Red mud pyrometallurgical smelting device for steel structure production and process thereof

Abstract

The present application relates to the field of steel smelting structure, especially to a kind of bauxite pyrometallurgical smelting device and process for steel structure production, including furnace body, the top of the furnace body is fixedly connected with furnace cover, one end of the top of the furnace cover is fixedly connected with chimney, the other end of the top of the furnace cover is fixedly connected with blanking tube, the furnace body is provided with impurity removal mechanism, one side in the furnace body is provided with adjusting mechanism, the outside of the furnace body is provided with slag conveying mechanism;The impurity removal mechanism includes the rotary motor fixedly connected between the top of the furnace cover, the output shaft of the rotary motor is fixedly connected with rotating shaft, the both sides of the rotating shaft are fixedly connected with connecting plate, the bauxite clinker after deep reduction is made into the furnace body by feed pipe, the output shaft of the rotary motor rotates and cooperates with positioning rod, so that the slag ring blocks the impurities in molten steel, and the molten steel can fall through the discharge port, the impurities in molten steel can be removed, and the production quality of subsequent castings can be guaranteed.

Description

Technical Field

[0001] This invention relates to the field of steelmaking and smelting structures, and more particularly to a red mud pyrometallurgical steelmaking apparatus and process for steel structure production. Background Technology

[0002] Red mud, also known as red clay, is an industrial solid waste discharged after alumina extraction from bauxite. It generally contains a high amount of ferrooxide and resembles reddish soil in appearance, hence its name. However, some varieties contain less ferrooxide and are brown or even grayish-white. Red mud is a polluting waste residue discharged during alumina extraction in the aluminum industry; on average, 1.0 to 2.0 tons of red mud are generated for every ton of alumina produced. As the world's fourth-largest alumina producer, China discharges millions of tons of red mud annually. This large amount of red mud cannot be fully and effectively utilized and can only be stored in large-scale stockpiles, necessitating red mud pyrometallurgical steelmaking equipment and processes.

[0003] In the existing process, the molten steel is located at the bottom of the furnace and the density difference between the molten steel and the slag in the molten state is used to achieve natural stratification by gravity. The slag in the upper layer is discharged through the slag discharge device on one side of the furnace. Fine residues will remain in the molten steel in the furnace. When the molten steel is discharged, impurities are easily discharged with the molten steel, which affects the quality of subsequent steel production and leads to defects such as gas holes, slag holes, and sand holes in the subsequent castings, which seriously affects the yield and quality of the castings. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of the prior art by proposing a red mud pyrometallurgical steelmaking apparatus and process for steel structure production.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a red mud pyrometallurgical steelmaking device for steel structure production, comprising a furnace body, a furnace cover fixedly connected to the top of the furnace body, a chimney fixedly connected to one end of the top of the furnace cover, a feeding pipe fixedly connected to the other end of the top of the furnace cover, a purification mechanism provided inside the furnace body, an adjustment mechanism provided on one side inside the furnace body, and a slag conveying mechanism provided outside the furnace body.

[0006] The impurity removal mechanism includes a rotating motor fixedly connected to the top of the furnace cover. The output shaft of the rotating motor is fixedly connected to a rotating shaft. Connecting plates are fixedly connected to both sides of the rotating shaft. Connecting grooves are opened at both ends of the connecting plates. A slag-blocking ring that can move up and down is provided inside the furnace body. The slag-blocking ring has a trapezoidal cross-section. Several evenly distributed discharge ports are opened at the top of the slag-blocking ring. A connecting port is opened at the top of the slag-blocking ring. A connecting ring is fixedly connected to the inner wall of the connecting port. The inner wall of the connecting ring is engaged with the inner wall of the connecting groove, and the inner wall of the connecting ring and the inner wall of the connecting groove slide together. A positioning ring is fixedly connected to the bottom of the slag-blocking ring. The bottom of the positioning ring is inclined. An L-shaped positioning rod is fixedly connected to the bottom of one side of the inner wall of the furnace body. The top of the positioning rod is located below the inclined surface of the positioning ring. This allows for the removal of impurities in the molten steel, ensuring the production quality of subsequent castings.

