Auxiliary slagging-off system and method suitable for molten iron

Abstract

The auxiliary slagging-off system comprises a molten iron transfer trolley, a slagging-off mechanism and a slagging-off mechanism, the slagging-off mechanism comprises a lifting guide beam and at least one lifting sliding table in sliding connection with the lifting guide beam, at least one slagging-off gun is arranged on the lifting sliding table, and a lifting driving mechanism is arranged on the other side of the lifting guide beam; the slagging-off mechanism comprises a walking chassis and a supporting beam frame rotationally arranged on the walking chassis, a horizontal guide beam and a sliding trolley are arranged at the top end of the supporting beam frame, and the sliding trolley is in transmission connection with the rear end of the horizontal guide beam through a traction mechanism; a supporting hinged support is arranged at the front end of the sliding trolley and hinged to the triangular base, a driving oil cylinder hinged to the triangular base is arranged at the rear end of the sliding trolley, and the driving oil cylinder drives the triangular base to conduct pitching angle adjustment along the supporting hinged support. And a slagging-off arm and a slagging-off claw are arranged on the front side of the triangular seat. According to the invention, slag driving and slag skimming operations can be automatically realized, the slag skimming time is shortened, the slag skimming efficiency is improved, and the slag skimming iron loss is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of molten iron blowing, and in particular to an auxiliary slagging system and method suitable for molten iron. Background Art

[0002] In the existing slag removal process of hot metal desulfurization, the slag after hot metal desulfurization is relatively scattered near the ladle mouth and cannot be concentrated in one place. Therefore, the slag removal device needs to be frequently rotated to adjust the slag removal position, which brings great difficulty to the slag removal work, resulting in a long slag removal time, the hot metal slag is not easy to be removed cleanly, the slag removal iron loss is large, and the cost is high. In addition, the slag removal device is frequently operated, and equipment accidents such as the connection bolt cutting and the reducer bearing breaking often occur. Its operation and maintenance costs are high, which affects the service life of the slag removal device. Summary of the invention

[0003] Technical problem to be solved: In view of the problems existing in the prior art, the present invention provides an auxiliary slag removal system and method suitable for molten iron. By means of the slag removal mechanism, a slag removal gun is correspondingly inserted into the molten iron and a small amount of nitrogen is blown into the molten iron slag. The molten iron slag can be completely driven to the vicinity of the ladle mouth, and then the molten iron slag is removed by the slag removal mechanism, thereby shortening the slag removal time, improving the slag removal efficiency, reducing the slag removal iron loss, and extending the service life of the slag removal mechanism.

[0004] Technical solution: The auxiliary slag removal system suitable for molten iron described in the present invention comprises: A molten iron transfer vehicle, the molten iron transfer vehicle comprising a transfer chassis and a ladle support arranged on the transfer chassis, a molten iron ladle is rotatably connected to the ladle support, and a ladle turning mechanism is arranged on one side of the molten iron ladle to drive the molten iron ladle to rotate along the ladle support; A slag-removing mechanism, the slag-removing mechanism comprises a lifting guide beam correspondingly arranged above the molten iron ladle, the lifting guide beam is slidably connected with at least one lifting slide, and the lifting slide is vertically arranged with at least one slag-removing gun on the side away from the lifting guide beam; a lifting drive mechanism is arranged on the side of the lifting guide beam different from the lifting slide, the lifting drive mechanism is transmission-connected with the lifting slide and drives the lifting slide to move up and down along the lifting guide beam; The slag scraping mechanism includes a walking chassis and a rotating support frame correspondingly arranged on the walking chassis, a supporting beam frame is rotatably arranged on the top of the rotating support frame, a horizontal guide beam and a sliding trolley slidably connected to the horizontal guide beam are arranged on the top of the supporting beam frame along its length direction, and the sliding trolley is connected to the rear end of the horizontal guide beam through a traction mechanism; a supporting hinge seat is arranged at the front end of the sliding trolley, the supporting hinge seat is hinged to one corner of the triangular seat, a driving cylinder hinged to the other corner of the triangular seat is arranged at the rear end of the sliding trolley, and the driving cylinder drives the triangular seat to adjust the pitch angle along the supporting hinge seat; a slag scraping arm is arranged at a front corner of the triangular seat, a downwardly bent bent portion is arranged at the front end of the slag scraping arm, and a slag scraping claw made of high temperature resistant material is arranged at the far end of the bent portion.

