Oxygen-enriched bottom-blown smelting furnace structure

Abstract

The utility model discloses an oxygen -enriched bottom -blowing smelting furnace structure, include: base, the top surface symmetrical fixed connection of base has the support, smelting furnace main part, and the both ends of smelting furnace main part are respectively sleeved and have the closed cylinder, and the closed cylinder rotation is connected on the support, and the end plate is fixed in the closed cylinder end, and the rotating assembly is arranged between the closed cylinder and smelting furnace main part, and the closed cylinder bottom is installed with the discharge gate in rear end, and the smelting furnace main part is opened with the discharge port, transmission mechanism, and transmission mechanism includes transmission assembly and support component, cooling module, and cooling module is arranged in smelting furnace main part, and the air inlet spray head, and the air inlet spray head detachable connection is in the bottom of smelting furnace main part, and monitoring module, and monitoring module is installed in smelting furnace main part. The oxygen -enriched bottom -blowing smelting furnace can pass through the furnace body rotation and bottom -blowing oxygen -enriched and promote the reaction efficiency and the uniformity, and the utility model discloses can pass through the furnace body rotation and bottom -blowing oxygen -enriched and promote the reaction efficiency and the uniformity, and have efficient, easy maintenance, safe and stable and environmental protection adaptability.

Description

Technical Field

[0001] This utility model relates to the field of metal smelting equipment technology, and in particular to a structure of an oxygen-enriched bottom-blown smelting furnace. Background Technology

[0002] Traditional lead-antimony composite ore smelting mainly adopts the process of "fluidized bed roasting desulfurization - blast furnace sintering - blast furnace reduction smelting". Although this process can achieve the recovery of the main metal, it has significant drawbacks: First, desulfurization is incomplete, and the sulfur content of the roasting flue gas is low (usually below 4%), making it difficult to produce acid efficiently. A large amount of sulfur is emitted in the form of low-concentration flue gas, which not only wastes resources but also brings serious environmental pressure. Second, the process is lengthy, involving multiple independent stages such as roasting, sintering, and reduction. Metal loss is easily caused during the transfer of intermediate products (such as roasted sand and sintered blocks), and the comprehensive recovery rate of the main metal is difficult to exceed 90%. Third, energy consumption is high. Traditional equipment such as blast furnaces and reverberatory furnaces have low thermal efficiency, requiring a large amount of metallurgical coke as fuel. Moreover, the equipment has poor sealing, making it difficult to recover waste heat from the flue gas. The energy consumption per unit product is significantly higher than the industry average.

[0003] To address the shortcomings of traditional processes, oxygen-enriched intensified molten pool smelting technologies (including bottom blowing, side blowing, and top blowing) are gradually being promoted and applied in the non-ferrous metal smelting field. Among them, the oxygen-enriched bottom blowing smelting technology, which is an improvement on the Shuikoushan process, has achieved an industrial breakthrough in single lead concentrate smelting due to its advantages such as intense molten pool stirring, high mass and heat transfer efficiency, and strong self-heating smelting capability, and has successfully replaced the blast furnace lead smelting process.

[0004] However, existing oxygen-enriched molten pool smelting equipment still faces the following technical bottlenecks when adapting to the smelting of lead-antimony composite ores:

[0005] Insufficient sealing and rotation performance: The connection between the main body of the smelting furnace and the closed cylinders at both ends mostly adopts a fixed sealing structure, which cannot flexibly adjust the angle of the furnace body according to the smelting process, resulting in material retention during slag and material discharge; some rotatable structures have excessive sealing gaps, causing SO2 flue gas to escape and increasing the difficulty of environmental protection.

[0006] The existing equipment cooling modules are mostly located outside the furnace body, which only cools the furnace shell and cannot effectively cool the high-temperature area of ​​the molten pool. This results in rapid wear of the furnace lining refractory material, short equipment service life, and susceptibility to malfunctions such as slag adhesion and nozzle blockage due to local overheating.

[0007] Based on the above-mentioned technical problems, this utility model provides a structure for an oxygen-enriched bottom-blown melting furnace. Utility Model Content

[0008] The purpose of this invention is to provide a structure for an oxygen-enriched bottom-blown smelting furnace to solve the problems existing in the prior art.