[0007] Preferably, the top of the positioning rod is provided with a rotating groove, and a rotating ball is rotatably connected to the inner wall of the rotating groove. The rotating ball and the bottom inclined surface of the positioning ring form a rolling fit. The rotating ball can protect the equipment structure.

[0008] Preferably, the adjusting mechanism includes an electric telescopic rod located inside the furnace body. The circumference of the slag-blocking ring is provided with an annular groove that forms a sliding fit with one end of the piston rod of the electric telescopic rod. An adjusting groove is provided on one side inner wall of the furnace body. An adjusting block is slidably connected to the inner wall of the adjusting groove. The adjusting block is fixedly connected to the sleeve end of the electric telescopic rod. The electric telescopic rod can limit the slag-blocking ring. The sliding of the adjusting block in the adjusting groove can cause the slag-blocking ring to rise.

[0009] Preferably, the bottom inner wall of the adjusting groove is rotatably connected to a threaded rod via a bearing, and the threaded rod is threadedly connected to the adjusting block. The top of the furnace cover is provided with a rotatable adjusting shaft, and the surface of the adjusting shaft is fixedly connected with adjusting teeth. The top output shaft of the rotating motor is fixedly connected with mounting teeth, and the mounting teeth mesh with the adjusting teeth. The threaded rod allows the adjusting block to slide within the inner wall of the adjusting groove.

[0010] Preferably, a fixed shaft is fixedly connected to the top of the threaded rod, a fixed groove is provided on the top of the fixed shaft, a fixed spring is fixedly connected to the bottom inner wall of the fixed groove, a fixed block is fixedly connected to the top of the fixed spring to form a sliding fit with the inner wall of the fixed groove, the fixed block is fixedly connected to the adjusting shaft, and the setting of the fixed block allows the adjusting teeth and the mounting teeth to contact or separate.

[0011] Preferably, a positioning shaft is rotatably connected to the top side of the furnace cover via a bearing, and a positioning plate is fixedly connected to the top of the positioning shaft. The positioning plate is located above the adjusting teeth, and the positioning plate facilitates the rotation or stopping of the adjusting teeth.

[0012] Preferably, the slag conveying mechanism includes a slag conveying ring fixedly connected to and surrounding the outer wall of the furnace body. The outer wall of the furnace body has several evenly distributed slag discharge ports. The bottom of the slag conveying ring has a slag conveying groove. The inner wall of the slag conveying groove is slidably connected to a slag conveying plate. The slag conveying plate is provided to facilitate subsequent processing.

[0013] Preferably, the top of the slag conveying plate is provided with several evenly distributed slag conveying ports, a baffle is fixedly connected to one side of the outer wall of the furnace body, a slag discharge port is provided on the top inner wall of the slag conveying ring, the slag discharge port is located directly below the baffle, and a slag collection box is placed on one side of the furnace body, which is connected to the slag discharge port through the slag conveying channel. The baffle facilitates the slag to fall into the slag collection box through the slag conveying channel.

[0014] Preferably, a drive shaft is rotatably connected to one side of the outer wall of the furnace body via a rotating frame bearing. The drive shaft is connected to the output shaft of the rotating motor via a belt pulley. Drive teeth are fixedly connected to the surface of the drive shaft. A drive groove is provided on one side of the inner wall of the slag conveying ring. A drive ring is slidably connected to the inner wall of the drive groove. The drive ring meshes with the drive teeth. The drive ring is provided to convey the residue.

[0015] A red mud pyrometallurgical steelmaking process for steel structure production, using the aforementioned apparatus, includes the following processes:

[0016] S1: The deep-reduced red mud clinker is fed into the furnace through the feed pipe. The starting of the rotating motor can work with the positioning rod to make the slag-blocking ring block the impurities in the molten steel, and the molten steel can fall through the discharge port.

[0017] S2: The slag-blocking ring is raised by adjusting the mechanism, which allows the residue to rise and be discharged. After discharge, the adjusting mechanism loses the drive of the rotating motor, allowing the slag-blocking ring to fall and be cleaned again.