[0005] Preferably, the lifting slide comprises two correspondingly arranged up and down along the lifting guide beam, and the slag driving gun comprises two correspondingly connected to the two lifting slides and arranged side by side.

[0006] Preferably, the lifting guide beam comprises two vertically corresponding ones, and the lifting slide is correspondingly arranged between the two lifting guide beams; a guide groove is arranged on the inner side of the lifting guide beam, and limiting rollers which are clamped in the guide groove are correspondingly arranged on the upper and lower sides of the lifting slide; and a lifting ear for connecting the traction wire is arranged on the top of the lifting slide.

[0007] Preferably, guide wheels for winding the traction wires are provided at the top ends of the two lifting guide beams; The lifting drive mechanism includes a supporting angle seat correspondingly connected to one side of the lifting guide beam, and a traction drive component is arranged on the supporting angle seat. A traction steel wire is wound around the traction drive component, and the free end of the traction steel wire passes around the guide wheel and is transmission-connected to the lifting slide.

[0008] Preferably, the traction drive assembly includes a supporting base plate fixedly connected to the supporting angle seat, two first bearing seats are relatively arranged on the supporting base plate, a roller is rotatably connected between the two first bearing seats, and a wire winding area is arranged in the circumferential direction of the roller; a transmission is arranged at one end of the roller, and the roller is connected to one transmission shaft of the transmission through a coupling; a second bearing seat is arranged at the other end of the transmission, and a motor drive shaft of the traction drive motor is mounted in the second bearing seat, and the motor drive shaft is transmission-connected to the other transmission shaft of the transmission.

[0009] Preferably, a hydraulic oil station and a hydraulic pump assembly are provided on the traveling chassis, and the hydraulic pump assembly is connected to the driving cylinder via a hydraulic oil circuit.

[0010] Preferably, a support plate is provided at the top of the rotating support frame, a rotating drive plate is provided on the support plate, and the support beam is correspondingly supported on the rotating drive plate; a plurality of walking components are symmetrically provided along the rotating drive plate on the lower side of the support beam, and the walking components are correspondingly supported on the support plate.

[0011] The present invention also discloses an auxiliary slag removal method for converter steelmaking, the auxiliary slag removal method comprising the following steps: Step 1: Drive the molten iron transfer vehicle carrying molten iron to the desulfurization and slag making station; after the desulfurization and slag making operation is completed, the ladle turning mechanism drives the molten iron ladle to tilt 40° along the ladle support toward the side of the slag removal mechanism to complete the slag removal preparation; Step 2: The traction drive motor drives the drum to rotate and releases the traction wire through the wire winding area. The traction wire relaxes the restriction on the lifting slide. The lifting slide moves downward along the lifting guide beam under its own weight, thereby driving the slag driving gun to be inserted downward into the molten iron in the ladle 100mm above the molten iron level; then, nitrogen is injected into the slag driving gun through the air supply system to drive the molten iron slag to the vicinity of the ladle mouth; Step 3: Control the walking chassis of the slag removal mechanism to move to a specific position near the ladle, and then drive the support beam frame and its upper structure to rotate along the support disk to the corresponding direction of the ladle opening by rotating the driving disk; then drive the sliding trolley to move forward to the front end of the horizontal guide beam through the traction mechanism, and switch from the retracted state of the slag removal arm to the expanded state of the slag removal arm, so that the slag removal arm moves forward to the top of the ladle opening; then, drive the tripod and the slag removal arm at the front end of the ladle to tilt downward and rotate along the support hinge seat through the driving cylinder to the slag removal arm downward pressure state and insert it into the side of the molten iron slag away from the ladle opening; then, drive the sliding trolley to move backward to the rear end of the horizontal guide beam through the traction mechanism, and switch from the retracted state of the slag removal arm to the retracted slag removal state of the slag removal arm, and the slag removal arm can remove the molten iron slag from the ladle opening during the contraction process; repeat the above steps until the molten iron slag at the ladle opening is completely removed; Step 4: Control the slag removal mechanism to move away from the molten iron transfer vehicle to complete the reset, control the traction drive assembly to drive the lifting slide to rise and drive the slag driving gun to reset and stop supplying air, control the ladle turning mechanism to drive the molten iron ladle to return to the normal position, and control the molten iron transfer vehicle to leave the desulfurization slag making station.

