Iron tapping device of submerged arc furnace

Abstract

The utility model relates to the technical field of smelting equipment, and discloses a submerged arc furnace tapping device which comprises a first material channel, a second material channel, a first tank body, a second tank body and a public tank body, the feeding end of the first material channel is communicated with the first iron hole, one discharging end of the first material channel is communicated with the first tank body, and the other discharging end of the first material channel is communicated with the public tank body, so that when molten iron is discharged from the first iron hole, the molten iron is discharged into the first tank body and the public tank body along the first material channel; the feeding end of the second material channel is communicated with the second iron hole, one discharging end of the second material channel is communicated with the second tank body, and the other discharging end of the second material channel is communicated with the public tank body, so that when molten iron is discharged from the second iron hole, the molten iron is discharged into the second tank body and the public tank body along the second material channel. Two tanks of molten iron can be discharged through one-time hole opening and plugging operation, the hole opening and plugging frequency is effectively reduced, the hole opening and plugging interval is indirectly prolonged, it is guaranteed that stemming in an iron hole has enough time to reach the ideal sintering strength, the service life of the iron hole is prolonged, and then the service life of a submerged arc furnace is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of smelting equipment, in particular to an iron tapping device for a submerged arc furnace. Background Art

[0002] Submerged arc furnaces, also known as electric arc furnaces or resistance furnaces, are primarily used for reducing and smelting raw materials such as ores, carbonaceous reducing agents, and solvents, primarily for the production of ferroalloys. Their primary function is to heat metal or ore within the furnace to a certain temperature and melting point, thereby achieving the desired smelting effect. These furnaces are characterized by the use of carbonaceous or magnesia refractory linings and self-heating electrodes. These electrodes are inserted into the charge to create a submerged arc. The arc energy and the current flowing through the charge, generated by the charge's resistance, are used to melt the metal. This type of industrial furnace operates continuously, with feed added sequentially and iron and slag tapped intermittently.

[0003] Currently, circular submerged arc furnaces are equipped with two tapholes. These tapholes play a crucial role in the entire production process. They are the outlet through which melted metal or ore is discharged from the furnace. During production, the two tapholes are used in rotation, with one closed (only when maintenance is required or the cycle is reached). The taphole's tapping cycle is limited by the iron temperature and the properties of the taphole clay. Only after the taphole is blocked and the clay has been sintered at low temperatures by the residual heat within the eye, ensuring a good filling effect and achieving the desired sintering strength, can the eye be reopened.

[0004] Our company's original ore hot furnace produces 180-230 tons of medium-nickel ferromagnetic iron per day. The ladle capacity is capped at 50 tons, and each tapping is between 40 and 45 tons. Each tapping requires a taphole opening, with at least five to six taphole openings per day. Due to market factors, we've switched to refining low-nickel ferromagnetic iron. With the same amount of raw ore, we're producing approximately twice as much low-nickel ferromagnetic iron as medium-nickel ferromagnetic iron, reaching a production rate of 350-450 tons per day. Each time we tap low-nickel ferromagnetic iron, we open one taphole, release a can of molten iron, then plug it. The full can is then transferred to the next process step, and the empty ladle is transferred to the furnace. Once the power consumption for the next batch of low-nickel ferromagnetic iron is reached (each tapping process only allows for the discharge of one ladle, shortening the smelting time), we open the taphole again, release a second can of molten iron, and then plug it again, continuing this process in a continuous sequence. Due to the increase in the production of low-nickel molten iron, the time it takes to smelt a ladle of molten iron is shorter than that of medium-nickel molten iron, and the number of iron eye openings per day will reach more than 8 to 10. The interval between iron eye opening and plugging is short. Frequent opening and plugging operations cannot ensure that the taphole clay filling the iron eye has a good filling effect on the iron eye and achieves the ideal sintering strength (the technical requirements of the taphole clay manufacturer are that the taphole clay sintering time must be no less than 1 hour to achieve optimal performance). This will greatly reduce the life of the iron eye. In addition, the corrosion of the iron eye by high-temperature molten iron makes the iron eye the weakest link in the entire submerged arc furnace body. The service life of the iron eye determines the life of the submerged arc furnace. Once the iron eye is damaged, the submerged arc furnace will not be able to operate. Utility Model Content

