Ladle car, hot metal transfer system and automatic slag unloading method

Abstract

The present application relates to a molten iron tank car, a molten iron transfer transportation system and an automatic slag unloading method. The molten iron tank car comprises a base, a molten iron container and a molten slag container arranged on the base; the bottom wall of the molten slag container comprises an openable movable wall panel, and when the movable wall panel is in an open state, a slag unloading passage is formed between the molten slag container and the space below the molten iron tank car. The molten iron transfer transportation system comprises a transfer track, a slag unloading station and the molten iron tank car; the transfer track is connected between an iron smelting position and a steel smelting position, the molten iron tank car is arranged on the transfer track and can move between the iron smelting position and the steel smelting position along the transfer track; the slag unloading station comprises a slag pool, and the slag pool is arranged at a first specified position on the transfer track; when the molten iron tank car stops at the first specified position, the slag pool is located below the molten slag container. When the molten slag in the molten slag container is unloaded, the molten iron tank car only needs to stop at the first specified position once, and the slag unloading passage is opened.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of steel smelting, and particularly relates to a hot metal ladle car, a hot metal transfer and transportation system and an automatic slag unloading method. BACKGROUND

[0002] In the field of steel smelting industry, hot metal deslagging and molten iron deslagging are key links for improving smelting quality. Modern industry has higher and higher requirements for steel quality, and requires steel to have high cleanliness and high strength. Deslagging is one of the key technologies and important starting points for clean steel production platform.

[0003] The general process of hot metal or molten iron deslagging is as follows: as shown in FIGS. 1 and 2, when the hot metal ladle car 5 moves from the iron smelting position to the steel smelting position, the iron slag in the hot metal container 6 on the hot metal ladle car 5 is taken out and transferred and placed into the iron slag container 7. When the iron slag container 7 is full of iron slag, the iron slag container 7 full of iron slag needs to be replaced and transported to a specific location for dumping treatment. Figure 1 Figure 2 In the prior art, whether the iron slag container 7 needs to be replaced is mainly determined by manual operation, and whether the iron slag container 7 is full is observed by manual visual observation at intervals. When the iron slag container 7 is replaced, the replacement mainly relies on automobile transfer and crane transfer, and the crane and the automobile need to be operated under the on-site command. The above-mentioned method may cause the following technical problems in practice:

[0004] Firstly, on the one hand, the visual observation is limited by the experience of the observer, and on the other hand, the amount of iron slag removed in different deslagging processes is quite different. When the amount of removed iron slag is large, the iron slag container 7 may be full after 3 times of iron slag removal, and when the amount of removed iron slag is small, the same iron slag container 7 may be full after 5 times of iron slag removal. Due to the above subjective and objective reasons, the accuracy of the determination of whether the iron slag container 7 is full by manual visual observation and experience is not high. When an error occurs, the iron slag container 7 may be full when the next deslagging process is being performed, so that the deslagging process has to be temporarily interrupted, the new iron slag container 7 has to be replaced, and the production rhythm is disturbed and the production efficiency is reduced.

[0005] Secondly, the process of replacing the iron slag container 7 by the automobile and the crane is complicated, and multiple parties need to cooperate. If the cooperation is not good, a great safety hazard may be caused.

[0006] Thirdly, the process of replacing the iron slag container 7 by the automobile and the crane is complicated, and multiple parties need to cooperate. If the cooperation is not good, a great safety hazard may be caused.

[0007] ​Moreover, based on the above method, a dilemma will also be faced. Specifically, the capacity of a single ladle (molten iron container 6) is 150-350 tons, and the required amount of slag removal is 1-4 tons; for example, for a 200-ton ladle, the removed slag often exceeds 2 tons. In practice, if the capacity of the iron slag container 7 is set to be small, the iron slag accumulated once or twice will fill the iron slag container 7 and the iron slag container 7 has to be replaced, which requires frequent replacement of the iron slag container 7 in actual production, thereby increasing the workload and the occupation of human and material resources; if the frequency of replacing the iron slag container 7 is expected to be reduced, the iron slag container 7 is set to be large, and the volume and weight of the iron slag container 7 will be large accordingly, which is inconvenient for the transportation, replacement and dumping of the iron slag container 7. SUMMARY

[0008] The present application provides a molten iron ladle car, a molten iron transfer and transportation system and an automatic slag removal method to solve at least one technical problem in the prior art.

[0009] The molten iron ladle car is used to move on a transfer track connecting a molten iron smelting position and a molten iron steelmaking position, and comprises a base, a molten iron container and an iron slag container arranged on the base; a bottom wall of the iron slag container comprises an openable movable wall panel, and when the movable wall panel is in an open state, a slag removal passage is formed between the iron slag container and a space below the molten iron ladle car.

[0010] The movable wall panel can be horizontally translated and opened to form the slag removal passage by horizontal translation; or the movable wall panel can be horizontally rotated and opened to form the slag removal passage by horizontal rotation; or the movable wall panel can be upwardly rotated and opened to form the slag removal passage by upward rotation; or the movable wall panel can be downwardly rotated and opened to form the slag removal passage by downward rotation.

[0011] The iron slag container and the base are in an integral structure; or the iron slag container and the base are in a split structure, and a region on the base corresponding to the bottom wall of the iron slag container is provided with a through hole.

[0012] The molten iron ladle car further comprises a driving mechanism connected with the movable wall panel to drive the movable wall panel to translate or rotate downward.

[0013] The driving mechanism is a hydraulic cylinder, one end of the hydraulic cylinder is rotatably connected with the base, and the other end is rotatably connected with the lower side of the movable wall panel.