[0018] S3: The slag conveying mechanism can process the discharged residue. The rotation of the motor provides a synchronous power source for the slag conveying mechanism, which can collect the residue for subsequent processing.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. This invention allows the deep-reduced red mud clinker to enter the furnace through the feed pipe. The rotation of the output shaft of the rotating motor, in conjunction with the positioning rod, causes the slag-blocking ring to block impurities in the molten steel. The molten steel can then fall through the discharge port, which removes impurities from the molten steel and ensures the production quality of subsequent castings.

[0021] 2. By moving the piston rod of the electric telescopic rod to the limit position of the annular groove, and cooperating with the up and down movement of the adjusting teeth, the mounting teeth can drive the adjusting teeth to rotate, which can make the waste slag and impurities rise and approach the slag discharge port, and then be discharged through the slag discharge port, thus avoiding the accumulation of residues that interfere with the flow of molten steel.

[0022] 3. Rotating the output shaft of the motor causes the transmission gear to rotate. At this time, the transmission ring rotates in the transmission groove. With the obstruction of the baffle, the residue is discharged into the slag collection box through the slag conveying port and slag conveying channel, which facilitates the subsequent reprocessing of the residue. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural schematic diagram of a red mud pyrometallurgical steelmaking apparatus for steel structure production according to the present invention.

[0024] Figure 2 This is a schematic diagram of the slag-blocking ring of a red mud pyrometallurgical steelmaking device for steel structure production according to the present invention.

[0025] Figure 3 This is a schematic diagram of the positioning rod of a red mud pyrometallurgical steelmaking device for steel structure production according to the present invention;

[0026] Figure 4 for Figure 3 Enlarged structural diagram at point A;

[0027] Figure 5 This is a schematic diagram of the structure of the rotating shaft of a red mud pyrometallurgical steelmaking device for steel structure production according to the present invention;

[0028] Figure 6 for Figure 5 Enlarged structural diagram at point A;

[0029] Figure 7 This is a schematic diagram of the structure of the regulating block of the red mud pyrometallurgical steelmaking device for steel structure production according to the present invention;

[0030] Figure 8 This is a schematic diagram of the adjusting teeth of a red mud pyrometallurgical steelmaking device for steel structure production according to the present invention.

[0031] Figure 9 This is a schematic diagram of the slag conveying plate of a red mud pyrometallurgical steelmaking device for steel structure production according to the present invention;

[0032] Figure 10This is a schematic diagram of the transmission ring of a red mud pyrometallurgical steelmaking device for steel structure production according to the present invention.

[0033] Figure 11 This is a front view of a red mud pyrometallurgical steelmaking apparatus for steel structure production according to the present invention.

[0034] Figure 12 This is a partial top view of a red mud pyrometallurgical steelmaking apparatus for steel structure production according to the present invention.

[0035] In the diagram: 1. Furnace body; 2. Furnace cover; 3. Rotating motor; 4. Rotating shaft; 5. Connecting plate; 6. Connecting groove; 7. Slag-blocking ring; 8. Discharge port; 9. Connecting port; 10. Connecting ring; 11. Positioning ring; 12. Positioning rod; 13. Rotating groove; 14. Rotating ball; 15. Electric telescopic rod; 16. Ring groove; 17. Adjusting groove; 18. Adjusting block; 19. Adjusting shaft; 20. Adjusting gear; 21. Threaded rod; 22. Fixed shaft; 23. Fixed groove; 24. Fixed spring; 25. Fixed block; 26. Positioning shaft; 27. Positioning plate; 28. Slag conveying ring; 29. ​​Slag discharge port; 30. Slag conveying trough; 31. Slag conveying plate; 32. Slag conveying port; 33. Baffle; 34. Slag collection box; 35. Drive shaft; 36. Drive gear; 37. Drive groove; 38. Drive ring; 39. Mounting gear. Detailed Implementation

[0036] The following description is intended to disclose the invention and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0037] like Figures 1-12 The red mud pyrometallurgical steelmaking apparatus for steel structure production shown includes a furnace body 1, a furnace cover 2 fixedly connected to the top of the furnace body 1, a chimney fixedly connected to one end of the top of the furnace cover 2, a feeding pipe fixedly connected to the other end of the top of the furnace cover 2, a cleaning mechanism inside the furnace body 1, an adjusting mechanism on one side inside the furnace body 1, and a slag conveying mechanism outside the furnace body 1.

