Accident molten steel treatment system and accident molten steel treatment method

Abstract

The present invention belongs to the field of steel production technology for treating accidental molten steel. The present invention also relates to a method for treating accidental molten steel. An accidental molten steel guide trough (17) is provided on the walking direction of the processing position ladle car (5), the processing position ladle car (5) is provided on the processing position access track (3), and an accidental molten steel collection pit (4) is provided under the ground between the processing position access track (3); an accidental molten steel collection pit (7) is provided under the ground outside the rotation position access track (6), a rotating trolley (8) is provided at one end of the rotation position access track (6), a rotating position ladle car (9) is provided on the rotating trolley (8), and a guide tube (10) is provided on the rotating trolley (8). The accidental molten steel treatment system and method of the present invention can reliably receive, guide and collect the accidental molten steel in a seamless manner throughout the entire process when the ladle is located at multiple processing positions, rotation positions and in the middle of the transportation walking path, thereby avoiding causing major accidents, and achieving the effects of automatic collection and convenient treatment.

Description

Technical Field

[0001] The present invention belongs to the technical field of steelmaking production, and more specifically, relates to an accident molten steel treatment system. The present invention also relates to an accident molten steel treatment method. Background Art

[0002] As a crucial container and transport vehicle for high-temperature molten steel, the ladle plays a crucial role in steelmaking, particularly during the refining process. Ladles are transported and moved on the ground using ladle carts. During the smelting or transportation process, molten steel can leak due to corrosion of the lining refractory material, bottom-blown air bricks, or sliding nozzles. If the leaked steel is not promptly and effectively directed into the "accident pit," the high-temperature molten steel can quickly damage processing and transportation equipment and buildings, potentially causing fires and explosions, and in severe cases, resulting in production stoppages and casualties. Therefore, achieving innovative breakthroughs in process equipment in the smelting industry requires the establishment of a seamless, safe, and reliable system for receiving, discharging, and collecting accidental molten steel at each ladle processing station and along all transport routes.

[0003] In the prior art, there is a technology named "A Ladle Transport Vehicle with Wheel Guide Device" and publication number "CN114871422A". This technology relates to the technical field of ladle transport equipment and proposes a ladle transport vehicle with a wheel guide device, including a traveling unit provided under the vehicle body, the traveling unit including a wheel and a guide device located on one side of the wheel, characterized in that the guide device includes a swing shaft and a guide wheel, the swing shaft is hingedly arranged on the vehicle body, the guide wheel is rotatably arranged on the swing shaft, the guide wheel is used to contact the upper side of the track, and also includes a pressure device, the pressure device includes a clamping seat and a drive mechanism, the middle part of the clamping seat is hingedly arranged on the vehicle body, and is located on one side of the clamping seat hinge shaft and connected to the drive mechanism, and the other side is used to press on the swing shaft. The above technical solution solves the problem in the prior art that the ladle transport side, due to the production and installation errors of the track and wheels, causes sliding friction between the wheel rim and the track, causes wear of the track and wheels, and affects the service life.

[0004] However, this technology does not involve the technical problems and technical solutions of the present application. Summary of the Invention

[0005] The technical problem to be solved by the present invention is: in view of the shortcomings of the existing technology, a system for treating accidental molten steel is provided, which has a simple structure and can reliably receive, export and collect accidental molten steel in a seamless manner throughout the entire process when the ladle is located at multiple processing positions, rotation positions and in the middle of the transportation path, thereby avoiding accidents, ensuring production safety, realizing automated collection and reducing the labor intensity of on-site personnel.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is:

[0007] The present invention discloses an accident molten steel processing system, comprising a processing position and a rotating position, wherein the processing position is provided with a processing position entry and exit track, a processing position accident molten steel collection pit is provided on the ground between the processing position entry and exit track, a processing position ladle car is arranged on the upper part of the processing position entry and exit track, and an accident molten steel guide groove is provided in the walking direction of the processing position ladle car; the rotating position comprises an entry and exit rotating position track, a rotating position ladle car is arranged on the upper part of the entry and exit rotating position track, and an accident molten steel collection pit for the rotating position ladle car when it is walking is provided on the outer side of the entry and exit rotating position track, a rotating trolley is provided at one end of the rotating position track, the rotating trolley carries the rotating position ladle car, a downwardly extending guide tube is provided on the rotating trolley, a lateral guide nozzle is provided on the rotating position ladle car, the rotating trolley is arranged in the rotating trolley foundation pit, an arc-shaped receiving flow groove is provided on the bottom surface of the rotating trolley foundation pit, the arc-shaped receiving flow groove is connected to the export flow groove, and the export flow groove is connected to the accident molten steel collection pit under the ground outside the rotating position entry and exit track.