[0005] The purpose of the utility model is to provide a tapping device for an ore-forming furnace, so as to solve the problems mentioned in the above background technology such as frequent opening of the iron eye, which affects the service life of the iron eye and the ore-forming furnace.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A submerged arc furnace tapping device, the submerged arc furnace having a first iron eye and a second iron eye spaced apart, comprising: a first material channel, a second material channel, a first tank body, a second tank body, and a common tank body; the feed end of the first material channel is in communication with the first iron eye, the first material channel having two discharge ends, one of which is in communication with the first tank body, and the other of which is in communication with the common tank body, so that when the first iron eye taps molten iron, the molten iron is discharged into the first tank body and the common tank body along the first material channel; the feed end of the second material channel is in communication with the second iron eye, the second material channel having two discharge ends, one of which is in communication with the second tank body, and the other of which is in communication with the common tank body, so that when the second iron eye taps molten iron, the molten iron is discharged into the second tank body and the common tank body along the second material channel. Through this arrangement, two tanks of molten iron can be tapped out in one tapping operation, reducing the frequency of tapping, extending the life of the tapping, reducing the use of consumables such as tapping mud, drill bits, and drill rods, reducing tapping operations, and reducing labor intensity.

[0008] Furthermore, the first material channel includes a first main material channel and a first auxiliary material channel; the first auxiliary material channel includes two first branch material channels, the first end of the first main material channel is connected to the first iron eye, the two first branch material channels are respectively located on both sides of the second end of the first main material channel, and the first ends of the two first branch material channels are both connected to the second end of the first main material channel, and the second ends of the two first branch material channels are respectively connected to the first tank body and the common tank body. Through this setting, when the first iron eye is opened, the molten iron flows into the first tank body and the common tank body respectively through the first main material channel and the two first branch material channels, so that two tanks of molten iron can be discharged in one eye opening and blocking operation, effectively reducing the number of eye opening and blocking times, reducing the frequency of opening and blocking furnace eyes, indirectly extending the eye opening and blocking interval, ensuring that the gun mud in the iron eye has enough time to reach the ideal sintering strength, extending the service life of the iron eye and thus extending the furnace life of the ore furnace.

[0009] Furthermore, the first end of the first main material channel is higher than the second end of the first main material channel, so that the molten iron can flow smoothly into the second end of the first main material channel through the first end of the first main material channel; the first end of the first branch material channel is higher than the second end of the first branch material channel, so that the molten iron can flow smoothly into the second end of the first branch material channel through the first end of the first branch material channel.

[0010] Furthermore, the second material channel includes a second main material channel and a second auxiliary material channel; the second auxiliary material channel includes two second branch material channels, the first end of the second main material channel is connected to the second iron eye, the two second branch material channels are respectively located on both sides of the second end of the second main material channel, and the first ends of the two second branch material channels are both connected to the second end of the second main material channel, and the second ends of the two second branch material channels are respectively connected to the second tank body and the common tank body. Through this setting, when the second iron eye is opened, the molten iron flows into the second tank body and the common tank body through the second main material channel and the two second branch material channels respectively, so that two tanks of molten iron can be discharged in one eye opening and plugging operation, effectively reducing the number of eye opening and plugging operations, reducing the frequency of opening and plugging furnace eyes, indirectly extending the eye opening and plugging interval, ensuring that the gun mud in the iron eye has enough time to reach the ideal sintering strength, extending the service life of the iron eye and thus extending the furnace life of the smelting furnace.

[0011] Furthermore, the first end of the second main material channel is higher than the second end of the second main material channel, so that the molten iron can flow smoothly into the second end of the second main material channel through the first end of the second main material channel; the first end of the second branch material channel is higher than the second end of the second branch material channel, so that the molten iron can flow smoothly into the second end of the second branch material channel through the first end of the second branch material channel.

[0012] Furthermore, the interval between the first main material channel and the second main material channel gradually increases in a direction away from the submerged arc furnace, so as to facilitate the arrangement of a common tank body.

[0013] Furthermore, the first and second auxiliary material channels are both distributed along the first direction, and a gap is provided between the first and second auxiliary material channels for mounting a common tank. This gap allows for the simultaneous parking of two ladle transport vehicles, both connected at both ends, so that a tractor can directly pull and remove them at once. During tapping, the two transport vehicles are parked in corresponding positions based on the positions of the openings, with the ladle openings on the two ladle transport vehicles corresponding to the first tank position and the common tank position below the two first branch channels belonging to the first branch channel above, or the common tank position and the second tank position below the second branch channel belonging to the second branch channel.