[0014] The molten iron tank car further comprises a supporting mechanism, one end of the supporting mechanism is connected to the lower side of the movable wall plate, and the other end is connected to the base.

[0015] The molten iron transfer and transport system provided by the application comprises a transfer track, a slag unloading station and the molten iron tank car described above.

[0016] The molten iron transfer and transport system further comprises a first detection device, which is used to detect whether the molten iron tank car moves to the first set position.

[0017] The molten iron transfer and transport system further comprises an automatic slag salvaging device, which comprises a slag salvaging station.

[0018] The molten iron transfer and transport system further comprises an iron slag amount detection device, which is arranged between the first set position and the iron smelting position.

[0019] The iron slag amount detection device collects a first parameter and a second parameter to determine the amount of iron slag stored in the iron slag container according to the first parameter and the second parameter.

[0020] The molten iron transfer and transport system further comprises a third detection device, which is used to detect whether the amount of iron slag remaining in the iron slag container exceeds a set value.

[0021] The automatic slag unloading method provided by the application comprises the following steps.

[0022] The iron slag amount detection step is to detect the amount of iron slag stored in the iron slag container on the molten iron tank car, and the subsequent entry step is executed when the amount of iron slag stored in the iron slag container exceeds a set value;

[0023] The entry step is to control the molten iron tank car to enter the slag unloading station and stop at a first set position.

[0024] The slag unloading step is to control the movable wall plate at the bottom of the iron slag container to open and form a slag unloading channel, so that the iron slag stored in the iron slag container enters the slag pool below through the slag unloading channel.

[0025] The departure step is to control the movable wall plate at the bottom of the iron slag container to close, and control the molten iron tank car to continue moving towards the steelmaking position.

[0026] The automatic slag unloading method further comprises, after the slag unloading step:

[0027] The slag unloading detection step is to detect whether the iron slag remaining in the iron slag container exceeds a set value, and if not, the subsequent departure step is executed, and if yes, manual intervention is started.

[0028] The molten iron tank car, molten iron transfer transportation system and automatic slag unloading method provided by the present application have the following advantages compared with the prior art:

[0029] The molten iron tank car, molten iron transfer transportation system and automatic slag unloading method provided by the present application only need the molten iron tank car to stop at the first set position once, and the slag unloading channel is opened when the slag in the iron slag container is unloaded. Such a slag unloading process has higher slag unloading efficiency, and the slag unloading process is simple and convenient, without the need for more manpower, material resources, and multi-link cooperation, so that safety hazards can be avoided. Moreover, whether the capacity of the iron slag container is large or small, no obvious negative effects will be caused. Specifically, when the capacity of the iron slag container is set to be small, although the frequency of slag unloading is higher, the slag unloading process is simple, convenient and time-saving, and the production efficiency will not be significantly reduced. When the capacity of the iron slag container is set to be large, the iron slag container does not need to be moved from the molten iron tank car to the car or the overhead crane, and does not need to be transferred or lifted, so there is no inconvenience in the transfer, replacement and dumping process. BRIEF DESCRIPTION OF DRAWINGS

[0030] The accompanying drawings, which are incorporated into the specification and constitute a part of the specification, illustrate embodiments consistent with the present application and, together with the specification, serve to explain the principles of the present application.

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or prior art description will be briefly introduced as follows. Obviously, those skilled in the art can obtain other drawings according to these drawings without any creative effort.

[0032] Figure 1 A working state schematic diagram of an existing iron slag container;

[0033] Figure 2 A working state schematic diagram of another existing iron slag container;

[0034] Figure 3 A working state schematic diagram of the iron ladle car in the embodiment of the present application;

[0035] Figure 4 A structure schematic diagram of the iron ladle car in the embodiment of the present application;

[0036] Figure 5 A working state schematic diagram of the iron ladle car before unloading slag; Figure 4

[0037] A working state schematic diagram of the iron ladle car after unloading slag; Figure 6 Figure 4 A schematic diagram for detecting the amount of iron slag in the iron slag container;

[0038] Figure 7 A structure schematic diagram of the iron ladle car in the embodiment of the present application when at a slag salvaging station;

[0039] Figure 8 A working state schematic diagram of the iron ladle car in the embodiment of the present application when performing a slag salvaging operation at a slag salvaging station;

[0040] Figures 9 to 16 A flow chart of the automatic unloading slag method in the embodiment of the present application.

[0041] Figure 17 In the drawings:

[0042] 1-iron smelting position; 3-transferring track; 4-slag salvaging station; 5-iron ladle car; 6-iron container; 7-iron slag container; 8-unloading station;

[0043] 10-slag salvaging mechanism; 11-first driving mechanism; 12-second driving mechanism; 13-second detecting device;

[0044] 21-first detecting device; 22-iron slag amount detecting device;

[0045] 21-first detecting device; 22-iron slag amount detecting device;

[0046] ​51 - base; 52 - drive mechanism; 521 - hydraulic rod; 522 - hydraulic cylinder; 523, 524 - support;

[0047] 71 - movable wall; 72 - slag discharge passage; 73 - hinge;

[0048] 81 - slag pool;

[0049] T - iron slag. DETAILED DESCRIPTION

[0050] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0051] The embodiments of the present application of the hot metal ladle car, the hot metal transfer and transport system and the automatic slag discharge method will be described below with reference to the drawings.

[0052] In one embodiment of the hot metal ladle car of the present application, as shown in Figures 3 to 6 Fig. 1, the hot metal ladle car 5 is used to move on the transfer track 3 connecting the iron smelting position 1 and the steel smelting position (not shown in the figure). The hot metal ladle car 5 comprises a base 51, and a hot metal container 6 and an iron slag container 7 arranged on the base 51. The bottom wall of the iron slag container 7 comprises a movable wall 71 which is openable, and when the movable wall 71 is in the open state, a slag discharge passage 72 is formed between the iron slag container 7 and the space below the hot metal ladle car 5.