[0008] The processing position includes processing position A and processing position B. Processing position A is provided with processing position entry and exit tracks, and a processing position accident molten steel collection pit is provided below the ground between the processing position tracks of processing position A, and a processing position ladle car is arranged on the upper part of the processing position tracks of processing position A; processing position B is provided with processing position entry and exit tracks, and a processing position accident molten steel collection pit is provided below the ground between the processing position tracks of processing position B, and a processing position ladle car is arranged on the upper part of the processing position tracks of processing position B.

[0009] The rotating ladle car on the rotating trolley can be moved to the processing position A for smelting treatment after the rotating trolley is rotated into position; and the rotating ladle car on the rotating trolley can also be moved to the processing position B for smelting treatment after the rotating trolley is rotated into position.

[0010] The rotary trolley foundation pit is a structure made of concrete, and the arc-shaped receiving flow channel below the bottom surface of the rotary trolley foundation pit is an annular structure.

[0011] The accident molten steel collection pit under the ground outside the rotating position entry and exit track is a long strip collection pit, so as to realize the full collection of accidental molten steel leaked from the ladle during the operation of the rotating position ladle car entering and exiting the rotating position and when the rotating position ladle car is on the rotating position trolley, and facilitate the lifting and processing of the factory overhead crane; the accident molten steel collection pit between the processing position entry and exit tracks of processing position A and processing position B is a sloped collection pit, so as to realize the full collection of accidental molten steel leaked from the ladle during the operation of the processing position ladle car entering and exiting the processing position and when the processing position ladle car is respectively smelting and processing at processing position A or processing position B, and when the rotating position ladle car rotates and runs to processing position A or processing position B for smelting and processing, and facilitate the lifting and processing of the factory overhead crane.

[0012] The processing position ladle car and the rotating position ladle car are respectively provided with refractory receiving plates. The refractory receiving plate of the processing position ladle car is connected to the accident molten steel diversion groove with a refractory material lining; the refractory receiving plate of the rotating position ladle car is connected to the diversion nozzle with a refractory material lining, and the inner wall of the diversion tube on the rotating trolley is a refractory layer.

[0013] The molten steel ladle on the processing position ladle car is transported on the track in and out of the processing position; or when it is driven to processing position A or processing position B for smelting, the accidental molten steel that leaks out can be received by the receiving tray and directly introduced into the accidental molten steel collection pit that can be hoisted and processed by the overhead crane in the plant through the accidental molten steel diversion groove 17 on the processing position ladle car;

[0014] The molten steel ladle on the rotating ladle car, when being transported on the track for entering and exiting the rotating position, or when accidental leakage occurs during the rotation of the rotating trolley on the rotating position, can be received by the receiving plate and discharged through the connecting guide nozzle on the upper side of the rotating ladle car. In the state of transportation on the track for entering and exiting the rotating position, the accidental steel discharged by the guide nozzle can be directly introduced into the accidental steel collection pit under the ground outside the rotating position track and can be hoisted and processed by the factory overhead crane; and in the state of being on the rotating trolley, the accidental steel discharged by the guide nozzle can also automatically be introduced into the accidental steel collection pit that can be hoisted and processed by the factory overhead crane through the guide tube on the rotating trolley, the arc-shaped receiving chute under the bottom of the rotating trolley pit, and the connecting guide chute.

[0015] After the molten steel ladle on the rotating ladle car is rotated and locked by the rotating trolley, any accidental molten steel that leaks out when it runs to the processing position A or the processing position B for smelting treatment can be received by the receiving plate and directly guided through the connecting diversion nozzle on the side of the rotating ladle car to the accidental molten steel collection pit set below the ground between the processing position tracks set in the processing position A and the processing position B, which can be lifted and processed by the factory overhead crane.

[0016] The present invention also relates to a method for treating accidental molten steel with simple and ingenious steps, which can seamlessly receive, guide and collect accidental molten steel while the ladle is at various processing positions, rotating positions and in the middle of the transport path, thereby avoiding causing serious accidents, ensuring production safety, and realizing automatic collection, thereby reducing the labor intensity of on-site personnel. The accidental molten steel treatment system has the following steps for treating accidental molten steel:

[0017] S1. When a ladle leaks from a rotating ladle car while it is in the rotating trolley position or during rotation, the molten steel is collected by the rotating ladle car's refractory receiving tray and directed through the ladle car's side guide nozzles to the guide tube on the rotating trolley. The guide tube then directs the molten steel into a curved emergency chute located below the bottom of the rotating trolley pit. The molten steel is then guided through a connecting guide chute into the molten steel collection pit outside the rotating track.

[0018] S2. When a ladle leaks from a rotating ladle car while it is being loaded onto a rotating trolley and then transported to processing station A or B for smelting, the accidental molten steel is collected by the refractory receiving tray on the rotating ladle car and directed through the side guide nozzles of the ladle car to the accidental molten steel collection pit between the entry and exit tracks of processing stations A and B, respectively.

[0019] S3. When the ladle leaks during the transfer process of the rotating ladle car on the rotary trolley, the accident molten steel is received by the refractory receiving plate 18 on the rotating ladle car and introduced into the accident molten steel collection pit through the side guide nozzle of the ladle car.