[0009] To achieve the above objectives, this utility model provides the following solution: This utility model provides an oxygen-enriched bottom-blown smelting furnace structure, comprising:

[0010] The base has a bracket symmetrically and fixedly connected to its top surface.

[0011] The furnace body has a closed cylinder fitted at both ends. The closed cylinder is rotatably connected to the support. An end plate is fixed at the end of the closed cylinder and abuts against the furnace body. A rotating assembly is provided between the closed cylinder and the furnace body. The furnace body is rotatably connected to the closed cylinder through the rotating assembly. A discharge gate is installed at the bottom of the closed cylinder located at the rear end. A slag discharge port is opened on the furnace body. The slag discharge port and the discharge gate are arranged correspondingly to each other.

[0012] A transmission mechanism, comprising a transmission component and a support component, both mounted on the top surface of the base, wherein the transmission component is in transmission cooperation with the main body of the smelting furnace, and the support component is used to support the main body of the smelting furnace;

[0013] Cooling module, the cooling module being arranged inside the main body of the smelting furnace;

[0014] An air intake nozzle is detachably connected to the bottom of the smelting furnace body;

[0015] A monitoring module is installed inside the main body of the smelting furnace and connected to a terminal system;

[0016] The end plate at the front end has a feed inlet that is connected to the main body of the smelting furnace. The end plate at the rear end has a discharge outlet that is connected to a chute. The top of the main body of the smelting furnace has a flue gas outlet.

[0017] According to the oxygen-enriched bottom-blown smelting furnace structure provided by this utility model, the rotating assembly includes a first mounting ring and a second mounting ring. The first mounting ring is fixed to the end of the smelting furnace body, and the second mounting ring is detachably connected to the inner wall of the closed cylinder by bolts. The first mounting ring and the second mounting ring are arranged correspondingly. An annular groove is opened on the side wall of the first mounting ring, and a ball is installed in the annular groove. The side of the second mounting ring near the first mounting ring is an arc surface, and the ball slides in contact with the arc surface. The first mounting ring is disposed between the second mounting ring and the end plate, and a sealing member is provided between the first mounting ring and the end plate.

[0018] According to the oxygen-enriched bottom-blown smelting furnace structure provided by this utility model, the transmission component includes an external gear ring and a drive gear. The external gear ring is fixed outside the smelting furnace body. A drive motor and a reducer are fixed on the top surface of the base. The output shaft of the drive motor is connected to the input shaft of the reducer. The output shaft of the reducer is axially connected to the drive gear. The drive gear meshes with the external gear ring.

[0019] The base has a bearing seat fixed on its top surface, and the drive gear is rotatably connected to the bearing seat.

[0020] According to the oxygen-enriched bottom-blown smelting furnace structure provided by this utility model, the support assembly includes a support ring and a transmission wheel. The support ring is fixed to the outer wall of the smelting furnace body, and a support seat is fixed to the top surface of the base. The transmission wheel is rotatably connected to the support seat, and the transmission wheel and the support ring are in a transmission engagement.

[0021] According to the oxygen-enriched bottom-blown smelting furnace structure provided by this utility model, the cooling module includes an inlet pipe and an outlet pipe. A spiral flow channel is formed in the side wall of the smelting furnace body along the length direction. The inlet pipe is connected to one end of the spiral flow channel, and the outlet pipe is connected to the other end of the spiral flow channel. The inlet pipe and the outlet pipe are respectively connected to a water circulation system.

[0022] According to the oxygen-enriched bottom-blown smelting furnace structure provided by this utility model, the monitoring module includes a temperature sensor, a pressure sensor, and a liquid level sensor, which are respectively arranged inside the smelting furnace body.

[0023] The present invention discloses the following technical effects:

[0024] The transmission mechanism works in conjunction with the rotating components to achieve controllable rotation of the main body of the smelting furnace. On the one hand, this can prevent raw materials from accumulating in the furnace and ensure that the raw materials are in full contact with oxygen-enriched gas and heat, reducing the problem of insufficient local reaction. On the other hand, the molten material is mixed more evenly during the rotation process, reducing the risk of component segregation and significantly improving the smelting reaction efficiency and the quality stability of the target product.

