A hearth activity monitoring method, device, equipment and medium

Abstract

The application discloses a hearth activity monitoring method, device, equipment and medium, comprising: after the blast furnace is blown down, according to the tuyere position parameter and the tuyere structure size parameter of the blast furnace and the center position parameter of the hearth in the blast furnace, the region size parameter is determined to constitute the first target region of the hearth; according to the second pig iron quality proportion of the second target region and the third pig iron quality proportion of the third target region, the first target difference value is determined; according to the coke average particle size, the slag iron mass ratio, the slag mass proportion in the first target region and the first target difference value, the activity level of the hearth is determined. Since the coke average particle size, the slag iron mass ratio, the slag mass proportion and the first target difference value are easy to obtain, the activity level of the hearth can be quickly determined, which means that the current activity of the hearth can be quickly determined, the monitoring efficiency of the hearth activity is improved, and theoretical support is provided for relevant personnel to adjust the activity of the hearth.

Description

Technical Field

[0001] This invention relates to the field of blast furnace smelting, and in particular to a method, apparatus, equipment, and medium for monitoring hearth activity. Background Technology

[0002] Currently, the advantages of using blast furnaces for ironmaking mainly include the wide availability of raw materials and fuels, high heat utilization efficiency of blast furnaces, and low production costs. Therefore, blast furnace ironmaking remains the most important means of iron production, with more than 90% of finished molten iron produced by blast furnaces.

[0003] In blast furnace ironmaking, the activity of the blast furnace hearth is closely related to the blast furnace's production efficiency. Low hearth activity can lead to decreased blast furnace output and increased fuel consumption. Currently, the process for assessing hearth activity is overly complex and time-consuming, potentially delaying adjustments and consequently causing further declines in output and fuel consumption. Therefore, improving the efficiency of hearth activity monitoring is a pressing issue that needs to be addressed. Summary of the Invention

[0004] This application provides a method, apparatus, device, and medium for monitoring hearth activity, which solves the technical problem of low monitoring efficiency of hearth activity in the prior art and achieves the technical effect of improving the monitoring efficiency of hearth activity.

[0005] Firstly, this application provides a method for monitoring hearth activity, the method comprising:

[0006] After the blast furnace is shut down, the area size parameters are determined based on the tuyere position parameters, tuyere structural size parameters, and the center position parameters of the hearth inside the blast furnace to form the first target area of ​​the hearth. The first target area is parallel to the plane where the bottom of the hearth is located. The first target area includes a second target area and a third target area. The second target area is the tuyere swirling area in the first target area, and the third target area is the area in the first target area excluding the tuyere swirling area.

[0007] The difference between the first target and the second target area is determined based on the proportion of the second pig iron mass in the second target area and the proportion of the third pig iron mass in the third target area.

[0008] The hearth activity level is determined based on the average coke particle size, slag-iron mass ratio, slag mass ratio, and the difference between the first target and the first target value within the first target area.

[0009] Furthermore, based on the average coke particle size, slag-to-iron mass ratio, slag mass ratio, and the difference from the first target value within the first target area, the hearth activity level is determined, including:

[0010] When the average coke particle size is greater than 12mm and less than 20mm, the slag-to-iron mass ratio is greater than 4:1 and less than 8:1, and the slag mass percentage is greater than 4.5%, the hearth activity level is determined to be the first target level, which has the highest activity.

[0011] Furthermore, based on the average coke particle size, slag-to-iron mass ratio, slag mass ratio, and the difference from the first target value within the first target area, the hearth activity level is determined, including:

[0012] When the average coke particle size is greater than 6mm and less than 12mm, the slag-iron mass ratio is greater than 4:1 and less than 8:1, the slag mass percentage is greater than 4.5%, and the difference between the first target and the second target is less than 40%, the activity level is the second target level, which is lower than the activity level of the first target level.

[0013] Furthermore, based on the average coke particle size, slag-to-iron mass ratio, slag mass ratio, and the difference from the first target value within the first target area, the hearth activity level is determined, including:

[0014] When the average coke particle size is greater than 6mm and less than 12mm, the slag-to-iron mass ratio is greater than 8:1, the slag mass percentage is less than 4.5%, and the difference between the first target and the second target is greater than 40%, the activity level is the third target level, which is lower than the activity level of the second target level.

[0015] Further, the average particle size of coke within the first target area is determined, including:

[0016] Based on the particle size of each coke in the first target area and multiple preset particle size ranges, determine the preset particle size range in which each coke is located.

[0017] Based on the total mass of all coke in the first target area and the mass of coke corresponding to each preset particle size range, determine the mass percentage of coke corresponding to each preset particle size range.

[0018] Based on the maximum and minimum values ​​of each preset granularity range, determine the preset average granularity corresponding to each preset granularity range.