[0053] Specifically, the movable wall 71 can be horizontally translated and opened by horizontal translation to form the slag discharge passage 72; or the movable wall 71 can be horizontally rotated and opened by horizontal rotation to form the slag discharge passage 72; or the movable wall 71 can be upwardly rotated and opened by upward rotation to form the slag discharge passage 72; or the movable wall 71 can be downwardly rotated and opened by downward rotation to form the slag discharge passage 72. In the embodiments shown in Figure 5 and Figure 6 Fig. 2, the movable wall 71 is opened and the slag discharge passage 72 is formed by downward rotation.

[0054] In this embodiment, the iron-making position 1 and the steel-making position are connected by a transfer track 3, and a hot-metal ladle truck 5 is arranged on the transfer track 3 and can move along the transfer track 3 between the iron-making position 1 and the steel-making position. When the hot-metal ladle truck 5 is at the iron-making position, a hot-metal container 6 on the hot-metal ladle truck 5 is filled with hot metal, and then the hot-metal ladle truck 5 moves towards the steel-making position. When the hot-metal ladle truck 5 reaches the steel-making position, the hot metal in the hot-metal container 6 can be used for further smelting into steel at the steel-making position. During the movement of the hot-metal ladle truck 5 towards the steel-making position, the hot-metal ladle truck 5 can be stopped at an intermediate position. When the hot-metal ladle truck 5 is at the intermediate position, the slag in the hot metal in the hot-metal container 6 can be removed, and the removed slag T is transferred and stored in a slag container 7.

[0055] In this embodiment, the bottom wall of the slag container 7 comprises a movable wall plate 71 which can be opened, and when the movable wall plate 71 is opened, a slag discharge channel 72 is formed between the slag container 7 and the space below the hot-metal ladle truck 5. Based on the above structure of the slag container 7, when the amount of slag stored in the slag container 7 is large, the hot-metal ladle truck 5 only needs to be stopped at a certain position on the transfer track 3, the movable wall plate 71 is opened to form the slag discharge channel 72, and under the action of gravity, the slag T stored in the slag container 7 can be discharged from the slag container 7 and enter the space below the hot-metal ladle truck 5.

[0056] To facilitate the discharge of slag from the slag container 7 on the hot-metal ladle truck 5, a space for receiving the slag T can be arranged below one or more positions in the length direction of the transfer track 3. When the amount of slag stored in the slag container 7 is large and needs to be discharged, the hot-metal ladle truck 5 only needs to be stopped when it passes the position, and the slag T can be discharged in the space.

[0057] Compared with the slag discharge methods of using a car transfer or a crane hoisting in the prior art, the hot-metal ladle truck in this embodiment only needs to be stopped once, and the slag discharge channel 72 is opened. Such a slag discharge process has higher slag discharge efficiency, and the slag discharge process is simple and convenient, does not require more manpower and material resources, and does not require multi-link cooperation, so that safety hazards can be avoided. Moreover, whether the capacity of the slag container 7 is large or small, no obvious negative effects will be caused. Specifically, when the capacity of the slag container 7 is small, although the frequency of slag discharge is higher, since each slag discharge process is simple, convenient and time-saving, the production efficiency will not be obviously reduced. When the capacity of the slag container 7 is large, since the slag container 7 does not need to be moved from the hot-metal ladle truck 5 to a car or a crane, and does not need to be transferred or hoisted, there is no inconvenience that occurs in the transfer, replacement and dumping processes.

[0058] In one embodiment of the hot-metal ladle truck, as shown in Figures 4 to 6As shown, the iron slag container 7 and the base 51 are in a split structure, and the area on the base 51 corresponding to the bottom wall of the iron slag container 7 is provided with a through hole. The through hole provided on the base 51 is used as a slag discharging channel 72 on the one hand, and as a rotating space for the downward rotation of the movable wall plate 71 on the other hand. Considering the above uses, in this embodiment, the cross section of the through hole should have a relatively large area.

[0059] Alternatively, in another embodiment of the molten iron tank car, the iron slag container 7 and the base 51 are in an integrated structure. When the iron slag container 7 and the base 51 are in an integrated structure, the part of the iron slag container 7 and the base 51 below the inner bottom of the iron slag container 7 in the vertical direction can be regarded as the bottom wall of the iron slag container 7.

[0060] In an embodiment of the molten iron tank car, the molten iron tank car 5 further comprises a driving mechanism 52 connected with the movable wall plate 71 to drive the movable wall plate 71 to horizontally translate, or horizontally rotate, or upward rotate, or downward rotate. Specifically, the driving mechanism 52 can be an electric motor or a pneumatic cylinder or a hydraulic cylinder, etc.

[0061] Taking the case that the movable wall plate 71 rotates downward and the driving mechanism 52 is a hydraulic cylinder, as shown in the figure, Figures 4 to 6 the movable wall plate 71 is connected and installed on the hinge 73 and rotates relative to the iron slag container 7 through the connection with the hinge 73; the hydraulic cylinder comprises a hydraulic rod 521 and a hydraulic cylinder body 522, the hydraulic rod 521 is rotatably connected with the movable wall plate 71 through a support 523, and the hydraulic cylinder body 522 is rotatably connected with the base 51 through a support 524. The two ends of the hydraulic cylinder are rotatably connected between the base 51 and the movable wall plate 71, because the angle between the hydraulic cylinder and the base 51 and the movable wall plate 71 is continuously changing when the movable wall plate 71 rotates, therefore, the rotatable connection between the hydraulic cylinder and the base 51 and the movable wall plate 71 can better realize the rotation of the movable wall plate 71.

