A gas-phase reactor for the production of high-density boron carbide and its reaction process

Abstract

The present invention discloses a gas-phase reactor for the production of high-packing-density boron carbide and its reaction process, belonging to the field of reactors. A gas-phase reactor for the production of high-packing-density boron carbide and its reaction process can divide the interior of the reaction tank into five reaction chambers through four interception mechanisms, enabling the boron carbide powder raw material to first contact and react with the reaction gas inside the top chamber, and then gradually move downward through the gap where the first strip-shaped through groove and the second strip-shaped through groove coincide while being blown and reacted, blowing the boron carbide powder raw material with a higher density inside the top chamber downward step by step, reducing the density of the boron carbide powder raw material in the following chambers at all levels, so that the boron carbide powder raw material can fully contact and react with the reaction gas, improving the thoroughness of the reaction process, and being beneficial to improving the production efficiency of boron carbide.

Description

Technical Field

[0001] The present invention relates to the field of reactors, and more specifically, to a gas-phase reactor for the production of high-packing-density boron carbide and its reaction process. Background Art

[0002] As an important engineering material, boron carbide has excellent properties such as high hardness, high melting point, and low density, and is widely used in the fields of national defense, aerospace, and machining. With the continuous progress of technology and the increasing demand for high-performance materials in various industries, it has become particularly important to develop a production equipment for high-packing-density boron carbide and its reaction process.

[0003] Currently, the internal structure of the gas-phase reactors applied to the production reaction of high-packing-density boron carbide is relatively simple, mostly a single integral chamber structure. The boron carbide powder raw materials blown away by the gas flow can only contact and react with the reaction gas inside one chamber. When the loading amount of the boron carbide powder raw materials is large, it is difficult to fully contact with the reaction gas, affecting the production efficiency of boron carbide. Therefore, we propose a gas-phase reactor for the production of high-packing-density boron carbide and its reaction process to solve the above existing problems. Summary of the Invention

[0004] 1. Technical Problems to be Solved

[0005] Aiming at the problems existing in the prior art, the purpose of the present invention is to provide a gas-phase reactor for the production of high-packing-density boron carbide and its reaction process. It can divide the inside of the reaction tank into 5 reaction chambers through 4 interception mechanisms, so that the boron carbide powder raw materials can first contact and react with the reaction gas inside the top chamber, and then move down step by step through the gap where the first strip-shaped through groove and the second strip-shaped through groove are fitted and overlapped while being blown and reacted, blowing the boron carbide powder raw materials with higher density inside the top chamber down step by step, reducing the density of the boron carbide powder raw materials in the following chambers at all levels, so that the boron carbide powder raw materials can fully contact and react with the reaction gas, improving the thoroughness of the reaction process, and being beneficial to improving the production efficiency of boron carbide.

[0006] 2. Technical Solutions

[0007] To solve the above problems, the present invention adopts the following technical solutions.

[0008] A gas-phase reactor for the production of high-packed boron carbide includes a reaction tank body. Inside the reaction tank body, there are 4 intercepting mechanisms with the same structure. The intercepting mechanism includes a material-containing concave shell fixedly installed on the inner wall of the reaction tank body by screws. A rotary adjustment frame is rotatably connected to the top edge of the material-containing concave shell, and a pressing ring is rotatably connected to the top edge of the rotary adjustment frame. The pressing ring is fixedly installed on the inner wall of the reaction tank body by screws. A driving motor is fixedly installed on the outer wall of the reaction tank body at the top of the pressing ring, and a steering device is fixedly installed on the inner wall of the reaction tank body at the position corresponding to the driving motor. A gear is fixedly installed at the end of the output shaft at the bottom of the steering device. An internal tooth ring part is provided on the inner wall of the rotary adjustment frame. The outer edge teeth of the gear mesh with the inner edge teeth of the internal tooth ring part. The end of the driving shaft on one side of the driving motor penetrates into the interior of the reaction tank body, and the end of the driving shaft on one side of the driving motor is connected to the input shaft of the steering device through a coupling. A group of strip-shaped through slots one are provided on the top edge of the material-containing concave shell, and a group of strip-shaped through slots two are provided on the top edge of the rotary adjustment frame corresponding to the group of strip-shaped through slots one.

