Automatic combustion device for aluminothermic reduction method

Abstract

The invention relates to the technical field of chemical engineering, and discloses an automatic combustion device for an aluminothermic reduction method, which comprises a support frame body, the inner side of the support frame body is fixedly connected with a pit furnace, the top of the pit furnace is provided with a driving motor, and the output end of the driving motor is fixedly connected with a driving screw rod; a limiting frame is fixedly connected to the inner top wall of the pit furnace, a threaded block is in threaded connection with the exterior of a driving screw rod, first swing rods are hinged to the periphery of the exterior of the threaded block, a plurality of second swing rods are rotationally connected to the inner side of the pit furnace, and limiting grooves are formed in the outer surfaces of the second swing rods; a sliding block is slidably connected into the limiting groove, and an igniter is installed at the tail end of the sliding block. Through cooperative work of a plurality of igniters, reaction can be started at the same time in different reaction areas, uniform distribution of reaction heat is ensured, the risk of local overheating is reduced, and the efficiency and stability of reduction reaction are remarkably improved.

Description

Technical Field

[0001] The invention relates to the technical field of chemical engineering, in particular to an automatic combustion device for an aluminothermic reduction method. Background Art

[0002] The aluminothermic reduction method is a high-temperature reduction reaction process that generates aluminum metal and oxide by reacting aluminum powder with alumina. It is widely used in the metallurgical industry. The method is carried out under high temperature conditions and relies on the heat generated by the combustion reaction to reach the required reaction temperature. Most of the existing aluminothermic reduction devices use a traditional single fire source or a small number of igniters for ignition and heating, and heat the reactants through external energy such as gas or electricity. However, this method often faces the risk of uneven heat distribution and local overheating, resulting in low reaction efficiency and even affecting the stability of the reaction. In some cases, overheated areas can also cause premature melting of materials or incomplete reactions, while low-temperature areas can lead to reduced reaction rates, incomplete reactions, and affect the quality of the final product. In addition, existing ignition devices are usually fixed and cannot be flexibly adjusted according to different materials or reaction conditions, resulting in poor adaptability and difficulty in operation.

[0003] At the same time, in terms of oxygen supply, traditional aluminothermic reduction devices mostly rely on air or imprecise oxygen delivery systems. This uneven or excessive oxygen supply often leads to incomplete combustion, and even causes local overheating or low-temperature areas, which in turn affects the stability and efficiency of the reaction. The inaccurate oxygen supply may also lead to inconsistent reaction rates of alumina and aluminum powder, which in turn affects the final reaction effect and the yield of aluminum metal. To this end, those skilled in the art have proposed an automatic combustion device for aluminothermic reduction to solve the above problems. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides an automatic combustion device for an aluminum thermal reduction method, which solves the problems raised in the above-mentioned background technology.

[0005] To achieve the above objectives, the present invention is implemented through the following technical scheme: an automatic combustion device for aluminum thermal reduction method, comprising a supporting frame, a pit-type furnace is fixedly connected to the inner side of the supporting frame, a driving motor is installed on the top of the pit-type furnace, a driving screw is fixedly connected to the output end of the driving motor, a limiting frame is fixedly connected to the inner top wall of the pit-type furnace, a threaded block is connected to the external thread of the driving screw, a swing rod 1 is hinged on the outer periphery of the threaded block, a plurality of swing rods 2 are rotatably connected to the inner side of the pit-type furnace, a limiting groove is provided on the outer surface of the swing rod 2, a slider is slidably connected to the inner side of the limiting groove, an igniter is installed at the end of the slider, the driving screw is driven to rotate by the driving motor, the threaded block moves up and down along the outer wall of the driving screw, and changes the positions of multiple igniters under the action of the traction force of the swing rod 1.

[0006] Preferably, a quantitative box is fixedly connected to one side of the top end of the support frame, a driving turntable is installed inside the quantitative box, a driving block is fixedly connected to the outer eccentric part of the driving turntable, a movable frame is slidably connected to the outer surface of the driving turntable, a movable groove is provided inside the movable frame, a connecting rod is fixedly connected to the outer side of the movable frame, a rubber piston is fixedly connected to one side of the connecting rod, an oxygen volume flow meter is installed on the inner side of the quantitative box, a connecting pipe is connected to the outer side of the quantitative box, and a motor for driving the turntable to rotate is installed on the outer side of the quantitative box.

[0007] Preferably, one side of the top of the quantitative box is connected to an air inlet pipe, and a one-way valve is installed inside the air inlet pipe, and the other end of the connecting pipe is connected to the inner side of the pit furnace.

