Sintering ignition device and control method thereof

Abstract

The invention relates to the technical field of sintering equipment, and discloses a sintering ignition device and a control method thereof. The sintering ignition device comprises a first main burner row and a second main burner row, the first main burner row and the second main burner row are arranged at intervals in the first direction, and each of the first main burner row and the second main burner row comprises a plurality of main burners arranged at intervals in the second direction; the at least one auxiliary burner row is arranged between the first main burner row and the second main burner row, the auxiliary burner row comprises at least one auxiliary burner, and the auxiliary burner and any one main burner are arranged in a staggered mode along the projection of the first direction; the image acquisition mechanism is used for acquiring an image of a charge level between the first main burner row and the auxiliary burner row adjacent to the first main burner row, and the auxiliary burner row is in communication connection with the image acquisition mechanism and can adjust opening and closing of the auxiliary burners based on image information. The sintering ignition device can avoid the problems of more raw materials and increased internal return mine quantity caused by insufficient ignition temperature of a local charge level.

Description

Technical Field

[0001] The present invention relates to the technical field of sintering equipment, and in particular to a sintering ignition device and a control method thereof. Background Art

[0002] The sintering process is the process of heating powdered materials (such as iron ore powder, fuel, flux, etc.) to high temperatures to soften and melt some of their particles. Through physical and chemical reactions such as diffusion and recrystallization between particles, a massive sintered ore with certain strength and metallurgical properties is formed. The sintering process includes steps such as distribution, ignition, ventilation sintering, and cooling. Distribution refers to evenly spreading the mixed material on the sintering machine trolley. The sintering machine trolley then drives the mixed material through the sintering ignition device, which ignites the material surface. The sintering machine trolley then drives the ignited material to the subsequent ventilation system and holding furnace for processing. After the sintered ore is unloaded from the trolley, it is cooled by coolant.

[0003] In the related art, the ignition and sintering device includes two rows of burner assemblies, and the two rows of burners are arranged at intervals along the movement direction of the sintering machine trolley. Each row of burner assemblies includes multiple burners arranged at intervals along the width direction of the trolley. During the actual ignition process, the material surface passes through the two rows of burner rows in turn for ignition. However, during the actual sintering process, the material composition may be unevenly distributed, and there is a distance between two adjacent burners along the width direction of the sintering machine trolley. Therefore, after the material surface passes through the two rows of burner rows for ignition, there are still problems such as insufficient local temperature, excessive raw materials, and increased internal return ore, which leads to poor final sintering quality. Summary of the Invention

[0004] The purpose of the present invention is to propose a sintering ignition device and a control method thereof, which can timely detect the ignition status of the material surface and perform re-ignition at the position to be re-ignited before the material surface leaves the sintering ignition device, thereby avoiding the problem of excessive raw material and increased internal return ore due to insufficient ignition temperature on the local material surface, and will not increase the total length of the sintering ignition device.

[0005] To achieve this object, the present invention adopts the following technical solutions:

[0006] A sintering ignition device is used to sinter a material surface on a trolley moving along a first direction, and the sintering ignition device includes:

[0007] A first main burner row and a second main burner row are arranged at intervals along the first direction, and each of the first main burner row and the second main burner row includes a plurality of main burners arranged at intervals along the second direction;

[0008] at least one auxiliary burner row, disposed between the first main burner row and the second main burner row, the auxiliary burner row comprising at least one auxiliary burner, the auxiliary burner being staggered with respect to a projection of any one of the main burners along the first direction;

[0009] An image acquisition mechanism is used to acquire images of the material surface between the first main burner row and the auxiliary burner row adjacent to the first main burner row. The auxiliary burner row is communicatively connected to the image acquisition mechanism and can adjust the opening and closing of the auxiliary burners based on the image information of the image acquisition mechanism.

[0010] As an optional solution, the auxiliary burner row includes a plurality of auxiliary burners, each of the auxiliary burners is correspondingly configured with a switch valve, and the switch valve is communicatively connected to the image acquisition mechanism.

