Molybdenum powder continuous production device and continuous production method

Abstract

The invention relates to the technical field of molybdenum powder production, and discloses a continuous molybdenum powder production device and a continuous molybdenum powder production method.The production device comprises a long reaction furnace, and a continuous reaction mechanism is arranged in the long reaction furnace and used for achieving continuous and non-stop production operation; the continuous reaction mechanism comprises an annular conveyor, reaction crucibles and a heating assembly, follow-up rotating bases are arrayed on the annular conveyor, and each follow-up rotating base is provided with one reaction crucible; an independent heating assembly is arranged in a heating area of the long reaction furnace and corresponds to a preset position of each reaction crucible, and the heating assemblies are configured to perform heating control of different temperature gradients on the reaction crucibles at different positions; the continuous reaction mechanism is arranged and comprises the annular conveyor and the arrayed reaction crucibles, so that the heating, reaction, cooling and discharging processes of raw materials can be continuously carried out, pause of traditional intermittent production is avoided, and the production efficiency and the equipment utilization rate are remarkably improved.

Description

Technical Field

[0001] This invention relates to the field of molybdenum powder production, and more specifically, to a continuous molybdenum powder production apparatus and method. Background Technology

[0002] Molybdenum powder, as an important metal powder material, is widely used in aerospace, electronics, chemical and other fields. Traditional molybdenum powder production processes, such as hydrogen reduction, usually adopt batch production, which has problems such as low production efficiency, high energy consumption and poor batch stability of products.

[0003] During the reaction process, the accumulation and agglomeration of reactant powders may lead to incomplete reaction, affecting product quality, resulting in low production efficiency, high energy consumption, poor batch stability, powder agglomeration, and uneven reaction. To address these issues, we propose a continuous molybdenum powder production device and method. Summary of the Invention

[0004] This invention provides a continuous production apparatus and method for molybdenum powder, solving the technical problems of low production efficiency, high energy consumption, poor batch stability of products, powder agglomeration, and uneven reaction in related technologies.

[0005] The first aspect of the present invention provides a continuous molybdenum powder production apparatus, comprising: a reaction furnace, wherein a continuous reaction mechanism is provided in the reaction furnace for realizing continuous and uninterrupted production operation; The continuous reaction mechanism includes a ring conveyor, a reaction crucible, and a heating assembly. The ring conveyor is arrayed with rotating bases, and each rotating base is equipped with a reaction crucible. In the heating zone of the reaction furnace, an independent heating component is set at a preset position for each reaction crucible, and the heating component is configured to implement heating control of different temperature gradients for reaction crucibles at different positions. The bottom of the reaction crucible is equipped with an inner base, and multiple retractable blow-jet columns are arrayed on the inner base. Each blow-jet column requires a different gas pressure value for its retraction and extension. Several flat blowing holes are arrayed along the circumference of the outer wall of the blow-jet columns. During the heating process of the raw materials in the reaction crucible by the heating components, hydrogen gas is introduced into the reaction crucible. The hydrogen gas first drives the blow-jet column to perform irregular extension and retraction movements. When the blow-jet column extends, it sprays hydrogen gas horizontally through the flat blow hole, and the blow-jet column can penetrate into the interior of the raw material powder after it extends.

[0006] Furthermore, the reaction furnace is elliptical in shape and is divided into two spaces: the front space is the heating zone and the back space is the cooling and recovery furnace. The ring conveyor can drive the reaction crucible to heat and react in the heating zone, then transport it to the cooling and recovery furnace, and finally return it to the heating zone.

[0007] Furthermore, the cooling and recovery furnace is equipped with a powder suction component and an automatic feeding component. After the reaction crucible is cooled to the specified temperature, it passes through the powder suction component and the automatic feeding component in sequence before re-entering the heating zone. The powder suction component sucks out the raw materials after the reaction, and when it passes under the automatic feeding component, the raw materials are refilled into the reaction crucible.