[0025] The bottom air inlet nozzle introduces oxygen-enriched gas. Compared with traditional side-blowing and top-blowing methods, the oxygen-enriched gas diffuses from the bottom of the furnace and is more likely to come into contact with the materials throughout the furnace, resulting in higher oxygen utilization and further accelerating the reaction rate.

[0026] The air intake nozzle adopts a detachable connection method. When the nozzle malfunctions such as blockage or wear, it can be quickly disassembled, replaced or cleaned without large-scale disassembly of the smelting furnace body, reducing maintenance difficulty, shortening equipment downtime for maintenance, and improving the continuous operation efficiency of the equipment.

[0027] The monitoring module collects key parameters such as furnace temperature and pressure in real time and transmits them to the terminal system. Operators can remotely monitor the furnace conditions in real time without having to monitor the high-temperature furnace body on-site, thus reducing operational risks. At the same time, precise control based on real-time data (such as adjusting oxygen enrichment and furnace speed) can avoid excessive fluctuations in operating conditions, ensure the stability of the smelting process, and reduce production accidents or product scrap caused by parameter malfunctions.

[0028] The cooling module is located inside the main body of the smelting furnace, which can directly cool the inside of the furnace, effectively control the thermal deformation of the furnace body caused by high-temperature smelting, reduce furnace wear, extend the service life of the main body of the smelting furnace, and reduce equipment replacement costs. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a structural schematic diagram of the oxygen-enriched bottom-blown melting furnace of this utility model;

[0031] Figure 2 for Figure 1 Enlarged view of point A in the middle.

[0032] The components are as follows: 1. Base; 2. Bracket; 3. Furnace body; 4. Enclosed cylinder; 5. End plate; 6. Air inlet nozzle; 7. Feed inlet; 8. Discharge outlet; 9. Exhaust outlet; 10. First mounting ring; 11. Second mounting ring; 12. Ball bearing; 13. External gear ring; 14. Drive gear; 15. Drive motor; 16. Reducer; 17. Support ring; 18. Transmission wheel; 19. Support seat; 20. Spiral flow channel. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0035] Reference Figure 1-2This utility model provides a structure for an oxygen-enriched bottom-blown smelting furnace, comprising:

[0036] Base 1, with bracket 2 symmetrically and fixedly connected to the top surface of base 1;

[0037] The furnace body 3 has a closed cylinder 4 sleeved at both ends. The closed cylinder 4 is rotatably connected to the support 2. An end plate 5 is fixed at the end of the closed cylinder 4. The end plate 5 abuts against the furnace body 3. A rotating component is provided between the closed cylinder 4 and the furnace body 3. The furnace body 3 is rotatably connected to the closed cylinder 4 through the rotating component. A discharge gate is installed at the bottom of the closed cylinder 4 located at the rear end. A slag discharge port is opened on the furnace body 3. The slag discharge port and the discharge gate are arranged correspondingly to the slag discharge port.

[0038] The transmission mechanism includes a transmission component and a support component. Both the transmission component and the support component are installed on the top surface of the base 1. The transmission component is in transmission cooperation with the furnace body 3, and the support component is used to support the furnace body 3.

[0039] Cooling module, which is arranged inside the main body 3 of the smelting furnace;

[0040] Air intake nozzle 6 is detachably connected to the bottom of the smelting furnace body 3;

[0041] The monitoring module is installed inside the main body 3 of the smelting furnace and is connected to the terminal system;

[0042] The end plate 5 at the front end has a feed inlet 7, which is connected to the main body 3 of the smelting furnace. The end plate 5 at the rear end has a discharge outlet 8, which is connected to the chute. The main body 3 of the smelting furnace has a flue gas outlet 9 at the top.

[0043] The top exhaust outlet 9 centrally collects the flue gas, facilitating subsequent connection to a unified flue gas treatment system, meeting environmental emission requirements, and reducing the impact on the surrounding environment.

