Manufacturing equipment for producing titanium carbonitride powder and manufacturing process thereof

Abstract

The invention discloses manufacturing equipment for titanium carbonitride powder production and a manufacturing process thereof, and relates to the technical field of metal ceramic powder.The manufacturing equipment comprises a rack, a heating furnace, a conveying mechanism and a material conveying mechanism, and the material conveying mechanism comprises a feeding pipe, a discharging pipe and a powder processing module; wherein the feeding pipe and the discharging pipe are arranged on the two sides of the heating furnace respectively and connected with branch pipes, and the powder processing module is arranged on the branch pipes of the feeding pipe; the powder processing module comprises a base, the base is of a hollow structure, an outer barrel is fixed to the upper side of the base, the outer barrel is of a hollow structure, a first motor is fixed to the upper side of the outer barrel, an inner barrel is rotationally arranged in the outer barrel, and the driving end of the first motor is connected with the top of the inner barrel and used for driving the inner barrel to rotate; the inner barrel is of a hollow structure, and a circle of grinding blocks are arranged on the lower side. The powder state can be checked, and the production quality is improved.

Description

Technical Field

[0001] The invention relates to the technical field of metal ceramic powders, in particular to a manufacturing device and a manufacturing process thereof for producing titanium carbonitride powder. Background Art

[0002] Titanium carbonitride powder is a non-oxide ceramic material with excellent performance. 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 cutting, high temperature resistant materials, measuring tools, petroleum and chemical industry, watch appearance and other fields.

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

[0004] The carbon thermal reduction method generally uses a tube furnace or a resistance furnace as a heating source, and in order to ensure sufficient reaction, titanium dioxide and carbon powder need to be ground and mixed in a certain proportion before adding the heating source to make the material powder more evenly distributed. In actual operation, titanium dioxide powder is hydrophilic and proportional to its surface area. Although it is ground before mixing, due to the large amount of feed, it will be locally damp and agglomerated during mixing, storage and transportation, thereby reducing the overall quality of the finished product during the final heating process. Summary of the invention

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

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a manufacturing equipment for the production of titanium carbonitride powder, comprising 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 a mixed powder of titanium dioxide and carbon powder, the conveying mechanism is mounted on the frame and is arranged in conjunction with the heating furnace and is used to convey the mixed powder, and the feeding mechanism is sleeved on the conveying mechanism and is used for feeding and discharging.

[0007] According to the above technical solution, the feeding mechanism includes a feed pipe, a discharge pipe and a powder processing module, wherein the feed pipe and the discharge pipe are respectively arranged on both sides of the heating furnace and are connected to branch pipes, and the powder processing module is arranged on the branch pipe of the feed pipe, which is used to perform deep processing on the mixed powder before being put into the heating furnace.

[0008] According to the above technical solution, the powder processing module includes a base, which is a hollow structure and an outer barrel is fixed on the upper side. The outer barrel is a hollow structure, a motor is fixed on the upper side of the outer barrel, an inner barrel is rotatably arranged inside the outer barrel, a driving end of the motor is connected to the top of the inner barrel, and is used to drive the inner barrel to rotate. The inner barrel is 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 its 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 unloading area.

[0010] According to the above technical solution, the outer barrel is provided with feeding port 1 and feeding port 2 relative to the feeding area, which are used for feeding titanium dioxide powder and carbon powder respectively, wherein feeding port 1 is externally connected to the titanium dioxide powder input device, and feeding port 2 is externally connected to the carbon powder input device.

[0011] According to the above technical solution, a circle of through holes one is opened on the lower side of the inner barrel relative to the grinding block, and a connecting ring is provided on the base relative to the lower side of the inner barrel, and a circle of through holes two with the same specifications as the through holes one is provided on the connecting ring.

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

[0013] According to the above technical solution, a number of baffles are arranged at intervals at the bottom of the inner barrel, a sieve plate is arranged on the base in close contact with the baffles, and the sieve plate is provided with sieve hole areas and closed areas with the same number and area as the baffles.

