A feeding device and a feeding method for a reverse can station

Abstract

The present application relates to the technical field of steelmaking, and particularly relates to a feeding device of a ladle station. Embodiments of the present application provide a feeding device of a ladle station, which comprises a mounting frame, an underground bunker, a chute assembly and a feeding mechanism. The underground bunker is installed on the mounting frame and is used for storing metal charge pressing balls. The chute assembly is installed on the mounting frame and can be communicated with a ladle. The ladle is arranged underground and is located at one side of the underground bunker. The feeding mechanism is installed on the mounting frame and is connected with the underground bunker at one end and connected with the chute assembly at the other end. The feeding mechanism can transport the metal charge pressing balls in the underground bunker to the chute assembly, and the metal charge pressing balls can fall into the ladle through the chute assembly. The feeding device of the ladle station provided by the present application realizes automatic feeding of the ladle and improves the feeding efficiency.

Description

Technical Field

[0001] This invention relates to the field of steelmaking technology, and in particular to a feeding device for a transfer station. Background Technology

[0002] Currently, most steelmaking processes follow this sequence: blast furnace tapping – torpedo ladle transport of molten iron – ladle pouring – desulfurization at the desulfurization station – converter smelting. In the traditional model, torpedo ladles transport molten iron from the blast furnace to the ladle pouring station in the steel plant via railway. The molten iron is then poured into a ladle in the pit of the ladle pouring station by tilting the torpedo ladle. Simultaneously, solid iron-containing materials, such as scrap steel, are added to the ladle; this step is called feeding. However, related technologies lack dedicated feeding devices for ladle pouring stations, resulting in low feeding efficiency. Summary of the Invention

[0003] This application provides a feeding device for a tank transfer station, which solves the technical problem of low feeding efficiency caused by the lack of a feeding device specifically for tank transfer stations in related technologies.

[0004] In a first aspect, embodiments of this application provide a feeding device for a tank transfer station, the feeding device comprising:

[0005] Mounting rack;

[0006] An underground silo, installed on the mounting frame, is used to store metal briquettes;

[0007] A chute assembly is installed on the mounting frame and is capable of communicating with a ladle of molten iron; wherein the ladle of molten iron is located underground and is situated on one side of the underground silo;

[0008] The feeding mechanism is installed on the mounting frame, with one end connected to the underground silo and the other end connected to the chute assembly;

[0009] The feeding mechanism can transport the metal briquette in the underground silo to the chute assembly, and the metal briquette can fall into the molten iron ladle through the chute assembly.

[0010] In some embodiments, the feeding device further includes a molten iron transport ladle, which is mounted on the mounting frame and arranged side by side with the molten iron ladle, and the chute assembly is capable of communicating with the molten iron transport ladle.

[0011] In some embodiments, the chute assembly includes a rotary chute, a first discharge chute, and a second discharge chute. The rotary chute is located above the first discharge chute and the second discharge chute and is connected to the feeding mechanism. The first discharge chute is aligned with the ladle of molten iron, and the second discharge chute is aligned with the ladle of molten iron. The rotary chute may optionally communicate with either the first discharge chute or the second discharge chute.

[0012] In some embodiments, the chute assembly further includes an air seal ring and a vent pipe. The air seal ring is disposed at the inlet of the first discharge chute and the second discharge chute. The air seal ring has an air cavity and a plurality of air jet holes communicating with the air cavity. The vent pipe communicates with the air cavity. The plurality of air jet holes are disposed on the inner wall of the air seal ring and communicate with the first discharge chute / second discharge chute.

[0013] When the vent pipe vents air into the air chamber, the multiple jet holes can spray airflow into the first discharge chute / second discharge chute to form a vortex and draw in dust.

[0014] In some embodiments, the jet orifice is angled downwards.

[0015] In some embodiments, the feeding mechanism includes a third discharge chute, a bucket elevator, a fourth discharge chute, and a belt assembly connected in sequence. The third discharge chute is connected to the underground silo, and the belt assembly is connected to the chute assembly.