[0062] Based on the structure of the hydraulic cylinder shown in the figure, Figures 4 to 6 when opening the movable wall plate 71, the rod cavity of the hydraulic cylinder body 522 can be filled with oil, and the rodless cavity can be discharged, so as to retract the hydraulic rod 521 and open the movable wall plate 71; when closing the movable wall plate 71, the rodless cavity of the hydraulic cylinder body 522 can be filled with oil, and the rod cavity can be discharged, so as to extend the hydraulic rod 521 and close the movable wall plate 71.

[0063] In an embodiment of the molten iron tank car, the molten iron tank car 5 further comprises a support mechanism, one end of the support mechanism is connected with the lower side of the movable wall plate 71, and the other end is connected on the base 51.

[0064] In this embodiment, the support mechanism can support the movable wall panel 71. When the movable wall panel 71 is in the closed state, the supporting action of the support mechanism can help the movable wall panel 71 remain in the closed state and help the movable wall panel 71 overcome the gravity of the slag T inside the slag container 7.

[0065] In this embodiment, the support mechanism and the drive mechanism 52 can be the same mechanism. This arrangement reduces the number of components on the molten iron ladle car 5, helping to reduce the overall weight and cost. Figures 4 to 6 Taking the structure shown as an example, the drive mechanism 52 is a hydraulic cylinder. When the movable wall panel 71 needs to be opened or closed, the drive mechanism 52 can drive the movable wall panel 71 to rotate downward or upward. When the movable wall panel 71 is kept in the closed state, the drive mechanism 52 can apply a force to the movable wall panel 71 through its own hydraulic pressure and provide support.

[0066] In one embodiment of the molten iron transfer and transportation system of the present invention, the molten iron transfer and transportation system includes a transfer track 3, a slag unloading station 8, and a molten iron ladle car 5 as described in the above embodiments.

[0067] like Figure 3 As shown, the transfer track 3 connects the ironmaking position 1 and the steelmaking position. The molten iron ladle car 5 is mounted on the transfer track 3 and can move between the ironmaking position 1 and the steelmaking position along the transfer track 3. By moving the molten iron ladle car 5 between the ironmaking position 1 and the steelmaking position, the molten iron at the ironmaking position 1 can be transported to the steelmaking position for smelting into steel. When the molten iron ladle car 5 is transporting molten iron to the steelmaking position, it will stop midway. While the molten iron ladle car 5 is in this stopped state, the slag T in the molten iron in the molten iron container 6 is removed. The removed slag T is transferred and stored in the slag container 7. Therefore, the slag container 7 contains slag T. When the amount of slag T stored in the slag container 7 exceeds a certain amount, it needs to be unloaded so that slag T taken from the molten iron container 6 can be transferred to the slag container 7 subsequently.

[0068] like Figures 4 to 6 As shown, the slag unloading station 8 includes a slag pool 81, which is set at a first predetermined position on the transfer track 3; when the molten iron ladle car 5 stops at the first predetermined position, the slag pool 81 is located below the slag container 5.

[0069] In this embodiment, a slag pool 81 is provided at the slag unloading station 8, and the slag pool 81 is located below the transfer track 3. Thus, when the molten iron ladle car 5 stops at the first predetermined position, the slag container 7 on the molten iron ladle car 5 is vertically above the slag pool 81. In this case, by controlling the movable wall plate 71 on the bottom wall of the slag container 7, the movable wall plate 71 is opened to form a slag unloading channel 72. The slag T stored in the slag container 7 falls downwards into the slag pool 81 under the action of gravity, thereby achieving slag unloading from the slag container 7. During subsequent slag removal during the transportation of molten iron to the steelmaking location via the molten iron ladle car 5, the slag T taken from the molten iron container 6 can be transferred to the slag container 7.

[0070] In this embodiment, when unloading the slag T from the slag container 7, the molten iron ladle car 5 only needs to stop once at the first predetermined position to open the unloading channel 72. This unloading process is more efficient, simple, and convenient, requiring less manpower and resources, and eliminating the need for multiple coordination steps, thus avoiding safety hazards. Moreover, neither a large nor small capacity setting for the slag container 7 will bring significant negative effects. Specifically, when the capacity of the slag container 7 is set smaller, although the frequency of unloading is higher, the simple, convenient, and short unloading process each time will not lead to a significant reduction in production efficiency. When the capacity of the slag container 7 is set larger, since the slag container 7 does not need to be moved from the molten iron ladle car 5 to a truck or crane, and does not require transfer or hoisting, there are no inconveniences that would occur during transfer, replacement, and dumping.

[0071] In this embodiment, the transfer track 3 connects the ironmaking position 1 and the steelmaking position, and has a certain length. One or more of the aforementioned slag unloading stations 8 can be set along its length. When there are multiple slag unloading stations 8, when the slag container 7 needs to be unloaded, the molten iron ladle car 5 can selectively unload at one of the slag unloading stations 8, resulting in higher selectivity for slag unloading by the molten iron ladle car 5. Furthermore, the total amount of slag that can be received by multiple slag unloading stations 8 is greater.

[0072] In this embodiment, such as Figure 4 As shown, the slag pool 81 of each slag unloading station 8 is located between the two tracks of the transfer track 3, which avoids the slag pool 81 from adversely affecting the stability of the transfer track 3. In this case, the length of each slag pool 81 can be set as needed. When the length of each slag pool 81 is longer, the amount of iron slag that the slag pool 81 can receive will be greater. Moreover, the first set position can be a section range. When the molten iron ladle car 5 stops at different positions within this section range, it is always vertically above the slag pool 81, and can unload slag to different positions of the slag pool 81.

