A preparation device and method for volatile ultrafine high-temperature rhenium powder dispersant

Abstract

The present invention belongs to the technical field of mixing and stirring, and in particular, to a device and method for preparing a volatile ultrafine high-temperature rhenium powder dispersant. The clamping disc is sleeved on one side of the horizontal stirring tank to drive the horizontal stirring tank to rotate, and the shaking component pushes the bottom of the support platform to realize repeated shaking of the support platform and the horizontal stirring tank, and the stepping motor drives the mixing rod to evenly stir the dispersant, and the generated bubbles can slide to the lower part of the horizontal stirring tank by gravity when the horizontal stirring tank is tilted, and the bubbles contact the defoaming component to complete sufficient defoaming; two groups of shaking components push the support platform obliquely, and the outer side of the support platform rotates along the movable axis to achieve a tilting effect, and the bubbles in the dispersant pass through the raised wedge-shaped bumps under the action of gravity, and then puncture the bubbles to ensure the stirring quality of the dispersant; under the elastic support of the spring, the inner scraper can be pressed against the inner wall of the horizontal stirring tank in real time, and cooperate with the rotating horizontal stirring tank to complete the cleaning of the inner wall.

Description

Technical Field

[0001] The invention belongs to the technical field of mixing and stirring, and in particular relates to a preparation device and method for a volatile ultrafine high-temperature rhenium powder dispersant. Background Art

[0002] In the field of powder metallurgy, during the powder production process, the powder is very easy to form agglomerates due to the interaction between powder particles, which affects the subsequent use of the powder, such as causing segregation during the mixing process, forming pores during the pressing and sintering process, and making it difficult to remove impurities, thus affecting the material properties. Powder particle dispersion has always been a difficult problem. In conventional methods, dispersants are added in a small number of cases, but they often bring impurities, and only materials that are not sensitive to impurities can be used; in most cases, only the existence of agglomerates can be forced to accept the result of reduced material performance. Rhenium materials are particularly sensitive to the presence of impurities, so impurities can be easily removed.

[0003] Volatile ultrafine high-temperature rhenium powder dispersant, in which the dispersing medium is a mixed liquid formed by cyclohexanol, methanol and ethanol, is generally mixed and stirred by direct stirring equipment. However, there is a dead corner at the bottom of a general stirring tank, which causes some components in the lower layer to settle, thereby reducing the quality of the dispersant product and making it difficult to clean the inner wall of the stirring tank. On the other hand, the mixing of the dispersant needs to be carried out in a low-speed environment to prevent excessive bubbles from being generated, and more bubbles will undoubtedly be generated during stirring, so that the mixed dispersant needs to undergo further defoaming process, which reduces production efficiency and increases production costs.

[0004] Therefore, a device and method for preparing a volatile ultrafine high-temperature rhenium powder dispersant are designed to solve the above problems. Summary of the invention

[0005] In order to solve the problems raised in the above background technology, the present invention provides a preparation device and method of volatile ultrafine high temperature rhenium powder dispersant to eliminate bubbles generated in a low speed environment and strengthen the shaking of the horizontal stirring tank to achieve sufficient stirring and mixing.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a preparation device of a volatile ultrafine high-temperature rhenium powder dispersant, a defoaming mixing and stirring mechanism, the defoaming mixing and stirring mechanism comprises a base, a horizontal stirring tank, a support platform, a clamping plate, a stepping motor, a driving shaft, a mixing rod and a shaking assembly, the inner side of the base is movably connected to the bottom of the supporting platform, the horizontal stirring tank is rotatably connected to the top of the supporting platform, the inner side of the clamping plate is clamped with the outer walls of both ends of the horizontal stirring tank, the stepping motor is threadedly connected to the middle of one side of the horizontal stirring tank, one end of the driving shaft is fixedly connected to the motor shaft of the stepping motor through a coupling, the mixing rod is welded and fixed to the outside of the driving shaft, the shaking assembly is rotatably connected to one side of the base, and a defoaming assembly is also provided inside the horizontal stirring tank;