[0016] In some embodiments, there are two molten iron ladles and two chute assemblies, with each ladle and chute assembly corresponding to the other. The two molten iron ladles are arranged side by side, and the feeding mechanism can selectively transport the metal material briquettes in the underground silo to one of the chute assemblies.

[0017] In some embodiments, the belt assembly includes a transfer belt and a reversible belt connected in sequence, the transfer belt being connected to the fourth discharge chute, and one end of the reversible belt being connected to one of the chute assemblies and the other end being connected to the other chute assembly.

[0018] In some embodiments, the metal pellets are made from dust generated during converter smelting.

[0019] Secondly, embodiments of this application provide a feeding method for a tank transfer station, the method being implemented by the aforementioned tank transfer station feeding device, the method comprising:

[0020] The chute assembly is connected to the molten iron transport ladle, and the feeding mechanism transports the metal material briquette in the underground silo to the chute assembly, so that the metal material briquette falls into the molten iron transport ladle through the chute assembly;

[0021] Molten iron is added to the molten iron transport ladle to melt the metal material briquette in the molten iron transport ladle, and the molten iron in the molten iron transport ladle is poured into the molten iron ladle;

[0022] The chute assembly is connected to the molten iron ladle, and the feeding mechanism transports the metal material briquette in the underground silo to the chute assembly, so that the metal material briquette falls into the molten iron ladle through the chute assembly.

[0023] The beneficial effects of this application are as follows:

[0024] This application provides a feeding device for a ladle-turning station, including a mounting frame, an underground silo, a chute assembly, and a feeding mechanism. Since the feeding mechanism can transport the metal material briquettes in the underground silo to the chute assembly, and the metal material briquettes can fall into the molten iron ladle through the chute assembly, the metal material briquettes can be added to the molten iron ladle with the cooperation of the feeding mechanism and the chute assembly, thereby realizing automatic feeding of the molten iron ladle and improving the feeding efficiency. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention.

[0026] Figure 1 A schematic diagram of the feeding device at the transfer station is shown.

[0027] Figure 2 This diagram shows a structural schematic of the feeding device at the transfer station from another perspective.

[0028] Figure 3 It shows Figure 1 A magnified view of a portion of point A in the middle.

[0029] Figure 4 It shows Figure 3 A partial cross-sectional view.

[0030] Figure 5 It shows Figure 4 A magnified view of a section at point B in the middle.

[0031] Figure 6 It shows Figure 1 A schematic diagram of the feeding mechanism.

[0032] Explanation of reference numerals in the attached figures:

[0033] 10-Feeding device, 20-Molten iron ladle, 30-Molten iron transport ladle, 100-Mounting frame, 200-Underground silo, 210-Vibrating feeder, 300-Channel assembly, 310-Rotary chute, 320-First discharge chute, 330-Second discharge chute, 340-Air seal ring, 341-Outer wall, 342-Inner wall, 343-Air chamber, 344-Air jet hole, 350-Ventilation pipe, 400-Feeding mechanism, 410-Third discharge chute, 420-Bucket elevator, 430-Fourth discharge chute, 440-Belt assembly, 441-Transfer belt, 442-Reversible belt, 500-Weighing hopper, 600-Dust hood, 700-Material dump truck. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0035] It should be noted that all directional indications in the embodiments of the present invention are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0036] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0037] Furthermore, in this invention, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this invention.

[0038] Please see Figure 1and Figure 2 This application provides a feeding device 10 for a ladle-turning station, including a mounting frame 100, an underground silo 200, a chute assembly 300, and a feeding mechanism 400. The underground silo 200 is mounted on the mounting frame 100 and is used to store metal briquettes. The chute assembly 300 is mounted on the mounting frame 100 and can communicate with a ladle 20; wherein the ladle 20 is located underground and on one side of the underground silo 200. The feeding mechanism 400 is mounted on the mounting frame 100, with one end connected to the underground silo 200 and the other end connected to the chute assembly 300.