[0014] Furthermore, the first main material channel includes a first deflected section and a first transition section, and the second main material channel includes a second deflected section and a second transition section. The first deflected section is connected to the first iron eye, and the second deflected section is connected to the second iron eye. The interval between the first deflected section and the second deflected section gradually increases in the direction away from the submerged arc furnace. One end of the first transition section is connected to the first deflected section, and the other end is connected to the first auxiliary material channel. One end of the second transition section is connected to the second deflected section, and the other end is connected to the second auxiliary material channel. This arrangement facilitates the installation of the common tank.

[0015] Furthermore, the common tank body is located between the first tank body and the second tank body, and there is a gap between the first tank body and the common tank body, and between the second tank body and the common tank body. This gap can be used to arrange the first auxiliary material channel and the second auxiliary material channel.

[0016] Furthermore, the interval between the first tank body and the common tank body is greater than the length of two ladle transport vehicles. This arrangement ensures that the two ladle transport vehicles connected at both ends can be pulled in and out at one time, making it convenient to transport molten iron and place empty ladles.

[0017] Furthermore, the distance between the second tank body and the common tank body is greater than the length of two ladle transport vehicles. This arrangement ensures that the two ladle transport vehicles connected at both ends can be pulled in and out at one time, making it convenient to transport molten iron and place empty ladles.

[0018] The utility model has the following advantages over the prior art:

[0019] The utility model provides a ore-splitting furnace iron-discharging device, which, by setting a common tank body and improving the first and second material channels, enables the first iron eye to be connected to the first tank body and the common tank body respectively through the first material channel, and the second iron eye to be connected to the second tank body and the common tank body respectively through the second material channel. It is realized that one eye opening and plugging operation can discharge two cans of molten iron, so that the ore-splitting furnace smelting volume meets the molten iron of two ladles before opening the iron eye. Compared with the previous smelting volume meeting the molten iron of one ladle, the iron eye opening and plugging operation is required, and the eye opening and plugging interval is extended, ensuring that the taphole mud in the iron eye has enough time to reach the ideal sintering strength, effectively reducing the number of eye opening and plugging, reducing the frequency of opening and plugging furnace eyes, extending the life of the iron-splitting eye and the ore-splitting furnace, and at the same time reducing the use of taphole mud, drill bits, drill rods and other consumables, reducing the opening and plugging operation work, and reducing labor intensity. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic structural diagram of a submerged arc furnace iron tapping device in an embodiment of the present utility model;

[0021] Figure 2 This is a schematic structural diagram of the first main material channel in the iron tapping device of the submerged arc furnace in an embodiment of the present utility model;

[0022] Figure 3 This is a structural schematic diagram of the first distribution channel in the iron tapping device of the submerged arc furnace in an embodiment of the present utility model;

[0023] In the figure: 1. Submerged arc furnace; 2. First iron eye; 3. Second iron eye; 4. First material channel; 5. Second material channel; 6. First tank body; 7. Second tank body; 8. Common tank body; 9. First main material channel; 901. First deflected section; 902. First transfer section; 10. First branch material channel; 11. Second main material channel; 1101. Second deflected section; 1102. Second transfer section; 12. Second branch material channel; 13. Eye plugging machine; 14. Eye opening machine. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] It should be noted that, in the description of the present invention, the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as a limitation on the present invention.

[0026] In addition, it should be understood that for the convenience of description, the sizes of the various components shown in the drawings are not drawn according to the actual scale.

[0027] It should be noted that like numbers and letters represent similar items in the following figures, so once an item is defined or described in one figure, it will not need to be further discussed and described in detail in the description of the subsequent figures.

[0028] Example:

[0029] like Figures 1 to 3 As shown, the ore-forming furnace 1 has a first iron eye 2 and a second iron eye 3 arranged at intervals. The utility model is a ore-forming furnace tapping device, comprising: a first material channel 4, a second material channel 5, a first tank body 6, a second tank body 7 and a common tank body 8; the feed end of the first material channel 4 is connected to the first iron eye 2, and the first material channel 4 has two discharge ends, one of which is connected to the first tank body 6 and the other is connected to the common tank body 8, so that when the first iron eye 2 taps molten iron, the molten iron is discharged into the first tank body 6 and the common tank body 8 along the first material channel 4; the feed end of the second material channel 5 is connected to the second iron eye 3, and the second material channel 5 has two discharge ends, one of which is connected to the second tank body 7 and the other is connected to the common tank body 8, so that when the second iron eye 3 taps molten iron, the molten iron is discharged into the second tank body 7 and the common tank body 8 along the second material channel 5. In this embodiment, the common tank body 8 is located between the first tank body 6 and the second tank body 7 to save space occupancy and facilitate the arrangement of the first material channel 4 and the second material channel 5. The utility model increases the common tank body 8 and improves the first material channel 4 and the second material channel 5, so that the iron eye can be opened in one time by opening the plugging operation and producing two cans of molten iron. The iron eye can be opened only after the smelting amount of the ore-melting furnace meets the requirements of two ladles of molten iron. Compared with the previous method of opening the iron eye only when the smelting amount meets the requirements of one ladle of molten iron, the utility model reduces the number of eye openings and plugging operations, extends the eye opening and plugging interval, ensures that the taphole mud in the iron eye has enough time to reach the ideal sintering strength, reduces the frequency of opening and plugging furnace eyes, extends the service life of the iron eye, reduces the use of taphole mud, drill bits, drill rods and other consumables, reduces the opening and plugging operations, and reduces labor intensity.