[0044] The raw materials to be smelted (such as non-ferrous metal mineral raw materials) are continuously and evenly introduced into the main body of the smelting furnace 3 through the feed port 7 of the front end plate 5, forming a material layer of a certain thickness inside the furnace. After the raw material is introduced to the preset amount, the air inlet nozzle 6 installed at the bottom of the smelting furnace 3 is turned on, and oxygen-enriched gas is continuously introduced into the bottom of the furnace through the nozzle. The oxygen-enriched gas diffuses upward from the bottom of the furnace and comes into full contact with the raw materials inside the furnace; at the same time, the main body of the smelting furnace 3 is heated by its own heating components (a conventional configuration of smelting furnaces, and the specific heating method is not limited). When the temperature inside the furnace reaches the raw material smelting reaction threshold, the raw materials and oxygen-enriched gas undergo oxidation, smelting and other chemical reactions to generate molten metal liquid (or target product) and slag. Flue gas is generated during the reaction process. During the smelting reaction, the transmission drive and furnace body control activate the transmission mechanism on base 1. The transmission component engages with the furnace body 3, driving the furnace body 3 to slowly rotate relative to the enclosed cylinder 4 (the enclosed cylinder 4 is fixed to the support 2; only the furnace body rotates) via a rotating component. The support component simultaneously provides stable support to the rotating furnace body 3, preventing furnace body displacement. The rotation of the furnace body ensures thorough mixing of the internal raw materials and molten material, preventing localized material accumulation that could lead to incomplete reaction. It also promotes uniform contact between oxygen-enriched gas and materials, improving reaction efficiency and uniformity. A real-time monitoring and parameter adjustment monitoring module (installed inside the furnace body 3) continuously collects key parameters within the furnace, including smelting temperature, furnace pressure, oxygen concentration, and molten material level, and transmits this data to the terminal system in real time. Operators can monitor data through the terminal system. If parameters deviate from the preset process range (e.g., excessively high / low temperature, insufficient oxygen concentration, etc.), they can adjust the oxygen supply of the air inlet nozzle 6, the drive speed of the transmission components (adjusting the furnace rotation speed), and the cooling intensity of the cooling module to restore the furnace conditions to the optimal state and ensure stable smelting reaction. For slag removal, when the smelting reaction reaches a certain stage, the molten slag gradually separates from the molten metal (the molten slag density is usually less than the molten metal, so it floats on top). When the amount of slag reaches the slag removal threshold, the rotation angle of the furnace body 3 is adjusted via the transmission components, causing the slag removal port on the furnace body to rotate to the position corresponding to the discharge gate at the bottom of the rear closed cylinder 4. Then, the discharge gate is opened, and the molten slag inside the furnace is discharged out of the furnace under gravity through the slag removal port and discharge gate, completing the slag removal. After slag removal, the discharge gate is closed, and the furnace body is rotated back to the initial smelting angle via the transmission components to continue the smelting reaction. When the smelting reaction is complete, the molten metal in the furnace flows towards the rear end plate 5 (the bottom surface of the base 1 is equipped with a tilting device for unilateral lifting), and finally flows into the connected chute through the discharge port 8 in the middle of the rear end plate 5. The chute then transports the molten metal to subsequent processing steps (such as refining, ingot casting, etc.).

[0045] The scheme is further optimized. The rotating component includes a first mounting ring 10 and a second mounting ring 11. The first mounting ring 10 is fixed to the end of the furnace body 3. The second mounting ring 11 is detachably connected to the inner wall of the closed cylinder 4 by bolts. The first mounting ring 10 and the second mounting ring 11 are arranged correspondingly. The side wall of the first mounting ring 10 is provided with an annular groove, and a ball bearing 12 is installed in the annular groove. The side of the second mounting ring 11 near the first mounting ring 10 is an arc surface. The ball bearing 12 slides with the arc surface. The first mounting ring 10 is set between the second mounting ring 11 and the end plate 5. A sealing component is provided between the first mounting ring 10 and the end plate 5.

[0046] The further optimized scheme includes an external gear ring 13 and a drive gear 14. The external gear ring 13 is fixed outside the main body 3 of the smelting furnace. The top surface of the base 1 is fixed with a drive motor 15 and a reducer 16. The output shaft of the drive motor 15 is connected to the input shaft of the reducer 16. The output shaft of the reducer 16 is axially connected to the drive gear 14. The drive gear 14 meshes with the external gear ring 13.

[0047] The base 1 has a bearing seat fixed on its top surface, and the drive gear 14 is rotatably connected to the bearing seat.