[0039] The feeding mechanism 400 can transport the metal material briquettes in the underground silo 200 to the chute assembly 300, and the metal material briquettes can fall into the molten iron ladle 20 through the chute assembly 300.

[0040] The mounting frame 100 serves as the mounting base for the feeding device 10, providing a mounting base for at least some of the other components of the feeding device 10, enabling the other components of the feeding device 10 to be stably installed and improving the integration of the feeding device 10. The underground silo 200, the chute assembly 300, and the feeding mechanism 400 are all mounted on the mounting frame 100.

[0041] The underground silo 200 is located underground and is spaced apart from the transfer station. The transfer station is equipped with a material dump truck 700, which can pull metal briquettes from the workshop to above the underground silo 200 and unload them into the underground silo 200, so that the underground silo 200 can store metal briquettes. The storage capacity of the underground silo 200 must be able to meet the daily demand of the steel plant's transfer station.

[0042] The final step in the steelmaking process is converter smelting. Converter smelting produces a lot of dust, and metal briquettes can be made from the dust produced in converter smelting. These briquettes also have a high iron content, thus realizing the secondary recycling of dust. Moreover, metal briquettes are inexpensive, which greatly saves steelmaking costs compared to traditional feeding systems that rely on expensive scrap steel as the main raw material.

[0043] In addition, metal briquettes can also be made from metal-containing slags such as steel slag and desulfurization slag after processing and briquetting.

[0044] The chute assembly 300 is located above the ladle 20 and can communicate with the ladle 20, so that the metal material ball of the chute assembly 300 can fall into the ladle 20. The chute assembly 300 and the ladle 20 do not necessarily need to be directly connected.

[0045] The feeding mechanism 400 is a transport mechanism for metal briquettes. One end of the feeding mechanism 400 is connected to the underground silo 200, and the other end is connected to the chute assembly 300. Therefore, it can transport the metal briquettes in the underground silo 200 to the chute assembly 300. Since at least part of the chute assembly 300 is aligned with the ladle 20, the metal briquettes can fall directly into the ladle 20 after entering the channel of the chute assembly 300, thereby realizing automatic feeding of the ladle 20 and improving feeding efficiency.

[0046] It should be noted that the dust generated during the tapping process at the tundish station is very large, and the on-site operating environment is also very harsh. In order to avoid on-site operation by the operator, the entire feeding device 10 can be remotely controlled. The operator can control the feeding device 10 to feed by observing the high-definition screen on the site and operating it on the host computer.

[0047] Specifically, cameras are installed at the transfer station to capture live footage, and the cameras' network settings are configured to ensure they can transmit video streams. Then, the various components of the feeding device 10 are configured to receive control commands from a host computer. The host computer can be integrated with a PLC controller, which controls the various components of the feeding device 10 (mainly the feeding mechanism 400 and the chute assembly 300) to achieve automatic feeding. Remote control is existing technology, and its principles will not be elaborated here.

[0048] In some embodiments, the feeding device 10 further includes a molten iron transport ladle 30, which is mounted on the mounting frame 100 and arranged side by side with the molten iron ladle 20, and the chute assembly 300 is able to communicate with the molten iron transport ladle 30.

[0049] Since at least part of the chute assembly 300 is aligned with the molten iron transport ladle 30, the metal briquettes entering the chute assembly 300 can enter not only the molten iron ladle 20 but also the molten iron transport ladle 30. The molten iron transport ladle 30 can be a torpedo ladle.

[0050] In related technologies, because scrap steel is relatively large and difficult to melt, adding it to the molten iron transport ladle 30 would require additional heating agent or equipment for preheating the scrap steel, resulting in higher costs. Therefore, scrap steel is only added to the molten iron ladle 20. However, in this embodiment, since metal briquettes are used instead of scrap steel, and these briquettes are smaller and easier to melt, a certain amount of metal briquettes can be added to the molten iron transport ladle 30.

