Example 3: Refer to Figure 1 and Figure 10 and Figure 11 The waste energy recovery structure also includes a dust removal mechanism 50 set between the heat exchange box 10 and the condenser box 20, which is used to efficiently intercept the sintering dust of molybdenum concentrate and heavy metal particles carried in the flue gas, preventing them from entering the condensation system to contaminate the rhenium crystallization products or block the condensation components 30, thereby ensuring the purity of rhenium recovery and the long-term stable operation of the system. The dust removal mechanism 50 includes a shell 51 connecting the heat exchange box 10 and the condenser box 20. Specifically, a horizontal shaft 52 is rotatably installed inside the shell 51. In particular, the horizontal shaft 52 is fixedly connected to the heat exchange box 10. An annular block 53 is fixedly installed on the horizontal shaft 52. A frame 54 is equidistantly installed on the annular block 53. A dustproof net 55 is tensioned inside the frame 54. The dustproof net 55 is arranged in a fan-shaped deflection.

[0042] Furthermore, the frame 54 is rotatably mounted on the annular block 53 by an elastic element, preferably a torsion spring. A gear 56 is installed at the end of the frame 54 away from the annular block 53. A toothed groove 501 is provided on the inner wall of the housing 51, and the gear 56 meshes with the toothed groove 501.

[0043] When the heat exchange box 10 rotates slowly under the drive of motor 18, the horizontal shaft 52 rotates synchronously, driving the entire filter assembly to rotate. When the dust-laden flue gas flows out of the heat exchange box 10 and enters the housing 51 of the dust removal mechanism 50, it first passes through the dynamic filter surface composed of multiple dustproof nets 55. Since the dustproof nets 55 are arranged in a fan-shaped deflection, they form a continuous coverage and no dead angle filter barrier during rotation, effectively intercepting dust. During this process, gear 56 rolls and meshes along the tooth groove 501 on the inner wall of the housing 51, generating a reverse torque, which tightens the torsion spring. The frame 54 deflects periodically relative to the annular block 53. When resetting, the potential energy generated by the rapid rotation of the torsion spring causes the dust attached to the surface to be thrown off, realizing online dust removal and ensuring long-term stability of flue gas flow.

[0044] It is worth noting that an ash collection hopper is provided at the bottom of the shell 51.

[0045] 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.

[0046] 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 device for recovering rhenium associated with molybdenum concentrate sintering using waste heat recovery, comprising a heat exchange box (10), wherein a cooling medium inlet (11) is provided on one side of the heat exchange box (10), and a flue gas outlet (12) is provided on the other side of the heat exchange box (10) and connected to a condenser box (20), characterized in that, The condenser box (20) is equipped with a condenser assembly (30) and a drive unit (40). The condenser assembly (30) includes a first tube (31) and a second tube (32) arranged horizontally, and a plurality of condenser plates (33) slidably connected between them. The condenser plate (33) has a cavity structure, with an inlet hose (311) and an outlet hose (321) connected to its two sides respectively. The inlet hose (311) and the outlet hose (321) are respectively connected to the first tube (31) and the second tube (32). A groove is provided in the center of the condenser plate (33). (301) and air inlet (302), the groove (301) and air inlet (302) are concentric, a crystallizer (34) is installed in the groove (301), and a coaxial sealing ring one (35) and sealing ring two (36) are provided in the circumferential direction of the groove (301). A sealing ring three (37) is installed on the adjacent condenser plate (33). During heat exchange, each condenser plate (33) is squeezed against each other, so that the sealing ring three (37) is embedded between the sealing ring one (35) and the sealing ring two (36) to form a sealed chamber for rhenium oxide to condense and crystallize on the crystallizer (34).

2. The device for recovering rhenium associated with molybdenum concentrate sintering by co-utilizing residual energy as described in claim 1, characterized in that: The crystallizing component (34) includes a rotating ring (341) and a thin plate (342). A guide rod (343) is radially mounted on the rotating ring (341). One end of the thin plate (342) is fixed to the rotating ring (341), and the other end is slidably mounted on the guide rod (343). An arc groove (303) is provided on the thin plate (342). A shaped rod (38) is slidably mounted on the condensing plate (33). One end of the shaped rod (38) passes through the sealing ring (35) and is fixedly mounted with a sliding pin (381). The sliding pin (381) is connected in the arc groove (303). The other end of the shaped rod (38) has a beveled structure. A wedge block (371) is correspondingly mounted on the outer wall of the sealing ring (37).

3. The device for recovering rhenium associated with molybdenum concentrate sintering by co-utilizing residual energy as described in claim 2, characterized in that: The condenser plate (33) has a groove (304) and the shaped rod (38) is installed in the groove (304). A spring (382) is fixedly connected between the shaped rod (38) and the inner side wall of the groove (304).

4. A device for recovering rhenium associated with molybdenum concentrate sintering by co-utilizing residual energy as described in claim 2, characterized in that: A guide sleeve (39) is fixedly installed on the side wall of the air inlet (302), and a rotating ring (341) is rotatably installed on the guide sleeve (39). A corrugated plate (391) is provided on the outer wall of the guide sleeve (39), and a protrusion (305) is fixedly installed on the rotating ring (341).

5. A rhenium recovery device for molybdenum concentrate sintering with waste energy utilization as described in claim 1, characterized in that: The condenser plate (33) has a V-shaped corrugated groove (306) on the inner wall of the cavity.

6. A device for recovering rhenium associated with molybdenum concentrate sintering by co-utilizing residual energy as described in claim 1, characterized in that: The drive unit (40) includes a threaded rod (41) rotatably installed in the condenser box (20). One end of the threaded rod (41) is externally connected to a motor (42). One side of the condenser plate (33) is threadedly installed on the threaded rod (41). A pull rope (307) is connected between adjacent condenser plates (33).

7. A device for recovering rhenium associated with molybdenum concentrate sintering by co-utilizing residual energy as described in claim 1, characterized in that: The heat exchange box (10) is rotatably mounted with a first slip ring (13) and a second slip ring (14). The first slip ring (13) is fixedly mounted with a flue gas inlet pipe (15), and the second slip ring (14) is fixedly mounted with a steam outlet pipe (16). The heat exchange box (10) is fixedly mounted with a gear ring (17). A second motor (18) is provided on one side of the heat exchange box (10). A first gear (19) is fixedly mounted on the output end of the second motor (18). The first gear (19) meshes with the gear ring (17).

8. A device for recovering rhenium associated with molybdenum concentrate sintering by co-utilizing residual energy as described in claim 1, characterized in that: The waste energy recovery structure also includes a dust removal mechanism (50) disposed between the heat exchange box (10) and the condenser box (20). The dust removal mechanism (50) includes a housing (51) connecting the heat exchange box (10) and the condenser box (20). A horizontal shaft (52) is rotatably installed inside the housing (51). An annular block (53) is fixedly installed on the horizontal shaft (52). A frame (54) is equidistantly installed on the annular block (53). A dustproof net (55) is tensioned inside the frame (54).

9. A rhenium recovery device for molybdenum concentrate sintering associated with waste energy utilization according to claim 8, characterized in that: The horizontal shaft (52) is fixedly connected to the heat exchange box (10).

10. A device for recovering rhenium associated with molybdenum concentrate sintering by co-utilizing residual energy as described in claim 8, characterized in that: The skeleton (54) is rotatably mounted on the annular block (53) via an elastic element. A gear two (56) is installed at one end of the skeleton (54) away from the annular block (53). A tooth groove (501) is provided on the inner wall of the housing (51). The gear two (56) meshes with the tooth groove (501).

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