A manufacturing device and manufacturing process for titanium carbonitride powder production

Abstract

The present invention discloses a manufacturing device and a manufacturing process for the production of titanium carbonitride powder, which relates to the technical field of cermet powder, and includes a frame, a heating furnace, a conveying mechanism and a feeding mechanism. The feeding mechanism includes a feeding pipe, a discharging pipe and a powder processing module. The feeding pipe and the discharging pipe are respectively arranged on both sides of the heating furnace and are both connected with branch pipes. The powder processing module is arranged on the branch pipe of the feeding pipe. The powder processing module includes a base, the base is a hollow structure and an outer barrel is fixed on the upper side. The outer barrel is a hollow structure, and a first motor is fixed on the upper side of the outer barrel. An inner barrel is rotatably arranged inside the outer barrel, and the driving end of the first motor is connected to the top of the inner barrel for driving the inner barrel to rotate. The inner barrel is a hollow structure and a circle of grinding blocks is arranged on the lower side. The present invention can check the state of the powder material and improve the production quality.

Description

Technical Field

[0001] The present invention relates to the technical field of cermet powders, and specifically to a manufacturing device and a manufacturing process for the production of titanium carbonitride powder. Background Art

[0002] Titanium carbonitride powder is a non-oxide ceramic material with excellent properties. Due to its high melting point, high strength, strong wear resistance, corrosion resistance and oxidation resistance, titanium carbonitride-based ceramics have been widely used in the fields of cutting, high-temperature resistant materials, measuring tools, petroleum and chemical industries, and watch exteriors.

[0003] The preparation methods of titanium carbonitride powder mainly include: ammonolysis method, high-temperature solid solution method, and carbothermal reduction nitridation method, etc. Among them, the carbothermal reduction nitridation method is a process that uses titanium dioxide and carbon powder as raw materials to synthesize titanium carbonitride powder by high-temperature reduction in nitrogen. The size and morphology of the products of the carbothermal reduction method can be controlled by process parameters, and it is widely used in industrial large-scale production.

[0004] The carbothermal reduction method generally uses a tube furnace or a resistance furnace as the heating source. And in order to ensure sufficient reaction, before putting into the heating source, titanium dioxide and carbon powder need to be mixed in a certain proportion through grinding to make the material powder distribution more uniform. In actual operation, titanium dioxide powder has hydrophilicity and is proportional to its surface area. Although it will be ground before mixing, due to the large feeding amount, local moisture absorption, agglomeration and caking occur during mixing, storage and transportation, thus reducing the overall finished product quality during the final heating process. Summary of the Invention

[0005] The purpose of the present invention is to provide a manufacturing device and a manufacturing process for the production of titanium carbonitride powder to solve the problems raised in the above background art.

[0006] To solve the above technical problems, the present invention provides the following technical solution: A manufacturing device for the production of titanium carbonitride powder, including a frame, a heating furnace, a conveying mechanism and a feeding mechanism. The heating furnace is fixed on the frame and is used to heat the mixed powder of titanium dioxide and carbon powder. The conveying mechanism is arranged on the frame and is configured with the heating furnace to convey the mixed powder. The feeding mechanism is sleeved on the conveying mechanism and is used for feeding and discharging materials.

[0007] According to the above technical solution, the feeding mechanism includes a feeding pipe, a discharging pipe and a powder treatment module. Among them, the feeding pipe and the discharging pipe are respectively arranged on both sides of the heating furnace and are both connected with branch pipes. The powder treatment module is arranged on the branch pipe of the feeding pipe and is used for deeply treating the mixed powder before it is put into the heating furnace.

[0008] According to the above technical solution, the powder treatment module includes a base, the base is of a hollow structure and an outer barrel is fixed on the upper side. The outer barrel is of a hollow structure, and a first motor is fixed on the upper side of the outer barrel. An inner barrel is rotatably arranged inside the outer barrel, and the driving end of the first motor is connected to the top of the inner barrel for driving the inner barrel to rotate. The inner barrel is of a hollow structure and a circle of grinding blocks is arranged on the lower side.