[0011] As an optional solution, the opening of the switch valve is adjustable.

[0012] As an optional solution, the position of the auxiliary burner along the second direction is adjustable.

[0013] As an optional solution, the sintering ignition device includes two rows of auxiliary burner rows, which are spaced apart along the first direction, and the projections of all auxiliary burners in the two rows of auxiliary burner rows along the first direction do not overlap.

[0014] As an optional solution, the first main burner row is communicatively connected to the image acquisition mechanism and is capable of adjusting the gas flow of the main burners based on the acquired data of the image acquisition mechanism.

[0015] As an optional solution, the image acquisition mechanism can distinguish the material surface into a suitable ignition position, a position to be re-ignited, and an over-melting position based on the color of the image, wherein:

[0016] When the area ratio of the position to be supplemented in an image is greater than a first preset ratio, increasing the gas flow rate of the main burner; and / or

[0017] When the area ratio of the over-melting position on an image is greater than a second preset ratio, the gas flow rate of the main burner is reduced.

[0018] A control method for a sintering ignition device is implemented using the sintering ignition device, and the control method for the sintering ignition device includes:

[0019] Step 10, turning on the first main burner bank and the second main burner bank;

[0020] Step 20: the image acquisition mechanism acquires an image of a material surface between the first main burner row and the auxiliary burner row adjacent to the first main burner row;

[0021] Step 30, obtaining position information of the position to be supplementally burned in a second direction based on the image;

[0022] Step 40: Open the auxiliary burner corresponding to the position to be supplementally burned in the second direction.

[0023] As an optional solution, the control method of the sintering ignition device also includes:

[0024] Step 35, calculating the area ratio of the position to be supplemented with combustion based on the image;

[0025] Step 36 , determining whether the area ratio of the position to be supplementally burned is greater than a first preset ratio, if not, proceeding to step 40 , if so, increasing the gas flow of the main burners of the first main burner row, and proceeding to step 40 .

[0026] In step 31 of the control method for the sintering ignition device, it is determined based on the image whether the proportion of over-melting positions on the material surface is greater than a second preset ratio. If so, the gas flow rate of the first main burner row is reduced and step 40 is entered. If so, step 35 is entered.

[0027] The beneficial effects of the present invention are:

[0028] The sintering ignition device of the present invention can detect whether there are locations on the material surface with insufficient ignition temperature that need to be re-ignited, using images of the material surface captured by an image acquisition mechanism, after the material surface passes through the first main burner row for ignition along a first direction, and before reaching the auxiliary burner row, and re-ignite these locations through the auxiliary burners. In other words, before the material surface leaves the sintering ignition device, the ignition status of the material surface can be detected and re-ignition can be performed on the locations that need to be re-ignited, ensuring that after the material surface passes through the sintering ignition device, there will be no problems such as excessive raw material and increased internal ore return due to insufficient local temperature. Moreover, the sintering ignition device can be modified based on the existing sintering ignition device without additionally increasing the total length of the sintering ignition device, and therefore will not affect the layout of the downstream equipment of the sintering ignition device.

[0029] The control method of the sintering ignition device of the present invention is executed by the above-mentioned sintering ignition device, which can avoid the problems of excessive raw material and increased internal return ore due to insufficient local ignition temperature on the material surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is a side view of a sintering ignition device provided in a specific embodiment of the present invention;

[0031] Figure 2It is a top view of a partial structure of a sintering ignition device provided in a specific embodiment of the present invention;

[0032] Figure 3 This is a flow chart of a control method for a sintering ignition device provided in a specific embodiment of the present invention;

[0033] Figure 4 This is a flow chart of another method for controlling a sintering ignition device provided by a specific embodiment of the present invention;

[0034] Figure 5 This is a flow chart of another method for controlling a sintering ignition device provided in a specific embodiment of the present invention.