[0038] The impurity removal mechanism includes a rotating motor 3 fixedly connected to the top of the furnace cover 2. The output shaft of the rotating motor 3 is fixedly connected to a rotating shaft 4. Connecting plates 5 are fixedly connected to both sides of the rotating shaft 4. Connecting grooves 6 are opened at both ends of the connecting plates 5. A slag-blocking ring 7 that can move up and down is provided inside the furnace body 1. The slag-blocking ring 7 has a trapezoidal cross-section. Several evenly distributed discharge ports 8 are opened at the top of the slag-blocking ring 7. A connecting port 9 is opened at the top of the slag-blocking ring 7. A connecting ring 10 is fixedly connected to the inner wall of the connecting port 9. The inner wall of the connecting ring 10 is engaged with the inner wall of the connecting groove 6, and the inner wall of the connecting ring 10 and the inner wall of the connecting groove 6 slide together. A positioning ring 11 is fixedly connected to the bottom of the slag-blocking ring 7. The bottom of the positioning ring 11 is inclined. An L-shaped positioning rod 12 is fixedly connected to the bottom of the inner wall of one side of the furnace body 1. The top of the positioning rod 12 is located below the inclined surface of the positioning ring 11.

[0039] The top of the positioning rod 12 is provided with a rotating groove 13, and a rotating ball 14 is rotatably connected to the inner wall of the rotating groove 13. The rotating ball 14 and the bottom inclined surface of the positioning ring 11 form a rolling fit. The rotating ball 14 can reduce the friction between the positioning rod 12 and the positioning ring 11, thus protecting the equipment structure.

[0040] The adjustment mechanism includes an electric telescopic rod 15 located inside the furnace body 1. The circumference of the slag-blocking ring 7 is provided with an annular groove 16 that forms a sliding fit with one end of the piston rod of the electric telescopic rod 15. An adjustment groove 17 is provided on one side inner wall of the furnace body 1. An adjustment block 18 is slidably connected to the inner wall of the adjustment groove 17. The adjustment block 18 is fixedly connected to the sleeve end of the electric telescopic rod 15. The electric telescopic rod 15 can limit the slag-blocking ring 7 when the piston rod is inserted into the annular groove 16 to prevent it from falling. As the adjustment block 18 slides in the adjustment groove 17, the slag-blocking ring 7 can rise.

[0041] The bottom inner wall of the adjusting groove 17 is rotatably connected to a threaded rod 21 via a bearing. The threaded rod 21 is threadedly connected to the adjusting block 18. The top of the furnace cover 2 is provided with a rotatable adjusting shaft 19. The surface of the adjusting shaft 19 is fixedly connected with an adjusting tooth 20. The top output shaft of the rotating motor 3 is fixedly connected with an mounting tooth 39. The mounting tooth 39 meshes with the adjusting tooth 20. The threaded rod 21 can apply force to the adjusting block 18 when rotating, so that the adjusting block 18 can slide in the inner wall of the adjusting groove 17. The adjusting tooth 20 is designed to rotate synchronously when the mounting tooth 39 rotates.

[0042] A fixed shaft 22 is fixedly connected to the top of the threaded rod 21. A fixed groove 23 is opened on the top of the fixed shaft 22. A fixed spring 24 is fixedly connected to the bottom inner wall of the fixed groove 23. A fixed block 25 is fixedly connected to the top of the fixed spring 24, which forms a sliding fit with the inner wall of the fixed groove 23. The fixed block 25 is fixedly connected to the adjusting shaft 19. The fixed block 25 can slide in the inner wall of the fixed groove 23, which allows the adjusting tooth 20 to contact or separate from the mounting tooth 39.

[0043] A positioning shaft 26 is rotatably connected to the top side of the furnace cover 2 via a bearing. A positioning plate 27 is fixedly connected to the top of the positioning shaft 26. The positioning plate 27 is located above the adjusting tooth 20. The positioning plate 27 can rotate in conjunction with the positioning shaft 26, which can limit or loosen the adjusting tooth 20, making it easy to rotate or stop the adjusting tooth 20.