[0020] S4. When the ladle car that directly enters the processing position is undergoing smelting processing at processing position A or processing position B; and when a steel leakage accident occurs during the process of entering or exiting the processing position on the access track, the accident molten steel is received by the refractory receiving plate on the processing position ladle car, and is discharged to the accident molten steel collection pit between the processing position access tracks of processing position A and processing position B respectively through the accident molten steel diversion trough set in the direction of travel of the processing position ladle car.

[0021] The technical solution of the present invention is adopted, and the working principle and beneficial effects are as follows:

[0022] The accident molten steel treatment system and treatment method of the present invention are based on the fact that the molten steel ladle needs to be in different workstations during the transportation process and smelting process by the ladle car, and molten steel leakage accidents may occur during the transportation process and when being processed at different workstations, and it is necessary to have the ability to seamlessly receive, guide and collect the accident molten steel in different situations. To this end, the ladle car is first improved. Since the ladle cars at the processing position and the rotating position have different paths to enter different smelting workstations; in addition, the corresponding accident molten steel collection troughs and pits along the way are different, the structural designs of the rotating position ladle car and the processing position ladle car are also different. The processing position ladle car is provided with an accident molten steel diversion trough that is consistent with the travel direction of the ladle car; and the rotating position ladle car is provided with a side accident molten steel diversion nozzle that is perpendicular to the travel direction of the ladle car. The diversion trough and the diversion nozzle are both used to guide the leaked molten steel under different conditions, so that the high-temperature molten steel does not overflow or flow out, but enters the corresponding collection pit. Secondly, the structure of the rotating trolley and the foundation pit in which it rests has been specially improved. A downward-extending guide tube is installed on the trolley, and a curved receiving chute is installed in the foundation pit below the trolley. This curved receiving chute connects to a discharge chute, which in turn connects to an emergency molten steel collection pit outside the rotating station's inlet and outlet tracks. This way, if a molten steel leak occurs from the rotating ladle, the leaking steel is collected by the refractory receiving tray of the rotating ladle car and directed through the side guide nozzles on the ladle car to the guide tube on the trolley. The leaking steel is then directed from the guide tube into the curved emergency chute in the foundation pit below the trolley. The leaking steel then flows through the collection chute to the emergency molten steel collection pit outside the rotating station's track, where it can be hoisted and handled by the overhead crane. The circular structure of the curved emergency chute allows the trolley to continuously collect the leaking steel even during its counterclockwise rotation, preventing high-temperature molten steel from endangering the normal operation of the trolley and the rotating ladle car. When the ladle car on the rotating position is rotated by the rotating trolley and runs to processing position A or processing position B for smelting treatment, if the ladle leaks, the accident molten steel will be received by the refractory receiving tray on the rotating position ladle car and discharged through the side guide nozzle to the accident molten steel collection pit between the processing position tracks. In this way, the accident molten steel after the rotating position ladle car is rotated by the rotating trolley and runs to processing position A or processing position B can be collected. When the ladle car on the rotating trolley leaks while being transferred on the rotating position entry and exit tracks, the accident molten steel will be received by the refractory receiving tray on the rotating position ladle car and discharged through the side guide nozzle to the accident molten steel collection pit under the ground outside the rotating position entry and exit tracks. When a ladle car leaks steel while being transferred on the access tracks of either processing station A or processing station B, the accidental molten steel is received by the refractory receiving tray on the ladle car and directed through the diversion trough on the ladle car in the direction of travel to the accidental molten steel collection pit between the processing station tracks. This does not affect the continued operation of the ladle car and can automatically collect the accidental molten steel.In short, this invention enables the ladle car to seamlessly and reliably receive, remove, and collect accidental molten steel throughout the entire process, regardless of the complex smelting and transfer station or transportation process, effectively ensuring the safety and convenience of on-site operations. This represents a breakthrough in the "high quality, high efficiency, and high profitability" of core process equipment in the high-temperature liquid smelting industry, with significant overall benefits and high promotional value. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The following is a brief description of the contents and symbols in the drawings of this specification:

[0024] Figure 1 This is a general plan view of the accident molten steel treatment system according to the present invention;

[0025] Figure 2 This is a schematic elevation view of the rotating ladle car receiving and discharging molten steel;

[0026] Figure 3 This is a schematic elevation view of the receiving, discharging and collecting of accidental molten steel when the ladle car is on the rotating platform;

[0027] Figure 4 This is a plan view of the molten steel outlet chute under the bottom of the rotary trolley foundation pit;

[0028] Figure 5 It is a schematic diagram of the discharge and collection of molten steel when the rotating ladle car moves forward or backward to the processing position A and the processing position B after being rotated by the rotating trolley;

[0029] Figure 6 This is a schematic diagram of the side discharge and collection of accident molten steel when the rotating ladle car is transported on the inlet and outlet tracks;