[0008] Preferably, the inner wall of the quantitative box is provided with slide grooves on both upper and lower sides, the upper and lower ends of the movable frame are slidably connected to the inner wall of the slide groove, and the outer surface of the rubber piston is slidably connected to the inner wall of the quantitative box.

[0009] Preferably, one end of the swing rod is rotatably connected to the outer side of the slider, and one end of the drive screw away from the drive motor passes through the bottom of the limit frame and is fixedly connected to a rotating plate.

[0010] Preferably, feed pipe 1 and feed pipe 2 are sequentially installed on the outside of the pit-type furnace, feed pipe 1 is used to transport aluminum powder and magnesium powder into the interior of the pit-type furnace, and feed pipe 2 is used to transport iron oxide into the interior of the pit-type furnace.

[0011] Preferably, an oxygen generator is installed on the inner side of the support frame, and the oxygen generator is used to generate oxygen.

[0012] An ignition control system for aluminothermic reduction method, comprising the following modules: The ignition control module is responsible for starting or stopping the ignition source according to predetermined conditions: Temperature monitoring and feedback module, used to monitor the temperature of the reaction area in real time to ensure the safety and effectiveness of the ignition operation; Safety monitoring and protection module, used to ensure safety during the ignition process and to monitor and respond to potential risks in real time; Fault diagnosis and alarm module, used to detect whether each part of the ignition system is working properly and can alarm when a fault occurs; The data acquisition and recording module is used to collect and record data related to the ignition control system in real time.

[0013] Preferably, the security monitoring and protection module specifically includes: Gas leak detection unit, used to detect the leakage of combustible gas; Temperature monitoring and protection unit, used to monitor the temperature of the combustion area, furnace body, reactants, etc. in real time; Over-temperature protection unit: when the temperature exceeds the set safety threshold, the system automatically starts protection measures; Pressure monitoring and protection unit, used to monitor the internal pressure of the equipment in real time to prevent safety accidents caused by excessive pressure; The electrical protection and overload protection unit detects the electrical parameters of the equipment through current sensors and voltage sensors to ensure the normal operation of the electrical system.

[0014] The present invention provides an automatic combustion device for aluminothermic reduction method. It has the following beneficial effects: 1. The present invention can start the reaction in different reaction areas at the same time through the coordinated work of multiple igniters, ensuring the uniform distribution of reaction heat, reducing the risk of local overheating, and significantly improving the efficiency and stability of the reduction reaction. In addition, the adjustability of the igniter position enables the device to flexibly adjust the layout of the fire source according to the characteristics and reaction requirements of different materials to adapt to different scales and types of aluminum thermal reduction reactions, thereby improving the adaptability and operational flexibility of the device, reducing the difficulty of operation, and ensuring the efficiency, safety and controllability of the production process.

[0015] 2. The present invention can quantitatively deliver oxygen to the interior of the pit furnace and precisely control the supply of oxygen to make the reaction between oxygen and aluminum powder and alumina more complete and uniform, thereby effectively improving the rate of the reduction reaction and the quality of the product. Quantitative delivery of oxygen can not only improve the combustion efficiency, but also optimize the temperature distribution, avoid local overheating or low temperature problems caused by excessive or insufficient oxygen, improve the stability of the reaction temperature in the furnace, and ensure the efficient and stable operation of the entire process.

[0016] 3. The present invention covers multiple subsystems such as gas leakage detection, temperature protection, over-temperature protection, and pressure monitoring through the ignition control system, which can effectively prevent safety hazards such as combustible gas leakage, excessive temperature and abnormal pressure, and realize automatic early warning and protection, thereby greatly improving the safety assurance capability of the production process. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A perspective view of the present invention; Figure 2 It is a schematic structural diagram of the oxygen generator of the present invention; Figure 3 It is a cross-sectional view of a pit furnace of the present invention; Figure 4 for Figure 3 The enlarged view of point A in the middle; Figure 5 It is a schematic diagram of the limit frame structure of the present invention; Figure 6 It is a cross-sectional view of a quantitative box of the present invention; Figure 7 It is a flow chart of the ignition control system of the present invention; Figure 8 It is a flow chart of the security monitoring and protection module of the present invention.