[0009] According to the above technical solution, the convex surface of the grinding block is close to the inner wall of the outer barrel, and the height is higher than the upper surface of the base by a certain distance. The upper side of the grinding block is the feeding area, and the lower side of the grinding block is the discharging area.

[0010] According to the above technical solution, the outer barrel is provided with a first feeding port and a second feeding port relative to the feeding area, which are respectively used for the input of titanium dioxide powder and carbon powder. The first feeding port is externally connected to a titanium dioxide powder input device, and the second feeding port is externally connected to a carbon powder input device.

[0011] According to the above technical solution, the inner barrel is provided with a circle of first through holes relative to the lower side of the grinding block, and the base is provided with an adapter ring relative to the lower side of the inner barrel. The adapter ring is provided with a circle of second through holes with the same specifications as the first through holes.

[0012] According to the above technical solution, a fixing plate is installed inside the inner barrel, an electric push rod is arranged on the fixing plate, and a push plate is fixed at the driving end of the electric push rod.

[0013] According to the above technical solution, a number of baffle plates are arranged at intervals at the bottom of the inner barrel, and a sieve plate is attached to the base relative to the baffle plates. The sieve plate is provided with a sieve hole area and a closed area that are the same in number and area as each baffle plate.

[0014] According to the above technical solution, the outer barrel is provided with a first input / output port relative to the upper side of the grinding block, and the outer barrel is provided with a second input / output port relative to the lower side of the grinding block.

[0015] According to the above technical solution, the first input / output port and the second input / output port are connected to a first three-way valve. The first three-way valve is connected to an air pump. The air pump is connected to a second three-way valve. One interface of the second three-way valve is connected to a sieve box, and the other interface of the second three-way valve is communicated with a feed pipe. The sieve box is connected to the feed pipe and a switching valve is arranged at the connection.

[0016] According to the above technical solution, a sieve mesh is arranged inside the sieve box, and the sieve mesh is connected to a gravity sensing module for detecting the gravity change of the sieve mesh.

[0017] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: In the present invention, by providing a powder treatment module, titanium dioxide and carbon powder can be ground and mixed before being put into the heating furnace, ensuring that the mixed material during final heating is in a dispersed state, improving the sufficiency of the reaction; through components such as an air pump and a sieve box connected to the powder treatment module, the state and quality of the powder material can be analyzed according to the residue of the mixed material after sieving, eliminating the reasons for the unqualified material quality, and improving the quality and convenience of subsequent production. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The 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 to the present invention. In the drawings:

[0019] Figure 1 is a schematic diagram of the overall structure of the manufacturing equipment of the present invention;

[0020] Figure 2 is a cross-sectional view of the powder treatment module of the present invention;

[0021] Figure 3 is the present invention Figure 2 magnified schematic view of Area A;

[0022] Figure 4 is a schematic diagram of the structure of the connection ring of the present invention;

[0023] Figure 5 is a schematic diagram of the structure of the retaining piece of the present invention;

[0024] Figure 6 is a schematic diagram of the structure of the sieve tray of the present invention;

[0025] Figure 7 is a schematic diagram of the connection structure of the first input / output port and the second input / output port of the present invention;

[0026] Figure 8 is a cross-sectional view of the manufacturing equipment of the present invention;

[0027] In the figure: 1, frame; 2, heating furnace; 21, furnace body; 22, hearth; 23, heating tube; 24, quartz tube; 25, cooling zone; 3, conveying mechanism; 31, motor two; 32, gear set; 33, rotating shaft; 34, propeller blade; 35, stirring blade; 4, feeding pipe; 5, discharging pipe; 6, branch pipe; 70, base; 701, connecting ring; 702, through hole two; 71, outer barrel; 711, feeding port one; 712, feeding port two; 713, input / output port one; 714, input / output port two; 72, motor one; 73, inner barrel; 731, grinding block; 732, feeding area; 733, discharging area; 734, through hole one; 74, fixing plate; 75, electric push rod; 76, pushing plate; 77, retaining piece; 78, sieve plate; 781, sieve hole area; 782, closed area; 80, titanium dioxide powder input device; 81, carbon powder input device; 82, three-way valve one; 83, air pump; 84, three-way valve two; 85, sieve box; 851, sieve mesh; 86, switching valve; 9, inert gas conveying pipe. Detailed implementation manners