[0073] In one embodiment of the molten iron transfer system, the molten iron transfer system further comprises a slag amount detection device 22, which is arranged between the first set position and the iron making position 1, and is used to detect the amount of slag stored in the slag container 7.

[0074] Specifically, when the detection result of the slag amount detection device 22 shows that the amount of slag stored in the slag container 7 exceeds the set value, it means that the slag container 7 needs to be unloaded, in which case the molten iron ladle car 5 needs to stop at the first set position for unloading when passing through the first set position during the movement to the steel making position. When the detection result of the slag amount detection device 22 shows that the amount of slag stored in the slag container 7 does not exceed the set value, it means that the slag container 7 can still store more slag, which can meet the need of storing the slag taken out of the molten iron container 6 next time, and unloading is not needed, in which case the molten iron ladle car 5 does not need to stop at the first set position and can directly move to the steel making position for steel making with the molten iron when passing through the first set position during the movement to the steel making position.

[0075] Specifically, the slag amount detection device 22 is arranged between the first set position and the iron making position 1, and the molten iron ladle car 5 will first pass through the slag amount detection device 22 and then pass through the first set position when moving to the steel making position. In this way, the detection result of the slag amount detection device 22 can be obtained first, so that the molten iron ladle car 5 can be determined whether to stop at the first set position for unloading in time according to the detection result. The arrangement position of the slag amount detection device 22 is further preferably arranged in the slag ladling station 4 described later, or arranged between the slag ladling station 4 and the first set position, so that the amount of slag in the slag container 7 detected by the slag amount detection device 22 can reflect the real amount of slag in the slag container 7, and the detection result obtained will be more accurate.

[0076] In this embodiment, the amount of slag in the slag container 7 can be measured by weight, volume, or height. When measured by weight, the slag quantity detection device 22 can be a weight sensor, which can be placed, for example, at the bottom of the slag container 7. When measured by volume or height, the slag quantity detection device 22 can be an image acquisition device that captures images of the slag container 7 and determines whether the slag container 7 is full based on the reading of the captured images; alternatively, the slag quantity detection device 22 can be a distance sensor, which can be placed at a position corresponding to or above the top of the slag container 7. When the height of the slag stored in the slag container 7 reaches the top of the slag container 7 or is above the top by a certain distance, the detection information from the distance sensor can determine that the slag in the slag container 7 has reached that height, indicating that the amount of slag in the slag container 7 is large and needs to be unloaded.

[0077] Specifically, such as Figure 7 As shown, the slag quantity detection device 22 collects a first parameter a and a second parameter b to determine the quantity of slag stored in the slag container 7 based on the first parameter a and the second parameter b. The first parameter a is the vertical distance between the highest point of the slag in the slag container 7 and the top of the slag container 7, and the second parameter b is the horizontal distance between the highest point of the slag and the edge of the slag container 7.

[0078] In this specific embodiment, the slag quantity detection device 22 can be selected as an image acquisition device, and the first parameter a and the second parameter b are obtained by reading the acquired image.

[0079] It is understandable that the slag stored inside the slag container 7 will roughly form a mountain-shaped structure. The upper part of this slag mountain has a small area, forming the mountain peak, while the lower part has a large area, forming the mountain base. Based on the first parameter a and the second parameter b, the shape of the slag mountain and its relative relationship to the slag container 7 can be determined more accurately. This allows for a more precise determination of whether the slag container 7 can continue to store more slag and whether timely slag unloading is necessary.

[0080] In one embodiment of the molten iron transfer and transportation system, the molten iron transfer and transportation system further includes a first detection device 21, which is used to detect whether the molten iron ladle car 5 has moved to a first set position.

[0081] Specifically, during the movement of the hot metal ladle car 5 to the steelmaking position, the first detection device 21 can detect that the hot metal ladle car 5 has moved to the first set position, which can be that when the first detection device 21 detects this information, the information is sent to the control mechanism, and the control mechanism will issue an instruction to control the hot metal ladle car 5 to stop moving, so as to accurately stop the hot metal ladle car 5 at the first set position. In actual implementation, considering that the hot metal ladle car 5 needs a certain distance from movement to stillness, this distance can be considered in the relative positional relationship between the first set position and the first detection device 21, that is, the first detection device 21 can be arranged at a position slightly forward relative to the first set position (the first detection device 21 is closer to the ironmaking position 1, and the first set position is closer to the steelmaking position).

[0082] In addition, the detection of the hot metal ladle car 5 by the first detection device 21 can also be that the hot metal ladle car 5 is pre-implanted with the position of the first set position and the instruction to stop at the first set position, and can automatically stop at the first set position during movement, and the detection of the hot metal ladle car 5 by the first detection device 21 is used to confirm whether the hot metal ladle car 5 is truly stopped at the first set position; if the first detection device 21 detects that the hot metal ladle car 5 is not at the stop position, it means that the movement and stopping process of the hot metal ladle car 5 is abnormal, at which time manual intervention and correction or other processing need to be performed.

[0083] In an embodiment of the hot metal transfer transport system, the hot metal transfer transport system further comprises a third detection device, which is used to detect whether the residual iron slag in the iron slag container 7 exceeds a set value.

[0084] Specifically, the third detection device can be an image acquisition device, which can acquire images in the iron slag container 7. According to the acquired images, it can be judged by manual observation or machine reading to confirm whether the iron slag in the iron slag container 7 is all discharged into the slag pool 81 or at least most of it is discharged into the slag pool 81. If part of the iron slag in the iron slag container 7 is not discharged, and the amount of the iron slag not discharged exceeds a set value, manual intervention or other measures need to be taken for processing.