[0030] like Figure 1-Figure 3As shown, the first material channel 4 includes a first main material channel 9 and a first auxiliary material channel; the first auxiliary material channel includes two first branch material channels 10, the first end of the first main material channel 9 is connected to the first iron eye 2, the two first branch material channels 10 are respectively located on both sides of the second end of the first main material channel 9, and the first ends of the two first branch material channels 10 are both connected to the second end of the first main material channel 9, and the second ends of the two first branch material channels 10 are respectively connected to the first tank body 6 and the common tank body 8. Through this setting, when the first iron eye 2 is opened by the eye opening machine 14, the molten iron flows into the first tank body 6 and the common tank body 8 respectively through the first main material channel 9 and the two first branch material channels 10, so that two tanks of molten iron can be discharged in one eye opening and blocking operation, which prolongs the smelting time of the electric arc furnace, effectively reduces the number of eye opening and blocking times, and reduces the frequency of eye opening and blocking.

[0031] Specifically, the first end of the first main material channel 9 is higher than the second end of the first main material channel 9. The first main material channel 9 is tilted, so that the molten iron can flow smoothly into the second end of the first main material channel 9 through the first end of the first main material channel 9; the first end of the first branch material channel 10 is higher than the second end of the first branch material channel 10. The first branch material channel 10 is tilted, so that the molten iron can flow smoothly into the second end of the first branch material channel 10 through the first end of the first branch material channel 10, and then flow into the first tank body 6 and the common tank body 8 accordingly.

[0032] In this embodiment, the structure of the second material channel 5 is the same as that of the first material channel 4. The second material channel 5 includes a second main material channel 11 and a second auxiliary material channel; the second auxiliary material channel includes two second branch material channels 12, the first end of the second main material channel 11 is connected to the second iron eye, the two second branch material channels 12 are respectively located on both sides of the second end of the second main material channel 11, and the first ends of the two second branch material channels 12 are both connected to the second end of the second main material channel 11, and the second ends of the two second branch material channels 12 are respectively connected to the second tank body 7 and the common tank body 8. Through this setting, when the second iron eye 3 is opened by the eye opening machine 14, the molten iron flows into the second tank body 7 and the common tank body 8 respectively through the second main material channel 11 and the two second branch material channels 12, so that two tanks of molten iron can be discharged in one eye opening and blocking operation, effectively reducing the number of eye opening and blocking times, reducing the frequency of opening and blocking furnace eyes, indirectly extending the eye opening and blocking interval, ensuring that the gun mud in the iron eye has enough time to reach the ideal sintering strength, extending the service life of the iron eye and thus extending the furnace life of the ore furnace.

[0033] Specifically, the first end of the second main material channel 11 is higher than the second end of the second main material channel 11, so that the molten iron can flow smoothly into the second end of the second main material channel 11 through the first end of the second main material channel 11; the first end of the second branch material channel 12 is higher than the second end of the second branch material channel 12, so that the molten iron can flow smoothly into the second end of the second branch material channel 12 through the first end of the second branch material channel 12. The second ends of the two second branch material channels 12 are connected to the second tank body 7 and the common tank body 8 respectively. Through this setting, when the second iron eye 3 is opened by the eye opening machine 14, the molten iron flows into the second tank body 7 and the common tank body 8 respectively through the second main material channel 11 and the two second branch material channels 12, so that two tanks of molten iron can be discharged in one eye opening and plugging operation, which effectively reduces the number of eye opening and plugging operations, reduces the frequency of opening and plugging furnace eyes, and indirectly extends the eye opening and plugging interval, ensuring that the gun mud in the iron eye has enough time to reach the ideal sintering strength.