[0012] Compared with the prior art, the present invention has at least the following beneficial effects: 1. The auxiliary slag removal system of the present invention inserts the slag removal gun into the molten iron through the slag removal mechanism and blows a small amount of nitrogen into the molten iron slag, so that all the molten iron slag can be driven to the vicinity of the ladle mouth, and then the molten iron slag is removed by the slag removal mechanism, thereby shortening the slag removal time, improving the slag removal efficiency, reducing the slag removal iron loss, and extending the service life of the slag removal mechanism; 2. The auxiliary slag removal method can realize the automatic gathering and slag removal of molten iron desulfurization slag, shorten the operation frequency of the slag removal mechanism, and improve the slag removal efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the auxiliary slag removal system of the present invention; Figure 2 for Figure 1 The main view of the structure of the China Railway water tank car; Figure 3 for Figure 2 Left view of the structure of the China Railway water tank car; Figure 4 for Figure 2 Schematic diagram of the structure of the China Iron ladle in the state of waiting for slag removal; Figure 5 for Figure 1 The main view of the structure of the middle slag removal mechanism; Figure 6 for Figure 5 A magnified schematic diagram of the structure of the middle slag-driving mechanism at A; Figure 7 for Figure 6 Left view of the middle lifting slide structure; Figure 8 for Figure 6 A top view of the middle lifting drive mechanism structure; Fig. 9 for Figure 1 The main view of the structure of the middle slag removal mechanism; Fig.10 for Fig. 9 Schematic diagram of the structure of the middle slag removal mechanism in different slag removal states.

[0014] Reference numerals: 100. Molten iron transfer vehicle; 1. Transfer chassis; 2. Ladle support; 3. Ladle turning mechanism; 4. Molten iron ladle; 200, slag-removing mechanism; 5, lifting guide beam; 51, connecting end beam; 52, I-shaped support beam; 53, guide wheel; 6, slag-removing gun; 7, lifting slide; 71, slide seat; 72, limit roller; 73, lifting lug; 8, lifting drive mechanism; 81, support angle seat; 82, traction drive assembly; 821, support base plate; 822, first bearing seat; 823, roller; 824, wire winding area; 825, coupling; 826, transmission; 827, second bearing seat; 828, motor drive shaft; 829, traction drive motor; 83, traction wire; 300. Slag scraping mechanism; 9. Travel chassis; 10. Rotating support frame; 11. Hydraulic oil station; 12. Hydraulic pump assembly; 13. Support plate; 14. Rotating drive plate; 15. Travel assembly; 16. Support beam frame; 17. Horizontal guide beam; 18. Traction mechanism; 19. Sliding trolley; 20. Support hinge seat; 21. Triangular seat; 22. Hinge connector; 23. Driving cylinder; 24. Slag scraping arm; 25. Slag scraping claw; 26. Slag scraping arm in retracted state; 27. Slag scraping arm in extended state; 28. Slag scraping arm in pressed down state; 29. ​​Slag scraping arm in retracted state. DETAILED DESCRIPTION

[0015] To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the following will be combined with the attached Figures 1 to 10 The technical solutions of the embodiments of the present invention are described clearly and completely. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments obtained by ordinary technicians in this field based on the described embodiments of the present invention belong to the scope of protection of the present invention.

[0016] Example 1: Figures 1 to 10 As shown, the present invention discloses an auxiliary slag removal system suitable for molten iron, and the auxiliary slag removal system includes a molten iron transfer vehicle 100, a slag driving mechanism 200 and a slag removal mechanism 300.