[0051] Specifically, the molten iron transport ladle 30 first adds a certain amount of metal material briquettes at the ladle transfer station, and then the molten iron transport ladle 30 is transported back to the ironworks to load molten iron. Due to the high temperature of the molten iron, the metal material briquettes will almost completely melt during the process of transporting the molten iron transport ladle 30 from the ironworks to the ladle transfer station. After the molten iron transport ladle 30 arrives at the ladle transfer station, the molten iron is poured into the molten iron ladle 20, and metal material briquettes are also added to the molten iron ladle 20 through the feeding device 10. That is, a large amount of metal material briquettes have been melted in the molten iron ladle 20, and metal material briquettes are also added to the molten iron ladle 20, which can greatly increase the amount of molten iron in the molten iron ladle 20.

[0052] It should be noted that the side-by-side arrangement of the molten iron transport ladle 30 and the molten iron ladle 20 refers to their arrangement on a horizontal plane. However, since the molten iron ladle 20 is below the ground and the molten iron transport ladle 30 is above the ground, their heights are not the same.

[0053] In some embodiments, the chute assembly 300 includes a rotary chute 310, a first discharge chute 320, and a second discharge chute 330. The rotary chute 310 is located above the first discharge chute 320 and the second discharge chute 330 and is connected to the feeding mechanism 400. The first discharge chute 320 is aligned with the ladle 20, and the second discharge chute 330 is aligned with the molten iron transport ladle 30. The rotary chute 310 may optionally communicate with either the first discharge chute 320 or the second discharge chute 330.

[0054] The rotary chute 310 is connected to the first discharge chute 320, and the chute assembly 300 is connected to the ladle 20. The rotary chute 310 is also connected to the second discharge chute 330, and the chute assembly 300 is connected to the molten iron transport ladle 30. To further improve the feeding efficiency, two molten iron transport ladles 30 can be provided, located on both sides of the ladle 20. Correspondingly, there are also two second discharge chutes 330, located on both sides of the first discharge chute 320.

[0055] Since the molten iron transport ladle 30 and the molten iron ladle 20 are arranged side by side, the first discharge chute 320 and the second discharge chute 330 are also arranged side by side. The rotary chute 310 can be connected to the first discharge chute 320 or the second discharge chute 330 by rotation. The rotary chute 310 can rotate by a cycloidal pinwheel reducer in conjunction with a transmission chain. Specifically, the rotary chute 310 is equipped with a sprocket, and the motor drives the chain transmission through the cycloidal pinwheel reducer. The chain transmits power to the sprocket of the rotary chute 310, thereby realizing the rotation of the rotary chute 310.

[0056] Of course, the motor is connected to the PLC controller, so the operator can control the rotation of the rotary chute 310 through the host computer, so that the rotary chute 310 can be selectively connected to the first discharge chute 320 or the second discharge chute 330. It should be noted that the electrical components in the feeding mechanism 400 and the chute assembly 300 in this article are all connected to the PLC controller to realize automated feeding, which will not be described in detail later.

[0057] To ensure accurate alignment of the rotary chute 310, an alignment limit is provided on the rotary chute 310 to provide feedback on the position signals of the first discharge chute 320 and the second discharge chute 330. That is, when the rotary chute 310 is aligned with the first discharge chute 320 / second discharge chute 330, the rotary chute 310 stops rotating.

[0058] Please see Figures 2-5 In some embodiments, the chute assembly 300 further includes an air seal ring 340 and a vent pipe 350. The air seal ring 340 is disposed at the inlet of the first discharge chute 320 and the second discharge chute 330. The air seal ring 340 has an air chamber 343 and a plurality of jet holes 344 communicating with the air chamber 343. The vent pipe 350 communicates with the air chamber 343. The plurality of jet holes 344 are disposed on the inner wall 342 of the air seal ring 340 and communicate with the first discharge chute 320 / second discharge chute 330. When the vent pipe 350 vents air into the air chamber 343, the plurality of jet holes 344 can spray airflow into the first discharge chute 320 / second discharge chute 330 to form a vortex and suck in dust.