[0018] Among them, 1. support frame; 2. pit furnace; 3. oxygen generator; 401. drive motor; 402. limit frame; 403. swing rod one; 404. swing rod two; 405. limit groove; 406. slider; 407. igniter; 408. threaded block; 409. drive screw; 501. quantitative box; 502. connecting pipe; 503. oxygen volume flow meter; 504. rubber piston; 505. drive turntable; 506. connecting rod; 507. movable groove; 508. drive block; 6. air inlet pipe; 7. feed pipe one; 8. feed pipe two; 9. slide groove; 10. rotating plate. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the specification 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] Please see attached Figure 1 - Attachment Figure 8The embodiment of the present invention provides an automatic combustion device for aluminum thermal reduction method, including a support frame 1, a pit furnace 2 is fixedly connected to the inner side of the support frame 1, a driving motor 401 is installed on the top of the pit furnace 2, a driving screw 409 is fixedly connected to the output end of the driving motor 401, a limiting frame 402 is fixedly connected to the inner top wall of the pit furnace 2, a thread block 408 is threadedly connected to the outer side of the driving screw 409, and a swing rod 1 403 is hingedly connected to the outer periphery of the thread block 408, a plurality of swing rods 2 404 are rotatably connected to the inner side of the pit furnace 2, a limiting groove 405 is provided on the outer surface of the swing rod 2 404, a slider 406 is slidably connected to the inner side of the limiting groove 405, an igniter 407 is installed at the end of the slider 406, the driving screw 409 is driven to rotate by the driving motor 401, the thread block 408 moves up and down along the outer wall of the driving screw 409, and changes the positions of the plurality of igniters 407 under the action of the traction force of the swing rod 1 403. One end of the swing rod 403 is rotatably connected to the outer side of the slider 406 , and one end of the driving screw 409 away from the driving motor 401 passes through the bottom of the limiting frame 402 and is fixedly connected to the rotating plate 10 .

[0021] Specifically, the support frame 1 is the frame structure of the entire device, which plays a supporting role to ensure that the device is firmly placed and operates normally. The pit furnace 2 is a key equipment in the aluminothermic reduction method, which is used for high-temperature reaction. It is fixed inside the support frame 1 and contains the materials for the aluminothermic reduction reaction.

[0022] The driving screw 409 is a component connected to the driving motor 401 and plays a role in transmitting power. The rotation of the driving motor 401 drives the driving screw 409 to rotate, thereby promoting the movement of other components. The threaded block 408 is connected to the threaded outer wall of the driving screw 409. The threaded block 408 moves up and down with the rotation of the screw, thereby driving the movement of other components connected to it. The swing rod 1 403 is connected to the threaded block 408 and is responsible for carrying and transmitting the traction from the threaded block 408. When the threaded block 408 moves along the screw, one end of the swing rod 1 403 swings, thereby triggering subsequent actions. The swing rod 2 404 cooperates with the swing rod 1 403 and plays an auxiliary role in the device. Its movement changes the position of the igniter 407 by cooperating with the slider 406. The igniter 407 is responsible for igniting the fuel during the aluminum thermal reduction reaction.

[0023] Start the drive motor 401, which rotates the drive screw 409. After the drive screw 409 rotates, it drives the threaded block 408 to move up and down along the screw. The movement of the threaded block 408 pulls the swing rod 403 to make it swing.

[0024] The swing of the swing rod 1 403 drives the slider 406 to slide along the limit groove 405, further changing the position of the swing rod 2 404. The movement of the swing rod 2 404 ultimately adjusts the position of the igniter 407, allowing it to swing and move accurately according to the requirements of the aluminum thermal reduction reaction. This dynamic adjustment process can flexibly adjust the layout of the fire source according to the characteristics and reaction requirements of different materials, thereby improving the adaptability, flexibility and ease of operation of the device.

[0025] A quantitative box 501 is fixedly connected to one side of the top of the support frame 1, a driving turntable 505 is installed inside the quantitative box 501, a driving block 508 is fixedly connected to the outer eccentric part of the driving turntable 505, a movable frame is slidably connected to the outer surface of the driving turntable 505, a movable groove 507 is provided inside the movable frame, a connecting rod 506 is fixedly connected to the outer side of the movable frame, a rubber piston 504 is fixedly connected to one side of the connecting rod 506, an oxygen volume flow meter 503 is installed inside the quantitative box 501, a connecting pipe 502 is connected to the outer side of the quantitative box 501, and a motor for driving the turntable 505 to rotate is installed outside the quantitative box 501. An air inlet pipe 6 is connected to one side of the top of the quantitative box 501, and a one-way valve is installed inside the air inlet pipe 6, and the other end of the connecting pipe 502 is connected to the inner side of the pit furnace 2.