[0035] In the picture:

[0036] 10. Trolley;

[0037] 20. First main burner row; 21. Main burner; 22. Main connecting pipe; 23. Main branch pipe;

[0038] 30. Second main burner row;

[0039] 40. Auxiliary burner row; 41. Auxiliary burner; 42. On-off valve; 43. Auxiliary connecting pipe; 44. Auxiliary branch pipe;

[0040] 50. Image acquisition mechanism;

[0041] 60. Gas supply main. DETAILED DESCRIPTION

[0042] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It will be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all structures.

[0043] In the description of the present invention, unless otherwise expressly specified or limited, the terms "connected," "connected," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention in specific circumstances.

[0044] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0045] In the description of this embodiment, the terms "upper," "lower," "right," and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely for ease of description and simplified operation. They do not indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meanings.

[0046] This embodiment provides a sintering ignition device, which can be used to ignite the material surface on the trolley during the sintering process. It should be noted that during the sintering process, the upper surface of the trolley is a long strip surface extending along the first direction, and the material to be sintered is spread flat on the upper surface of the trolley. The trolley can drive the material to move along the first direction so that the upper surface of the material (hereinafter referred to as the material surface) passes under the sintering ignition device. In this embodiment, the width direction of the material surface is the second direction, and the second direction is perpendicular to the first direction.

[0047] like Figure 1 and Figure 2 As shown, the sintering ignition device includes a gas supply manifold 60, a first main burner bank 20, a second main burner bank 30, at least one auxiliary burner bank 40, and an image acquisition mechanism 50. The gas supply manifold 60 is connected to an external gas source and is used to supply gas to the first main burner bank 20, the second main burner bank 30, and the auxiliary burner bank 40. The first main burner bank 20 and the second main burner bank 30 are spaced apart along a first direction, meaning that the material surface on the trolley 10 passes through the first and second main burner banks 20, 30, respectively, for ignition.

[0048] like Figure 1As shown, the first main burner row 20 includes a main connecting pipe 22, multiple main branch pipes 23, and multiple main burners 21. The main connecting pipe 22 is connected to the gas supply main pipe 60. The multiple main burners 21 of the first main burner row 20 are spaced and evenly arranged along the second direction. Each main burner 21 is connected to the main connecting pipe 22 via a main branch pipe 23. The multiple main burners 21 of the first main burner row 20 can uniformly ignite the material surface along the width direction (i.e., the second direction). Optionally, a main valve (not shown in the figure) is provided between the main connecting pipe 22 and the gas supply main pipe 60, so that the multiple main burners 21 of the first main burner row 20 can be opened and closed synchronously. Optionally, the opening size of the main valve is adjustable, so that the gas flow at the main burner 21 is adjustable, and thus the flame size of the main burner 21 is adjustable. Similarly, the second main burner bank 30 also includes a main connecting pipe 22, multiple main branch pipes 23, and multiple main burners 21. The connection relationship between the components of the second main burner bank 30 is the same as that of the first main burner bank 20 and will not be further described here. In this embodiment, the number of main burners 21 in the first main burner bank 20 and the number of main burners 21 in the second main burner bank 30 are the same and are directly opposite each other along the first direction.

[0049] like Figure 1 and Figure 2 As shown, at least one row of auxiliary burner rows 40 is arranged between the first main burner row 20 and the second main burner row 30. The auxiliary burner row 40 includes at least one auxiliary burner 41, which is staggered from the projection of any main burner 21 along the first direction. After the material surface passes through the first main burner row 20, there may be a position with poor ignition effect (usually, the position with poor ignition effect is located between two adjacent main burners 21 in the second direction). By arranging the auxiliary burners 41 staggered from the main burners 21, the material surface position with poor ignition effect along the second direction by the main burner 21 (hereinafter referred to as the position to be supplementary burned) can be ignited, achieving the effect of supplementary burning and ensuring that the material surface ignited by the sintering ignition device is evenly ignited.