[0085] It can be understood that when the movable wall 71 is opened and the slag discharge channel 72 is opened, if all or most of the iron slag stored in the iron slag container 7 is discharged into the slag pool 81, the slag discharge channel 72 is in communication with the upper and lower portions, and light can pass through; if all or most of the iron slag still remains in the iron slag container 7 and is not discharged from the iron slag container 7, it indicates that the slag discharge channel 72 is blocked by the iron slag, and light cannot pass through. The above differences will be reflected in the image collected by the image collection device as the third detection device. If all the pixel points in the collected image are black, it indicates that light cannot pass through the slag discharge channel 72, and the slag discharge channel 72 is blocked. If there are high-light pixel points in the collected image, it indicates that light can pass through the slag discharge channel 72, and the slag discharge channel 72 is through, at which time it can be determined that all or most of the iron slag stored in the iron slag container 7 has been discharged.

[0086] Of course, in actual implementation, whether all or at least most of the iron slag stored in the iron slag container 7 is discharged, and whether the iron slag remaining in the iron slag container 7 still exceeds the set value can also be determined according to other principles from the image collected by the image collection device as the third detection device.

[0087] In an embodiment of the molten iron transfer and transportation system, the molten iron transfer and transportation system further comprises an automatic slag salvaging device, such as Figure 8 As shown, the automatic slag salvaging device comprises a slag salvaging station 4, which is arranged at a second set position of the transfer track 3 from the self-smelting iron position 1 to the steelmaking position, and is provided with a stopping position of the molten iron ladle car 5. The automatic slag salvaging device is provided with a slag salvaging mechanism 10, a first driving mechanism 11, a second driving mechanism 12 and a second detection device 13 at the slag salvaging station 4. The slag salvaging mechanism 10 is used for salvaging the iron slag from the molten iron container 6 and transferring the salvaged iron slag to the iron slag container 7. The second detection device 13 is used for detecting whether the molten iron ladle car 5 moves to the slag salvaging station 4.

[0088] Specifically, the first driving mechanism 11 and the second driving mechanism 12 are connected with the slag salvaging mechanism 10. The first driving mechanism 11 is used for driving the slag salvaging mechanism 10 to move in the horizontal direction to a first position and a second position. The first position is a position corresponding to the molten iron container 6 on the molten iron ladle car 5 in the stopping position in the vertical direction, and the slag salvaging mechanism 10 salvages the iron slag from the molten iron container 6 when being in the first position. The second position is a position corresponding to the iron slag container 7 on the molten iron ladle car 5 in the vertical direction, and the slag salvaging mechanism 10 places the salvaged iron slag into the iron slag container 7 when being in the second position. The second driving mechanism 12 is used for driving the slag salvaging mechanism 10 to move in the vertical direction. When the slag salvaging mechanism 10 salvages the iron slag from the molten iron container 6 or places the salvaged iron slag into the iron slag container 7, the second driving mechanism 12 can drive the slag salvaging mechanism 10 to move in the vertical direction to approach the molten iron container 6 and the iron slag container 7, thereby facilitating the salvaging and placing of the slag.

[0089] In this embodiment, the process of the molten iron ladle car 5 performing slag removal operations at the slag removal station 4 is as follows: Figures 9 to 16 As shown, during this process, the slag removal mechanism 10 is driven by the first drive mechanism 11 and the second drive mechanism 12, moving between a first position and a second position, and performing lifting and lowering movements at the first and second positions. Through one or more slag removal operations, the iron slag content in the molten iron container 6 is reduced to below a set value.

[0090] In this embodiment, the first detection device 13 detects whether the molten iron ladle car 5 has moved to the slag removal station 4; the first drive mechanism 11 moves the slag removal mechanism 10 to a first position and a second position, corresponding vertically to the molten iron container 6 and the slag container 7, respectively; the second drive mechanism 12 controls the raising and lowering of the slag removal mechanism 10. With the above structures working together, the molten iron ladle car 5 can be stopped at the slag removal station 4 for a period of time while moving towards the steelmaking position. During this period, the slag removal mechanism 10 removes slag from the molten iron container 6 and moves it to the slag container 7 to transfer the removed slag into the slag container 7. This ensures that the slag content in the molten iron container 6 is lower than a set value, meeting the requirements for steelmaking. During the slag removal operation, the molten iron container 6 remains stationary, eliminating the need for hoisting or emptying the molten iron. This eliminates the need for a slag removal station, significantly reducing costs. Furthermore, since there's no need to empty the molten iron from container 6, and the slag removal process is automated, the time required is reduced, and the molten iron from ironmaking position 1 to steelmaking position is shorter, helping to maintain the iron's temperature and preventing a significant drop. Thirdly, it's understandable that hoisting and emptying the molten iron from container 6 carries significant safety risks. This embodiment eliminates the need for hoisting and emptying container 6, reducing equipment risks, operational errors, and the resulting safety risks. Fourthly, by not emptying container 6, iron loss and iron damage are minimized.

[0091] In this embodiment, during the journey of the molten iron ladle car 5 from the ironmaking position 1 to the steelmaking position, the slag removal station 4 is located before the slag unloading station 8. That is, the slag removal station 4 is closer to the ironmaking position 1, and the slag unloading station 8 is closer to the steelmaking position. During the movement, the molten iron ladle car 5 first passes the slag removal station 4 and then passes the slag unloading station 8.