[0028] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0029] Please refer to Figure 1-8 , the present invention provides a technical solution: A manufacturing device for the production of titanium carbonitride powder, including a frame 1, a heating furnace 2, a conveying mechanism 3 and a feeding mechanism. The heating furnace 2 is fixed on the frame 1 and is used to heat the mixed powder of titanium dioxide and carbon powder. The conveying mechanism 3 is installed on the frame 1 and is arranged in cooperation with the heating furnace 2 for conveying the mixed powder. The feeding mechanism is sleeved on the conveying mechanism 3 and is used for feeding and discharging materials;

[0030] The feeding mechanism includes a feeding pipe 4, a discharging pipe 5 and a powder processing module. The feeding pipe 4 and the discharging pipe 5 are respectively arranged on both sides of the heating furnace 2 and are both connected with a branch pipe 6. The powder processing module is arranged on the branch pipe 6 of the feeding pipe 4 and is used for deeply processing the mixed powder before it is put into the heating furnace 2;

[0031] The powder processing module includes a base 70. The base 70 is a hollow structure and an outer barrel 71 is fixed on the upper side. The outer barrel 71 is a hollow structure. A motor one 72 is fixed on the upper side of the outer barrel 71. An inner barrel 73 is rotatably arranged inside the outer barrel 71. The driving end of the motor one 72 is connected to the top of the inner barrel 73 for driving the inner barrel 73 to rotate. The inner barrel 73 is a hollow structure and a circle of grinding blocks 731 is arranged on the lower side.

[0032] It should be noted that the convex surface of the grinding block 731 is close to the inner wall of the outer barrel 71 and is higher than the upper surface of the base 70 by a certain distance. The upper side of the grinding block 731 is the feeding area 732, and the lower side of the grinding block 731 is the unloading area 733. When the motor 1 72 is started, it drives the inner barrel 73 to rotate, thereby driving the grinding block 731 to rotate.

[0033] Furthermore, the outer barrel 71 is provided with a feeding port 1 711 and a feeding port 2 712 relative to the feeding area 732, which are used for feeding titanium dioxide powder and carbon powder respectively, wherein the feeding port 1 711 is externally connected to the titanium dioxide powder input device 80, and the feeding port 2 712 is externally connected to the carbon powder input device 81.

[0034] In one embodiment, the inner barrel 73 has a circle of through holes 734 on the lower side relative to the grinding block 731 , and the base 70 has a connecting ring 701 on the lower side relative to the inner barrel 73 , and the connecting ring 701 has a circle of through holes 702 with the same specifications as the through holes 734 .

[0035] The supplementary explanation based on the above structure is as follows: During the rotation of the inner barrel 73, the through hole 1 734 and the through hole 2 702 will appear in two states: overlapped and staggered. When the through hole 1 734 and the through hole 2 702 overlap, the inner barrel 73 is connected to the outer barrel 71; when the through hole 1 734 and the through hole 2 702 are staggered, the inner barrel 73 and the outer barrel 71 are not connected. In order to accurately control the positional relationship between the through hole 1 734 and the through hole 2 702, preferably, the connecting ring 701 is provided with a corresponding pressure sensing module on the inner wall between each two through holes 2 702. When the through hole 1 734 and the through hole 2 702 overlap, the pressure sensing module corresponds to the outer surface of the inner barrel 73 and can receive the pressure signal brought by the inner barrel 73; when the through hole 1 734 and the through hole 2 702 are staggered, the pressure sensing module corresponds to the through hole 1 734 and cannot detect the pressure signal.

[0036] like Figure 2 As shown, a fixing plate 74 is installed in the inner barrel 73 , an electric push rod 75 is provided on the fixing plate 74 , and a push plate 76 is fixed to the driving end of the electric push rod 75 .

[0037] Further, such as Figures 4-6 As shown, a plurality of baffles 77 are spaced apart at the bottom of the inner barrel 73 , and a sieve plate 78 is provided on the base 70 in close contact with the baffles 77 . The sieve plate 78 is provided with sieve hole areas 781 and closed areas 782 , which are consistent in number and area with the baffles 77 .