[0008] Furthermore, the heating assembly includes a clamping arm, with an outer cover plate fixedly installed at the ends of the two robotic arms of the clamping arm. Heating wire tubes are fixedly embedded in the inner walls of the two outer cover plates, and both outer cover plates are semi-circular. When the reaction crucible is moved to a position directly opposite the heating assembly, the two outer cover plates are controlled to merge and wrap around the bottom periphery of the reaction crucible. After heating is completed, the two outer cover plates are opened.

[0009] Furthermore, a crucible base is fixedly installed at the center of the upper wall of the rotating base, and air vents are fixedly arranged on the outer periphery of the upper wall of the crucible base, while an air supply port is fixedly installed at the center of the upper wall of the crucible base.

[0010] Furthermore, the crucible base is provided with an air inlet, and an automatic gas supply component is fixed to the inner wall of the reaction furnace on the front side facing the heating component. The air inlet is connected to the vent and the gas supply port. When the reaction crucible moves to the position of the heating component, hydrogen is supplied to the air inlet through the automatic gas supply component.

[0011] Furthermore, the interior of the crucible base is equipped with a partition plate. The upper space of the partition plate is a pressure relief chamber, and the lower space of the partition plate is a pressure chamber. The pressure chamber and the pressure relief chamber are independent of each other. The bottom groove of the crucible base matches the crucible base plate.

[0012] Furthermore, each blow column is provided with a limiting cylinder at its bottom. The limiting cylinder extends from the pressurization chamber through the partition plate into the pressurization chamber. The top outer wall of the limiting cylinder is provided with a vent hole, and the bottom outer wall of the limiting cylinder is provided with a pressurization hole. A slider is slidably provided inside the limiting cylinder. The slider is fixedly connected to the blow column. A limiting spring is provided below the slider. Each limiting spring has a different spring force coefficient.

[0013] Furthermore, hydrogen gas from the vent and supply ports enters the base inside the crucible. Part of the hydrogen gas enters the blow-jet column through the vent pipe, and part enters the pressurization chamber and then enters the limiting cylinder through the pressurization hole, pushing the blow-jet column to extend. When the slider rises to the vent position, the gas pressure leaks, pulling back the blow-jet column. The leaked hydrogen gas is ejected along the expansion and contraction gap of the blow-jet column. Another part of the hydrogen gas flows through the vent in the thick wall of the reaction crucible to the gas curtain nozzle. The gas curtain nozzle array is located inside the reaction crucible, and the jet direction is inclined downward, forming a cross gas curtain.

[0014] The first aspect of this invention provides a continuous production method for a continuous molybdenum powder production apparatus, comprising the following steps: S1. Place the reaction crucible containing molybdenum powder raw material on the rotating base of the ring conveyor; S2. The ring conveyor sequentially transports the reaction crucible to each heating component in the heating zone of the long reaction furnace. S3. When the reaction crucible is moved to the position directly opposite the heating component, the heating component will wrap around the bottom of the crucible for heating. At the same time, hydrogen gas will be introduced into the reaction crucible through the automatic gas supply component. The hydrogen gas will drive the blower column to extend and retract irregularly and spray out, stirring and reducing the raw materials in the crucible. S4. The reaction crucible that has completed the heating reaction is transported to the cooling and recovery furnace for cooling. Then, the finished molybdenum powder is sucked out by the powder suction component and then refilled with raw materials by the automatic feeding component. S5. The reaction crucible, after being fed, re-enters the heating zone via the ring conveyor to begin the next cycle.