[0017] like Figures 2~4 As shown, the molten iron transfer vehicle 100 includes a transfer chassis 1 and a ladle support 2 arranged on the transfer chassis 1, a molten iron ladle 4 is rotatably connected to the ladle support 2, and a ladle turning mechanism 3 is arranged on one side of the molten iron ladle 4 to drive the molten iron ladle 4 to rotate along the ladle support 2. The ladle turning mechanism 3 can use a hydraulic system in the prior art to realize the function of driving the molten iron ladle 4 to rotate and dump along the ladle support 2. During the smelting process, the molten iron ladle 4 is controlled to rotate along the ladle support 2 to adjust to different smelting states, such as Figure 4 As shown, the ladle 4 is rotated to 40° and is in a slag removal preparation state.

[0018] like Figures 5 to 8As shown, the slag-driving mechanism 200 includes a lifting guide beam 5 correspondingly arranged above the molten iron ladle 4, and the lifting guide beam 5 includes two vertically corresponding ones. The upper and lower ends of one side of the lifting guide beam 5 are respectively provided with connecting end beams 51, and one end of the connecting end beam 51 is provided with an I-beam support beam 52, which can be connected to the skeleton of the steelmaking workshop through the I-beam support beam 52. The top of the two lifting guide beams 5 is provided with a guide wheel 53 for the traction wire 83 to be wound. At least one lifting slide 7 is slidably connected to the lifting guide beam 5, and at least one slag driving gun 6 is vertically arranged on the side of the lifting slide 7 away from the lifting guide beam 5; in a specific embodiment, the lifting slide 7 includes two correspondingly arranged up and down along the lifting guide beam 5, and the slag driving gun 6 includes two correspondingly connected to the two lifting slides 7 and arranged side by side; the lifting slide 7 is correspondingly arranged between the two lifting guide beams 5, and a guide slide groove is arranged on the inner side of the lifting guide beam 5, the lifting slide 7 includes a slide seat 71 and limit rollers 72 that are clamped in the guide slide groove are correspondingly arranged on the upper and lower sides of the slide seat 71, and the top of the lifting slide 7 is provided with a lifting ear 73 for connecting the traction wire 83, the lifting slide 7 is stably slidably connected between the two lifting guide beams 5 through the limit roller 72, and the slag driving gun 6 can be driven to perform the lifting action by driving the lifting slide 7 to lift and lower.

[0019] A lifting drive mechanism 8 is provided on the side of the lifting guide beam 5 different from the lifting slide 7, and the lifting drive mechanism 8 is transmission-connected with the lifting slide 7 and drives the lifting slide 7 to move up and down along the lifting guide beam 5. The lifting drive mechanism 8 includes a support angle seat 81 correspondingly connected to one side of the lifting guide beam 5, and a traction drive assembly 82 is provided on the support angle seat 81. A traction steel wire 83 is wound around the traction drive assembly 82, and the free end of the traction steel wire 83 is transmission-connected to the lifting slide 7 by passing through the guide wheel 53. The traction drive assembly 82 includes a support base plate 821 fixedly connected to the support angle seat 81, two first bearing seats 822 are arranged on the support base plate 821, a roller 823 is rotatably connected between the two first bearing seats 822, and a wire winding area 824 is arranged on the circumference of the roller 823; a transmission 826 is arranged at one end of the roller 823, and the roller 823 is connected to one transmission shaft of the transmission 826 through a coupling 825; a second bearing seat 827 is arranged at the other end of the transmission 826, and a motor drive shaft 828 of a traction drive motor 829 is installed in the second bearing seat 827, and the motor drive shaft 828 is connected to another transmission shaft of the transmission 826. When working, the traction drive motor 829 drives the roller 823 to rotate forward or backward to realize the retracting and releasing of the traction wire 83, so as to drive the lifting slide 7 to perform lifting action along the lifting guide beam 5, thereby realizing the lifting action of the slag driving gun 6. It should be noted that the top end of the slag driving gun 6 is connected to the nitrogen gas supply system through an air inlet pipe, and nitrogen is injected into the slag driving gun 6 through the nitrogen gas supply system to perform the slag driving operation.