[0038] In actual operation, the sieve plate 78 is fixed, and the baffle 77 rotates with the inner barrel 73. When the baffle 77 corresponds to the sieve hole area 781, the inner barrel 73 is not connected to the base 70; when the baffle 77 corresponds to the closed area 782, the inner barrel 73 is connected to the base 70. Preferably, when setting, the overlapping state of the through hole one 734 and the through hole two 702 corresponds to the overlapping state of the baffle 77 and the sieve hole area 781; the staggered state of the through hole one 734 and the through hole two 702 corresponds to the overlapping state of the baffle 77 and the closed area 782.

[0039] In one embodiment, as Figure 7 shown, an input / output port one 713 is provided on the upper side of the outer barrel 71 relative to the grinding block 731, and an input / output port two 714 is provided on the lower side of the outer barrel 71 relative to the grinding block 731.

[0040] The input / output port one 713 and the input / output port two 714 are connected to a three-way valve one 82, the three-way valve one 82 is connected to an air pump 83, the air pump 83 is connected to a three-way valve two 84, one interface of the three-way valve two 84 is connected to a sieve box 85, the other interface of the three-way valve two 84 is connected to the feed pipe 4, and the sieve box 85 is connected to the feed pipe 4 and a switching valve 86 is provided at the connection.

[0041] Furthermore, a sieve mesh 851 is provided in the sieve box 85, and the sieve mesh 851 is connected to a gravity sensing module for detecting the gravity change of the sieve mesh 851.

[0042] As Figure 8 shown, the heating furnace 2 includes a furnace body 21, a furnace chamber 22, heating tubes 23 and a quartz tube 24. The furnace chamber 22 is fixed inside the furnace body 21, the heating tubes 23 are provided on the inner surface of the furnace chamber 22, and the quartz tube 24 is penetrated in the furnace chamber 22.

[0043] It should be added that: a cooling area 25 is provided below the furnace chamber 22 in the furnace body 21 for installing cooling components such as fans. The furnace chamber 22 is used for heat preservation to prevent heat loss; the heating tubes 23 are used for heating; the quartz tube 24 is filled with a mixed powder. Both ends of the quartz tube 24 are respectively connected to the feed pipe 4 and the discharge pipe 5.

[0044] The conveying mechanism 3 includes a motor two 31, a gear set 32 and a rotating shaft 33. The rotating shaft 33 is penetrated inside the quartz tube 24, and a propeller blade 34 and a stirring blade 35 are arranged at intervals on the rotating shaft 33 for conveying powder and stirring powder respectively, and the gear set 32 is respectively connected to the motor two 31 and the rotating shaft 33.

[0045] An inert gas conveying pipe 9 is connected to the feed pipe 4 and the discharge pipe 5 for inputting or outputting inert gas into the quartz tube 24.

[0046] In actual operation, the motor two 31 drives the rotating shaft 33 to rotate through the gear set 32.

[0047] The specific manufacturing process is as follows:

[0048] Step 1: Pretreatment: titanium dioxide and carbon powder are screened, cleaned, dried, ground and stored separately;

[0049] Step 2: feeding, the titanium dioxide powder input device 80 and the carbon powder input device 81 input a certain amount of material powder into the feeding area 732 according to a set ratio;

[0050] Step 3: Grinding. The motor 1 72 is started to drive the grinding block 731 to rotate. The powder in the feeding area 732 is ground by the grinding block 731, and the qualified material falls into the unloading area 733.

[0051] Step 4: Extracting materials. The inner barrel 73 rotates until the through hole 1 734 and the through hole 2 702 overlap. At this time, the inner barrel 73 is not connected to the base 70. The electric push rod 75 pulls the push plate 76 upward. Under the action of negative pressure, the qualified powder in the unloading area 733 is pumped into the inner barrel 73, which assists in mixing and accelerates the unloading speed of the powder in the feeding area 732.