[0007] The clamping disk is sleeved on one side of the horizontal stirring tank to drive the horizontal stirring tank to rotate, the shaking assembly pushes the bottom of the support platform to achieve repeated shaking of the support platform and the horizontal stirring tank, and the stepping motor drives the mixing rod to evenly stir the dispersant. The generated bubbles can slide to the lower part of the horizontal stirring tank by gravity when the horizontal stirring tank is tilted, and the bubbles contact the defoaming assembly to complete sufficient defoaming.

[0008] Preferably, the defoaming assembly includes a wedge-shaped protrusion and a compression spring, the wedge-shaped protrusion is slidably connected to the interior of the horizontal mixing tank, and the two ends of the compression spring are fixedly connected to the wedge-shaped protrusion and the opposite side surfaces of the horizontal mixing tank respectively.

[0009] Preferably, the shaking assembly includes a lifting cylinder, a connecting rod and a hinged ear plate, the piston end of the lifting cylinder is fixedly connected to the inner side of the connecting rod, the outer side of the connecting rod is hinged to the middle inner side of the hinged ear plate, and the hinged ear plate is fixedly connected to one side of the support platform.

[0010] Preferably, a movable shaft is further provided on a side of the support platform away from the hinged ear plate, the movable shaft is fixedly connected to the outer side of the bottom of the support platform, and the movable shaft is rotatably connected to the inner side of the base.

[0011] Preferably, a reduction motor, a connecting shaft and a locking gear are also provided on the outer side of the support platform. The motor shaft of the reduction motor is fixedly connected to one end of the connecting shaft through a coupling. The connecting shaft is rotatably connected to the outer side of the top of the support platform, and the locking gear is fixedly connected to the middle of the connecting shaft.

[0012] Preferably, an inner rack meshing with the outer teeth of the locking gear is also provided inside the clamping disk.

[0013] Preferably, a fixed frame, a rotating shaft, a sleeve frame, a thrust cylinder, a push rod, an insert plate and a connecting plate are further provided on the side of the support platform away from the clamping plate, the fixed frame is fixedly connected to the top of the support platform, the rotating shaft is rotatably connected to the inner side of the fixed frame, the sleeve frame is rotatably connected to the outer side of the rotating shaft, the piston end of the thrust cylinder is fixedly connected to one end of the push rod, the outer side of the push rod is fixedly connected to the middle part of the insert plate, the insert plate is plugged into the inside of the connecting plate, and the connecting plate is fixedly connected to one side of the drive shaft.

[0014] Preferably, an outward expansion bracket, an inner scraper and a limit spring are also provided on one side of the insert plate. The outward expansion bracket is fixedly connected to the outer side of the insert plate, and the inner scraper is slidably sleeved inside the outward expansion bracket. Both sides of the limit spring are respectively fixedly connected to the opposite side surfaces of the outward expansion bracket and the inner scraper.

[0015] Preferably, a slot matching the size of the plug-in disk is further provided inside the connection disk, and a blind hole equal to the size of the plug-in disk is further provided inside the sleeve frame.

[0016] A method for preparing a volatile ultrafine high-temperature rhenium powder dispersant is also proposed, which is carried out using the above-mentioned device and includes the following steps:

[0017] S1: prepare dispersion medium;

[0018] S2: Stir the dispersion medium thoroughly and then let it stand for 0.5-2 hours;

[0019] S3: Weigh the corresponding weight of ammonium acetate according to the volume of the dispersant and put it into the dispersion medium;

[0020] S4: Stir thoroughly until the ammonium acetate is completely dissolved, thereby obtaining the volatile ultrafine high-temperature rhenium powder dispersant of the present invention;

[0021] Among them, the dispersion medium in step S1 is a mixed solution formed by cyclohexanol, methanol and ethanol. The dispersion medium is calculated by volume, cyclohexanol accounts for 10%~20%, methanol accounts for 25%~35%, and the remaining component is ethanol. The dispersant in step S3 is ammonium acetate, and 10-50g of ammonium acetate is dissolved in each liter of dispersion medium.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. In the present invention, the dispersant can be spread evenly in the tank through the horizontal stirring tank, and the stirring mixing rod is used to achieve a sufficient stirring effect to prevent bottom sedimentation.