[0020] The slag removal mechanism 300 includes a walking chassis 9 and a rotating support frame 10 correspondingly arranged on the walking chassis 9. A hydraulic oil station 11 and a hydraulic pump assembly 12 are arranged on the walking chassis 9. The hydraulic pump assembly 12 is connected to the driving cylinder 23 through a hydraulic oil circuit. A support plate 13 is arranged on the top of the rotating support frame 10. A rotating drive plate 14 is arranged on the support plate 13. A supporting beam frame 16 is correspondingly supported and connected to the rotating drive plate 14. A plurality of walking assemblies 15 are symmetrically arranged on the lower side of the supporting beam frame 16 along the rotating drive plate 14. The walking assemblies 15 are correspondingly supported on the supporting plate 13. This arrangement can stably support the supporting beam frame 16 on the supporting plate 13, and the supporting beam frame 16 can be driven by the rotating drive plate 14 to rotate along the supporting plate 13 to adjust the rotation angle.

[0021] A horizontal guide beam 17 and a sliding trolley 19 slidably connected to the horizontal guide beam 17 are arranged at the top of the support beam frame along its length direction. The sliding trolley 19 is connected to the rear end of the horizontal guide beam 17 through a traction mechanism 18. The sliding trolley 19 is driven forward or backward along the horizontal guide beam 17 by the forward movement mechanism to adjust the working position of the slag scraper arm 24. A support hinge seat 20 is arranged at the front end of the sliding trolley 19. The support hinge seat 20 is hinged to one corner of the triangular seat 21. A driving cylinder 23 hinged to the other corner of the triangular seat 21 is arranged at the rear end of the sliding trolley 19. The driving cylinder 23 drives the triangular seat 21 to adjust the pitch angle along the support hinge seat 20 through the hinge connection 22. A slag scraper arm 24 is provided at a front corner of the triangular seat 21. A downwardly bent portion is provided at the front end of the slag scraper arm 24, and a slag scraper claw 25 made of high-temperature resistant material is provided at the far end of the bent portion. The slag scraper claw 25 needs to be inserted into the molten iron slag for slag scraping when working. Therefore, a detachable connection method with the slag scraper arm 24 is adopted, and the slag scraper claw 25 can be replaced after being burned.

[0022] Embodiment 2: The present invention also discloses an auxiliary slag removal method for converter steelmaking, the auxiliary slag removal method comprising the following steps: (1) The molten iron transfer vehicle 100 carrying molten iron is driven to the desulfurization and slag-making station; after the desulfurization and slag-making operation is completed, the ladle turning mechanism 3 drives the molten iron ladle 4 to tilt 40° along the ladle support 2 toward the side of the slag removal mechanism 300 to complete the slag removal preparation.

[0023] (2) The traction drive motor 829 drives the drum 823 to rotate and unwind the traction wire 83 through the wire winding area. The traction wire 83 releases the restriction on the lifting slide 7. The lifting slide 7 moves downward along the lifting guide beam 5 under the action of its own weight, thereby driving the slag driving gun 6 to be inserted downward into the molten iron in the ladle 4 to a level of 100 mm. Then, nitrogen is injected into the slag driving gun 6 through the air supply system to drive the molten iron slag to the vicinity of the ladle mouth.

[0024] (3) Control the walking chassis 9 of the slag removal mechanism 300 to move to a specific position near the molten iron ladle 4, and then drive the support beam frame 16 and its upper structure to rotate along the support plate 13 to the corresponding direction of the molten iron ladle mouth by rotating the driving disk 14; then drive the sliding trolley 19 to move forward to the front end of the horizontal guide beam 17 by the traction mechanism 18, and switch from the slag removal arm retracted state 26 to the slag removal arm extended state 27, so that the slag removal arm 24 moves forward to the top of the molten iron ladle mouth; then, drive the tripod 21 and the slag removal arm 24 at the front end to tilt downward and rotate along the support hinge seat 20 by driving the oil cylinder 23 to the slag removal arm downward pressure state 28 to insert the molten iron slag to the side away from the molten iron ladle mouth; then, drive the sliding trolley 19 to move backward to the rear end of the horizontal guide beam 17 by the traction mechanism 18, and switch from the slag removal arm downward pressure state 28 to the slag removal arm retracted slag removal state 29, and the slag removal arm 24 can remove the molten iron slag from the molten iron ladle mouth during the retraction process; repeat the above steps until the molten iron slag at the molten iron ladle mouth is completely removed.