[0050] like Figure 1 and Figure 2As shown, the auxiliary burner row 40 includes an auxiliary connecting pipe 43, a plurality of auxiliary branch pipes 44 and a plurality of auxiliary burners 41. The auxiliary connecting pipe 43 is connected to the gas supply main pipe 60. The plurality of auxiliary burners 41 are spaced and evenly arranged along the second direction. Each auxiliary burner 41 is connected to the auxiliary connecting pipe 43 through an auxiliary branch pipe 44. The plurality of auxiliary burners 41 can perform supplementary combustion at different positions to be supplemented along the second direction. Optionally, a switch valve 42 is provided on each auxiliary branch pipe 44, that is, each auxiliary burner 41 can be opened and closed independently, so that the position to be supplemented can be ignited more specifically, gas can be saved, and the problem of over-melting of the material surface due to the high ignition temperature can be avoided. It should be noted that when the material surface is over-melted, a hard crust is formed on the surface of the material surface, which affects the permeability of the material layer and ultimately leads to low sintering production efficiency. Optionally, the opening of the switch valve 42 is adjustable, so that the gas flow rate when the auxiliary burner 41 is turned on can be adjusted, and the flame size of the auxiliary burner 41 during supplementary combustion can be adjusted, while ensuring reliable supplementary combustion at the position to be supplemented, and the temperature will not be too high to cause over-melting of the material surface.

[0051] like Figure 2 As shown, the sintering ignition device in this embodiment includes two rows of auxiliary burner rows 40, and the two rows of auxiliary burner rows 40 are spaced apart along the first direction. The projections of all the auxiliary burners 41 in the two rows of auxiliary burner rows 40 along the first direction do not overlap. In this way, under the condition of limited size in the second direction, as many auxiliary burners 41 as possible can be set to perform supplementary combustion at different positions of the material surface along the second direction, so as to perform supplementary combustion more accurately at different positions to be supplementary burned. In this embodiment, as Figure 2 As shown, two auxiliary burners 41 are disposed between each two adjacent main burners 21 as projected along the first direction. These two auxiliary burners 41 belong to different auxiliary burner rows 40, and the two auxiliary burner rows 40 equally divide the distance between the two adjacent main burners 21 in the second direction. It will be appreciated that in other embodiments, the placement of the auxiliary burners 41 can be flexibly adjusted, as long as they do not overlap with the projection of any main burner 21 along the first direction.

[0052] The image acquisition mechanism 50 is used to capture images of the material surface between the first main burner row 20 and the auxiliary burner row 40 adjacent to the first main burner row 20. The auxiliary burner row 40 is communicatively connected to the image acquisition mechanism 50 and can adjust the opening and closing of the auxiliary burners 41 based on the image information of the image acquisition mechanism 50. Before the material surface passes through the first main burner row 20 along the first direction and reaches the auxiliary burner row 40, the image of the material surface collected by the image acquisition mechanism 50 can determine whether there is a position on the material surface where the ignition temperature is insufficient and to be re-burned, and the position to be re-burned is re-burned by opening the auxiliary burner 41 at the corresponding position. In this way, the ignition state of the material surface is detected and re-burned before the material surface leaves the sintering ignition device, ensuring that the material surface will not have problems such as excessive raw materials and increased internal return ore due to insufficient local temperature after passing through the sintering ignition device. In addition, the sintering ignition device of this embodiment can be directly modified on the basis of the existing sintering ignition device that only includes the first main burner row 20 and the second main burner row 30, without additionally increasing the total length of the sintering ignition device, and therefore will not affect the layout of the downstream equipment of the sintering ignition device.

[0053] In this embodiment, the sintering ignition device further includes a controller, and the image acquisition mechanism 50 and the auxiliary burner bank 40 are both communicatively connected to the controller. In this embodiment, each on-off valve 42 of the auxiliary burner bank 40 is communicatively connected to the image acquisition mechanism 50 via the controller, allowing the controller to selectively adjust the opening and closing and opening degree of each on-off valve 42 based on images captured by the image acquisition mechanism 50.