[0024] 2. In the present invention, with the elastic support of the spring, the inner scraper can be pressed against the inner wall of the horizontal mixing tank in real time, and cooperate with the rotating horizontal mixing tank to complete the cleaning of the inner wall.

[0025] 3. In the present invention, two sets of shaking components push the support table obliquely, and the outer side of the support table rotates along the movable axis to achieve a tilting effect. The bubbles in the dispersant pass through the raised wedge-shaped bumps under the action of gravity, and then puncture the bubbles, thereby ensuring the stirring quality of the dispersant. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0027] Figure 1 It is a structural schematic diagram of the present invention;

[0028] Figure 2 It is a schematic diagram of the structure of the shaking assembly in the present invention;

[0029] Figure 3 This is a rendering of the base being lifted in the present invention;

[0030] Figure 4 It is an exploded view of the clamping plate and the horizontal stirring tank in the present invention;

[0031] Figure 5 It is a cross-sectional view of the interior of the horizontal stirring tank in the present invention;

[0032] Figure 6 This is a disassembly diagram of the insert plate and the connection plate in the present invention;

[0033] Figure 7 This is a diagram showing the expansion effect of the limit spring in the present invention;

[0034] Figure 8 It is a cross-sectional view of one side of the horizontal stirring tank in the present invention;

[0035] In the figure: 1. defoaming mixing and stirring mechanism; 2. base; 3. horizontal mixing tank; 4. support platform; 5. snap-on disk; 6. stepping motor; 7. drive shaft; 8. mixing rod; 9. shaking assembly; 10. defoaming assembly; 11. wedge-shaped protrusion; 12. compression spring; 13. lifting cylinder; 14. connecting rod; 15. hinged ear plate; 16. movable shaft; 17. reduction motor; 18. connecting shaft; 19. locking gear; 20. embedded rack; 21. fixed frame; 22. rotating shaft; 23. sleeve frame; 24. thrust cylinder; 25. push rod; 26. insert disk; 27. connecting disk; 28. outward expansion bracket; 29. ​​inner scraper; 30. limit spring; 31. slot; 32. blind hole; 33. cone; 34. through hole; 35. step. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] like Figure 1-Figure 8 The preparation device of a volatile ultrafine high-temperature rhenium powder dispersant shown in the figure comprises a defoaming mixing and stirring mechanism 1, which comprises a base 2, a horizontal stirring tank 3, a support platform 4, a clamping plate 5, a stepping motor 6, a driving shaft 7, a mixing rod 8 and a shaking assembly 9. The inner side of the base 2 is movably connected to the bottom of the supporting platform 4, the horizontal stirring tank 3 is rotatably connected to the top of the supporting platform 4, the inner side of the clamping plate 5 is clamped with the outer walls of both ends of the horizontal stirring tank 3, the stepping motor 6 is threadedly connected to the middle part of one side of the horizontal stirring tank 3, one end of the driving shaft 7 is fixedly connected to the motor shaft of the stepping motor 6 through a coupling, the mixing rod 8 is welded and fixed to the outer side of the driving shaft 7, the shaking assembly 9 is rotatably connected to one side of the base 2, and a defoaming assembly 10 is also arranged inside the horizontal stirring tank 3;

[0038] The clamping plate 5 is sleeved on one side of the horizontal stirring tank 3 to drive the horizontal stirring tank 3 to rotate, and the shaking component 9 pushes the bottom of the support platform 4 to realize repeated shaking of the support platform 4 and the horizontal stirring tank 3. The stepping motor 6 drives the mixing rod 8 to evenly stir the dispersant. The generated bubbles can slide to the lower part of the horizontal stirring tank 3 by gravity when the horizontal stirring tank 3 is tilted, and the bubbles contact the defoaming component 10 to complete sufficient defoaming.