[0030] The marks in the attached drawings are as follows: 1. Processing position; 2. Rotating position; 3. Processing position inlet and outlet track; 4. Accident molten steel collection pit between the processing position tracks; 5. Processing position ladle car; 6. Rotating position inlet and outlet track; 7. Accident molten steel collection pit outside the rotating position inlet and outlet track; 8. Rotating trolley; 9. Rotating position ladle car; 10. Guide tube on the rotating trolley; 11. Side guide nozzle of accident molten steel on the rotating position ladle car; 12. Rotating trolley foundation pit; 13. Arc-shaped receiving flow channel; 14. Lead-out flow channel; 15. Processing position A; 16. Processing position B; 17. Accident molten steel guide channel on the processing position ladle car; 18. Refractory receiving tray; 19. Ladle (ladle). DETAILED DESCRIPTION

[0031] The following describes the embodiments with reference to the accompanying drawings to further explain in detail the specific embodiments of the present invention, such as the shapes, structures, mutual positions and connection relationships between the various components involved, the functions and working principles of the various components.

[0032] As attached Figure 1 -Attached Figure 6As shown, the present invention is an accident molten steel processing system, including a processing position 1 and a rotating position 2. The processing position 1 is provided with a processing position entry and exit track 3, and a processing position accident molten steel collecting pit 4 is provided on the ground between the processing position entry and exit track 3. A processing position ladle car 5 is arranged on the upper part of the processing position entry and exit track 3, and an accident molten steel guide groove 17 is provided in the walking direction of the processing position ladle car 5; the rotating position 2 includes an entry and exit rotating position track 6, a rotating position ladle car 9 is arranged on the upper part of the entry and exit rotating position track 6, and a rotating position ladle car 9 is provided on the outer side of the entry and exit rotating position track 6 when the rotating position ladle car walks. The accident molten steel collection pit 7 is designed to be a rotating trolley 8, mounted at one end of the rotating access track 6. The trolley 8 carries a rotating ladle car 9, and is equipped with a downwardly extending guide tube 10. The rotating ladle car 9 is also equipped with a side guide nozzle 11. The trolley 8 is positioned within a rotating trolley pit 12. The bottom of the rotating trolley pit 12 is provided with an arc-shaped receiving chute 13, which connects to a discharge chute 14. This discharge chute 14 connects to the accident molten steel collection pit 7 outside the rotating access track 6. The above structure addresses the shortcomings of the existing technology and proposes an improved technical solution. Because ladle cars need to be in different positions during transportation, and molten steel leakage accidents may occur during transportation and at different workstations, it is necessary to have a seamless system for receiving, discharging, and collecting accident molten steel in various situations. To this end, the ladle car is first improved, with the rotating ladle car and the processing ladle car adopting different structures and accident molten steel discharge methods. The processing position ladle car 5 is provided with an accident molten steel diversion trough 17 in its traveling direction; and the rotating position ladle car 9 is provided with a side diversion nozzle 11 in the vertical direction of its traveling. The diversion trough and the diversion nozzle are respectively used to guide the leaked molten steel so that the high-temperature molten steel will not overflow or flow outward, but will enter the corresponding collection pit seamlessly and constrainedly. Secondly, the rotating trolley part is improved, and a downward extending diversion cylinder 10 is provided on the rotating trolley 8. At the same time, the rotating trolley concrete foundation pit 12 where the rotating trolley 8 is located is improved, and an arc-shaped receiving flow trough 13 is provided under the bottom surface of the rotating trolley foundation pit 12. The arc-shaped receiving flow trough 13 is connected to the outlet flow trough 14, and the outlet flow trough 14 is connected to the accident molten steel collection pit 7 when the rotating position ladle car is traveling under the ground outside the rotating position entry and exit track. In this way, when the rotating ladle car 9 is on the rotating trolley or in the process of rotating and the ladle leaks molten steel, the accident molten steel is received by the refractory receiving plate 18 of the rotating ladle car 9 and is discharged to the guide tube 10 on the rotating trolley 8 through the side guide nozzle 11 of the ladle car; the accident molten steel is then introduced into the arc-shaped accident flow channel 13 under the bottom surface of the rotating trolley foundation pit 12 below the rotating trolley 8 by the guide tube 10 with a refractory material lined on the inner wall; the arc-shaped receiving flow channel 13 is connected to the outlet flow channel 14, and the outlet flow channel 14 is connected to the accident molten steel collection pit 7 that guides the long rotating ladle car into the outer side of the rotating track when it is moving.The arc-shaped accident flow channel 13 is an arc-shaped structure, so the rotating trolley 8 can continuously collect the accident molten steel during the process of rotating 90° counterclockwise, and will not affect the normal operation of the rotating trolley and the rotating ladle car. It does not affect the continuous movement of the ladle car, and can automatically and continuously collect the accident molten steel. In short, the system and method of the invention can reliably collect the accident molten steel in a continuous and connected manner throughout the entire process no matter which work station or link the ladle car is in, effectively ensuring the safety and convenience of on-site operations. The accident molten steel processing system described in the present invention has an ingenious and simple structure, and can reliably receive, export and collect the accident molten steel in a continuous and connected manner throughout the entire process when the ladle is located at each processing position, rotating position and during the rotation process, as well as during the transportation walking path, avoiding causing serious accidents, ensuring production safety, and realizing automated collection, reducing the labor intensity of on-site personnel.