[0014] According to the above technical solution, the outer barrel is provided with an input and output port 1 on the upper side relative to the grinding block, and the outer barrel is provided with an input and output port 2 on the lower side relative to the grinding block.

[0015] According to the above technical solution, input / output port 1 and input / output port 2 are connected to three-way valve 1, three-way valve 1 is connected to an air pump, the air pump is connected to three-way valve 2, one interface of three-way valve 2 is connected to a screen box, and the other interface of three-way valve 2 is connected to a feed pipe, the screen box is connected to the feed pipe and a switch valve is provided at the connection.

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

[0017] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: the present invention, by providing a powder processing module, can grind and mix titanium dioxide and carbon powder before putting them into the heating furnace, thereby ensuring that the mixed material is in a dispersed state during the final heating, thereby improving the sufficiency of the reaction; through the air pump, screen box and other components connected to the powder processing module, the powder state and quality can be analyzed according to the residual situation of the mixed material after screening, thereby eliminating the causes of substandard material quality, thereby improving the quality and convenience of subsequent production. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] 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: Figure 1 It is a schematic diagram of the overall structure of the manufacturing equipment of the present invention; Figure 2 is a cross-sectional view of a powder processing module of the present invention; Figure 3 The present invention Figure 2 A magnified schematic diagram of area A; Figure 4 It is a schematic diagram of the structure of the connecting ring of the present invention; Figure 5 It is a schematic diagram of the structure of the baffle of the present invention; Figure 6 It is a schematic diagram of the structure of the sieve plate of the present invention; Figure 7 It is a schematic diagram of the connection structure of input / output port 1 and input / output port 2 of the present invention; Figure 8 is a cross-sectional view of the manufacturing apparatus of the present invention; In the figure: 1, frame; 2, heating furnace; 21, furnace body; 22, furnace chamber; 23, heating tube; 24, quartz tube; 25, cooling zone; 3, conveying mechanism; 31, motor 2; 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 2; 71, outer barrel; 711, feeding port 1; 712, feeding port 2; 713, input and output port 1; 714, input and output Port 2; 72. Motor 1; 73. Inner barrel; 731. Grinding block; 732. Feeding area; 733. Unloading area; 734. Through hole 1; 74. Fixed plate; 75. Electric push rod; 76. Push plate; 77. Baffle; 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 1; 83. Air pump; 84. Three-way valve 2; 85. Screen box; 851. Screen; 86. Switch valve; 9. Inert gas delivery pipe. DETAILED DESCRIPTION

[0019] 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.

[0020] See also Figure 1-8 The present invention provides a technical solution: 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, wherein 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, and the feeding mechanism is sleeved on the conveying mechanism 3 and is used for feeding and discharging; The feeding mechanism includes 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 connected with 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 includes a base 70, which is a hollow structure and has an outer barrel 71 fixed on the upper side. The outer barrel 71 is a hollow structure. A motor 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 72 is connected to the top of the inner barrel 73 to drive 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.

[0021] 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.

[0022] 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.

[0023] 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 .

[0024] 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.

[0025] 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 .

[0026] Further, such as Figures 4 to 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 .

[0027] 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 and the base 70 are not connected; when the baffle 77 corresponds to the closed area 782, the inner barrel 73 and the base 70 are connected. Preferably, when setting, the overlap state of the through hole 1 734 and the through hole 2 702 corresponds to the overlap state of the baffle 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 overlap state of the baffle 77 and the closed area 782.

[0028] In one embodiment, Figure 7 As shown, an input / output port 1 713 is disposed on the upper side of the outer barrel 71 relative to the grinding block 731 , and an input / output port 2 714 is disposed on the lower side of the outer barrel 71 relative to the grinding block 731 .

[0029] Input / output port 1 713 and input / output port 2 714 are connected to three-way valve 1 82, three-way valve 1 82 is connected to air pump 83, air pump 83 is connected to three-way valve 2 84, one interface of three-way valve 2 84 is connected to screen box 85, and the other interface of three-way valve 2 84 is connected to feed pipe 4, screen box 85 is connected to feed pipe 4 and a switch valve 86 is provided at the connection.