[0092] As mentioned above, the iron slag amount detection device 22 can be arranged at the slag skimming station 4, which can detect the amount of iron slag in the iron slag container 7 after the slag skimming mechanism 10 transfers and stores the iron slag taken out from the iron ladle 6 into the iron slag container 7, and if the amount of iron slag in the iron slag container 7 reaches the set value, the iron ladle car 5 needs to stop at the slag unloading station 8 during the movement to the steelmaking position in the current trip to unload the slag. If the amount of iron slag in the iron slag container 7 does not reach the set value, the iron ladle car 5 does not need to stop at the slag unloading station 8 during the movement to the steelmaking position in the current trip to unload the slag, but can stop at the slag unloading station 8 to unload the slag in the next or later trip from the ironmaking position 1 to the steelmaking position.

[0093] In one embodiment of the automatic slag unloading method of the present application, the automatic slag unloading method comprises the following steps S1-S5, as shown in the flowchart. Figure 17

[0094] Step S1, iron slag amount detection step: detecting the amount of iron slag stored in the iron slag container 7 on the iron ladle car 5, and executing the subsequent entry step when the amount of iron slag stored in the iron slag container 7 exceeds the set value.

[0095] In this step S1, the amount of iron slag in the iron slag container 7 is detected, which can be achieved by detecting the weight, volume, height, etc. of the iron slag in the iron slag container 7. The specific implementation can be referred to the description of the iron slag amount detection device 22 in the above embodiment of the iron transfer and transportation system.

[0096] In the movement of the iron ladle car 5 from the ironmaking position 1 to the steelmaking position, the specific time or position for detecting the amount of iron slag in the iron slag container 7 can be selected before the iron ladle car 5 reaches the slag unloading station 8, i.e. between the slag unloading station 8 and the ironmaking position 1. Further preferably, the detection of the amount of iron slag in the iron slag container 7 can be performed when the iron ladle car 5 is in the slag skimming station 4 or between the slag skimming station 4 and the slag unloading station 8.

[0097] Step S2, entry step: controlling the iron ladle car 5 to enter the slag unloading station 8 and stop at the first set position.

[0098] ​In step S2, the ladle car 5 can be pre-implanted with the position information of the slag station 8, and an instruction of stopping at the slag station 8 (triggered by the detection result of the amount of slag in the slag container 7 in step S1) is performed, in which case the ladle car 5 can be automatically stopped at the first set position during movement to the direction of the steelmaking position. After the ladle car 5 is stopped at the first set position, the first detection device provided at the first set position can be used to detect whether the first set position is stopped by the ladle car 5 to confirm whether the ladle car 5 is accurately stopped at the first set position. If the detection result of the first detection device is that the first set position is not stopped by the ladle car 5, manual intervention or other processing is required.

[0099] In this step S2, the stopping of the ladle car 5 can also be triggered by the first detection device 21 provided at the first set position. Specifically, during the movement of the ladle car 5 to the direction of the steelmaking position, when the ladle car 5 travels to the first set position, the first detection device 21 detects the ladle car 5, at which time the first detection device 21 sends the detection result to the control mechanism, and the control mechanism controls the ladle car 5 to stop according to the detection result, thereby stopping the ladle car 5 at the first set position.

[0100] Step S3, slag discharging step: control the movable wall plate 71 at the bottom of the slag container 7 to open, forming a slag discharging channel 72, so that the slag stored in the slag container 7 enters the slag pool 81 located below through the slag discharging channel 72.

[0101] In step S3, the movable wall plate 71 is controlled to translate or rotate downward to form the slag discharging channel 72 at the bottom of the slag container 7.

[0102] Step S4, slag discharging detection step: detecting whether the remaining slag in the slag container 7 exceeds a set value, if not, performing the subsequent off-station step, if yes, starting manual intervention.

[0103] In step S4, the detection of whether the slag remains in the slag container 7 can be realized by the third detection device described in the above embodiment of the molten iron transfer transportation system.

[0104] In this step S4, the detection of the remaining slag in the slag container 7 is mainly to confirm whether all or most of the slag in the slag container 7 has been transferred to the slag pool 81 through the slag discharging channel 72 in step S3, so as to avoid the situation that the ladle car 5 moves to the direction of the steelmaking position directly after the slag discharging fails due to the slag blocking the slag discharging channel 72, etc.

[0105] Step S5, off-station step: control the movable wall plate 71 at the bottom of the slag container 7 to close, and control the ladle car 5 to continue moving to the direction of the steelmaking position.

[0106] After the step S4, in the case that the iron slag in the iron slag container 7 is successfully transferred from the slag discharging channel 72 to the slag pool 81, the space in the iron slag container 7 vacated can be used to store the iron slag taken out from the molten iron container 6 in the next slag taking operation, ensuring the smooth progress of the next slag taking operation. At this time, the movable wall plate 71 at the bottom of the iron slag container 7 is closed, facilitating the storage of the iron slag in the subsequent slag taking operation, and avoiding the obstruction to the subsequent movement of the molten iron ladle car 5 away from the slag discharging station 8 (especially in the case that the opening mode of the movable wall plate 71 is downward rotation, the movable wall plate 71 is prone to interfere with the transfer channel 3 in the opened state). The molten iron ladle car 5 can continue to move towards the steelmaking position, and the molten iron in the molten iron container 6 is smelted into steel at the steelmaking position.