[0048] The first mounting ring 10 is fixed to the end of the furnace body 3 and moves synchronously with the furnace body. The second mounting ring 11 is detachably connected to the inner wall of the enclosed cylinder 4 (the enclosed cylinder 4 is fixed to the bracket 2) by bolts, forming a fixed reference. A ball bearing 12 is installed in the annular groove on the side wall of the first mounting ring 10. The side of the second mounting ring 11 closest to the first mounting ring 10 is designed with an arc surface. When the furnace body 3 is driven by the transmission component, the ball bearing 12 rolls in the annular groove and slides in contact with the arc surface of the second mounting ring 11, converting the sliding friction of the furnace body rotation into rolling friction, significantly reducing frictional resistance, making the furnace body rotate more smoothly and consuming less energy. The first mounting ring 10 is confined between the second mounting ring 11 and the end plate 5, and its axial position is fixed to prevent axial displacement during furnace body rotation. The arc surface design and multi-point contact with the ball bearing 12 ensure radial stability during furnace body rotation and prevent swaying. The sealing component (such as a high-temperature resistant sealing ring) between the first mounting ring 10 and the end plate 5 can prevent high-temperature flue gas and molten material from leaking through the rotation gap in the furnace, ensuring the sealing of the smelting environment and preventing the high-temperature medium from corroding components such as the ball bearing 12, thus extending the component's lifespan. The second mounting ring 11 is connected by bolts for easy removal. When the ball bearing 12 wears or the sealing component ages, the second mounting ring 11 can be disassembled and replaced without disassembling the entire furnace body, reducing maintenance costs.

[0049] The scheme is further optimized. The support components include a support ring 17 and a transmission wheel 18. The support ring 17 is fixed to the outer wall of the smelting furnace body 3. A support seat 19 is fixed on the top surface of the base 1. The transmission wheel 18 is rotatably connected to the support seat 19. The transmission wheel 18 and the support ring 17 are in a transmission engagement.

[0050] The support ring 17 is fixed to the outer wall of the furnace body 3 and rotates synchronously with the furnace body. The support base 19 is fixed to the base 1, and the transmission wheel 18 rotatably connected to its top contacts the outer circumferential surface of the support ring 17, forming multi-point support. The weight of the support ring 17 is transmitted to the support base 19 and the base 1 through the transmission wheel 18, dispersing the pressure of the furnace body on the rotating components and preventing damage to the rotating components due to overload. When the furnace body rotates, relative rolling occurs between the support ring 17 and the transmission wheel 18, replacing sliding friction with rolling friction and reducing energy loss during the support process. At the same time, the contact between the transmission wheel 18 and the support ring 17 forms a radial constraint on the furnace body, preventing axial deviation during furnace body rotation and ensuring that the furnace body always rotates stably along the preset axis.

[0051] Further optimization of the scheme: the cooling module includes an inlet pipe and an outlet pipe. A spiral flow channel 20 is opened along the length direction inside the side wall of the smelting furnace body 3. The inlet pipe is connected to one end of the spiral flow channel 20, and the outlet pipe is connected to the other end of the spiral flow channel 20. The inlet pipe and the outlet pipe are respectively connected to the water circulation system.

[0052] A spiral flow channel 20, extending along the length of the side wall of the smelting furnace body 3, forms a continuous cooling channel. A water inlet pipe introduces low-temperature cooling water from the external water circulation system into one end of the spiral flow channel 20. The cooling water flows along the spiral path within the furnace side wall, fully contacting the high-temperature furnace side wall and absorbing heat from the furnace body through heat conduction, thus raising the water temperature. The water, after absorbing heat, flows back to the water circulation system from the other end of the spiral flow channel 20 through the water outlet pipe, forming a closed-loop circulation. The spiral flow channel 20 design extends the residence time of the cooling water within the furnace side wall, and the water flow direction forms a spiral angle with the length of the furnace body, increasing the contact area with the furnace body and significantly improving heat exchange efficiency. Simultaneously, the water circulation system can control the heat dissipation intensity by adjusting the water flow speed to adapt to the temperature requirements of different smelting stages (e.g., increasing the water flow during the high-temperature reaction stage and decreasing the water flow during the heat preservation stage).

[0053] The scheme has been further optimized. The monitoring module includes a temperature sensor, a pressure sensor, and a liquid level sensor, which are respectively arranged inside the main body 3 of the melting furnace.