[0009] On the material-containing concave shells of the three intercepting mechanisms at the topmost part, guide material concave shells are provided at the bottoms. A guide material pipe part is fixedly connected to the guide material concave shell. The outer edge of the top of the guide material concave shell is fixedly installed on the inner wall of the reaction tank body by bolts.

[0010] Furthermore, rotary edges are fixedly connected to both the top and bottom of the outer edge of the rotary adjustment frame. Rotary grooves are provided on the bottom of the pressing ring and the top edge of the material-containing concave shell at the positions corresponding to the two rotary edges. The rotary adjustment frame is rotatably connected between the pressing ring and the material-containing concave shell through the two rotary edges, and the pressing ring, the rotary adjustment frame, and the material-containing concave shell are closely attached to each other.

[0011] Furthermore, an air inlet opening one and a discharge opening are respectively provided at the top and bottom of the reaction tank body. An inlet pipe one is fixedly installed on the air inlet opening one, and a storage bucket one is fixedly installed at the bottom of the discharge opening through a discharge valve one.

[0012] Furthermore, air inlet openings two are provided on the outer wall of the reaction tank body at the positions corresponding to the intercepting mechanisms, and the 4 air inlet openings two are connected to each other through an inlet pipe two. Flow control valves are fixedly installed on the inlet pipe two near the air inlet openings two.

[0013] Furthermore, an exhaust opening is provided on one side at the bottom of the outer wall of the reaction tank body. A cyclone separator is provided on one side of the reaction tank body. The exhaust opening is connected to the air inlet end of the cyclone separator through an exhaust pipe. A storage bucket two is fixedly installed at the bottom of the cyclone separator through a discharge valve two.

[0014] Furthermore, an electric heating coil and a temperature sensor are fixedly installed on the inner wall of the reaction tank corresponding to the position of the intercepting mechanism. A feeding opening is provided on the outer wall of the reaction tank corresponding to the position of the material-containing concave shell, and a sealing plate is fixedly installed on the feeding opening through bolts.

[0015] A gas-phase reaction process for the production of high tap density boron carbide includes the following steps: Step 1, prepare raw materials. Select specific purity boron-containing compounds and carbon-containing compounds as reaction raw materials. Among them, the boron-containing compound selects boron trioxide with a purity of 70%, and the carbon-containing compound selects methane gas with a purity of 80%.

[0016] Step 2, put the boron trioxide of the reaction raw materials into the inner part of the topmost material-containing concave shell through the feeding opening at the top of the reaction tank body, and then transport the methane gas of the reaction raw materials to the inside of the reaction tank body through the second inlet pipe. Control the flow control valves at the positions of the four second air inlets, so that the methane gas is discharged in a flow ratio of 4:2:1:0 from top to bottom in the reaction tank body through the second inlet pipe.

[0017] Step 3, select an inert gas and a reactive gas as the mixed atmosphere. Among them, the inert gas selects argon, and its volume ratio in the mixed atmosphere is 70%-85%. The reactive gas is carbon monoxide, and its volume ratio in the mixed atmosphere is 15% to 30%. Transport the mixed atmosphere to the inside of the reaction tank body through the first inlet pipe.

[0018] Step 4, in the reaction tank body, control the reaction temperature and the mixed atmosphere conditions to make the reaction raw materials carry out a gas-phase reaction to generate boron carbide products.

[0019] Step 5, during the reaction process, accurately monitor and adjust the reaction parameters to ensure the stability of the reaction and the high quality of the products.

[0020] Step 6, after the reaction is completed, collect and cool the products, and remove impurities through a specific purification process to obtain high tap density boron carbide products.

[0021] Furthermore, the reaction temperature in Step 4 should be controlled within the range of 1800°C - 2200°C.

[0022] Furthermore, the purification process in Step 6 includes first washing the initially obtained boron carbide particles with an appropriate acid solution. For example, dilute hydrochloric acid or dilute sulfuric acid and other acid solutions can be used to remove metal oxides and other impurities on the particle surface. Then, after acid washing, an alkali washing treatment is carried out. The alkali solution can neutralize the residual acid and further remove organic substances and other impurities on the particle surface. Commonly used alkali solutions include sodium hydroxide solution or potassium hydroxide solution.