[0026] Specifically, the oxygen volume flow meter 503 is installed inside the quantitative box 501 to detect the volume flow of oxygen. It can monitor the flow change of oxygen in the quantitative box 501 in real time and provide feedback data to the system to ensure accurate control of oxygen supply. The use of the volume flow meter can improve the accuracy of the system and avoid incomplete or uneven reactions caused by unstable flow or excessive oxygen supply.

[0027] The air inlet pipe 6 is used to transport oxygen to the inside of the quantitative box 501, and a one-way valve is installed in each air inlet pipe 6. The function of the one-way valve is to prevent oxygen from flowing back, ensuring that the oxygen in the quantitative box 501 can only flow in and cannot flow in the opposite direction. This design ensures the directionality of the oxygen supply and avoids operational problems caused by the disorder of oxygen flow.

[0028] The motor outside the quantitative box 501 is used to drive the rotation of the turntable 505. The movement speed and direction of the drive turntable 505 are accurately controlled, thereby indirectly controlling the supply of oxygen. Through the control of the motor, the system can flexibly adjust the oxygen flow rate to meet the needs of different aluminum thermal reduction reaction processes.

[0029] During the ignition process, the pit furnace 2 injects oxygen into the cavity of the quantitative box 501 through the air inlet pipe 6. The oxygen volume flowmeter 503 is used to monitor the amount of oxygen injected. When the amount of oxygen in the quantitative box 501 reaches a predetermined value, the system is ready to start controlling the delivery of oxygen. The motor outside the quantitative box 501 is started to drive the drive turntable 505 to rotate. The drive block 508 rotates eccentrically and drives the movable frame to reciprocate along the slide groove 9 under the guidance of the movable groove 507. The movement of the movable frame synchronously drives the rubber piston 504 to move through the connecting rod 506. The movement of the rubber piston 504 will transport the oxygen in the quantitative box 501 to the inside of the pit furnace 2 through the connecting pipe 502. The amount of oxygen discharged each time is fixed, which is mainly determined by the length of the connecting rod 506 and the stroke of the rubber piston 504.

[0030] The system can accurately control the supply of oxygen according to the initial position of the rubber piston 504 and the feedback of the oxygen volume flow meter 503. During operation, it is only necessary to adjust the position of the rubber piston 504 and the set value of the oxygen volume flow meter 503 to achieve accurate control of the oxygen flow.

[0031] Slide grooves 9 are provided on both upper and lower sides of the inner wall of the quantitative box 501 , and both upper and lower ends of the movable frame are slidably connected to the inner wall of the slide groove 9 , and the outer surface of the rubber piston 504 is slidably connected to the inner wall of the quantitative box 501 .

[0032] Specifically, the function of the slide groove 9 is to provide a space for the movable frame to move smoothly, and the oxygen in the cavity inside the quantitative box 501 can be transported through the movement of the rubber piston 504.

[0033] A feed pipe 1 7 and a feed pipe 2 8 are installed in sequence on the outside of the pit furnace 2. The feed pipe 1 7 is used to transport aluminum powder and magnesium powder into the interior of the pit furnace 2, and the feed pipe 2 8 is used to transport iron oxide into the interior of the pit furnace 2.

[0034] An oxygen generator 3 is installed inside the support frame 1 , and the oxygen generator 3 is used to generate oxygen.

[0035] Specifically, the oxygen generator 3 is used to separate oxygen from the air or generate oxygen through a chemical or physical process. This design ensures that the oxygen generator 3 can operate stably, and because it is installed on the inner side of the support frame 1, it can avoid interference with its function by the external environment.

[0036] An ignition control system for aluminothermic reduction method, comprising the following modules: The ignition control module is responsible for starting or stopping the ignition source according to predetermined conditions: Specifically, the module receives real-time data from the temperature monitoring and feedback module, and automatically adjusts the start and stop status of the ignition source according to the temperature changes of the reactants and the reaction requirements. In practical applications, the ignition control module can accurately control the ignition process according to the set start and stop conditions, ensure the smooth start of the reaction, and avoid excessive ignition or premature stop causing incomplete reaction or temperature fluctuations. In addition, the ignition control module also works closely with other system modules to ensure that parameters such as temperature and gas concentration in the reaction area are within a safe and reasonable range. The automated control function of this module not only improves the efficiency of the production process, but also enhances the operational flexibility and safety of the device.