[0034] Specifically, the inclination of the first main material channel 9, the first branch material channel 10, the second main material channel 11 and the second branch material channel 12 is not specifically limited, nor is it required to be consistent. During implementation, they can be adjusted according to the space of the factory.

[0035] In another embodiment, the structure of the second material channel 5 may be different from that of the first material channel 4. In specific implementation, the structures of the first material channel 4 and the second material channel 5 are improved accordingly according to the plant space, as long as it is ensured that two cans of molten iron can be discharged when the iron eye is opened once.

[0036] In this embodiment, the interval between the first main material channel 9 and the second main material channel 11 gradually increases in the direction away from the submerged arc furnace 1 to facilitate the arrangement of the common tank body 8 .

[0037] Specifically, such as Figure 2 and Figure 3 As shown, the first main material channel 9 includes a first deflected section 901 and a first transition section 902, and the second main material channel 11 includes a second deflected section 1101 and a second transition section 1102. The first deflected section 901 is connected to the first iron eye 2, and the second deflected section 1101 is connected to the second iron eye 3. The spacing between the first deflected section 901 and the second deflected section 1101 gradually increases in the direction away from the ore-forming furnace 1. One end of the first transition section 902 is connected to the first deflected section 901, and the other end is connected to the first auxiliary material channel. One end of the second transition section 1102 is connected to the second deflected section 1101, and the other end is connected to the second auxiliary material channel. By gradually increasing the spacing between the first deflected section 901 and the second deflected section 1101 in the direction away from the ore-forming furnace 1, space is reserved for arranging the common tank body and the first and second auxiliary material channels.

[0038] In this embodiment, considering the limited space of the factory, in the process of improving the first material channel 4 and the second material channel 5, the first auxiliary material channel and the second auxiliary material channel are arranged along the first direction, the first tank body 6, the common tank body 8 and the second tank body 7 are also distributed along the first direction, and the common tank body 8 is arranged in the middle position between the first tank body 6 and the second tank body 7, the first auxiliary material channel is located between the first tank body 6 and the common tank body 8, and the second auxiliary material channel is located between the common tank body 8 and the second tank body 7.

[0039] Furthermore, the common tank body 8 is located between the first tank body 6 and the second tank body 7, and there is a gap between the first tank body 6 and the common tank body 8, and between the second tank body 7 and the common tank body 8. This gap can be used to arrange the first auxiliary material channel and the second auxiliary material channel, and can also facilitate the operation of the ladle transport vehicle. This gap can park two ladle transport vehicles connected at both ends at the same time, so that the tractor can directly pull them away at one time. When tapping iron, the two transport vehicles are parked at corresponding positions according to the positions of the opened iron eyes, and the ladle mouths on the two ladle transport vehicles correspond to the first tank position and the common tank position below the two first branch material channels belonging to the upper first iron eye, or the common tank position and the second tank position below the second branch material channel belonging to the second iron eye.

[0040] Specifically, the spacing between the first tank body 6 and the common tank body 8, and the spacing between the second tank body 7 and the common tank body 8, are both greater than the length of two ladle transport vehicles. This spacing ensures that the two ladle transport vehicles connected at both ends can be pulled in and out at once, facilitating the transportation of molten iron and the placement of empty ladles.

[0041] When implementing:

[0042] When the ore-fired furnace 1 completes smelting and is ready to discharge molten iron, the first iron eye 2 is opened by the eye-opening machine 14. At this time, the molten iron flows into the first tank body 6 and the common tank body 8 along the first material channel 4. After the first tank body 6 and the common tank body 8 are filled, the first tank body 6 and the common tank body 8 are transported to the next production process by the ladle transport vehicle. The first iron eye 2 is sealed by the eye-blocking machine 13. When the power consumption for refining the next furnace of low-nickel molten iron is reached, the first iron eye is opened again. After discharging two tanks of molten iron, the eye-blocking operation is performed, and the operation is carried out continuously in sequence. During production, the first and second iron eyes are used in rotation, and each iron eye is equipped with a set of eye-opening machines and eye-blocking machines. When the first iron eye needs maintenance or reaches the end of its cycle, the second iron eye is replaced to discharge molten iron. When the second iron eye is discharging molten iron, the second iron eye 3 is opened, and the molten iron flows into the second tank body 7 and the common tank body 8 along the second material channel 5. After the second tank body 7 and the common tank body 8 are filled, they are transported to the next process by the ladle transport vehicle and operated continuously in sequence until the rotation cycle is reached and the first iron eye is replaced to discharge molten iron.