[0054] Specifically, the controller can set the frequency at which the image acquisition mechanism 50 acquires images. The image acquisition mechanism 50 sends the image to the controller after each image acquisition. After receiving the image, the controller processes and calculates the image to distinguish between the proper ignition position, the position to be supplemented, and the overmelting position. Specifically, the color threshold ranges for the three states of proper ignition, the position to be supplemented, and the overmelting position can be preset. After acquiring the image, the controller extracts the actual color threshold of each position and confirms whether the combustion state of each position is the proper ignition position, the position to be supplemented, or the overmelting position. It is understood that in some embodiments, the opening of the switch valve 42 of the corresponding auxiliary burner 41 can also be adjusted according to the actual color threshold of the position to be supplemented.

[0055] In some embodiments, the position of the auxiliary burner 41 along the second direction is adjustable. Therefore, after the image acquisition mechanism 50 accurately captures the location to be supplemented, it can first identify the auxiliary burner 41 closest to the location to be supplemented along the second direction. Then, it can fine-tune the position of the auxiliary burner 41 so that it is aligned with the location to be supplemented along the second direction, thereby more accurately supplementing the location to be supplemented. Optionally, the auxiliary burner 41 can be driven in the second direction by a motor coupled with a lead screw nut.

[0056] Optionally, the first main burner bank 20 is communicatively connected to the image acquisition mechanism 50 and can adjust the gas flow rate of the main burners 21 based on the data collected by the image acquisition mechanism 50. This ensures that the flames of the main burners 21 of the first main burner bank 20 are appropriate, thereby minimizing the number of locations to be re-ignited and the number of over-melting locations.

[0057] Specifically, when the area ratio of the positions to be supplemented in an image is greater than the first preset ratio, it indicates that the gas supply flow rate of the main burners 21 of the current first main burner row 20 is too small, resulting in too many positions to be supplemented. In this case, appropriately increasing the gas flow rate of the main burners 21 can reduce the area of the positions to be supplemented, thereby avoiding the situation where the auxiliary burners 41 cannot supplement all the positions to be supplemented in a timely manner. Optionally, the first preset ratio can be flexibly set according to actual needs. The specific first preset ratio can be 20%, 30%, 40%, etc., which is not specifically limited here.

[0058] When the area ratio of overmelting locations in an image exceeds the second preset ratio, it indicates that the gas flow rate of the main burners 21 of the first main burner row 20 is too high. Appropriately reducing the gas flow rate of the main burners 21 can prevent excessive overmelting locations. Optionally, the second preset ratio can be flexibly set based on actual needs. Specifically, the second preset ratio can be 5%, 8%, 10%, etc., and is not specifically limited here.

[0059] This embodiment also provides a control method for a sintering ignition device, which is executed by the above-mentioned sintering ignition device. Figure 3 As shown, the control method of the sintering ignition device includes:

[0060] Step 10: Turn on the first main burner bank 20 and the second main burner bank 30;

[0061] Step 20 , the image acquisition mechanism 50 acquires an image of the material surface between the first main burner row 20 and the auxiliary burner row 40 adjacent to the first main burner row 20 ;

[0062] Step 30, obtaining position information of the position to be supplementally burned in the second direction based on the image;

[0063] Step 40: start the auxiliary burner 41 corresponding to the position to be supplementally burned in the second direction.

[0064] The control method of the sintering ignition device of this embodiment uses an image acquisition mechanism 50 to capture an image of the material surface between the first main burner row 20 and the first auxiliary burner row 40, thereby determining whether there is a location on the material surface that is not ignited by the main burner 21 of the first main burner row 20 and is to be re-ignited due to insufficient ignition temperature, and then re-ignites the location to be re-ignited by the auxiliary burner 41, thereby ensuring that the material surface will not have problems such as excessive raw material and increased internal ore return due to insufficient local temperature after passing through the sintering ignition device. The auxiliary burner 41 is located before the second main burner row 30, that is, re-ignition is achieved before the material surface leaves the sintering ignition device, thereby ensuring the ignition quality of the material surface passing through the sintering ignition device. The sintering ignition device of this embodiment can be directly modified based on the existing sintering ignition device that only includes the first main burner row 20 and the second main burner row 30, without additionally increasing the total length of the sintering ignition device, and therefore will not affect the layout of the downstream equipment of the sintering ignition device.