[0023] 3. Beneficial effects

[0024] Compared with the prior art, the advantages of the present invention are as follows:

[0025] In this solution, the internal part of the reaction tank body can be divided into five reaction chambers by four intercepting mechanisms, so that the boron carbide powder raw material can first contact and react with the reaction gas inside the top chamber, and then move down step by step through the gap where the first strip-shaped through groove and the second strip-shaped through groove are fitted and overlapped while being blown and reacted, blowing the boron carbide powder raw material with a higher density inside the top chamber down step by step, reducing the density of the boron carbide powder raw material in the following chambers at all levels, so that the boron carbide powder raw material can fully contact and react with the reaction gas, improving the thoroughness of the reaction process, and being beneficial to improving the production efficiency of boron carbide. Brief description of the drawings

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 It is a schematic diagram of the internal sectional structure of the reaction tank body of the present invention;

[0028] Figure 3 It is for the Figure 2 schematic diagram of the enlarged structure of the local area in the present invention;

[0029] Figure 4 It is a schematic diagram of the structure of the intercepting mechanism of the present invention;

[0030] Figure 5 It is a schematic diagram of the structure of the rotary adjustment frame of the present invention Figure 1 ;

[0031] Figure 6 It is a schematic diagram of the structure of the rotary adjustment frame of the present invention Figure 2 .

[0032] Explanation of the reference numerals in the drawings:

[0033] 1. Reaction tank body; 101. First air inlet opening; 102. Discharge opening; 103. Second air inlet opening; 104. Exhaust opening; 105. Feeding opening;

[0034] 2. Intercepting mechanism; 3. Material-containing concave shell; 301. First strip-shaped through groove; 4. Rotary adjustment frame; 401. Inner gear ring part; 402. Second strip-shaped through groove; 5. Pressure ring; 6. Driving motor; 7. Steering gear; 8. Material-guiding concave shell; 801. Material-guiding pipe part; 16. Gear;

[0035] 9. First inlet pipe; 10. First storage bucket; 11. Second inlet pipe; 12. Cyclone separator; 13. Exhaust pipe; 14. Second storage bucket; 15. Electric heating coil. Detailed implementation manners

[0036] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings 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.

[0037] Embodiment 1:

[0038] Please refer to Figures 1 - 6 , a gas-phase reactor for the production of high-density boron carbide, comprising a reaction tank body 1. Inside the reaction tank body 1, there are 4 retention mechanisms 2 with the same structure. The retention mechanism 2 includes a material-containing concave shell 3 fixedly installed on the inner wall of the reaction tank body 1 by screws. A rotary adjustment frame 4 is rotatably connected to the top edge of the material-containing concave shell 3, and a pressing ring 5 is rotatably connected to the top edge of the rotary adjustment frame 4. The pressing ring 5 is fixedly installed on the inner wall of the reaction tank body 1 by screws. A driving motor 6 is fixedly installed on the outer wall of the reaction tank body 1 at the top of the pressing ring 5, and a steering device 7 is fixedly installed on the inner wall of the reaction tank body 1 at the position corresponding to the driving motor 6. A gear 16 is fixedly installed at the end of the output shaft at the bottom of the steering device 7. An internal tooth ring portion 401 is provided on the inner wall of the rotary adjustment frame 4. The outer edge teeth of the gear 16 are meshed with the inner edge teeth of the internal tooth ring portion 401. The end of the driving shaft on one side of the driving motor 6 penetrates into the reaction tank body 1, and the end of the driving shaft on one side of the driving motor 6 is connected to the input shaft of the steering device 7 through a coupling. A group of strip-shaped through slots 301 are provided on the top edge of the material-containing concave shell 3, and a group of strip-shaped through slots 402 are provided on the top edge of the rotary adjustment frame 4 corresponding to the group of strip-shaped through slots 301;

[0039] The bottom of the material-containing concave shell 3 of the three retention mechanisms 2 at the topmost are all provided with a material guiding concave shell 8. A material guiding pipe portion 801 is fixedly connected to the material guiding concave shell 8. The outer edge of the top of the material guiding concave shell 8 is fixedly installed on the inner wall of the reaction tank body 1 by bolts;

[0040] An air inlet opening 101 and a discharge opening 102 are respectively arranged at the top and bottom of the reaction tank body 1. An inlet pipe 9 is fixedly installed on the air inlet opening 101. A storage bucket 10 is fixedly installed at the bottom of the discharge opening 102 through a first discharge valve. Air inlet openings 103 are formed on the outer wall of the reaction tank body 1 corresponding to the positions of the 4 intercepting mechanisms 2, and the 4 air inlet openings 103 are connected through an inlet pipe 11. Flow control valves are fixedly installed on the inlet pipe 11 near the air inlet openings 103. An exhaust opening 104 is formed on one side of the bottom of the outer wall of the reaction tank body 1. A cyclone separator 12 is arranged on one side of the reaction tank body 1. The exhaust opening 104 is connected to the air inlet end of the cyclone separator 12 through an exhaust pipe 13. A storage bucket 14 is fixedly installed at the bottom of the cyclone separator 12 through a second discharge valve.