[0019] The average particle size of coke in the first target area is determined based on the preset average particle size of each preset particle size range and the coke mass ratio of each preset particle size range.

[0020] Furthermore, based on the proportion of second pig iron in the second target region and the proportion of third pig iron in the third target region, the difference in the first target is determined, including:

[0021] Based on the material quality and pig iron quality in the second target area, determine the proportion of pig iron quality in the second target area.

[0022] Based on the material quality and pig iron quality in the third target area, determine the proportion of pig iron quality in the third target area.

[0023] The first target difference is determined based on the difference between the second and third pig iron mass ratios.

[0024] Further, the slag-iron mass ratio within the first target area is determined, including:

[0025] The slag-iron mass ratio within the first target area is determined based on the pig iron mass and slag mass within the first target area.

[0026] Secondly, this application provides a furnace hearth activity monitoring device, the device comprising:

[0027] The first region determination module is used to determine the region size parameters after the blast furnace is shut down, based on the tuyere position parameters, tuyere structural size parameters, and the center position parameters of the hearth inside the blast furnace, so as to form the first target region of the hearth. The first target region is parallel to the plane where the bottom of the hearth is located. The first target region includes a second target region and a third target region. The second target region is the tuyere swirling area in the first target region, and the third target region is the area in the first target region excluding the tuyere swirling area.

[0028] The target difference determination module is used to determine the first target difference based on the proportion of second pig iron mass in the second target area and the proportion of third pig iron mass in the third target area.

[0029] The rating determination module is used to determine the hearth activity level based on the average coke particle size, slag-iron mass ratio, slag mass ratio, and the difference between the first target and the first target value within the first target area.

[0030] Thirdly, this application provides an electronic device, comprising:

[0031] processor;

[0032] Memory used to store processor-executable instructions;

[0033] The processor is configured to execute a furnace hearth activity monitoring method as provided in the first aspect.

[0034] Fourthly, this application provides a non-transitory computer-readable storage medium that, when the instructions in the storage medium are executed by the processor of an electronic device, enables the electronic device to perform a furnace hearth activity monitoring method as provided in the first aspect.

[0035] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages:

[0036] This application determines the first target region within the hearth after a blast furnace shutdown, based on the blast furnace tuyere location parameters, tuyere structural dimensions, and the hearth center location parameters. The hearth activity level is then determined based on the average coke particle size, slag-to-iron mass ratio, slag mass ratio, and the first target difference within this first target region. Since the average coke particle size, slag-to-iron mass ratio, slag mass ratio, and the first target difference are readily available, the hearth activity level can be quickly determined, thus improving the efficiency of hearth activity monitoring.

[0037] After determining the hearth activity level, relevant personnel can further determine whether the hearth activity needs adjustment based on this level. When the hearth activity level is the first target level, the hearth activity is good, and no adjustment is needed. When the hearth activity level is the second target level, the hearth activity is relatively good, and adjustment or no adjustment can be chosen based on the actual situation of the blast furnace. When the hearth activity level is the third target level, the hearth activity is poor, and rapid adjustment is required to increase blast furnace output and reduce blast furnace fuel consumption. Therefore, the hearth activity level provides theoretical support for relevant personnel to adjust the hearth activity. Attached Figure Description

[0038] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0039] Figure 1 A flowchart illustrating a method for monitoring hearth activity provided in this application;

[0040] Figure 2 A schematic diagram of a blast furnace provided in this application;

[0041] Figure 3 for Figure 2 A top-down view of the first target area P in the middle;

[0042] Figure 4 A schematic diagram of the structure of a hearth activity monitoring device provided in this application;

[0043] Figure 5 This is a schematic diagram of the structure of an electronic device provided in this application. Detailed Implementation

[0044] This application provides a method for monitoring hearth activity, which solves the technical problem of low efficiency in monitoring hearth activity in the prior art and achieves the technical effect of improving the efficiency of monitoring hearth activity.

[0045] The technical solution of this application embodiment is to solve the above-mentioned technical problems, and the general idea is as follows:

[0046] A method for monitoring hearth activity includes: after a blast furnace shutdown, determining region size parameters based on tuyere position parameters, tuyere structural size parameters, and the center position parameters of the hearth within the blast furnace to form a first target region of the hearth, the first target region being parallel to the plane where the bottom of the hearth is located; the first target region includes a second target region and a third target region, the second target region being the tuyere swirling area within the first target region, and the third target region being the area within the first target region excluding the tuyere swirling area; determining a first target difference based on the second pig iron mass ratio of the second target region and the third pig iron mass ratio of the third target region; and determining the hearth activity level based on the average coke particle size, slag-iron mass ratio, slag mass ratio, and the first target difference within the first target region.