[0065] In step 20, the image acquisition mechanism 50 takes pictures of the material surface passing thereunder at a set frequency and sends the arranged images to the controller for processing. It should be noted that the interval between two adjacent pictures is such that there is no gap between the material surfaces corresponding to the two adjacent images.

[0066] In step 30 , the controller divides each position of the image into an ignition-appropriate position, a position to be re-ignited, and an over-melting position based on the color information of the image.

[0067] In step 40, "corresponding in position in the second direction" means that the projection of the position to be supplemented along the first direction coincides with or is closest to the projection of the auxiliary burner 41 in the first direction, thereby ensuring that the auxiliary burner 41 can supplementally perform supplementary combustion on the position to be supplemented. It is understood that, in a solution where the position of the auxiliary burner 41 is adjustable along the second direction, the controller may first determine the auxiliary burner 41 that is closest to the position to be supplemented in the second direction, and then adjust the position of the auxiliary burner 41 along the second direction so that the position to be supplemented passes directly below the auxiliary burner 41 when moving along the first direction, thereby performing supplementary combustion more reliably.

[0068] like Figure 4 As shown, this embodiment also provides another control method for a sintering ignition device, which, based on the above control method, further includes:

[0069] Step 35, calculating the area ratio of the position to be supplemented with combustion based on the image;

[0070] Step 36 , determining whether the area ratio of the position to be supplementally burned is greater than a first preset ratio, if not, proceeding to step 40 , if so, increasing the gas flow of the main burner 21 of the first main burner row 20 , and proceeding to step 40 .

[0071] In other words, it is first determined whether there are too many positions to be supplemented. If so, it indicates that the gas supply flow rate of the main burners 21 of the first main burner row 20 is too low. In this case, the gas flow rate of the main burners 21 is appropriately increased, thereby reducing the area of the positions to be supplemented in the material surface of the subsequent incoming material, thereby avoiding the situation where the auxiliary burners 41 cannot supplement all the positions to be supplemented in time. At the same time, supplementary combustion is performed on the positions to be supplemented in the material surface corresponding to the image to ensure the ignition quality of the material surface corresponding to the image.

[0072] like Figure 5 As shown, this embodiment further provides a control method for a sintering ignition device, which, based on the above control method, further includes:

[0073] Step 31 , based on the image, determines whether the proportion of over-melting positions on the material surface is greater than a second preset ratio. If so, reduce the gas flow of the first main burner row 20 and proceed to step 40 ; if not, proceed to step 35 .

[0074] That is, if the area ratio of the overmelted positions on an image is less than the second preset ratio, the area ratio of the positions to be supplemented is further used to determine whether the gas flow rate of the main burner 21 needs to be adjusted to resolve the problem of too many positions to be supplemented. If the area ratio of the overmelted positions on an image is greater than the second preset ratio, it indicates that there are too many overmelted positions. In this case, the gas flow rate of the main burner 21 is appropriately reduced, thereby reducing the number of overmelted positions in the material surface of the subsequent incoming material. In this case, the area ratio of the positions to be supplemented is no longer compared with the first preset ratio, and the positions to be supplemented are directly supplemented, avoiding the situation where the main burner 21 is first reduced and then increased, and ultimately the problems of too many positions to be supplemented and too many overmelted positions cannot be resolved. It is understandable that since poor ignition effect can be supplemented by the auxiliary burner 41, but overmelting cannot be further improved, this embodiment prioritizes the determination of the area ratio of the overmelted positions to adjust the gas flow rate of the main burner. When there is no excessive area of overmelted positions, the area ratio of the positions to be supplemented is used to determine whether the gas flow rate of the main burner needs to be adjusted to resolve the problem of too many positions to be supplemented.