[0041] The working principle of this gas-phase reactor for the production of high-bulk-density boron carbide is as follows:

[0042] First, the boron carbide powder raw material (boron trioxide) is put into the inner part of the topmost material-containing concave shell 3 through the topmost feeding opening 105. Then, the feeding opening 105 is sealed with a sealing plate. Then, a mixed gas of argon and carbon monoxide is slowly introduced through the inlet pipe 9, so that the air remaining inside the reaction tank body 1 can be emptied. Then, each electric heating coil 15 is started to heat up the inside of the reaction tank body 1. When the temperature reaches the required value, a reaction gas (methane gas) is introduced through the inlet pipe 11, and at the same time, each flow control valve is adjusted so that the introduced amount of the reaction gas decreases layer by layer. Then, the air intake of the mixed gas of argon and carbon monoxide is increased at the same time. At this time, the boron carbide powder raw material at the topmost part can be blown into a boiling state and continuously contact and react with the reaction gas. At the same time, a part of the boron carbide powder raw material enters the corresponding material-guiding concave shell 8 through the overlapping gap between a group of strip-shaped through grooves 301 and a group of strip-shaped through grooves 402 of the topmost intercepting mechanism 2, and then moves downward through the material-guiding pipe part 801 to the material-containing concave shell 3 of the next intercepting mechanism 2, and so on. While continuously moving downward for reaction, high-bulk-density boron carbide products are formed and finally fall to the bottom of the reaction tank body 1. Then, after the reaction is completed, the first discharge valve is opened to release the products into the storage bucket 10 inside;

[0043] During the reaction process, the tail gas at the bottom of the reaction tank body 1 enters the cyclone separator 12 through the exhaust pipe 13 and is separated. The high-bulk-density boron carbide products with smaller particle sizes are deposited at the bottom of the cyclone separator 12, which is convenient for later collection through the storage bucket 14. The separated tail gas is discharged through the air outlet at the top of the cyclone separator 12 (it should be noted that a tail gas treatment device should be installed at the air outlet at the top of the cyclone separator 12 to prevent harm to the surrounding environment). At this time, the production process of high-bulk-density boron carbide can be completed.

[0044] Example 2:

[0045] In view of the above-mentioned Embodiment 1, a further description is provided. Refer to Figures 2 - 5 , rotation edges are fixedly connected to the top and bottom of the outer edge of the rotation adjustment frame 4. Rotation grooves are formed on the bottom of the pressure ring 5 and the top edge of the material-containing concave shell 3 corresponding to the positions of the two rotation edges. The rotation adjustment frame 4 is rotationally connected between the pressure ring 5 and the material-containing concave shell 3 through the two rotation edges, and the pressure ring 5, the rotation adjustment frame 4 and the material-containing concave shell 3 are closely attached to each other. An electric heating coil 15 and a temperature sensor are fixedly installed on the inner wall of the reaction tank body 1 corresponding to the position of the intercepting mechanism 2. A feeding opening 105 is formed on the outer wall of the reaction tank body 1 corresponding to the position of the material-containing concave shell 3, and a sealing plate is fixedly installed on the feeding opening 105 through bolts.

[0046] Since the rotation adjustment frame 4 is rotationally connected between the pressure ring 5 and the material-containing concave shell 3 through the two rotation edges, the rotation adjustment frame 4 can rotate normally while not interfering with the sealing performance of the close fit between the pressure ring 5, the rotation adjustment frame 4 and the material-containing concave shell 3. The driving motor 6 can drive the corresponding gear 16 to rotate through the connection of the steering gear 7, and then drive the rotation of the corresponding rotation adjustment frame 4, so as to adjust the opening gap where a group of strip-shaped through grooves one 301 and a group of strip-shaped through grooves two 402 coincide, thereby controlling the passing amounts of boron carbide powder raw materials (boron trioxide) and corresponding gases, achieving the effect of gradually reducing the high-density boron carbide powder raw materials, and improving the contact rate with the reaction gas.