[0059] Since the rotary chute 310 rotates and distributes material on the same plane, its outlet needs to be positioned relative to the inlets of the first discharge chute 320 and the second discharge chute 330. To prevent interference between the rotary chute 310 and the first discharge chute 320 and the second discharge chute 330, there will be a certain gap between the rotary chute 310 and the first discharge chute 320 and the second discharge chute 330. This gap can easily cause dust during the material distribution process. Therefore, air seal rings 340 are installed on the first discharge chute 320 and the second discharge chute 330 to improve the dust problem. The first discharge chute 320 will be used as an example for explanation, and the same applies to the second discharge chute 330.

[0060] It is understood that the air seal ring 340 is ring-shaped and can be connected to the first discharge chute 320 via a flange. The air seal ring 340 includes an outer wall 341 and an inner wall 342. The first discharge chute 320 has a centerline along its length. The inner wall 342 is located close to the centerline, and the outer wall 341 is located away from the centerline. An air cavity 343 is formed between the outer wall 341 and the inner wall 342. Multiple jet holes 344 can be arranged circumferentially along the inner wall 342. The vent pipe 350 is used to introduce compressed air into the air cavity 343. After the compressed air is introduced into the air cavity 343 through the vent pipe 350, multiple jet holes 344 spray multiple airflows into the interior of the first discharge chute 320. The multiple airflows interact to form a vortex. The vortex can suck in a large amount of dust at the inlet of the first discharge chute 320, thereby improving the dust problem to a certain extent.

[0061] In some embodiments, the plurality of jet holes 344 are arranged at a downward angle to form a downward jetting airflow.

[0062] Specifically, the inner wall 342 includes a first sidewall and a second sidewall. The first sidewall is located close to the outer wall 341, and the second sidewall is located away from the outer wall 341. An air jet hole 344 is formed between the first sidewall and the second sidewall. The upper end of the air jet hole 344 is located on the first sidewall, and the lower end is located on the second sidewall, so that the air jet hole 344 is inclined downward. In this way, multiple air jet holes 344 can spray airflow downward to form a downward vortex airflow, so that the dust at the inlet of the first discharge chute 320 is sucked into the first discharge chute 320 more deeply, thereby improving the dust removal effect.

[0063] To further enhance the suction of the vortex, the jet orifice 344 also forms an angle with the tangent of the corresponding inner wall 342, thereby concentrating the multiple jet streams. Furthermore, the diameter of the jet orifice 344 and the distance between two adjacent jet orifices 344 both affect the formation of the vortex.

[0064] Specifically, the angle between the jet hole 344 and the first sidewall is 28° to 32°, the angle between the jet hole 344 and the tangent of the corresponding inner wall 342 is 43° to 47°, the diameter of the jet hole 344 is 3mm to 5mm, and the distance between two adjacent jet holes 344 is 6mm to 10mm.

[0065] Please see Figure 1 , Figure 2 and Figure 6 In some embodiments, the feeding mechanism 400 includes a third discharge chute 410, a bucket elevator 420, a fourth discharge chute 430 and a belt assembly 440 connected in sequence. The third discharge chute 410 is connected to the underground silo 200 and the belt assembly 440 is connected to the chute assembly 300.

[0066] A vibrating feeder 210 is also installed at the bottom of the underground silo 200 to evenly distribute the material and prevent damage to the bucket elevator 420 due to excessive material distribution. Since the underground silo 200 is located underground, it is connected to the lower part of the bucket elevator 420 via a third discharge chute 410, while the belt conveyor assembly 440 is connected to the upper part of the bucket elevator 420 via a fourth discharge chute 430 to facilitate the transport of metal briquettes to the chute assembly 300. Specifically, the metal briquettes in the underground silo 200 enter the bucket elevator 420 through the third discharge chute 410, the bucket elevator 420 transports the metal briquettes to the upper part, and then transports them to the belt conveyor assembly 440 via the fourth discharge chute 430. The belt conveyor assembly 440 then transports the metal briquettes to the chute assembly 300.