[0039] The through hole 34 of the clamping plate 5 is clamped on the outer side of the horizontal mixing tank 3. The staff can step on the step 35, open the middle top cover of the horizontal mixing tank 3, and put the dispersant mixture into the tank in proportion. The dispersant can be spread evenly in the tank through the horizontal mixing tank 3, and the stirring mixing rod 8 can achieve a full stirring effect to prevent bottom sedimentation.

[0040] The defoaming assembly 10 includes a wedge-shaped protrusion 11 and a compression spring 12. The wedge-shaped protrusion 11 is slidably connected inside the horizontal mixing tank 3, and both ends of the compression spring 12 are fixedly connected to the wedge-shaped protrusion 11 and the opposite side surfaces of the horizontal mixing tank 3 respectively.

[0041] The horizontal mixing tank 3 is kept in an inclined state by the lifting cylinder 13. Under the action of gravity, the stirred dispersant and the internal bubbles flow downward along the inner wall. During this period, the bubbles will contact the conical surface 33 of the wedge-shaped protrusion 11, and the conical surface 33 will pierce the bubbles to achieve a defoaming effect. Then, the lifting cylinder 13 is reversed to make the dispersant contact the wedge-shaped protrusion 11 back and forth, thereby improving the defoaming efficiency.

[0042] The shaking assembly 9 includes a lifting cylinder 13, a connecting rod 14 and a hinged ear plate 15. The piston end of the lifting cylinder 13 is fixedly connected to the inner side of the connecting rod 14, the outer side of the connecting rod 14 is hinged to the middle inner side of the hinged ear plate 15, and the hinged ear plate 15 is fixedly connected to one side of the support platform 4.

[0043] During the shaking process, the piston end of the lifting cylinder 13 pushes the connecting rod 14, and the connecting rod 14 pushes the base 2 obliquely outward along the hinge of the hinged ear plate 15. With the cooperation of the support platform 4 and the fixed shaft slidably sleeved inside the base 2, the support platform 4 and the horizontal mixing tank 3 are tilted, thereby disrupting the directional fluidity of the internal dispersant and improving the stirring effect.

[0044] A movable shaft 16 is also provided on one side of the support platform 4 away from the hinged ear plate 15 . The movable shaft 16 is fixedly connected to the outer side of the bottom of the support platform 4 , and is rotatably connected to the inner side of the base 2 .

[0045] A reduction motor 17, a connecting shaft 18 and a locking gear 19 are also provided on the outside of the support platform 4. The motor shaft of the reduction motor 17 is fixedly connected to one end of the connecting shaft 18 through a coupling. The connecting shaft 18 is rotatably connected to the outside of the top of the support platform 4, and the locking gear 19 is fixedly connected to the middle of the connecting shaft 18.

[0046] An internally-embedded rack 20 meshing with the external teeth of the locking gear 19 is also provided inside the clamping disc 5 .

[0047] The reduction motor 17 on the outside of the support platform 4 is started through the control end, and its motor shaft drives the connecting shaft 18 to rotate, and the connecting shaft 18 drives the locking gear 19 in the middle to rotate. Since the outer teeth of the locking gear 19 are always engaged with the inner side of the clamping plate 5, under the gear transmission, the clamping plate 5 can drive the horizontal mixing tank 3 to rotate at a reduced speed along the top sleeve of the support platform 4, and cooperate with the inner scraper 29 to complete the scraping and cleaning of the inner wall, ensuring that the dispersant adheres to the inside of the horizontal mixing tank 3 and the discharge amount is guaranteed.