[0033] The processing position 1 includes processing position A15 and processing position B16. Processing position A15 is provided with a processing position access track 3. A processing position accident molten steel collection pit 4 is provided under the ground between the processing position access track 3 of processing position A15, and a processing position ladle car 5 is arranged on the upper part of the processing position access track 3 of processing position A15; processing position B16 is provided with a processing position access track 3. A processing position accident molten steel collection pit 4 is provided under the ground between the processing position access track 3 of processing position B16, and a processing position ladle car 5 is arranged on the upper part of the processing position access track 3 of processing position B16. In response to the need for innovative breakthroughs in core process equipment, the above structure places the rotating station between processing stations A15 and B16. This allows the rotating ladle car 9 to be easily and reliably driven into processing station A15 or backed into processing station B16 after being rotated 90° counterclockwise and locked. This solves the transportation requirement for the molten steel ladle 19 on the rotating ladle car to enter and exit the two smelting stations, processing stations A15 and B16, respectively, at different entry and exit angles. Processing stations A15 and B16 are each equipped with the same sloped, inter-track accident molten steel collection pit 4, which is used to collect accidental molten steel during the entry and exit of the ladle cars at the two processing stations; when the ladle cars at processing stations A and B are smelting at the processing stations; and when the rotating trolley is rotated 90° counterclockwise and locked and the rotating ladle car on it is driven into processing stations A15 or B16 for smelting, and in the event of a ladle leak.

[0034] The rotating ladle car 9 on the rotating trolley 8 can be moved to the processing position A15 for smelting treatment after the rotating trolley 8 rotates into position; and the rotating ladle car 9 on the rotating trolley 8 can also be moved to the processing position B16 for smelting treatment after the rotating trolley 8 rotates into position. The above-mentioned process equipment innovation has different structural design requirements for the rotating ladle car 9 and the processing position ladle car 5. The paths of the smelting treatment positions are different depending on whether the ladle car can enter and exit directly or enter and exit the processing position A15 or the processing position B16 after the rotating trolley rotates at an angle; and the corresponding differences in the layout of the accident molten steel discharge and collection pit. The guide nozzle of the accident molten steel of the rotating ladle car 9 is set on the side of the ladle car; the guide trough of the accident molten steel of the processing position ladle car 5 is set in the walking direction of the ladle car. Under the conditions that the ladle cars at the rotating and processing positions can conveniently and reliably enter and exit the processing positions for smelting, and that the accidental molten steel leaked from all ladles in various states can be reliably discharged and collected, the number of processing positions A15, processing position B16 and rotating positions can be set in multiple ways, and the rotation angles can also be selected in multiple ways, that is, they can be flexibly set according to the needs of different process equipment, plant layout and other environments.

[0035] The rotating trolley pit 12 is constructed of concrete, and the arc-shaped receiving chute 13 below the bottom of the pit is annular. This structure ensures that the rotating trolley 8 can continuously collect accidental molten steel while rotating the ladle car 9. The rotating ladle car 9 includes a side guide nozzle 11 for the accidental molten steel.

[0036] The accident molten steel collection pit 7 for the ladle car running on the ground outside the rotating position entrance and exit tracks is a long strip collection pit, which can simultaneously collect the accident molten steel during the operation of the ladle car on the track entering and exiting the rotating position; and when the ladle car is on the rotating trolley, and facilitate the lifting and processing of the factory overhead crane. The accident molten steel collection pit 4 between the processing position entrance and exit tracks of processing position A15 and processing position B16 is a sloped collection pit, which can simultaneously collect the accident molten steel during the operation of the ladle car entering and exiting the processing position and when smelting is being carried out in processing position A15 or processing position B16; and when the ladle car is rotated by the rotating trolley and runs to processing position A15 or processing position B16 for smelting, and facilitate the lifting and processing of the factory overhead crane.

[0037] The ladle car 5 at the processing position and the ladle car 9 at the rotating position are each equipped with a refractory receiving pan 18. The refractory receiving pan 18 of the ladle car 5 at the processing position communicates with a refractory-lined molten steel diversion channel 17; the refractory receiving pan 18 of the ladle car 9 at the rotating position communicates with a refractory-lined diversion nozzle 11. The inner wall of the diversion tube 10 on the rotating trolley 8 is a refractory layer. This structure ensures that if a ladle leaks, the high-temperature accident molten steel will not burn the ladle car or the rotating trolley, and allows the accident molten steel to be seamlessly and smoothly channeled into various accident molten steel collection pits throughout the entire process.