[0047] Embodiment 3:

[0048] In view of the above-mentioned Embodiment 1 and Embodiment 2, a further description is provided. A gas-phase reaction process for the production of high-bulk-density boron carbide includes the following steps:

[0049] Step 1, preparing raw materials. Specific purity boron-containing compounds and carbon-containing compounds are selected as reaction raw materials. Among them, the boron-containing compound selects boron trioxide with a purity of 70%, and the carbon-containing compound selects methane gas with a purity of 80%.

[0050] Step 2, putting the boron trioxide of the reaction raw materials into the innermost material-containing concave shell through the feeding opening at the top of the reaction tank body, and then conveying the methane gas of the reaction raw materials to the inside of the reaction tank body through the second inlet pipe. Control the flow control valves at the positions of the 4 second inlet openings, so that the methane gas is discharged in a flow ratio of 4:2:1:0 from top to bottom in the reaction tank body through the second inlet pipe.

[0051] Step 3: Select an inert gas and a reactive gas as the mixed atmosphere. The inert gas is argon, and its volume percentage in the mixed atmosphere is 70%-85%. The reactive gas is carbon monoxide, and its volume percentage in the mixed atmosphere is 15% to 30%. Deliver the mixed atmosphere to the inside of the reaction tank through the first inlet pipe;

[0052] Step 4: In the reaction tank, control the reaction temperature and the mixed atmosphere conditions to cause the reaction raw materials to undergo a gas-phase reaction to produce a boron carbide product. The reaction temperature should be controlled within the range of 1800°C - 2200°C;

[0053] Step 5: During the reaction process, accurately monitor and adjust the reaction parameters to ensure the stability of the reaction and the high quality of the product;

[0054] Step 6: After the reaction is completed, collect and cool the product, and remove impurities through a specific purification process to obtain a high tap density boron carbide product. The purification process includes first washing the preliminarily obtained boron carbide particles with an appropriate acid solution. For example, dilute hydrochloric acid or dilute sulfuric acid and other acid solutions can be used to remove metal oxides and other impurities on the particle surface. Then, after acid washing, an alkali washing treatment is carried out. The alkali solution can neutralize the remaining acid and further remove organic substances and other impurities on the particle surface. Commonly used alkali solutions include sodium hydroxide solution or potassium hydroxide solution.

[0055] The above is only a preferred specific embodiment of the present invention; however, the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its improved concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A gas phase reactor for producing high-density boron carbide, comprising a reaction tank (1), characterized in that: The reaction tank body (1) is provided with four interception mechanisms (2) of the same structure inside. The interception mechanisms (2) include a material containing concave shell (3) fixedly mounted on the inner wall of the reaction tank body (1) by means of screws. A rotation adjustment frame (4) is rotatably connected to the top edge of the material containing concave shell (3). A pressure ring (5) is rotatably connected to the top edge of the rotation adjustment frame (4). The pressure ring (5) is fixedly mounted on the inner wall of the reaction tank body (1) by means of screws. A driving motor (6) is fixedly mounted on the outer wall of the reaction tank body (1) at the top of the pressure ring (5). A steering gear (7) is fixedly mounted on the inner wall of the reaction tank body (1) at the position of the driving motor (6). A gear (16) is fixedly mounted on the end of the output shaft at the bottom of the diverter (7); an inner toothed ring portion (401) is provided on the inner wall of the rotation adjustment frame (4); the outer edge teeth of the gear (16) mesh with the inner edge teeth of the inner toothed ring portion (401); the end of the drive shaft on one side of the drive motor (6) penetrates into the interior of the reaction tank body (1); and the end of the drive shaft on one side of the drive motor (6) is connected to the input shaft of the diverter (7) through a coupling; a group of strip-shaped through grooves (1) (301) are provided on the top edge of the material containing concave shell (3); and a group of strip-shaped through grooves (2) (402) are provided on the top edge of the rotation adjustment frame (4) at the positions of the group of strip-shaped through grooves (301); The bottom of the material containing concave shells (3) on the three interception mechanisms (2) at the top are all provided with material guiding concave shells (8), a material guiding pipe portion (801) is fixedly connected to the material guiding concave shells (8), and the top outer edge of the material guiding concave shells (8) is fixedly mounted on the inner wall of the reaction tank body (1) by bolts; The top and bottom of the reaction tank body (1) are respectively provided with an air inlet opening (101) and a discharge opening (102); an air inlet pipe (9) is fixedly mounted on the air inlet opening (101); and a material storage barrel (10) is fixedly mounted on the bottom of the discharge opening (102) via a discharge valve (1). Two air inlet openings (103) are provided on the outer wall of the reaction tank body (1) at the positions of the four interception mechanisms (2), and the four air inlet openings (103) are connected via two air inlet pipes (11), and a flow control valve is fixedly installed on the two air inlet pipes (11) near the positions of the two air inlet openings (103).