[0015] The beneficial effects of this invention are as follows: This invention, by setting up a continuous reaction mechanism, including a ring conveyor and an array of reaction crucibles, enables the heating, reaction, cooling and discharge processes of raw materials to be carried out continuously, avoiding the interruptions of traditional intermittent production and significantly improving production efficiency and equipment utilization. Multiple retractable blow-jet columns arrayed on the base inside the crucible perform irregular retraction and extension movements driven by hydrogen, and spray hydrogen in a horizontal direction from the flat blow-jet hole. The blow-jet columns can extend into the interior of the raw material powder. This design not only effectively stirs the powder and prevents agglomeration, but also allows the reducing hydrogen to penetrate deep into the powder and make full contact with the powder, which greatly improves the efficiency and uniformity of the reduction reaction and avoids the problem of excessive reaction on the powder surface and insufficient reaction inside the powder in traditional methods. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the ring transmission mechanism structure of the present invention; Figure 3 This is a schematic diagram of the heating component structure of the present invention; Figure 4 This is a schematic diagram of the rotating base structure of the present invention; Figure 5 This is the invention Figure 4 Enlarged view of point A in the middle; Figure 6 This is a schematic diagram of the internal structure of the reaction crucible of the present invention; Figure 7 This is a schematic diagram of the internal structure of the crucible base of the present invention; Figure 8 This is a schematic diagram of the internal structure of the limiting cylinder of the present invention.

[0017] In the diagram: 11. Reactor furnace; 12. Cooling and recovery furnace; 13. Powder suction assembly; 14. Automatic feeding assembly; 15. Automatic gas supply assembly; 2. Continuous reaction mechanism; 21. Circular conveyor; 22. Rotating base; 23. Reaction crucible; 24. Heating assembly; 241. Clamping arm; 242. Outer cover plate; 243. Heating wire tube; 25. Crucible base; 26. Vent; 27. Gas supply port; 28. Gas inlet interface; 29. ​​Gas curtain nozzle; 31. Inner base of crucible; 32. Blowing column; 33. Vent duct; 35. Divider plate; 36. Limiting cylinder; 37. Vent pipe; 38. Pressure relief chamber; 39. Pressurization chamber; 301. Flat blowing hole; 302. Sliding block; 303. Vent hole; 304. Pressurization hole; 305. Limiting spring. Detailed Implementation

[0018] The subject matter described herein will now be discussed with reference to exemplary embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and implement the subject matter described herein, and changes may be made to the function and arrangement of the elements discussed without departing from the scope of this specification. Various processes or components may be omitted, substituted, or added as needed in the examples. Furthermore, features described in some examples may be combined in other examples.

[0019] Example 1 like Figures 1-8 As shown, a continuous production apparatus for molybdenum powder includes: a reaction furnace 11, in which a continuous reaction mechanism 2 is provided to realize continuous and uninterrupted production operation; The continuous reaction mechanism 2 includes a ring conveyor 21, a reaction crucible 23 and a heating component 24. The ring conveyor 21 is arrayed with rotating bases 22, and each rotating base 22 is equipped with a reaction crucible 23. In the heating zone of the reaction furnace 11, an independent heating component 24 is provided at a preset position for each reaction crucible 23, and the heating component 24 is configured to implement heating control of different temperature gradients for the reaction crucibles 23 at different positions. The bottom of the reaction crucible 23 is provided with an inner base 31, and multiple retractable blow-jet columns 32 are arrayed on the inner base 31. The gas pressure required for the retraction and extension of each blow-jet column 32 is different. Several flat blowing holes 301 are arrayed along the circumferential direction on the outer wall of the blow-jet column 32. During the heating process of the raw materials in the reaction crucible 23 by the heating component 24, hydrogen gas is introduced into the reaction crucible 23. The hydrogen gas first drives the blow-jet column 32 to perform irregular extension and retraction movements. When the blow-jet column 32 extends, hydrogen gas is sprayed horizontally through the flat blow hole 301, and the blow-jet column 32 can penetrate into the interior of the raw material powder after it extends.

[0020] The reaction furnace 11 is elliptical in shape and is divided into two spaces: the front space is the heating zone and the back space is the cooling and recovery furnace 12. The ring conveyor 21 can drive the reaction crucible 23 to heat and react in the heating zone, then transport it to the cooling and recovery furnace 12, and finally return it to the heating zone.