[0030] Furthermore, a screen 851 is provided in the screen box 85 , and the screen 851 is connected to a gravity sensing module for detecting gravity changes of the screen 851 .

[0031] like Figure 8 As shown, the heating furnace 2 includes a furnace body 21, a furnace chamber 22, a heating tube 23 and a quartz tube 24, wherein the furnace chamber 22 is fixed inside the furnace body 21, the heating tube 23 is arranged on the inner surface of the furnace chamber 22, and the quartz tube 24 is penetrated in the furnace chamber 22.

[0032] It should be noted that: a cooling zone 25 is provided in the furnace body 21 below the furnace chamber 22, for installing cooling components such as fans. The furnace chamber 22 is used for heat preservation to prevent heat loss; the heating tube 23 is used for heating; the quartz tube 24 is filled with mixed powder. The two ends of the quartz tube 24 are connected to the feed pipe 4 and the discharge pipe 5 respectively.

[0033] The conveying mechanism 3 includes a second motor 31, a gear set 32 ​​and a rotating shaft 33, wherein the rotating shaft 33 is passed through the inside of the quartz tube 24, and propeller blades 34 and stirring blades 35 are arranged at intervals on the rotating shaft 33, which are used for conveying powder and stirring powder respectively. The gear set 32 ​​connects the second motor 31 and the rotating shaft 33 respectively.

[0034] The inlet pipe 4 and the outlet pipe 5 are connected with an inert gas delivery pipe 9 for inputting or outputting the inert gas into the quartz tube 24 .

[0035] In actual operation, the motor 2 31 drives the rotating shaft 33 to rotate through the gear set 32 ​​.

[0036] 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 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. 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; 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 the set temperature; Step 8: Cooling and discharging.

[0037] 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; 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.

[0038] Furthermore, after all the materials are fed, the ideal value of the residual material mass in the feeding area 732 is set to a. After being screened by the screen box 85, the gravity sensing module connected to the screen 851 detects a stable force signal b.

[0039] Compare a with b. If b is less than or equal to a, the feeding amount this time meets expectations, and the amount of mixed materials that cannot be sieved is within the allowable error range. The electric push rod 75 does not need to force sieve the residual powder, and the titanium dioxide powder and carbon powder are well preserved. If b is greater than a, the feeding amount this time is lower than expected. In order to ensure sufficient reaction, the electric push rod 75 needs to force sieve the residual powder, and after multiple cycles, the gravity sensing module detects another stable force signal c.

[0040] Continue to compare c with a. If c is less than or equal to a, it can be judged that the material purity is qualified, but it is seriously affected by moisture during the storage process, resulting in too much clumping, 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 materials. If c is greater than a, the material purity is unqualified and there are too many residual impurities inside. Therefore, it is necessary to replenish the material according to the amount of material shortage and screen the stored materials again.

[0041] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0042] Finally, it should be noted that the above description 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 manufacturing device for producing 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 to perform deep processing on 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.

2. A manufacturing device for producing titanium carbonitride powder according to claim 1, characterized in 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 a feeding area (732), and the lower side of the grinding block (731) is a unloading area (733).

3. A manufacturing device for producing titanium carbonitride powder according to claim 2, characterized in that: 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).

4. A manufacturing equipment for producing titanium carbonitride powder according to claim 3, characterized in that: 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); and the connecting ring (701) is provided with a circle of through holes (702) having the same specifications as the through holes (734).

5. The manufacturing equipment for producing titanium carbonitride powder according to claim 4, characterized in that: 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).

6. The manufacturing equipment for producing titanium carbonitride powder according to claim 5, characterized in that: A plurality of baffles (77) are arranged at intervals at the bottom of the inner barrel (73); a sieve plate (78) is arranged 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).

7. A manufacturing device for producing titanium carbonitride powder according to claim 6, 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).

8. The manufacturing equipment for producing titanium carbonitride powder according to claim 7, 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 in communication with 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.

9. The manufacturing equipment for producing titanium carbonitride powder according to claim 8, 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).

10. A manufacturing process for producing titanium carbonitride powder, applicable to the manufacturing equipment for producing titanium carbonitride powder according to claim 9, 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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