[0043] By adopting this device, two cans of molten iron can be discharged in one eye opening operation, so that the molten iron output of the ore-melting furnace can be opened only after the molten iron output meets the requirements of two ladles of molten iron. Compared with the previous method of opening the eye only when one ladle of molten iron is satisfied, the eye opening interval is extended, the frequency of opening the furnace eye is reduced, the life of the eye is extended, the use of consumables such as taphole mud, drill bits, and drill rods is reduced, the opening and blocking operations are reduced, and the labor intensity is reduced.

[0044] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A tapping device for a submerged arc furnace, the submerged arc furnace having a first iron eye and a second iron eye spaced apart, characterized in that: include: A first material channel, a second material channel, a first tank body, a second tank body and a common tank body; the feed end of the first material channel is connected to the first iron eye, and the first material channel has two discharge ends, one of which is connected to the first tank body, and the other is connected to the common tank body, so that when the first iron eye discharges molten iron, the molten iron is discharged into the first tank body and the common tank body along the first material channel; the feed end of the second material channel is connected to the second iron eye, and the second material channel has two discharge ends, one of which is connected to the second tank body, and the other is connected to the common tank body, so that when the second iron eye discharges molten iron, the molten iron is discharged into the second tank body and the common tank body along the second material channel.

2. The iron tapping device of a submerged arc furnace according to claim 1, characterized in that: The first material channel includes a first main material channel and a first auxiliary material channel; the first auxiliary material channel includes two first branch material channels, the first end of the first main material channel is connected to the first iron eye, the two first branch material channels are respectively located on both sides of the second end of the first main material channel, and the first ends of the two first branch material channels are both connected to the second end of the first main material channel, and the second ends of the two first branch material channels are respectively connected to the first tank body and the common tank body.

3. The iron tapping device of a submerged arc furnace according to claim 2, characterized in that: The first end of the first main material channel is higher than the second end of the first main material channel, so that the molten iron can flow smoothly into the second end of the first main material channel through the first end of the first main material channel; the first end of the first branch material channel is higher than the second end of the first branch material channel, so that the molten iron can flow smoothly into the second end of the first branch material channel through the first end of the first branch material channel.

4. The iron tapping device of a submerged arc furnace according to claim 2, characterized in that: The second material channel includes a second main material channel and a second auxiliary material channel; the second auxiliary material channel includes two second branch material channels, the first end of the second main material channel is connected to the second iron eye, the two second branch material channels are respectively located on both sides of the second end of the second main material channel, and the first ends of the two second branch material channels are both connected to the second end of the second main material channel, and the second ends of the two second branch material channels are respectively connected to the second tank body and the common tank body.

5. The iron tapping device of a submerged arc furnace according to claim 4, characterized in that: The first end of the second main material channel is higher than the second end of the second main material channel, so that the molten iron can flow smoothly into the second end of the second main material channel through the first end of the second main material channel; the first end of the second branch material channel is higher than the second end of the second branch material channel, so that the molten iron can flow smoothly into the second end of the second branch material channel through the first end of the second branch material channel.

6. The iron tapping device of a submerged arc furnace according to claim 4, characterized in that: The interval between the first main material channel and the second main material channel gradually increases in a direction away from the submerged arc furnace, so as to facilitate the arrangement of a common tank body.

7. The iron tapping device of a submerged arc furnace according to claim 6, characterized in that: The first main material channel includes a first deflected section and a first transition section, the second main material channel includes a second deflected section and a second transition section, the first deflected section is correspondingly connected to the first iron eye, the second deflected section is correspondingly connected to the second iron eye, and the interval between the first deflected section and the second deflected section gradually increases in the direction away from the smelting furnace, one end of the first transition section is connected to the first deflected section, and the other end thereof is connected to the first auxiliary material channel, one end of the second transition section is connected to the second deflected section, and the other end thereof is connected to the second auxiliary material channel.

8. The iron tapping device of a submerged arc furnace according to claim 1, characterized in that: The common tank body is located between the first tank body and the second tank body, and there is a gap between the first tank body and the common tank body, and between the second tank body and the common tank body.

9. The iron tapping device of a submerged arc furnace according to claim 8, characterized in that: The interval between the first tank body and the common tank body is greater than the length of two ladle transport vehicles.

10. The iron tapping device of a submerged arc furnace according to claim 8, characterized in that: The interval between the second tank body and the common tank body is greater than the length of two ladle transport vehicles.

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