[0044] The slag conveying mechanism includes a slag conveying ring 28 that is fixedly connected to and surrounds the outer wall of the furnace body 1. The outer wall of the furnace body 1 has several evenly distributed slag discharge ports 29. The bottom of the slag conveying ring 28 has a slag conveying trough 30. The inner wall of the slag conveying trough 30 is slidably connected to a slag conveying plate 31. The slag conveying plate 31 can convey the residue falling through the slag discharge ports 29 for subsequent processing.

[0045] The top of the slag conveying plate 31 is provided with several evenly distributed slag conveying ports 32. A baffle 33 is fixedly connected to one side of the outer wall of the furnace body 1. The top inner wall of the slag conveying ring 28 is provided with a slag discharge port, which is located directly below the baffle 33. A slag collection box 34 is placed on one side of the furnace body 1 and connected between the discharge ports through the slag conveying channel. The baffle 33 can block the residue, which can facilitate the residue to fall into the slag collection box 34 through the slag conveying channel.

[0046] A drive shaft 35 is rotatably connected to one side of the outer wall of the furnace body 1 via a rotating frame bearing. The drive shaft 35 is connected to the output shaft of the rotating motor 3 via a belt pulley. A drive gear 36 is fixedly connected to the surface of the drive shaft 35. A drive groove 37 is opened on one side of the inner wall of the slag conveying ring 28. A drive ring 38 is slidably connected to the inner wall of the drive groove 37. The drive ring 38 and the drive gear 36 mesh with each other. The drive ring 38 can rotate in the drive groove 37. The rotation of the output shaft of the rotating motor 3 causes the drive shaft 35 to rotate. The rotation of the drive shaft 35 causes the drive gear 36 to rotate. The drive gear 36 causes the drive ring 38 to rotate. At this time, the slag can be conveyed.

[0047] A red mud pyrometallurgical steelmaking process for steel structure production, using the aforementioned apparatus, includes the following processes:

[0048] S1: The deep-reduced red mud clinker is fed into the furnace body 1 through the feed pipe. The rotating motor 3 is started and can work with the positioning rod 12 to make the slag-blocking ring 7 block the impurities in the molten steel, and the molten steel can fall through the discharge port 8.

[0049] S2: The slag-blocking ring 7 is raised by the adjustment mechanism, which allows the residue to rise and be discharged. After the discharge is completed, the adjustment mechanism loses the drive of the rotating motor 3, which allows the slag-blocking ring to fall and be cleaned again.

[0050] S3: The slag discharge mechanism can process the discharged residue. The rotation of the rotating motor 3 provides a synchronous power source for the slag discharge mechanism, which can collect the residue for subsequent processing.

[0051] In use, the raw material after deep reduction is fed into the furnace body 1. Starting the rotating motor 3 causes the rotating shaft 4 to rotate, which in turn causes the connecting plate 5 to rotate. At this time, the slag-blocking ring 7 and the limiting position of the connecting groove 6 can rotate synchronously. The rotation of the slag-blocking ring 7 causes the positioning ring 11 to rotate. The positioning ring 11 is subjected to the force of the rotating ball 14 on the positioning rod 12, which causes it to move up and down at high frequency. That is, the slag-blocking ring 7 can rotate at high speed and move up and down at the same time, which can ensure that the molten steel flows smoothly through the discharge port 8, and the residue flies to the inner wall of the furnace body 1 under the action of centrifugal force. Therefore, the impurities in the molten steel can be removed, which can ensure the production quality of subsequent castings.