[0025] (4) Control the slag removal mechanism 300 to move away from the molten iron transfer vehicle 100 to complete the reset, control the traction drive assembly 82 to drive the lifting slide 7 to rise and drive the slag removal gun 6 to reset and stop supplying air, control the ladle turning mechanism 3 to drive the molten iron ladle 4 to return to the normal position, and control the molten iron transfer vehicle 100 to leave the desulfurization slag making station.

[0026] The above are preferred embodiments of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. An auxiliary slag removal system suitable for molten iron, characterized in that: The auxiliary slag removal system includes: A molten iron transfer vehicle (100), the molten iron transfer vehicle (100) comprising a transfer chassis (1) and a ladle support (2) arranged on the transfer chassis (1), a molten iron ladle (4) being rotatably connected to the ladle support (2), and a ladle turning mechanism (3) for driving the molten iron ladle (4) to rotate along the ladle support (2) being arranged on one side of the molten iron ladle (4); A slag-removing mechanism (200), the slag-removing mechanism (200) comprising a lifting guide beam (5) correspondingly arranged above the molten iron ladle (4), the lifting guide beam (5) being slidably connected to at least one lifting slide (7), the lifting slide (7) being vertically arranged on a side away from the lifting guide beam (5) and having at least one slag-removing gun (6); a lifting drive mechanism (8) being arranged on a side of the lifting guide beam (5) different from the lifting slide (7), the lifting drive mechanism (8) being transmission-connected to the lifting slide (7) and driving the lifting slide (7) to move up and down along the lifting guide beam (5); A slag scraping mechanism (300), the slag scraping mechanism (300) comprising a walking chassis (9) and a rotating support frame (10) correspondingly arranged on the walking chassis (9), a supporting beam frame (16) being rotatably arranged at the top end of the rotating support frame (10), a horizontal guide beam (17) and a sliding trolley (19) slidably connected to the horizontal guide beam (17) being arranged at the top end of the supporting beam frame (16) along its length direction, and the sliding trolley (19) being transmission-connected to the rear end of the horizontal guide beam (17) via a traction mechanism (18); the sliding trolley (19) A support hinge seat (20) is provided at the front end, the support hinge seat (20) is hingedly connected to one corner of the triangular seat (21), and a driving cylinder (23) is provided at the rear end of the sliding trolley (19) and is hingedly connected to the other corner of the triangular seat (21), and the driving cylinder (23) drives the triangular seat (21) to adjust the pitch angle along the support hinge seat (20); a slag scraping arm (24) is provided at one corner of the front side of the triangular seat (21), and a downwardly bent portion is provided at the front end of the slag scraping arm (24), and a slag scraping claw (25) made of high-temperature resistant material is provided at the far end of the bent portion.

2. The auxiliary slag removal system suitable for molten iron according to claim 1, characterized in that: The lifting slide (7) comprises two correspondingly arranged up and down along the lifting guide beam (5), and the slag driving gun (6) comprises two correspondingly connected to the two lifting slides (7) and arranged side by side.

3. The auxiliary slag removal system suitable for molten iron according to claim 2, characterized in that: The lifting guide beam (5) comprises two vertically corresponding ones, and the lifting slide (7) is correspondingly arranged between the two lifting guide beams (5); a guide slide groove is arranged inside the lifting guide beam (5), and upper and lower sides of the lifting slide (7) are correspondingly arranged with limit rollers (72) clamped in the guide slide groove; and a lifting lug (73) for connecting a traction wire (83) is arranged at the top of the lifting slide (7).

4. The auxiliary slag removal system suitable for molten iron according to claim 3, characterized in that: The top ends of the two lifting guide beams (5) are provided with guide wheels (53) for winding the traction wires (83); The lifting drive mechanism (8) comprises a support angle seat (81) correspondingly connected to one side of the lifting guide beam (5), a traction drive assembly (82) being arranged on the support angle seat (81), a traction steel wire (83) being wound around the traction drive assembly (82), and a free end of the traction steel wire (83) passing around a guide wheel (53) and being transmission-connected to the lifting slide (7).