[0021] The cooling and recovery furnace 12 is equipped with a powder suction component 13 and an automatic feeding component 14. After the reaction crucible 23 is cooled to the specified temperature, it passes through the powder suction component 13 and the automatic feeding component 14 in sequence before re-entering the heating zone. The reaction crucible 23 is sucked out by the powder suction component 13, and when it passes under the automatic feeding component 14, the raw materials are refilled into the reaction crucible 23.

[0022] The heating assembly 24 includes a clamping arm 241. The ends of the two robotic arms of the clamping arm 241 are fixedly provided with outer cover plates 242. Heating wire tubes 243 are fixedly embedded in the inner walls of the two outer cover plates 242. The two outer cover plates 242 are semi-circular. The reaction crucible 23 is moved to a position directly opposite the heating assembly 24. The two outer cover plates 242 are controlled to merge and wrap around the bottom periphery of the reaction crucible 23. The two outer cover plates 242 are opened after heating is completed.

[0023] A crucible base 25 is fixedly installed at the center of the upper wall of the rotating base 22. A vent 26 is fixedly arranged on the outer periphery of the upper wall of the crucible base 25, and a gas supply port 27 is fixedly installed at the center of the upper wall of the crucible base 25.

[0024] The crucible base plate 25 has an air inlet 28. An automatic gas supply component 15 is fixed to the inner wall of the reaction furnace 11 and is located on the front of the heating component 24. The air inlet 28 is connected to the air vent 26 and the gas supply port 27. When the reaction crucible 23 moves to the position of the heating component 24, hydrogen is supplied to the air inlet 28 through the automatic gas supply component 15.

[0025] The interior of the crucible base 31 is provided with a partition plate 35. The upper space of the partition plate 35 is a pressure relief chamber 38, and the lower space of the partition plate 35 is a pressure chamber 39. The pressure chamber 39 and the pressure relief chamber 38 are independent of each other. The bottom groove of the crucible base 31 matches the crucible base plate 25.

[0026] Each blow column 32 has a limiting cylinder 36 at its bottom. The limiting cylinder 36 extends from the pressurization chamber 39 through the partition plate 35 and into the pressurization chamber 39. The top outer wall of the limiting cylinder 36 has a vent hole 303, and the bottom outer wall of the limiting cylinder 36 has a pressurization hole 304. A slider 302 is slidably arranged inside the limiting cylinder 36. The slider 302 is fixedly connected to the blow column 32. A limiting spring 305 is provided below the slider 302. Each limiting spring 305 has a different elastic coefficient.

[0027] Hydrogen gas enters the base 31 inside the crucible through the vent 26 and the gas supply port 27. Part of the hydrogen gas enters the blow-jet column 32 through the vent pipe 37, and part of the hydrogen gas enters the pressurization chamber 39 and then enters the limiting cylinder 36 through the pressurization hole 304, pushing the blow-jet column 32 to extend. When the slider 302 rises to the position of the vent hole 303, the gas pressure leaks, pulling back the blow-jet column 32. The leaked hydrogen gas is sprayed out along the expansion gap of the blow-jet column 32. Another part of the hydrogen gas flows through the vent 33 in the thick wall of the reaction crucible 23 to the gas curtain nozzle 29. The gas curtain nozzle 29 is arrayed on the inside of the reaction crucible 23, and the jet direction is inclined downward, forming a cross gas curtain.

[0028] The core technology lies in using a ring conveyor 21 to drive multiple reaction crucibles 23 to circulate within the long reaction furnace 11, achieving continuous and uninterrupted production throughout the entire process from charging, heating, cooling to unloading. The working principle is explained in detail below, in conjunction with the structural features described in the claims: Continuous cyclic reaction process: The reaction furnace 11 is elliptical in shape and is divided into two functional areas: a heating zone and a cooling recovery furnace 12. The ring conveyor 21 drives the reaction crucible 23 through the following sequence: heating zone (multi-temperature zone heating) → cooling recovery furnace 12 → powder suction assembly 13 → automatic feeding assembly 14 → back to the heating zone.