[0067] In some embodiments, there are two molten iron ladles 20 and two chute assemblies 300, with each ladle 20 corresponding to one of the chute assemblies 300. The two molten iron ladles 20 are arranged side by side, and the feeding mechanism 400 can selectively transport the metal material briquette in the underground silo 200 to one of the chute assemblies 300.

[0068] To further improve feeding efficiency and meet high-output demands, the feeding device 10 can feed two ladles of molten iron 20. Specifically, the ladle-turning station has two stations, each with a ladle of molten iron 20. Above each ladle of molten iron 20 is a corresponding chute assembly 300. Both chute assemblies 300 can be connected to belt conveyor assemblies 440. The belt conveyor 440 can be controlled to connect to one of the chute assemblies 300 as needed, transporting the metal pellets to that chute assembly 300, thereby adding the metal pellets to the ladle of molten iron 20 at the target station. This dual-station design can adapt to different production needs and improve production flexibility.

[0069] Of course, each ladle 20 is also equipped with a molten iron transport tank 30 on both sides. Through the combined action of the rotary chute 310 and the first discharge chute 320 and the second discharge chute 330, the precise transport of the metal material briquette is achieved.

[0070] In some embodiments, the belt assembly 440 includes a transfer belt 441 and a reversible belt 442 connected in sequence. The transfer belt 441 is connected to a fourth discharge chute 430, and one end of the reversible belt 442 is connected to one of the chute assemblies 300 and the other end is connected to another chute assembly 300.

[0071] The metal material briquettes in the bucket elevator 420 are transported to the transfer belt 441 via the fourth discharge chute 430. The transfer belt 441 then transports the metal material briquettes to the reversible belt 442, which can selectively transport the metal material briquettes to one of the chute components 300.

[0072] The reversible belt 442 is a belt conveyor that can operate in both directions. It can transport materials in the forward direction and then in the reverse direction, thus achieving bidirectional material transport. Since the two molten iron ladles 20 are arranged side by side, the two chute assemblies 300 are also arranged side by side. Therefore, the reversible belt 442 is placed between the two chute assemblies 300 and connected to them. Thus, when the reversible belt 442 transports materials to one side, it can transport the metal pellets to one of the chute assemblies 300, and when it transports materials to the other side in the opposite direction, it can transport the metal pellets to the other chute assemblies 300. The transport direction of the reversible belt 442 can be controlled as needed.

[0073] It should be noted that, since the metal briquettes enter the chute assembly 300 sequentially via the vibrating feeder 210, bucket elevator 420, transfer belt 441, and reversible belt 442, to avoid material compression during this process, the starting of each device must be spaced approximately 10 seconds apart. For example, the rotary chute 310 is first controlled to rotate to the target position according to requirements, then the reversible belt 442 is started. After 10 seconds, the transfer belt 441 is automatically started, followed by another 10 seconds of automatic start-up of the bucket elevator 420, and then another 10 seconds of automatic start-up of the vibrating feeder 210 to distribute the material, thus initiating the feeding at the ladle station. When the weight of the molten iron transport ladle 30 and the molten iron ladle 20 reaches the set weight, the equipment stops in the reverse order of starting. Each device stops for 10 seconds before the next device can start its stop procedure, until the reversible belt 442 stops. This ensures continuous transport of the metal briquettes and prevents the metal briquettes from being compressed at a certain stage if a device has not yet started.

[0074] To enable material feeding based on demand and facilitate subsequent measurement, statistics, and cost accounting of the added materials, both the molten iron transport ladle 30 and the molten iron ladle 20 require weight control, specifically controlling the weight of the metal briquettes added to them. A belt scale can be installed on the transfer belt 441, allowing the metal briquettes to be weighed as they pass through it, thus enabling weight control via the transfer belt 441.