5. The auxiliary slag removal system suitable for molten iron according to claim 4, characterized in that: The traction drive assembly (82) comprises a support base plate (821) fixedly connected to the support angle seat (81); two first bearing seats (822) are arranged on the support base plate (821) in opposition to each other; a roller (823) is rotatably connected between the two first bearing seats (822); a wire winding area (824) is arranged in the circumferential direction of the roller (823); a transmission (826) is arranged at one end of the roller (823), and the roller (823) is connected to one transmission shaft of the transmission (826) via a coupling (825); a second bearing seat (827) is arranged at the other end of the transmission (826), a motor drive shaft (828) of a traction drive motor (829) is sleeved in the second bearing seat (827), and the motor drive shaft (828) is transmission-connected to the other transmission shaft of the transmission (826).

6. The auxiliary slag removal system suitable for molten iron according to claim 1, characterized in that: The traveling chassis (9) is provided with a hydraulic oil station (11) and a hydraulic pump assembly (12), and the hydraulic pump assembly (12) is connected to the driving cylinder (23) via a hydraulic oil circuit.

7. The auxiliary slag removal system suitable for molten iron according to claim 6, characterized in that: A support plate (13) is arranged at the top of the rotating support frame (10), a rotating drive plate (14) is arranged on the supporting plate (13), and the supporting beam frame (16) is correspondingly supported on the rotating drive plate (14); a plurality of walking components (15) are symmetrically arranged on the lower side of the supporting beam frame (16) along the rotating drive plate (14), and the walking components (15) are correspondingly supported on the supporting plate (13).

8. An auxiliary slagging method for converter steelmaking, characterized in that: The auxiliary slag removal system according to any one of claims 1 to 7 is adopted, and the auxiliary slag removal method comprises the following steps: Step 1: driving the molten iron transfer vehicle (100) carrying molten iron to the desulfurization and slag making station; after the desulfurization and slag making operation is completed, the ladle turning mechanism (3) drives the molten iron ladle (4) to tilt 40° along the ladle support (2) toward the side of the slag removal mechanism (300), thereby completing the slag removal preparation; Step 2: The traction drive motor (829) drives the drum (823) to rotate and release the traction wire (83) through the wire winding area, and the traction wire (83) releases the restriction on the lifting slide (7). The lifting slide (7) moves downward along the lifting guide beam (5) under the action of its own weight, thereby driving the slag driving gun (6) to be inserted downward into the molten iron liquid level 100 mm in the molten iron ladle (4); then, nitrogen is injected into the slag driving gun (6) through the air supply system to drive the molten iron slag to the vicinity of the molten iron ladle mouth; Step 3: Control the walking chassis (9) of the slag removal mechanism (300) to move to a specific position near the ladle (4), and then drive the support beam frame (16) and its upper structure to rotate along the support plate (13) to the corresponding direction of the ladle opening by rotating the driving plate (14); then drive the sliding trolley (19) to move forward to the front end of the horizontal guide beam (17) by the traction mechanism (18), and switch from the slag removal arm retracted state (26) to the slag removal arm extended state (27), thereby moving the slag removal arm (24) forward to above the ladle opening; then, drive the oil cylinder (2 3) Extending and driving the triangular seat (21) and the slag removal arm (24) at the front end thereof to tilt downwardly along the support hinge seat (20) to the slag removal arm downward pressure state (28) and inserting the molten iron slag to the side away from the ladle opening; then, driving the sliding trolley (19) to move backward to the rear end of the horizontal guide beam (17) through the traction mechanism (18), and switching from the slag removal arm downward pressure state (28) to the slag removal arm retracted slag removal state (29), the slag removal arm (24) can remove the molten iron slag from the ladle opening during the retraction process; repeating the above steps until the molten iron slag at the ladle opening is completely removed; Step 4: Control the slag removal mechanism (300) to move away from the molten iron transfer vehicle (100) to complete the reset, control the traction drive assembly (82) to drive the lifting slide (7) to rise and drive the slag removal gun (6) to reset and stop supplying air, control the ladle turning mechanism (3) to drive the molten iron ladle (4) to return to the normal position, and control the molten iron transfer vehicle (100) to drive away from the desulfurization slag making station.

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