[0052] When there is a lot of residue on the slag-blocking ring 7, stop the rotation of the rotating motor 3 and adjust it to a suitable position so that the ring groove 16 is aligned with the piston rod of the electric telescopic rod 15. Then start the electric telescopic rod 15 and insert the piston rod into the ring groove 16. Rotate the positioning plate 27 in conjunction with the positioning shaft 26 to lose the rotation of the adjusting tooth 20. At this time, the fixed block 25 can move upward under the pressure of the fixed spring 24 and make the adjusting tooth 20 mesh with the mounting tooth 39. Start the rotating motor 3 to make the adjusting tooth 20 rotate, which in turn makes the threaded rod 21 rotate. The rotation of the threaded rod 21 can make the adjusting block 18 slide in the adjusting groove 17, which can make the slag-blocking ring 7 rise and cool down. After the residue is aligned with the slag discharge port 29, the adjusting tooth 20 is separated from the mounting tooth 39. Start the rotating motor 3 to make the slag-blocking ring 7 rotate, which can make the residue be discharged into the slag conveying ring 28 through the slag discharge port 29, which can prevent too much residue from remaining on the slag-blocking ring 7 and affecting the falling of molten steel.

[0053] When the residue flies into the slag conveying ring 28 and is located on the slag conveying plate 31, starting the rotating motor 3 will cause the transmission shaft 35 to rotate. The rotation of the transmission shaft 35 will cause the transmission gear 36 to rotate. The rotation of the transmission gear 36 will cause the transmission ring 38 to rotate. The rotation of the transmission ring 38 will cause the slag conveying plate 31 to rotate, thus conveying the residue. When the residue is conveyed to the slag discharge port, it is limited by the baffle 33. At this time, it can fall into the slag collection box 34 through the channel. The residue in the slag collection box 34 can then be processed.

[0054] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made without departing from the spirit and scope of the invention, and all such changes and modifications fall within the scope of the claims. The scope of protection claimed by the appended claims and their equivalents is defined.

Claims

1. A red mud pyrometallurgical steelmaking apparatus for steel structure production, comprising a furnace body (1), a furnace cover (2) fixedly connected to the top of the furnace body (1), a chimney fixedly connected to one end of the top of the furnace cover (2), and a feed pipe fixedly connected to the other end of the top of the furnace cover (2), characterized in that: The furnace body (1) is equipped with a cleaning mechanism, the furnace body (1) is equipped with an adjustment mechanism on one side, and the furnace body (1) is equipped with a slag conveying mechanism outside. The impurity removal mechanism includes a rotating motor (3) fixedly connected to the top of the furnace cover (2). The output shaft of the rotating motor (3) is fixedly connected to a rotating shaft (4). Both sides of the rotating shaft (4) are fixedly connected to connecting plates (5). Both ends of the connecting plates (5) are provided with connecting grooves (6). A slag-blocking ring (7) that can move up and down is provided inside the furnace body (1). The cross-section of the slag-blocking ring (7) is trapezoidal. The top of the slag-blocking ring (7) is provided with several evenly distributed discharge ports (8). The top of the slag-blocking ring (7) is provided with connecting grooves (6). The inner wall of the connecting port (9) is fixedly connected to a connecting ring (10). The inner wall of the connecting ring (10) is engaged with the inner wall of the connecting groove (6), and the inner wall of the connecting ring (10) and the inner wall of the connecting groove (6) are in sliding fit. The bottom of the slag-blocking ring (7) is fixedly connected to a positioning ring (11). The bottom of the positioning ring (11) is inclined. The bottom of the inner wall of one side of the furnace body (1) is fixedly connected to a positioning rod (12) with an L-shaped structure. The top of the positioning rod (12) is located below the inclined surface of the positioning ring (11).

2. The red mud pyrometallurgical steelmaking apparatus for steel structure production according to claim 1, characterized in that: The top of the positioning rod (12) is provided with a rotating groove (13), and a rotating ball (14) is rotatably connected to the inner wall of the rotating groove (13). The rotating ball (14) and the bottom inclined surface of the positioning ring (11) form a rolling fit.

3. The red mud pyrometallurgical steelmaking apparatus for steel structure production according to claim 1, characterized in that: The adjustment mechanism includes an electric telescopic rod (15) located inside the furnace body (1). The circumference of the slag-blocking ring (7) is provided with an annular groove (16) that forms a sliding fit with one end of the piston rod of the electric telescopic rod (15). An adjustment groove (17) is provided on one side of the inner wall of the furnace body (1). An adjustment block (18) is slidably connected to the inner wall of the adjustment groove (17). The adjustment block (18) is fixedly connected to the sleeve end of the electric telescopic rod (15).