[0038] The molten steel ladle 19 on the processing position ladle car 5 is transported on the track 3 entering and exiting the processing position; or when it is driven to the processing position A15 or the processing position B16 for smelting, the accidental molten steel that leaks out can be received by the receiving plate 18 and introduced into the accidental molten steel collection pit 4 that can be hoisted and processed by the plant overhead crane through the accidental molten steel guide trough 17 on the processing position ladle car 5;

[0039] The molten steel ladle 19 on the rotating position ladle car 9 is transported on the track 6 for entering and exiting the rotating position; or when the accidental molten steel leaks out during the rotation of the rotating trolley 8 when it is driven to the rotating position, it can be received by the receiving plate 18 and introduced into the accidental molten steel collection pit 7 when the rotating position ladle car 9 is traveling and can be lifted and processed by the plant crane under the ground outside the track for entering and exiting the rotating position through the connecting guide nozzle 11 on the side surface of the rotating position ladle car 9; or when it is on the rotating trolley 8, the accidental molten steel can be introduced into the accidental molten steel collection pit 7 when the rotating position ladle car is traveling and can be lifted and processed by the plant crane through the guide tube 10 on the rotating trolley 8, the arc-shaped receiving flow channel 13 under the bottom surface of the rotating trolley foundation pit 12, and the connecting guide flow channel 14.

[0040] After the ladle 19 on the rotating ladle car 9 is rotated by the rotating trolley 8, any accidental molten steel that leaks out when it runs to the processing position A15 or B16 for smelting treatment can be received by the receiving plate 18 and directly discharged through the connecting diversion nozzle 11 on the side of the rotating ladle car 9 to the processing position accident molten steel collection pit 4 set below the ground between the processing position entry and exit tracks 3 set at the processing position A15 or the processing position B16, which can be lifted and processed by the factory overhead crane.

[0041] The present invention also relates to a method for treating accidental molten steel with simple and ingenious steps, which can seamlessly receive, guide and collect accidental molten steel while the ladle is at various processing positions, rotating positions and in the middle of the transport path, thereby avoiding causing serious accidents, ensuring production safety, and realizing automatic collection, thereby reducing the labor intensity of on-site personnel. The accidental molten steel treatment system has the following steps for treating accidental molten steel:

[0042] S1. When a ladle leaks from the rotating ladle car 9 while it is in the position of the trolley 8 or during rotation, the accidental molten steel is received by the refractory receiving plate 18 of the rotating ladle car 9 and directed through the ladle car's side guide nozzle 11 to the guide tube 10 on the trolley 8. The accidental molten steel is then directed by the guide tube 10 into the arc-shaped accident chute 13 below the bottom of the trolley pit 12 below the trolley 8. The accidental molten steel is then guided through the connecting guide chute 14 into the accidental molten steel collection pit 7 outside the rotating track during the ladle car's travel.

[0043] S2. When the ladle car 9 in the rotating position is loaded onto the rotating trolley 8 and rotated by the trolley before reaching processing position A15 or processing position B16, and a ladle leak occurs, the accidental molten steel is received by the refractory receiving tray 18 on the rotating ladle car 9 and directed through the side guide nozzle 11 of the ladle car to the accidental molten steel collection pit 4 between the processing position entrance and exit tracks of processing position A15 or processing position B16, respectively.

[0044] S3. When the ladle leaks from the rotating ladle car 9 on the rotary trolley 8 during the transfer process of moving in and out of the rotary trolley 8, the accident molten steel is received by the material receiving plate 18 on the rotating ladle car 9 and is introduced into the accident molten steel collection pit 7 when the rotating ladle car is moving through the side guide nozzle 11 of the ladle car.

[0045] S4. When the ladle car 5 that directly enters the processing position is being processed at processing position A15 or processing position B16; and when a steel leakage accident occurs during the transportation process of entering or leaving the processing position on the track 3, the accident molten steel is received by the refractory receiving plate 18 on the processing position ladle car 5, and is respectively discharged to the accident molten steel collection pit 4 between the processing position entry and exit tracks of processing position A15 and processing position B16 through the accident molten steel diversion groove 17 provided in the moving direction of the processing position ladle car 5.