[0048] A fixed frame 21, a rotating shaft 22, a sleeve frame 23, a thrust cylinder 24, a push rod 25, an insert disk 26 and a connecting disk 27 are also provided on the side of the support platform 4 away from the clamping disk 5. The fixed frame 21 is fixedly connected to the top of the support platform 4, the rotating shaft 22 is rotatably connected to the inner side of the fixed frame 21, the sleeve frame 23 is rotatably connected to the outer side of the rotating shaft 22, the piston end of the thrust cylinder 24 is fixedly connected to one end of the push rod 25, the outer side of the push rod 25 is fixedly connected to the middle part of the insert disk 26, the insert disk 26 is plugged into the inside of the connecting disk 27, and the connecting disk 27 is fixedly connected to one side of the drive shaft 7.

[0049] An outward expansion bracket 28, an inner scraper 29 and a limit spring 30 are also provided on one side of the insert plate 26. The outward expansion bracket 28 is fixedly connected to the outer side of the insert plate 26, and the inner scraper 29 is slidably sleeved inside the outward expansion bracket 28. Both sides of the limit spring 30 are respectively fixedly connected to the opposite side surfaces of the outward expansion bracket 28 and the inner scraper 29.

[0050] By electrically starting the stepper motor 6 on the outside, the dispersant mixture spread inside the horizontal mixing tank 3 is fully stirred. In this process, the propulsion cylinder 24 inside the sleeve frame 23 can be started synchronously, and its piston end pushes the push rod 25, and the push rod 25 pushes the insert plate 26. The insert plate 26 moves inward along the blind hole 32 and approaches the connecting plate 27 until the insert plate 26 is firmly inserted into the inside of the slot 31. At this time, the running drive shaft 7 can drive the outer expansion bracket 28 and the inner scraper 29 to rotate, and at the same time, the outer rotating shaft 22 can rotate along the connection of the fixed frame 21 to prevent jamming, so that the device can achieve the effect of stirring and cleaning.

[0051] The outward expansion bracket 28 outside the insert plate 26 is always located in the horizontal mixing tank 3 to ensure the smooth movement of the insert plate 26. The inner scraper 29 can contact the wedge-shaped protrusion 11 along the conical surface 33 when rotating, so that the wedge-shaped protrusion 11 shrinks inward under elastic support after contacting the inner scraper 29, effectively avoiding rotation jamming.

[0052] A slot 31 matching the size of the inserting disk 26 is also provided inside the connecting disk 27 .

[0053] A blind hole 32 having the same size as the inserting plate 26 is also provided inside the sleeve frame 23 .

[0054] A method for preparing a volatile ultrafine high-temperature rhenium powder dispersant is also proposed. The obtained ultrafine high-temperature rhenium powder dispersant can eliminate the attraction between powder particles and break up powder agglomerations during the rhenium powder mixing process, thereby achieving...

[0055] The dispersion medium is a mixed solution of cyclohexanol, methanol and ethanol, wherein the dispersion medium, by volume, comprises 10% to 20% cyclohexanol, 25% to 35% methanol, and the remaining component is ethanol; the dispersant is ammonium acetate, and 10-50g of ammonium acetate is dissolved in each liter of dispersion medium. The preparation method comprises the following steps:

[0056] S1: preparing a dispersion medium according to the volume ratio;

[0057] S2: Stir the dispersion medium thoroughly and then let it stand for 0.5-2 hours;

[0058] S3: Weigh the corresponding weight of ammonium acetate according to the volume of the dispersant and put it into the dispersion medium;

[0059] S4: Stir thoroughly until the ammonium acetate is completely dissolved, and the volatile ultrafine high-temperature rhenium powder dispersant of the present invention can be obtained.