4. The red mud pyrometallurgical steelmaking apparatus for steel structure production according to claim 3, characterized in that: The bottom inner wall of the adjustment groove (17) is rotatably connected to a threaded rod (21) via a bearing. The threaded rod (21) is connected to the adjustment block (18) via a thread. The top of the furnace cover (2) is provided with a rotatable adjustment shaft (19). An adjustment tooth (20) is fixedly connected to the surface of the adjustment shaft (19). The top output shaft of the rotating motor (3) is fixedly connected to an installation tooth (39). The installation tooth (39) meshes with the adjustment tooth (20).

5. A red mud pyrometallurgical steelmaking apparatus for steel structure production according to claim 4, characterized in that: The top of the threaded rod (21) is fixedly connected to a fixed shaft (22), the top of the fixed shaft (22) is provided with a fixed groove (23), the bottom inner wall of the fixed groove (23) is fixedly connected to a fixed spring (24), the top of the fixed spring (24) is fixedly connected to a fixed block (25) that forms a sliding fit with the inner wall of the fixed groove (23), and the fixed block (25) is fixedly connected to the adjusting shaft (19).

6. A red mud pyrometallurgical steelmaking apparatus for steel structure production according to claim 5, characterized in that: The top side of the furnace cover (2) is rotatably connected to a positioning shaft (26) via a bearing, and a positioning plate (27) is fixedly connected to the top of the positioning shaft (26). The positioning plate (27) is located above the adjusting teeth (20).

7. The red mud pyrometallurgical steelmaking apparatus for steel structure production according to claim 1, characterized in that: The slag conveying mechanism includes a slag conveying ring (28) that is fixedly connected to the outer wall of the furnace body (1) and surrounds the furnace body (1). The outer wall of the furnace body (1) is provided with a number of evenly distributed slag discharge ports (29). The bottom of the slag conveying ring (28) is provided with a slag conveying groove (30). The inner wall of the slag conveying groove (30) is slidably connected with a slag conveying plate (31).

8. A red mud pyrometallurgical steelmaking apparatus for steel structure production according to claim 7, characterized in that: The top of the slag conveying plate (31) is provided with several evenly distributed slag conveying ports (32). A baffle (33) is fixedly connected to one side of the outer wall of the furnace body (1). The top inner wall of the slag conveying ring (28) is provided with a slag discharge port. The slag discharge port is located directly below the baffle (33). A slag collection box (34) is placed on one side of the furnace body (1) and connected between the discharge ports through the slag conveying channel.

9. A red mud pyrometallurgical steelmaking apparatus for steel structure production according to claim 8, characterized in that: A drive shaft (35) is rotatably connected to one side of the outer wall of the furnace body (1) via a rotating frame bearing. The drive shaft (35) is connected to the output shaft of the rotating motor (3) via a belt pulley. A drive tooth (36) is fixedly connected to the surface of the drive shaft (35). A drive groove (37) is opened on one side of the inner wall of the slag conveying ring (28). A drive ring (38) is slidably connected to the inner wall of the drive groove (37). The drive ring (38) meshes with the drive tooth (36).

10. A red mud pyrometallurgical steelmaking process for steel structure production, using the apparatus described in any one of claims 1-9, characterized in that: Including the following processes: S1: The deep-reduced red mud clinker is fed into the furnace body (1) through the feed pipe. The rotating motor (3) is started and can work with the positioning rod (12) to block the impurities in the molten steel with the slag-blocking ring (7), and the molten steel can fall through the discharge port (8). S2: By adjusting the mechanism, the slag-blocking ring (7) is raised, which allows the residue to rise and be discharged. After the discharge is completed, the adjustment mechanism loses the drive of the rotating motor (3), which allows the slag-blocking ring to fall and be cleaned again. S3: The slag can be processed by the slag conveying mechanism. The rotation of the rotating motor (3) provides a synchronous power source for the slag conveying mechanism, which can collect the slag and prepare it for subsequent processing.

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