[0037] Temperature monitoring and feedback module, used to monitor the temperature of the reaction area in real time to ensure the safety and effectiveness of the ignition operation; Specifically, the main function of the temperature monitoring and feedback module is to monitor the temperature in the reaction area in real time and feed the data back to the ignition control module to accurately adjust the ignition operation. The module uses multiple temperature sensors arranged in key areas of the reactor, such as the surface of the reactants, the inside of the furnace, and the combustion area, to monitor temperature changes and adjust the start and stop of the ignition source based on the temperature data.

[0038] Safety monitoring and protection module, used to ensure safety during the ignition process and to monitor and respond to potential risks in real time; The security monitoring and protection module specifically includes: Gas leak detection unit, used to detect the leakage of combustible gas; Temperature monitoring and protection unit, used to monitor the temperature of the combustion area, furnace body, reactants, etc. in real time; Over-temperature protection unit: when the temperature exceeds the set safety threshold, the system automatically starts protection measures; Pressure monitoring and protection unit, used to monitor the internal pressure of the equipment in real time to prevent safety accidents caused by excessive pressure; Specifically, the module detects the safety status of the ignition process in real time through a series of subsystems and units, issues warnings through the alarm system when an abnormality occurs, and activates the protection mechanism. The safety monitoring and protection module ensures that the ignition process can be carried out within a fully controllable safety range and prevents safety accidents caused by external or internal factors.

[0039] The electrical protection and overload protection unit detects the electrical parameters of the equipment through current sensors and voltage sensors to ensure the normal operation of the electrical system.

[0040] Fault diagnosis and alarm module, used to detect whether each part of the ignition system is working properly and can alarm when a fault occurs; The data acquisition and recording module is used to collect and record data related to the ignition control system in real time.

[0041] Specifically, it is used to collect and record the operating data of each module in the ignition control system in real time, including temperature, pressure, electrical parameters, gas concentration, etc. These data not only monitor the reaction process in real time, but also provide important basis for later production analysis and optimization. By collecting and storing data, operators can view historical data at any time, conduct trend analysis, and evaluate the stability and efficiency of the reaction.

[0042] Working principle: When the device is used, aluminum powder and magnesium powder are first fed into the pit furnace 2 through the feed pipe 1 7, and then iron oxide is fed into the pit furnace 2 through the feed pipe 2 8. At this time, the ignition control system is used to start the igniter 407, and the magnesium powder is ignited by the igniter 407, thereby promoting the generation of the aluminum thermal reduction reaction; In this process, the driving motor 401 is started to drive the driving screw 409 to rotate, and the threaded block 408 moves up and down along the outer surface of the driving screw 409. When the threaded block 408 moves, one end of the plurality of swinging rods 403 is driven to swing. At this time, the slider 406 is driven to move along the inner wall of the slider 406 under the action of the traction force of the swinging rod 403. At this time, the swinging rod 404 will swing, thereby driving the igniter 407 to swing synchronously, so that the position of the igniter 407 can be changed, so that the device can flexibly adjust the layout of the fire source according to the characteristics and reaction requirements of different materials to adapt to aluminum thermal reduction reactions of different scales and types, thereby improving the adaptability and operational flexibility of the device and reducing the difficulty of operation; In addition, during the ignition process, the pit furnace 2 delivers oxygen to the cavity inside the quantitative box 501 through the air inlet pipe 6. After the oxygen volume flowmeter 503 detects that the cavity is full of oxygen, the motor outside the quantitative box 501 is started to drive the driving turntable 505 to rotate synchronously. At this time, the driving block 508 will rotate eccentrically along the outer surface of the driving turntable 505. Since the driving block 508 moves along the inside of the movable groove 507, it will drive the movable frame to reciprocate left and right along the inside of the slide groove 9, so as to drive the rubber piston 504 to move synchronously, and the oxygen inside the cavity enters the inside of the pit furnace 2 through the connecting pipe 502. Since the length of the connecting rod 506 is fixed, the amount of oxygen discharged each time is also fixed. Later, it is only necessary to change the initial position of the rubber piston 504 and match the oxygen volume flowmeter 503 to control the amount of oxygen delivered. In this way, the supply of oxygen is precisely controlled to make the reaction of oxygen with aluminum powder and aluminum oxide more sufficient and uniform, thereby effectively improving the rate of the reduction reaction and the quality of the product.