[0075] To more accurately weigh the metal briquettes, the feeding device 10 may further include a weighing hopper 500 and a vibrating feeder 210 mounted on the mounting frame 100. The weighing hopper 500 is located between the first discharge chute 320 and the molten iron ladle 20, and the vibrating feeder 210 is positioned within the weighing hopper 500. That is, after the metal briquettes exit from the first discharge chute 320, they are first weighed in the weighing hopper 500, and then fed into the molten iron ladle 20 via the vibrating feeder 210. In other words, the weight control of the molten iron transport ladle 30 is achieved through a belt weigher, while the weight control of the molten iron ladle 20 is achieved jointly through the belt weigher and the weighing hopper 500.

[0076] Therefore, to feed the molten iron ladle 20, it is only necessary to first control the rotary chute 310 to rotate to the first discharge chute 320 of one of the stations, and then start the corresponding feeding equipment in sequence. When the metal material briquette enters the first discharge chute 320, the operator can start the electric vibrating feeder at the bottom of the weighing hopper 500 to discharge the molten iron ladle 20.

[0077] In some embodiments, the feeding device 10 further includes a dust hood 600, which is connected to the top of the mounting frame 100 and is correspondingly arranged with respect to the underground silo 200.

[0078] During the process of unloading metal briquettes from the material dump truck 700 into the underground silo 200, a large amount of dust is generated. In order to improve the dust problem during the unloading process of metal briquettes, a dust cover is installed above the underground silo 200. The dust hood 600 is connected to the dust removal pipeline of the transfer station. When the feeding program is started, the system control valve automatically opens to capture the smoke and dust generated during the unloading and feeding process, and avoid fugitive emissions.

[0079] Based on the same inventive concept, this application also provides a method for feeding a tank transfer station, which is implemented by the aforementioned tank transfer station feeding device 10, and includes:

[0080] S100: Connect the chute assembly 300 to the molten iron transport ladle 30, and have the feeding mechanism 400 transport the metal material briquette in the underground silo 200 to the chute assembly 300, so that the metal material briquette falls into the molten iron transport ladle 30 through the chute assembly 300.

[0081] It should be noted that in this step, there is no molten iron in the molten iron transport ladle 30. The metal material briquette is added into the molten iron transport ladle 30 while the ladle is empty.

[0082] S100: Add molten iron to the molten iron transport ladle 30 to melt the metal material ball in the molten iron transport ladle 30, and pour the molten iron in the molten iron transport ladle 30 into the molten iron ladle 20.

[0083] After the molten iron transport ladle 30 is filled with materials, it is transported to the ironworks to add more molten iron. Because the molten iron is at a high temperature and the metal briquette is small in size, it is easy to melt. Therefore, during the process of transporting the molten iron transport ladle 30 from the ironworks to the ladle transfer station, the metal briquette will almost completely melt. After the molten iron transport ladle 30 arrives at the ladle transfer station, the molten iron is poured into the molten iron ladle 20.

[0084] S100: Connect the chute assembly 300 to the molten iron ladle 20, and have the feeding mechanism 400 transport the metal material briquette in the underground silo 200 to the chute assembly 300, so that the metal material briquette falls into the molten iron ladle 20 through the chute assembly 300.

[0085] The molten iron ladle 20 has already melted a large amount of metal pellets, and metal pellets are also added to the molten iron ladle 20, which can greatly increase the amount of molten iron in the molten iron ladle 20.

[0086] Although preferred embodiments of the invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including both the preferred embodiments and all changes and modifications falling within the scope of the invention.