[0075] Obviously, the above embodiments of the present invention are merely examples for the purpose of illustrating the present invention, and are not intended to limit the embodiments of the present invention. Those skilled in the art will readily vary the specific embodiments and scope of application based on the principles of the present invention, and this specification should not be construed as limiting the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention are intended to be included within the scope of protection of the claims.

Claims

1. A sintering ignition device for sintering a material surface on a trolley (10) moving in a first direction, characterized in that: The sintering ignition device comprises: A first main burner row (20) and a second main burner row (30) are arranged at intervals along the first direction, and each of the first main burner row (20) and the second main burner row (30) includes a plurality of main burners (21) arranged at intervals along the second direction; At least one auxiliary burner row (40) is arranged between the first main burner row (20) and the second main burner row (30), the auxiliary burner row (40) comprising at least one auxiliary burner (41), the auxiliary burner (41) being staggered with respect to a projection of any one of the main burners (21) along the first direction; An image acquisition mechanism (50) is used to acquire an image of a material surface between the first main burner row (20) and the auxiliary burner row (40) adjacent to the first main burner row (20); the auxiliary burner row (40) is communicatively connected to the image acquisition mechanism (50) and can adjust the opening and closing of the auxiliary burner (41) based on image information from the image acquisition mechanism (50).

2. The sintering ignition device according to claim 1, characterized in that: The auxiliary burner row (40) includes a plurality of auxiliary burners (41), each of the auxiliary burners (41) is correspondingly configured with a switch valve (42), and the switch valve (42) is communicatively connected to the image acquisition mechanism (50).

3. The sintering ignition device according to claim 2, characterized in that: The opening degree of the switch valve (42) is adjustable.

4. The sintering ignition device according to claim 1, characterized in that: The position of the auxiliary burner (41) along the second direction is adjustable.

5. The sintering ignition device according to claim 1, characterized in that: The sintering ignition device comprises two rows of auxiliary burner rows (40), the two rows of auxiliary burner rows (40) are spaced apart along the first direction, and the projections of all auxiliary burners (41) of the two rows of auxiliary burner rows (40) along the first direction do not overlap.

6. The sintering ignition device according to any one of claims 1 to 5, characterized in that: The first main burner row (20) is communicatively connected to the image acquisition mechanism (50) and is capable of adjusting the gas flow of the main burner (21) based on the acquired data of the image acquisition mechanism (50).

7. The sintering ignition device according to claim 6, characterized in that: The image acquisition mechanism (50) can distinguish the material surface into an ignition-appropriate position, a position to be re-ignited, and an over-melting position based on the color of the image, wherein: When the area ratio of the position to be supplemented in an image is greater than a first preset ratio, increasing the gas flow rate of the main burner (21); and / or When the area ratio of the over-melting position on an image is greater than a second preset ratio, the gas flow rate of the main burner (21) is reduced.

8. A method for controlling a sintering ignition device, characterized in that: The sintering ignition device according to any one of claims 1 to 7 is used for execution, and the control method of the sintering ignition device includes: Step 10, opening the first main burner bank (20) and the second main burner bank (30); Step 20, the image acquisition mechanism (50) acquires an image of the material surface between the first main burner row (20) and the auxiliary burner row (40) adjacent to the first main burner row (20); Step 30, obtaining position information of the position to be supplementally burned in a second direction based on the image; Step 40: Open the auxiliary burner (41) corresponding to the position to be supplementally burned in the second direction.

9. The control method of the sintering ignition device according to claim 8, characterized in that: Also includes: Step 35, calculating the area ratio of the position to be supplemented with combustion based on the image; Step 36, judging whether the area ratio of the position to be supplemented with combustion is greater than a first preset ratio, if not, proceeding to step 40, if yes, increasing the gas flow of the main burner (21) of the first main burner row (20), and proceeding to step 40.

10. The control method of the sintering ignition device according to claim 9, characterized in that: Also includes: Step 31, based on the image, determines whether the proportion of over-melting positions on the material surface is greater than a second preset ratio. If so, reduce the gas flow of the first main burner row (20) and enter step 40. If not, enter step 35.

Images