[0043] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic combustion device for aluminothermic reduction method, characterized in that: The invention comprises a support frame (1), the inner side of which is fixedly connected to a pit furnace (2), the top of which is mounted a driving motor (401), the output end of which is fixedly connected to a driving screw (409), the inner top wall of which is fixedly connected to a limiting frame (402), the outer side of which is connected to a threaded block (408), the outer sides of which are hingedly connected to a swinging rod (403), the inner side of which is rotated to rotate A plurality of swing rods (404) are connected, and a limiting groove (405) is provided on the outer surface of the swing rod (404). A slider (406) is slidably connected inside the limiting groove (405). An igniter (407) is installed at the end of the slider (406). The driving motor (401) drives the driving screw (409) to rotate, and the threaded block (408) moves up and down along the outer wall of the driving screw (409). Under the action of the traction force of the swing rod (403), the positions of the plurality of igniters (407) are changed.

2. The automatic combustion device of the aluminum thermal reduction method according to claim 1, characterized in that: A dosing box (501) is fixedly connected to one side of the top end of the support frame (1); a driving turntable (505) is installed inside the dosing box (501); a driving block (508) is fixedly connected to an eccentric portion of the outside of the driving turntable (505); a movable frame is slidably connected to the outer surface of the driving turntable (505); a movable groove (507) is provided inside the movable frame; a connecting rod (506) is fixedly connected to the outside of the movable frame; a rubber piston (504) is fixedly connected to one side of the connecting rod (506); an oxygen volume flow meter (503) is installed inside the dosing box (501); a connecting pipe (502) is connected to the outside of the dosing box (501); and a motor for driving the turntable (505) to rotate is installed outside the dosing box (501).

3. The automatic combustion device of the aluminum thermal reduction method according to claim 2, characterized in that: One side of the top of the quantitative box (501) is connected to an air inlet pipe (6), and both (5) and the air inlet pipe (6) are provided with a one-way valve. The other end of the connecting pipe (502) is connected to the inner side of the pit furnace (2).

4. The automatic combustion device of the aluminum thermal reduction method according to claim 2, characterized in that: Slide grooves (9) are provided on both upper and lower sides of the inner wall of the quantitative box (501), and both upper and lower ends of the movable frame are slidably connected to the inner wall of the slide groove (9), and the outer surface of the rubber piston (504) is slidably connected to the inner wall of the quantitative box (501).

5. The automatic combustion device of the aluminum thermal reduction method according to claim 1, characterized in that: One end of the swing rod (403) is rotatably connected to the outer side of the slider (406), and one end of the drive screw (409) away from the drive motor (401) passes through the bottom of the limit frame (402) and is fixedly connected to the rotating plate (10).

6. The automatic combustion device of the aluminum thermal reduction method according to claim 1, characterized in that: A feed pipe 1 (7) and a feed pipe 2 (8) are sequentially installed on the outside of the pit-type furnace (2); the feed pipe 1 (7) is used to transport aluminum powder and magnesium powder into the interior of the pit-type furnace (2); and the feed pipe 2 (8) is used to transport iron oxide into the interior of the pit-type furnace (2).

7. The automatic combustion device of the aluminum thermal reduction method according to claim 1, characterized in that: An oxygen generator (3) is installed on the inner side of the support frame (1), and the oxygen generator (3) is used to generate oxygen.

8. An ignition control system for aluminothermic reduction method, according to an automatic combustion device for aluminothermic reduction method according to any one of claims 1 to 7, characterized in that: Includes the following modules: The ignition control module is responsible for starting or stopping the ignition source according to predetermined conditions: Temperature monitoring and feedback module, used to monitor the temperature of the reaction area in real time to ensure the safety and effectiveness of the ignition operation; Safety monitoring and protection module, used to ensure safety during the ignition process and to monitor and respond to potential risks in real time; Fault diagnosis and alarm module, used to detect whether each part of the ignition system is working properly and can alarm when a fault occurs; The data acquisition and recording module is used to collect and record data related to the ignition control system in real time.

9. An ignition control system for aluminothermic reduction method according to claim 8, characterized in that: The security monitoring and protection module specifically includes: Gas leak detection unit, used to detect the leakage of combustible gas; Temperature monitoring and protection unit, used to monitor the temperature of the combustion area, furnace body, reactants, etc. in real time; Over-temperature protection unit: when the temperature exceeds the set safety threshold, the system automatically starts protection measures; Pressure monitoring and protection unit, used to monitor the internal pressure of the equipment in real time to prevent safety accidents caused by excessive pressure; The electrical protection and overload protection unit detects the electrical parameters of the equipment through current sensors and voltage sensors to ensure the normal operation of the electrical system.

Images