[0087] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A feeding device for a tank transfer station, characterized in that, The feeding device includes: Mounting rack; An underground silo, installed on the mounting frame, is used to store metal briquettes, which are made by pressing dust generated during converter smelting. A chute assembly is installed on the mounting frame and is capable of communicating with a ladle of molten iron; wherein the ladle of molten iron is located underground and is situated on one side of the underground silo; A molten iron transport ladle is installed on the mounting frame and arranged side by side with the molten iron ladle. The chute assembly can communicate with the molten iron transport ladle so that the metal material briquette can enter the molten iron transport ladle. The feeding mechanism is installed on the mounting frame, with one end connected to the underground silo and the other end connected to the chute assembly. The feeding mechanism can transport the metal material briquette in the underground silo to the chute assembly, and the metal material briquette can fall into the molten iron ladle through the chute assembly. The chute assembly includes a rotary chute, a first discharge chute, and a second discharge chute. The rotary chute is located above the first discharge chute and the second discharge chute and is connected to the feeding mechanism. The first discharge chute is aligned with the ladle of molten iron, and the second discharge chute is aligned with the ladle of molten iron. The rotary chute can be selectively connected to either the first discharge chute or the second discharge chute. The molten iron transport ladle is first filled with the metal material briquette at the ladle transfer station, and then the molten iron transport ladle is transported back to the ironworks to load molten iron. After the molten iron transport ladle is filled and returned to the ladle transfer station, the molten iron is poured into the molten iron ladle. During the process of transporting the molten iron transport ladle from the ironworks to the ladle transfer station, at least part of the metal material briquette melts in the molten iron transport ladle. In addition, the metal material briquette is also added to the molten iron ladle through the feeding device, thereby increasing the amount of molten iron in the molten iron ladle.

2. The feeding device for the transfer station according to claim 1, characterized in that, The chute assembly further includes an air seal ring and a vent pipe. The air seal ring is disposed at the inlet of the first discharge chute and the second discharge chute. The air seal ring has an air cavity and a plurality of air jet holes communicating with the air cavity. The vent pipe is communicating with the air cavity. The plurality of air jet holes are disposed on the inner wall of the air seal ring and communicate with the first discharge chute / second discharge chute. When the vent pipe vents air into the air chamber, the multiple jet holes can spray airflow into the first discharge chute / second discharge chute to form a vortex and draw in dust.

3. The feeding device for the transfer station according to claim 2, characterized in that, The jet nozzle is angled downwards.

4. The feeding device for the transfer station according to any one of claims 1-3, characterized in that, The feeding mechanism includes a third discharge chute, a bucket elevator, a fourth discharge chute, and a belt assembly connected in sequence. The third discharge chute is connected to the underground silo, and the belt assembly is connected to the chute assembly.

5. The feeding device for the transfer station according to claim 4, characterized in that, There are two molten iron ladles and two chute assemblies, with each ladle and chute assembly corresponding to the other. The two molten iron ladles are arranged side by side. The feeding mechanism can selectively transport the metal material briquette in the underground silo to one of the chute assemblies.

6. The feeding device for the transfer station according to claim 5, characterized in that, The belt assembly includes a transfer belt and a reversible belt connected in sequence. The transfer belt is connected to the fourth discharge chute. One end of the reversible belt is connected to one of the chute assemblies, and the other end is connected to the other chute assembly.

7. The feeding device for the tank transfer station according to any one of claims 1-3, characterized in that, The metal briquettes are made from dust generated during converter smelting.

8. A feeding method for a tank transfer station, characterized in that, The method is implemented by the tank-turning station feeding device as described in any one of claims 1-7, and the method includes: The chute assembly is connected to the molten iron transport ladle, and the feeding mechanism transports the metal material briquette in the underground silo to the chute assembly, so that the metal material briquette falls into the molten iron transport ladle through the chute assembly; Molten iron is added to the molten iron transport ladle to melt the metal material briquette in the molten iron transport ladle, and the molten iron in the molten iron transport ladle is poured into the molten iron ladle; The chute assembly is connected to the molten iron ladle, and the feeding mechanism transports the metal material briquette in the underground silo to the chute assembly, so that the metal material briquette falls into the molten iron ladle through the chute assembly.

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