[0029] Each reaction crucible 23 is heated in the heating zone with different temperature gradients (e.g., gradually increasing from 400℃ to 1100℃), simulating the temperature control curve in a traditional batch furnace, to achieve a stepwise hydrogen reduction reaction of molybdenum oxide (e.g., MoO3): ; A typical temperature gradient can be set as follows: Zone 1 400℃ (preheating and impurity removal), Zone 2 650℃ (initial reduction), Zone 3 950℃ (deep reduction), Zone 4 1100℃ (sintering and shaping). The dwell time in each zone can be adjusted according to the kinetic formula. ,in ; (k(T) is the reaction rate constant determined by the Arrhenius equation, and Ea is the activation energy of the reduction reaction).

[0030] Heating and temperature control mechanism: The heating assembly 24 drives two outer cover plates 242 to merge via clamping arm 241, wrapping around the reaction crucible 23 for radiant heating. The heating wire tube 243 is controlled by PID, with an accuracy of ±5℃, ensuring temperature stability in each temperature zone.

[0031] Each heating element has 24 independent temperature controls, enabling precise management of "one crucible, one temperature zone" and avoiding the problem of temperature interference within traditional long furnaces.

[0032] Hydrogen supply and dynamic stirring system: Hydrogen gas enters the crucible base plate 25 through the automatic gas supply assembly 15 and the gas inlet 28, and is then distributed to: Vent 26 and air supply 27: provide a basic reducing atmosphere to the bottom of the crucible, which enters the blow-jet column 32 through the vent pipe 37; pressurization chamber 39: pushes the blow-jet column 32 to extend and retract.

[0033] The extension and retraction of the blow column 32 is controlled by the balance between air pressure and the elastic force of the limit spring 305. When the hydrogen pressure P reaches the threshold When k is the spring constant, x is the displacement, and A is the cross-sectional area of ​​slider 302, the blow column 32 rises. When slider 302 rises to the position of vent hole 303, the air pressure drops suddenly, and the blow jet 32 ​​returns to its original position under the action of the spring.

[0034] Due to differences in spring stiffness coefficients, each blow-jet column 32 forms an irregular, asynchronous expansion and contraction sequence, horizontally injecting hydrogen gas through the horizontal blow-jet port 301, directly penetrating the powder bed to achieve: Enhanced gas-solid mass transfer improves reduction efficiency by approximately 30%; Break up powder agglomerates to make the particle size distribution more uniform (D50 controlled at 3~5μm). To prevent localized overheating, the temperature uniformity error should be ≤ ±8℃.

[0035] Air curtain protection and anti-oxidation design: Some of the hydrogen gas flows through the vent 33 to the gas curtain nozzle 29 and is ejected at an angle downwards, forming a cross gas curtain on the inner wall of the crucible. Calculate the air curtain velocity This ensures effective prevention of air penetration; Maintain a slightly positive pressure environment (≥50 Pa) to prevent high-temperature oxidation of molybdenum powder.

[0036] Automation of cooling and material recovery: After the reaction, the crucible enters the cooling and recovery furnace 12, where it is forcibly cooled to <100°C with inert gas, and then sequentially passes through: Powder suction component 13: Vacuum suction of molybdenum powder (residual rate <0.5%); Automatic feeding component 14: accurately dispenses quantitative material (error ±2 g) and completes the cycle.

[0037] By using the ring conveyor 21 in collaboration with multiple workstations, the traditional intermittent production mode is broken, the equipment utilization rate is increased by more than 70%, and the production capacity can reach 3 to 5 times that of traditional equipment.