[0046] The accident molten steel treatment system and treatment method described in the present invention are because the ladle car needs to be in different positions during transportation, and molten steel leakage accidents may occur during transportation and at different workstations. It is necessary to have the ability to seamlessly receive, export and collect the accident molten steel in different situations. To this end, the ladle car is first improved, and the rotating position ladle car and the processing position ladle car adopt different structures and accident molten steel export forms. The processing position ladle car 5 is provided with an accident molten steel guide groove 17 in its travel direction; and the rotating position ladle car 9 is provided with a side guide nozzle 11 in the vertical direction of its travel. The guide groove and the guide nozzle are respectively used to guide the leaked molten steel, so that the high-temperature molten steel will not overflow or flow out, but will enter the corresponding collection pit seamlessly and constrainedly. Secondly, the rotating trolley part is improved, and a downward extending guide tube 10 is set on the rotating trolley 8. At the same time, the rotating trolley concrete foundation pit 12 where the rotating trolley 8 is located is improved, and an arc-shaped receiving flow channel 13 is set under the bottom surface of the rotating trolley foundation pit 12. The arc-shaped receiving flow channel 13 is connected to the outlet flow channel 14, and the outlet flow channel 14 is connected to the accident molten steel collection pit 7 under the ground outside the rotating position entry and exit track when the rotating position ladle car is moving. In this way, when a ladle car 9 on the rotating trolley or during rotation experiences a leak, the leaked molten steel is collected by the refractory receiving tray 18 of the rotating trolley 9 and directed through the side guide nozzle 11 of the ladle car to the guide tube 10 on the rotating trolley 8. The leaked steel is then directed by the guide tube 10, lined with refractory material, into a curved emergency chute 13 beneath the bottom of the trolley pit 12 below the rotating trolley 8. This curved receiving chute 13 connects to a discharge chute 14, which in turn connects to a long, narrow collection pit for the rotating trolley as it travels. The circular arc-shaped structure of the curved emergency chute 13 allows the rotating trolley 8 to continuously collect the leaked steel during its 90° counterclockwise rotation, without disrupting the normal operation of the rotating trolley and the rotating ladle car. This allows for automated and continuous collection of leaked steel without disrupting the continuous operation of the ladle car. In short, the system and method of the invention can reliably collect accident molten steel in a continuous and connected manner throughout the entire process, no matter which workstation or link the ladle car is in, effectively ensuring the safety and convenience of on-site operations.

[0047] The present invention is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the present invention is not limited to the above-mentioned method. As long as various improvements are made using the method concept and technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the scope of protection of the present invention. At the same time, its feature is that it is not limited to high-temperature liquid steel, and the present invention is also applicable to other similar types of high-temperature liquid metals.

Claims

1. An accident molten steel treatment system, characterized by: The invention comprises a processing position (1) and a rotating position (2), wherein the processing position (1) is provided with a processing position entry and exit track (3), a processing position accident molten steel collection pit (4) is provided on the ground between the processing position entry and exit track (3), a processing position ladle car (5) is arranged on the upper part of the processing position entry and exit track (3), and an accident molten steel guide groove (17) is provided in the walking direction of the processing position ladle car (5); the rotating position (2) comprises an entry and exit rotating position track (6), a rotating position ladle car (9) is arranged on the upper part of the entry and exit rotating position track (6), and an accident molten steel collection pit (7) is provided on the outer ground of the entry and exit rotating position track (6) when the ladle car is walking on the rotating position track. ), a rotating trolley (8) is provided at one end of the rotating track (6), the rotating trolley (8) carries the rotating ladle car (9), a downwardly extending guide tube (10) is provided on the rotating trolley (8), a lateral guide nozzle (11) is provided on the rotating ladle car (9), the rotating trolley (8) is arranged in the rotating trolley foundation pit (12), an arc-shaped receiving flow channel (13) is provided on the bottom surface of the rotating trolley foundation pit (12), the arc-shaped receiving flow channel (13) is connected to the outlet flow channel (14), and the outlet flow channel (14) is connected to the accident molten steel collection pit (7) when the ladle car is walking on the rotating position inlet and outlet track outside the rotating track (6); The processing position (1) includes a processing position A (15) and a processing position B (16), wherein the processing position A (15) is provided with a processing position entry and exit track (3), a processing position accident molten steel collection pit (4) is provided below the ground between the processing position tracks (3) of the processing position A (15), and a processing position ladle car (5) is arranged above the processing position tracks (3) of the processing position A (15); the processing position B (16) is provided with a processing position entry and exit track (3), a processing position accident molten steel collection pit (4) is provided below the ground between the processing position tracks (3) of the processing position B (16), and a processing position ladle car (5) is arranged above the processing position tracks (3) of the processing position B (16); The rotating trolley foundation pit (12) is a structure made of concrete, and the arc-shaped receiving flow channel (13) below the bottom surface of the rotating trolley foundation pit (12) is an annular structure; The accident molten steel collection pit (7) for the rotating ladle car when it is running under the ground outside the rotating position inlet and outlet track is a long strip collection pit, so as to realize the full collection of accident molten steel during the operation of the rotating ladle car in and out of the rotating position and facilitate the lifting and processing of the factory overhead crane; the accident molten steel collection pit (4) between the processing position inlet and outlet tracks of processing position A (15) and processing position B (16) is a slope collection pit, so as to realize the full collection of accident molten steel during the operation of the processing position ladle car in and out of the processing position and facilitate the lifting and processing of the factory overhead crane; The processing position ladle car (5) and the rotating position ladle car (9) are respectively provided with a refractory receiving plate (18), the refractory receiving plate (18) of the processing position ladle car (5) is connected to the accident molten steel guide groove (17) with a refractory material lining; the refractory receiving plate (18) of the rotating position ladle car (9) is connected to the guide nozzle (11) with a refractory material lining, and the inner wall of the guide tube (10) on the rotating trolley (8) is a refractory layer.