[0107] The automatic slag discharging method in the above embodiments of the present application only needs the molten iron ladle car 5 to stop once at the first set position, and the slag discharging channel 72 is opened when the iron slag in the iron slag container 7 is discharged. Such a slag discharging process has higher slag discharging efficiency, and is simple and convenient, and does not require more manpower, material resources, and multi-link cooperation, so that safety hazards can be avoided. Moreover, whether the capacity of the iron slag container 7 is large or small, no obvious negative effects will be caused. Specifically, when the capacity of the iron slag container 7 is small, although the frequency of slag discharging is higher, the simple and convenient slag discharging process does not cause obvious reduction of production efficiency due to short time consumption. When the capacity of the iron slag container 7 is large, the iron slag container 7 does not need to be moved from the molten iron ladle car 5 to the car or the overhead crane, and does not need to be transferred and hoisted, so that the inconvenience in the transfer, replacement and dumping processes can be avoided.

[0108] It should be noted that, in this document, relational terms such as“first” and“second”, and the like, are used solely to distinguish one entity or action from another entity or action, without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms“comprises”,“comprising”, or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by“comprises a...” does not, without more constraints, exclude the existence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0109] The foregoing is considered as illustrative only of the principles of the application. Numerous modifications and changes will readily occur to those skilled in the art, and the generic principles defined herein can be applied to other embodiments without departing from the spirit or scope of the application. Therefore, the scope of the application is indicated by the appended claims rather than by the foregoing description, and all changes that come within the meaning and range of equivalents are intended to be embraced therein.

Claims

1. A molten iron transfer and transportation system, characterized in that, The molten iron transfer and transportation system includes molten iron tank cars, transfer tracks, and slag unloading stations; The molten iron ladle car includes a base and a container for molten iron and a container for slag set on the base. The bottom wall of the slag container includes an openable movable wall panel, and when the movable wall panel is in the open state, a slag unloading channel is formed between the slag container and the space below the molten iron car. The movable wall panel can be horizontally moved and opened to form the slag discharge channel; or the movable wall panel can be horizontally rotated and opened to form the slag discharge channel; or the movable wall panel can be upwardly rotated and opened to form the slag discharge channel; or the movable wall panel can be downwardly rotated and opened to form the slag discharge channel. The molten iron ladle car also includes a drive mechanism, which is connected to the movable wall panel to drive the movable wall panel to translate, rotate horizontally, rotate upward or downward. The molten iron ladle car also includes a support mechanism, one end of which is connected to the lower side of the movable wall panel, and the other end is connected to the base. The transfer track connects the ironmaking position and the steelmaking position, and the molten iron ladle car is set on the transfer track and can move along the transfer track between the ironmaking position and the steelmaking position. The slag unloading station includes a slag pool, which is located at a first predetermined position on the transfer track; when the molten iron ladle car stops at the first predetermined position, the slag pool is located below the slag container.

2. The molten iron transfer and transportation system according to claim 1, characterized in that, The slag container and the base are an integral structure; or the slag container and the base are separate structures, and the area on the base corresponding to the bottom wall of the slag container is provided with a through hole.

3. The molten iron transfer and transportation system according to claim 1, characterized in that, The driving mechanism is a hydraulic cylinder, one end of which is rotatably connected to the base and the other end is rotatably connected to the lower side of the movable wall panel.

4. The molten iron transfer and transportation system according to claim 1, characterized in that, The molten iron transfer and transportation system also includes a first detection device, which is used to detect whether the molten iron ladle car has moved to the first set position.

5. The molten iron transfer and transportation system according to claim 1, characterized in that, The molten iron transfer and transportation system also includes an automatic slag removal device, which includes a slag removal station. The slag removal station is set at a second predetermined position on the transfer track from the ironmaking position to the steelmaking position, and the slag removal station is equipped with a stop position for the molten iron ladle car. The automatic slag removal equipment is equipped with a slag removal mechanism and a second detection device at the slag removal station. The slag removal mechanism is used to remove iron slag from the molten iron container and transfer the removed iron slag into the iron slag container. The second detection device is used to detect whether the molten iron ladle car has moved to the slag removal station.

6. The molten iron transfer and transportation system according to claim 1, characterized in that, The molten iron transfer and transportation system also includes an iron slag quantity detection device, which is set between the first set position and the ironmaking position. The iron slag quantity detection device is used to detect the amount of iron slag stored in the iron slag container.

7. The molten iron transfer and transportation system according to claim 6, characterized in that, The iron slag quantity detection device collects a first parameter and a second parameter to determine the amount of iron slag stored in the iron slag container based on the first parameter and the second parameter. The first parameter is the vertical distance between the highest point of the iron slag inside the iron slag container and the top of the iron slag container, and the second parameter is the horizontal distance between the highest point of the iron slag and the edge of the iron slag container.

8. The molten iron transfer and transportation system according to claim 1, characterized in that, The molten iron transfer and transportation system also includes a third detection device, which is used to detect whether the slag remaining in the slag container exceeds a set value.

9. An automatic slag unloading method for the molten iron transfer and transportation system according to any one of claims 1-8, characterized in that, The automatic slag unloading method includes: Iron slag quantity detection steps: Detect the amount of iron slag stored in the iron slag container on the molten iron ladle car. If the amount of iron slag stored in the iron slag container exceeds the set value, execute the subsequent entry steps. Entry procedure: Control the molten iron ladle car to enter the slag unloading station and stop at the first predetermined position; Slag unloading step: Control the opening of the movable wall plate at the bottom of the slag container to form a slag unloading channel, so that the slag stored in the slag container enters the slag pool located below through the slag unloading channel; Departure procedure: Control the movable wall panel at the bottom of the slag container to close, and control the molten iron ladle car to continue moving towards the steelmaking location.

10. The automatic slag unloading method according to claim 9, characterized in that, The automatic slag unloading method also includes the following steps performed after the slag unloading step: Slag unloading detection steps: Detect whether the amount of iron slag remaining in the iron slag container exceeds the set value. If not, proceed with the subsequent departure steps. If so, initiate manual intervention.

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