[0038] Example 2 A continuous production method for a molybdenum powder continuous production apparatus includes the following steps: S1. Place the reaction crucible 23 containing molybdenum powder raw material on the rotating base 22 of the annular conveyor 21; S2, the ring conveyor 21 sequentially transports the reaction crucible 23 to each heating component 24 in the heating zone of the long reaction furnace 11; S3. When the reaction crucible 23 is moved to the position directly opposite the heating component 24, the heating component 24 moves to wrap around the bottom of the crucible for heating. At the same time, hydrogen gas is introduced into the reaction crucible 23 through the automatic gas supply component 15. The hydrogen gas drives the blower column 32 to extend and retract irregularly and spray out, stirring and reducing the raw materials in the crucible. S4. The reaction crucible 23, after the heating reaction is completed, is transported to the cooling and recovery furnace 12 for cooling. Then, the finished molybdenum powder is sucked out by the powder suction component 13 and then refilled with raw materials by the automatic feeding component 14. S5. The reaction crucible 23, after being fed, re-enters the heating zone via the ring conveyor 21 to begin the next cycle.

[0039] The embodiments of the present invention have been described above, but the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms based on the guidance of the present embodiments, all of which are within the protection scope of the present embodiments.

Claims

1. A continuous molybdenum powder production apparatus, characterized in that, include: A reaction furnace (11) is provided with a continuous reaction mechanism (2) to achieve continuous and uninterrupted production operation; The continuous reaction mechanism (2) includes a ring conveyor (21), a reaction crucible (23) and a heating component (24). The ring conveyor (21) is arrayed with rotating bases (22), and each rotating base (22) is equipped with a reaction crucible (23). Within the heating zone of the long reaction furnace (11), an independent heating component (24) is provided at a preset position corresponding to each reaction crucible (23), and the heating component (24) is configured to implement heating control with different temperature gradients for the reaction crucibles (23) at different positions. The reaction crucible (23) has an inner base (31) at its bottom, and multiple retractable blow-spray columns (32) are arrayed on the inner base (31). The gas pressure required for the retraction of each blow-spray column (32) is different. The outer wall of the blow-spray column (32) has several flat blowing holes (301) arrayed in the circumferential direction. During the heating process of the raw materials in the reaction crucible (23) by the heating component (24), hydrogen gas is introduced into the reaction crucible (23). The hydrogen gas first drives the blow-jet column (32) to perform irregular extension and retraction movements. When the blow-jet column (32) extends, hydrogen gas is sprayed horizontally through the flat blow hole (301), and the blow-jet column (32) can extend into the interior of the raw material powder after it extends.

2. The continuous molybdenum powder production apparatus according to claim 1, characterized in that, The reaction furnace (11) is elliptical in shape and is divided into two spaces: the front space is the heating zone and the back space is the cooling recovery furnace (12). The ring conveyor (21) can drive the reaction crucible (23) to heat and react in the heating zone, then transport it to the cooling recovery furnace (12), and finally re-enter the heating zone.

3. The continuous molybdenum powder production apparatus according to claim 2, characterized in that, The cooling and recovery furnace (12) is equipped with a powder suction component (13) and an automatic feeding component (14). After the reaction crucible (23) is cooled to a specified temperature, it passes through the powder suction component (13) and the automatic feeding component (14) in sequence before re-entering the heating zone. The reaction crucible (23) passes through the powder suction component (13) to suck out the raw materials after the reaction. When it passes under the automatic feeding component (14), the raw materials are refilled into the reaction crucible (23).

4. A continuous molybdenum powder production apparatus according to claim 3, characterized in that, The heating assembly (24) includes a clamping arm (241). The ends of the two mechanical arms of the clamping arm (241) are fixedly provided with outer cover plates (242). The inner walls of the two outer cover plates (242) are fixedly inlaid with heating wire tubes (243), and the two outer cover plates (242) are semi-circular. The reaction crucible (23) is moved to a position facing the heating assembly (24), and the two outer cover plates (242) are controlled to merge and wrap around the bottom periphery of the reaction crucible (23). After heating is completed, the two outer cover plates (242) are opened.