[0052] Step 5: Feeding, the inner barrel 73 rotates to a state where the through hole 1 734 and the through hole 2 702 are staggered, at which time the inner barrel 73 is connected to the base 70, and the electric push rod 75 pushes the push plate 76 downward to transport the mixed powder in the inner barrel 73 to the feed pipe 4;

[0053] Step 6: Repeat steps 4 to 5 at a certain time period until all materials are put in;

[0054] Step 7: Heating: the heating furnace 2 heats the mixed material according to the set temperature;

[0055] Step 8: Cooling and discharging.

[0056] Specifically, after a feeding cycle is completed, the air pump 83 is started to extract the residual material in the unloading area 733, and re-transport it to the feeding area 732 to wait for processing again together with the feeding of the next cycle, which can effectively avoid the situation that the titanium dioxide powder is damp and clumped during the waiting cycle;

[0057] After the entire feeding process is completed, the air pump 83 starts to extract the residual material in the unloading area 733 and directly pumps it into the feeding pipe 4; the residual material in the feeding area 732 is pumped to the screen box 85 for screening, and qualified powder will be transported to the feeding pipe 4, and unqualified powder will be re-transported to the unloading area 733. At the same time, the electric push rod 75 forces the powder to be broken up and screened through repeated piston action. After a certain period of time, the air pump 83 pumps the remaining powder back to the screen box 85 through the feeding area 732, and analyzes it according to the quality changes before and after.

[0058] Further, after setting that all the feeding is completed, the ideal value of the residual material mass in the feeding area 732 is set as a. After passing through the sieve box 85 for sieving, the gravity sensing module connected to the sieve mesh 851 detects a stable force signal b.

[0059] Compare a with b. If b is less than or equal to a, then the feeding amount this time meets the expectation, and the amount of unmixed material that fails to pass through the sieving is within the allowable error range. The electric push rod 75 can not perform forced sieving on the residual powder, and the titanium dioxide powder and carbon powder are in good storage states. If b is greater than a, then the feeding amount this time is lower than the expectation. To ensure sufficient reaction, the electric push rod 75 needs to perform forced sieving on the residual powder, and after multiple cycles, the gravity sensing module detects another stable force signal c.

[0060] Continue to compare c with a. If c is less than or equal to a, it can be determined that the material purity is qualified, but the material is severely affected by moisture during storage, resulting in excessive agglomeration, which interferes with the feeding process. Therefore, it is necessary to check the moisture of the material storage equipment and perform additional grinding on the stored material. If c is greater than a, the material purity is unqualified and there are too many internal residual impurities. Therefore, it is necessary to replenish the material according to the shortage amount and perform re-sieving on the stored material.

[0061] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0062] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A manufacturing device for the production of titanium carbonitride powder, comprising a frame (1), a heating furnace (2), a conveying mechanism (3) and a feeding mechanism, characterized in that, The heating furnace (2) is fixed on the frame (1) and is used to heat a mixed powder of titanium dioxide and carbon powder; the conveying mechanism (3) is mounted on the frame (1) and is arranged in conjunction with the heating furnace (2) and is used to convey the mixed powder; the feeding mechanism is sleeved on the feeding mechanism (3) and is used for feeding and discharging; The feeding mechanism comprises a feed pipe (4), a discharge pipe (5) and a powder processing module, wherein the feed pipe (4) and the discharge pipe (5) are respectively arranged on both sides of the heating furnace (2) and are both connected to a branch pipe (6), and the powder processing module is arranged on the branch pipe (6) of the feed pipe (4) and is used for deeply processing the mixed powder before being put into the heating furnace (2); The powder processing module comprises a base (70), the base (70) is a hollow structure and an outer barrel (71) is fixed on the upper side, the outer barrel (71) is a hollow structure, a motor 1 (72) is fixed on the upper side of the outer barrel (71), an inner barrel (73) is rotatably arranged inside the outer barrel (71), a driving end of the motor 1 (72) is connected to the top of the inner barrel (73) and is used to drive the inner barrel (73) to rotate, and the inner barrel (73) is a hollow structure and a circle of grinding blocks (731) is arranged on the lower side; The convex surface of the grinding block (731) is close to the inner wall of the outer barrel (71) and is higher than the upper surface of the base (70) by a certain distance; the upper side of the grinding block (731) is a feeding area (732), and the lower side of the grinding block (731) is a discharging area (733); The outer barrel (71) is provided with a first feeding port (711) and a second feeding port (712) relative to the feeding area (732), which are used for feeding titanium dioxide powder and carbon powder respectively, wherein the first feeding port (711) is externally connected to a titanium dioxide powder input device (80), and the second feeding port (712) is externally connected to a carbon powder input device (81); The inner barrel (73) is provided with a circle of through holes (734) on the lower side relative to the grinding block (731); the base (70) is provided with a connecting ring (701) on the lower side relative to the inner barrel (73); the connecting ring (701) is provided with a circle of through holes (702) having the same specifications as the through holes (734); A fixing plate (74) is installed in the inner barrel (73), an electric push rod (75) is arranged on the fixing plate (74), and a push plate (76) is fixed to the driving end of the electric push rod (75); A plurality of baffles (77) are arranged at intervals at the bottom of the inner barrel (73); a sieve plate (78) is provided on the base (70) in close contact with the baffles (77); and the sieve plate (78) is provided with sieve hole areas (781) and closed areas (782) having the same number and area as the baffles (77); The overlapping state of the through hole 1 (734) and the through hole 2 (702) corresponds to the overlapping state of the blocking plate (77) and the sieve hole area (781); the staggered state of the through hole 1 (734) and the through hole 2 (702) corresponds to the overlapping state of the blocking plate (77) and the closed area (782).