2. A gas phase reactor for producing high density boron carbide according to claim 1, characterized in that: The top and bottom of the outer edge of the rotation adjustment frame (4) are fixedly connected with rotation edges, and the bottom of the pressure ring (5) and the top edge of the material containing concave shell (3) are provided with rotation grooves at the positions corresponding to the two rotation edges. The rotation adjustment frame (4) is rotationally connected between the pressure ring (5) and the material containing concave shell (3) through the two rotation edges, and the pressure ring (5), the rotation adjustment frame (4) and the material containing concave shell (3) are tightly fitted.

3. A gas phase reactor for producing high density boron carbide according to claim 1, characterized in that: An exhaust opening (104) is provided on one side of the bottom of the outer wall of the reaction tank body (1), and a cyclone separator (12) is provided on one side of the reaction tank body (1). The exhaust opening (104) is connected to an air inlet end of the cyclone separator (12) via an exhaust pipe (13), and a second material storage barrel (14) is fixedly mounted on the bottom of the cyclone separator (12) via a second discharge valve.

4. A gas phase reactor for producing high density boron carbide according to claim 1, characterized in that: An electric heating coil (15) and a temperature sensor are fixedly mounted on the inner wall of the reaction tank body (1) at the position of the interception mechanism (2), and a feeding opening (105) is provided on the outer wall of the reaction tank body (1) at the position of the material containing concave shell (3), and a sealing plate is fixedly mounted on the feeding opening (105) by means of bolts.

5. A gas phase reaction process for producing high-density boron carbide, comprising a gas phase reactor for producing high-density boron carbide according to claim 1, characterized in that: The following steps are involved: Step 1: prepare raw materials, select boron-containing compounds and carbon-containing compounds of specific purity as reaction raw materials, wherein the boron-containing compound is boron trioxide with a purity of 70%, and the carbon-containing compound is methane gas with a purity of 80%; Step 2: boron trioxide as a reaction raw material is fed into the topmost concave shell of the material storage through the feeding opening at the top of the reaction tank body, and then the methane gas as a reaction raw material is transported to the inside of the reaction tank body through the second air inlet pipe, and the flow control valves at the second positions of the four air inlet openings are controlled so that the methane gas is discharged from the top to the bottom of the reaction tank body through the second air inlet pipe in the order of 4:2:1:0; Step 3: Select an inert gas and a reactive gas as a mixed atmosphere, wherein the inert gas is argon, and its volume proportion in the mixed atmosphere is 70% to 85%, and the reactive gas is carbon monoxide, and its volume proportion in the mixed atmosphere is 15% to 30%, and the mixed atmosphere is delivered to the interior of the reaction tank through an air inlet pipe 1; Step 4: In the reaction tank, the reaction temperature and the mixed atmosphere conditions are controlled to allow the reaction raw materials to undergo a gas phase reaction to generate a boron carbide product; Step 5: During the reaction process, accurately monitor and adjust the reaction parameters to ensure the stability of the reaction and the high quality of the product; Step 6: After the reaction is completed, the product is collected and cooled, and impurities are removed through a specific purification process to obtain a high-density boron carbide product.

6. The gas phase reaction process for producing high density boron carbide according to claim 5, characterized in that: The reaction temperature in step 4 should be controlled within the range of 1800°C-2200°C.

7. The gas phase reaction process for producing high density boron carbide according to claim 5, characterized in that: The purification process in step six includes first washing the initially obtained boron carbide particles with an appropriate acid solution, using dilute hydrochloric acid or dilute sulfuric acid solution to remove metal oxides and other impurities on the particle surface, and then performing alkaline washing after acid washing. The alkaline solution can neutralize the residual acid and further remove organic matter and other impurities on the particle surface. The alkaline solution is a sodium hydroxide solution or a potassium hydroxide solution.

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