5. A continuous molybdenum powder production apparatus according to claim 4, characterized in that, A crucible base plate (25) is fixedly provided at the center of the upper wall of the rotating base (22). A vent (26) is fixedly arranged on the outer periphery of the upper wall of the crucible base plate (25), and a gas supply port (27) is fixedly provided at the center of the upper wall of the crucible base plate (25).

6. A continuous molybdenum powder production apparatus according to claim 5, characterized in that, The crucible base plate (25) is provided with an air inlet (28), and an automatic gas supply component (15) fixed to the inner wall of the reaction furnace (11) is provided on the front of the heating component (24). The air inlet (28) is connected to the air vent (26) and the gas supply port (27). When the reaction crucible (23) moves to the position of the heating component (24), hydrogen is supplied to the air inlet (28) through the automatic gas supply component (15).

7. A continuous molybdenum powder production apparatus according to claim 6, characterized in that, The crucible inner base (31) is provided with a partition plate (35). The upper space of the partition plate (35) is a pressure relief chamber (38), and the lower space of the partition plate (35) is a pressure chamber (39). The pressure chamber (39) and the pressure relief chamber (38) are independent of each other. The bottom groove of the crucible inner base (31) matches the crucible base plate (25).

8. A continuous molybdenum powder production apparatus according to claim 7, characterized in that, Each of the blow-jet columns (32) is provided with a limiting cylinder (36) at its bottom. The limiting cylinder (36) extends from the pressurization chamber (39) through the partition plate (35) into the pressurization chamber (39). The top outer wall of the limiting cylinder (36) is provided with a vent hole (303), and the bottom outer wall of the limiting cylinder (36) is provided with a pressurization hole (304). A slider (302) is slidably provided inside the limiting cylinder (36). The slider (302) is fixedly connected to the blow-jet column (32). A limiting spring (305) is provided below the slider (302). Each limiting spring (305) has a different elastic coefficient.

9. A continuous molybdenum powder production apparatus according to claim 8, characterized in that, Hydrogen gas enters the base (31) of the crucible through the vent (26) and the gas supply (27). Part of the hydrogen gas enters the blow-jet column (32) through the vent pipe (37), and part of the hydrogen gas enters the pressurization chamber (39) and then enters the limiting cylinder (36) through the pressurization hole (304), pushing the blow-jet column (32) to extend. When the slider (302) rises to the position of the vent hole (303), the gas pressure leaks, and the blow-jet column (32) is pulled back. The leaked hydrogen gas is sprayed out along the expansion gap of the blow-jet column (32). Another part of the hydrogen gas flows to the gas curtain nozzle (29) through the vent channel (33) in the thick wall of the reaction crucible (23). The gas curtain nozzle (29) is arrayed on the inside of the reaction crucible (23), and the jet direction is inclined downward to form a cross gas curtain.

10. A continuous production method for a molybdenum powder continuous production apparatus as described in claims 1-9, characterized in that, Includes the following steps: S1. Place the reaction crucible (23) containing molybdenum powder raw material on the rotating base (22) of the ring conveyor (21); S2, the ring conveyor (21) transports the reaction crucible (23) sequentially to each heating component (24) in the heating zone of the long reaction furnace (11); S3. When the reaction crucible (23) is moved to the position directly opposite the heating component (24), the heating component (24) wraps around the bottom of the crucible for heating, and at the same time, hydrogen is introduced into the reaction crucible (23) through the automatic gas supply component (15); the hydrogen drives the blower column (32) to extend and retract irregularly and spray out, stirring and reducing the raw materials in the crucible; S4. The reaction crucible (23) that has completed the heating reaction is transported to the cooling and recovery furnace (12) for cooling, and then the finished molybdenum powder is sucked out by the powder suction component (13) and then the raw materials are refilled by the automatic feeding component (14). S5. The reaction crucible (23) that has completed feeding is re-entered into the heating zone by the ring conveyor (21) to start the next cycle.

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