[0060] Principle of action: Alcohol molecules will not chemically react with the rhenium metal powder itself, but can make the powder wet to achieve the purpose of breaking up the agglomeration, and can react with the surface oxide layer of the rhenium metal powder to generate electrostatic repulsion between the powder particles. The presence of a variety of alcohol liquids can enhance the suspension effect of the rhenium metal powder in the solution, and ammonium acetate can be dispersed on the surface of the rhenium metal powder after the dispersant evaporates to form a protective layer to prevent the powder from agglomerating. After the powder is used, cyclohexanol, methanol, ethanol, and ammonium acetate can be removed by baking or sintering.

[0061] Compared with the prior art: the formula can achieve the effect of dispersing powder during use. During use, the formula does not require too much, and only needs to keep the powder moist to achieve the dispersion effect, which can facilitate mixing and ball milling. After the powder is used, the dispersant can be completely volatilized by drying, sintering, etc., without any residue, and will not bring impurities to the powder.

[0062] Specific preparation process example:

[0063] S1 Use a beaker to prepare 1 liter of dispersion medium, including 160 ml of cyclohexanol, 270 ml of methanol, and 570 ml of ethanol;

[0064] S2 was stirred with a glass rod for 5 minutes and allowed to stand for 1 hour;

[0065] S3 weigh 30 g of ammonium acetate and put it into the dispersion medium;

[0066] S4 was stirred for 2 minutes, and the ammonium acetate was completely dissolved to obtain a dispersant;

[0067] S5 Weigh 2kg of ultrafine rhenium powder, pour into the dispersion medium, and stir until completely wet;

[0068] S6: placing the ultrafine rhenium powder and the dispersant together into a ball mill, and ball milling the ultrafine rhenium powder;

[0069] S7: ball milling is finished and the material is taken out;

[0070] S8 dries the material to obtain dispersed ultrafine rhenium powder.

[0071] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A preparation device for a volatile ultrafine high-temperature rhenium powder dispersant, comprising a defoaming mixing and stirring mechanism (1), characterized in that: The defoaming mixing and stirring mechanism (1) comprises a base (2), a horizontal stirring tank (3), a support platform (4), a clamping plate (5), a stepping motor (6), a driving shaft (7), a mixing rod (8) and a shaking assembly (9); the inner side of the base (2) is movably connected to the bottom of the supporting platform (4); the horizontal stirring tank (3) is rotatably connected to the top of the supporting platform (4); the inner side of the clamping plate (5) is clamped to the outer walls of both ends of the horizontal stirring tank (3); the stepping motor (6) is threadedly connected to the middle part of one side of the horizontal stirring tank (3); one end of the driving shaft (7) is fixedly connected to the motor shaft of the stepping motor (6) through a coupling; the mixing rod (8) is welded and fixed to the outer side of the driving shaft (7); the shaking assembly (9) is rotatably connected to one side of the base (2); and a defoaming assembly (10) is also provided inside the horizontal stirring tank (3); The defoaming component (10) comprises a wedge-shaped protrusion (11) and a compression spring (12), wherein the wedge-shaped protrusion (11) is slidably connected inside the horizontal stirring tank (3), and two ends of the compression spring (12) are respectively fixedly connected to the wedge-shaped protrusion (11) and the opposite side surface of the horizontal stirring tank (3); The shaking assembly (9) comprises a lifting cylinder (13), a connecting rod (14) and a hinged ear plate (15), wherein the piston end of the lifting cylinder (13) is fixedly connected to the inner side of the connecting rod (14), the outer side of the connecting rod (14) is hinged to the inner side of the middle part of the hinged ear plate (15), and the hinged ear plate (15) is fixedly connected to one side of the support platform (4); A movable shaft (16) is also provided on a side of the support platform (4) away from the hinged ear plate (15), wherein the movable shaft (16) is fixedly connected to the outer side of the bottom of the support platform (4), and the movable shaft (16) is rotatably connected to the inner side of the base (2); The clamping plate (5) is sleeved on one side of the horizontal stirring tank (3) to drive the horizontal stirring tank (3) to rotate, the shaking component (9) pushes the bottom of the support platform (4) to achieve repeated shaking of the support platform (4) and the horizontal stirring tank (3), and the stepping motor (6) drives the mixing rod (8) to evenly stir the dispersant. When the horizontal stirring tank (3) is tilted, the generated bubbles can slide to the lower part of the horizontal stirring tank (3) by gravity, and the bubbles contact the defoaming component (10) to complete sufficient defoaming.