2. The accident molten steel treatment system according to claim 1, characterized in that: The rotating ladle car (9) on the rotating trolley (8) can be moved to the processing position A (15) for smelting after the rotating trolley (8) is rotated to the position; and the rotating ladle car (9) on the rotating trolley (8) can also be moved to the processing position B (16) for smelting after the rotating trolley (8) is rotated to the position.

3. The accident molten steel treatment system according to claim 1 or 2, characterized in that: The molten steel ladle (19) on the processing position ladle car (5) can be received by the receiving plate (18) when it is transported on the track (3) for entering and exiting the processing position; or when it is driven to the processing position A (15) or the processing position B (16) for smelting and leaks out of the accident steel, and is introduced into the accident steel collection pit (4) where it can be hoisted and processed by the plant crane through the accident steel guide trough (17) on the processing position ladle car (5).

4. The accident molten steel treatment system according to claim 2, characterized in that: The molten steel ladle (19) on the rotating position ladle car (9) can be received by the receiving plate (18) when being transported on the track (6) for entering and exiting the rotating position, or when the accidental molten steel leaks out during the rotation of the rotating trolley (8) when it is driven to the rotating position, and can be introduced into the accidental molten steel collection pit (7) under the ground outside the track for entering and exiting the rotating position and can be hoisted and processed by the factory crane when the rotating position ladle car is moving through the connecting guide nozzle (11) on the upper side of the rotating position ladle car (9); or when it is on the rotating trolley (8), the accidental molten steel can be introduced into the accidental molten steel collection pit (7) outside the track for entering and exiting the rotating position and can be hoisted and processed by the factory crane when the rotating position ladle car is moving through the guide tube (10) on the rotating trolley (8), the arc-shaped receiving flow channel (13) under the bottom surface of the rotating trolley foundation pit (12), and the connecting guide flow channel (14) when it is on the rotating trolley (8).

5. The accident molten steel treatment system according to claim 1 or 2, characterized in that: After the molten steel ladle (19) on the rotating ladle car (9) is rotated by the rotating trolley (8), or when it is transported to the processing position A (15) or the processing position B (16) for processing, any accidental molten steel that leaks out can be received by the receiving plate (18) and directly discharged through the connecting guide nozzle (11) on the upper side of the rotating ladle car (9) to the processing position accident molten steel collection pit (4) set below the ground between the processing position access track (3) set at the processing position A (15) and the processing position B (16) and can be hoisted and processed by the factory overhead crane.

6. The method for treating an accident molten steel treatment system according to any one of claims 1 to 5, characterized in that: The accident molten steel treatment system of the accident molten steel treatment steps are: S1. When the ladle leaks when the rotating ladle car (9) is at the rotating trolley (8) or is rotating, the accident molten steel is received by the refractory receiving plate (18) of the rotating ladle car (9) and is guided to the guide tube (10) on the rotating trolley (8) through the side guide nozzle (11) of the ladle car; the accident molten steel is then guided by the guide tube (10) into the arc-shaped accident flow channel (13) below the bottom surface of the rotating trolley pit (12) below the rotating trolley (8); the accident molten steel is then guided through the connecting guide channel (14) into the accident molten steel collection pit (7) when the rotating ladle car is moving outside the rotating position entry and exit track; S2. When the rotating ladle car (9) is driven onto the rotating trolley (8) and the trolley rotates and runs to the processing position A (15) or the processing position B (16), and the molten steel leaks from the ladle, the accident molten steel is received by the refractory receiving plate (18) on the rotating ladle car (9) and is respectively discharged to the accident molten steel collection pit (4) between the processing position entrance and exit tracks of the processing position A (15) and the processing position B (16) through the side guide nozzle (11) of the ladle car; S3. When the ladle leaks from the rotating ladle car (9) on the rotating trolley (8) during the transfer process of entering or leaving the rotating trolley (8), the accident molten steel is received by the material receiving plate (18) on the rotating ladle car (9) and is introduced into the accident molten steel collection pit (7) when the ladle car is moving on the rotating position entry and exit track through the side guide nozzle (11) of the ladle car; S4. When the ladle car (5) that directly enters the processing position is being processed at processing position A (15) or processing position B (16); or when a steel leakage accident occurs during the process of entering or leaving the processing position track (3), the accident molten steel is received by the refractory receiving plate (18) on the processing position ladle car (5), and is respectively discharged to the accident molten steel collection pit (4) between the processing position entry and exit tracks of processing position A (15) and processing position B (16) through the accident molten steel diversion groove (17) provided in the direction of travel of the processing position ladle car (5).

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