[0054] In this embodiment, all electrical components are selected according to actual needs, and no specific limitations are made.

[0055] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0056] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A structure for an oxygen-enriched bottom-blown smelting furnace, characterized in that, include: A base (1) is symmetrically and fixedly connected to a bracket (2) on its top surface; The furnace body (3) has a closed cylinder (4) sleeved at both ends. The closed cylinder (4) is rotatably connected to the support (2). An end plate (5) is fixed at the end of the closed cylinder (4). The end plate (5) abuts against the furnace body (3). A rotating component is provided between the closed cylinder (4) and the furnace body (3). The furnace body (3) is rotatably connected to the closed cylinder (4) through the rotating component. A discharge gate is installed at the bottom of the closed cylinder (4) located at the rear end. A slag discharge port is opened on the furnace body (3). The slag discharge port and the discharge gate are arranged correspondingly to the slag discharge port. The transmission mechanism includes a transmission component and a support component. Both the transmission component and the support component are installed on the top surface of the base (1). The transmission component is in transmission cooperation with the furnace body (3). The support component is used to support the furnace body (3). A cooling module is arranged inside the main body (3) of the smelting furnace; An air intake nozzle (6) is detachably connected to the bottom of the furnace body (3); A monitoring module is installed inside the main body (3) of the smelting furnace and connected to the terminal system; The end plate (5) at the front end is provided with a feed inlet (7), which is connected to the main body of the smelting furnace (3). The end plate (5) at the rear end is provided with a discharge outlet (8), which is connected to a chute. The main body of the smelting furnace (3) is provided with a smoke exhaust outlet (9) at the top.

2. The structure of an oxygen-enriched bottom-blown smelting furnace according to claim 1, characterized in that, The rotating assembly includes a first mounting ring (10) and a second mounting ring (11). The first mounting ring (10) is fixed to the end of the main body (3) of the smelting furnace. The second mounting ring (11) is detachably connected to the inner wall of the closed cylinder (4) by bolts. The first mounting ring (10) and the second mounting ring (11) are arranged correspondingly. The side wall of the first mounting ring (10) is provided with an annular groove, and a ball bearing (12) is installed in the annular groove. The side of the second mounting ring (11) near the first mounting ring (10) is an arc surface. The ball bearing (12) slides with the arc surface. The first mounting ring (10) is disposed between the second mounting ring (11) and the end plate (5). A sealing member is provided between the first mounting ring (10) and the end plate (5).

3. The structure of an oxygen-enriched bottom-blown smelting furnace according to claim 1, characterized in that, The transmission assembly includes an external gear ring (13) and a drive gear (14). The external gear ring (13) is fixed outside the main body (3) of the smelting furnace. A drive motor (15) and a reducer (16) are fixed on the top surface of the base (1). The output shaft of the drive motor (15) is connected to the input shaft of the reducer (16). The output shaft of the reducer (16) is axially connected to the drive gear (14). The drive gear (14) meshes with the external gear ring (13). The base (1) has a bearing seat fixed on its top surface, and the drive gear (14) is rotatably connected to the bearing seat.

4. The structure of an oxygen-enriched bottom-blown smelting furnace according to claim 1, characterized in that, The support assembly includes a support ring (17) and a transmission wheel (18). The support ring (17) is fixed to the outer wall of the furnace body (3). A support seat (19) is fixed on the top surface of the base (1). The transmission wheel (18) is rotatably connected to the support seat (19). The transmission wheel (18) and the support ring (17) are in transmission cooperation.

5. The structure of an oxygen-enriched bottom-blown smelting furnace according to claim 1, characterized in that, The cooling module includes an inlet pipe and an outlet pipe. A spiral flow channel (20) is provided in the side wall of the smelting furnace body (3) along the length direction. The inlet pipe is connected to one end of the spiral flow channel (20), and the outlet pipe is connected to the other end of the spiral flow channel (20). The inlet pipe and the outlet pipe are respectively connected to the water circulation system.

6. The structure of an oxygen-enriched bottom-blown smelting furnace according to claim 1, characterized in that, The monitoring module includes a temperature sensor, a pressure sensor, and a liquid level sensor, which are respectively arranged inside the main body (3) of the smelting furnace.

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