2. The device for preparing a volatile ultrafine high-temperature rhenium powder dispersant according to claim 1, characterized in that: A reduction motor (17), a connecting shaft (18) and a locking gear (19) are also provided on the outer side of the support platform (4); the motor shaft of the reduction motor (17) is fixedly connected to one end of the connecting shaft (18) via a coupling; the connecting shaft (18) is rotatably connected to the outer side of the top of the support platform (4); and the locking gear (19) is fixedly connected to the middle of the connecting shaft (18).

3. The device for preparing a volatile ultrafine high-temperature rhenium powder dispersant according to claim 2, characterized in that: An internally-embedded rack (20) is also provided inside the clamping disc (5) and meshes with the external teeth of the locking gear (19).

4. The device for preparing a volatile ultrafine high-temperature rhenium powder dispersant according to claim 3, characterized in that: A fixed frame (21), a rotating shaft (22), a sleeve frame (23), a thrust cylinder (24), a push rod (25), an insertion plate (26) and a connecting plate (27) are further provided on a side of the support platform (4) away from the clamping plate (5); the fixed frame (21) is fixedly connected to the top of the support platform (4); the rotating shaft (22) is rotationally connected to the inner side of the fixed frame (21); the sleeve frame (23) is rotationally connected to the outer side of the rotating shaft (22); the piston end of the thrust cylinder (24) is fixedly connected to one end of the push rod (25); the outer side of the push rod (25) is fixedly connected to the middle of the insertion plate (26); the insertion plate (26) is inserted into the interior of the connecting plate (27); and the connecting plate (27) is fixedly connected to one side of the drive shaft (7).

5. The device for preparing a volatile ultrafine high-temperature rhenium powder dispersant according to claim 4, characterized in that: An outward expansion bracket (28), an inner scraper (29) and a limit spring (30) are also provided on one side of the insert plate (26); the outward expansion bracket (28) is fixedly connected to the outer side of the insert plate (26); the inner scraper (29) is slidably sleeved inside the outward expansion bracket (28); and two sides of the limit spring (30) are respectively fixedly connected to opposite side surfaces of the outward expansion bracket (28) and the inner scraper (29).

6. The device for preparing a volatile ultrafine high-temperature rhenium powder dispersant according to claim 4, characterized in that: The connection disk (27) is further provided with a slot (31) whose size matches that of the insertion disk (26), and the sleeve frame (23) is further provided with a blind hole (32) whose size is equal to that of the insertion disk (26).

7. A method for preparing a volatile ultrafine high-temperature rhenium powder dispersant, using the device according to any one of claims 1 to 6, characterized in that: The following steps are involved: S1: prepare dispersion medium; S2: Stir the dispersion medium thoroughly and then let it stand for 0.5-2 hours; S3: Weigh the corresponding weight of ammonium acetate according to the volume of the dispersant and put it into the dispersion medium; S4: Stir thoroughly until the ammonium acetate is completely dissolved, thereby obtaining the volatile ultrafine high-temperature rhenium powder dispersant of the present invention; Among them, the dispersion medium in step S1 is a mixed solution formed by cyclohexanol, methanol and ethanol. The dispersion medium is calculated by volume, cyclohexanol accounts for 10%~20%, methanol accounts for 25%~35%, and the remaining component is ethanol. The dispersant in step S3 is ammonium acetate, and 10-50g of ammonium acetate is dissolved in each liter of dispersion medium.

Images