2. The manufacturing equipment for titanium carbonitride powder production according to claim 1, characterized in that An input / output port 1 (713) is provided on the upper side of the outer barrel (71) relative to the grinding block (731), and an input / output port 2 (714) is provided on the lower side of the outer barrel (71) relative to the grinding block (731).

3. A manufacturing apparatus for producing titanium carbonitride powder according to claim 2, characterized in that, The input / output port 1 (713) and the input / output port 2 (714) are connected to a three-way valve 1 (82), the three-way valve 1 (82) is connected to an air pump (83), the air pump (83) is connected to a three-way valve 2 (84), one interface of the three-way valve 2 (84) is connected to a screen box (85), the other interface of the three-way valve 2 (84) is connected to the feed pipe (4), the screen box (85) is connected to the feed pipe (4), and a switch valve (86) is provided at the connection.

4. A manufacturing apparatus for producing titanium carbonitride powder according to claim 3, characterized in that, A screen (851) is arranged in the screen box (85), and the screen (851) is connected to a gravity sensing module for detecting changes in gravity of the screen (851).

5. A manufacturing process for titanium carbonitride powder production, applicable to a manufacturing apparatus for titanium carbonitride powder production as described in claim 4, characterized in that, The specific manufacturing process is as follows: Step 1: Pretreatment: titanium dioxide and carbon powder are screened, cleaned, dried, ground and stored separately; Step 2: feeding, the titanium dioxide powder input device (80) and the carbon powder input device (81) input a certain amount of material powder into the feeding area (732) according to a set ratio; Step 3: Grinding, the motor 1 (72) is started to drive the grinding block (731) to rotate, the powder in the feeding area (732) is ground by the grinding block (731), and the qualified material falls into the unloading area (733); Step 4: extracting materials. The inner barrel (73) rotates until the through hole 1 (734) and the through hole 2 (702) overlap. At this time, the inner barrel (73) and the base (70) are not connected. The electric push rod (75) pulls the push plate (76) upward. Under the action of negative pressure, the qualified powder in the discharge area (733) is pumped into the inner barrel (73), which assists in mixing the materials and accelerates the discharge speed of the powder in the feeding area (732). Step 5: feeding, the inner barrel (73) rotates to a state where the through hole 1 (734) and the through hole 2 (702) are staggered, at which time the inner barrel (73) and the base (70) are connected, and the electric push rod (75) pushes the push plate (76) downward to transport the mixed powder in the inner barrel (73) into the feed pipe (4); Step 6: Repeat steps 4 to 5 at a certain time period until all materials are put in; Step 7: Heating: the heating furnace (2) heats the mixed material according to a set temperature; Step 8: Cooling and discharging.

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