[0047] This application determines the first target region within the hearth after a blast furnace shutdown, based on the blast furnace tuyere location parameters, tuyere structural dimensions, and the hearth center location parameters. The hearth activity level is then determined based on the average coke particle size, slag-to-iron mass ratio, slag mass ratio, and the first target difference within this first target region. Since the average coke particle size, slag-to-iron mass ratio, slag mass ratio, and the first target difference are readily available, the hearth activity level can be quickly determined, thus improving the efficiency of hearth activity monitoring.

[0048] After determining the hearth activity level, relevant personnel can further determine whether the hearth activity needs adjustment based on this level. When the hearth activity level is the first target level, the hearth activity is good, and no adjustment is needed. When the hearth activity level is the second target level, the hearth activity is relatively good, and adjustment or no adjustment can be chosen based on the actual situation of the blast furnace. When the hearth activity level is the third target level, the hearth activity is poor, and rapid adjustment is required to increase blast furnace output and reduce blast furnace fuel consumption. Therefore, the hearth activity level provides theoretical support for relevant personnel to adjust the hearth activity.

[0049] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0050] First, it should be clarified that the term "and / or" in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0051] This application provides, as follows: Figure 1 The method for monitoring hearth activity shown includes steps S11-S13.

[0052] Step S11: After the blast furnace is shut down, the area size parameters are determined based on the tuyere position parameters, tuyere structural size parameters, and the center position parameters of the hearth inside the blast furnace, so as to form the first target area of ​​the hearth. The first target area is parallel to the plane where the bottom of the hearth is located. The first target area includes a second target area and a third target area. The second target area is the tuyere swirling area in the first target area, and the third target area is the area in the first target area excluding the tuyere swirling area.

[0053] Step S12: Determine the first target difference based on the second pig iron mass ratio of the second target region and the third pig iron mass ratio of the third target region.

[0054] Step S13: Determine the hearth activity level based on the average coke particle size, slag-iron mass ratio, slag mass ratio, and first target difference within the first target area.

[0055] Regarding step S11, after the blast furnace is shut down, the area size parameters are determined based on the tuyere position parameters, tuyere structural size parameters, and the center position parameters of the hearth inside the blast furnace, so as to form the first target area of ​​the hearth. The first target area is parallel to the plane where the bottom of the hearth is located. The first target area includes a second target area and a third target area. The second target area is the tuyere swirling area in the first target area, and the third target area is the area in the first target area excluding the tuyere swirling area.

[0056] Blast furnace shutdown refers to the temporary cessation of air supply to the blast furnace. Figure 2 This is a schematic diagram of a blast furnace. After the blast furnace is shut down, the air supply to the blast furnace through tuyeres F is stopped. It should be noted that there are multiple tuyeres in the blast furnace. Figure 2 The blast furnace in the image only shows one tuyere F.

[0057] The hearth is a structural area within a blast furnace. Its main functions are to protect the furnace bottom, collect molten iron, and collect slag and other materials (such as coke, slag, and pig iron slag). Figure 2 Region R in the diagram represents the hearth of the blast furnace.

[0058] The tuyere location parameters for a blast furnace include the tuyere's height, specifically the height of its horizontal centerline from the ground (tuyeres are generally circular). The tuyere's structural dimensions can be its diameter or radius. The hearth's center position parameter can be the vertical distance between the hearth's central axis and the inner wall of the hearth. The hearth is typically cylindrical, and the vertical distance between the hearth's central axis and the inner wall of the hearth is equal or approximately equal.

[0059] The area dimension parameters of the first target area of ​​the furnace hearth refer to the length, width and height of the first target area. The height of the first target area can be determined based on the tuyere position parameters, the width of the first target area can be determined based on the tuyere structure dimension parameters, and the length of the first target area can be determined based on the center position parameters of the furnace hearth. The plane in which the first target area is located is parallel to the plane in which the bottom of the furnace hearth is located.

[0060] like Figure 2 In the diagram, if the vertical height of the horizontal centerline of the tuyeres is H, then the height of the first target area P is H; if the diameter of the tuyeres F is D, then the width of the first target area P can be any value greater than 0 and less than or equal to D; the vertical distance between the centerline Z of the furnace hearth and the inner wall B of the furnace hearth is L (not shown in the diagram). Figure 2 As shown in the figure, the length of the first target region P is L, and the plane where the first target region P is located is parallel to the plane where the bottom of the furnace K is located. Figure 3 for Figure 2 A top-down view of the first target area P.

[0061] The second target area is the tuyere swirling zone within the first target area. The tuyere swirling zone refers to the area where coke swirls and burns under the influence of high-speed hot air during blast furnace ironmaking. The tuyere swirling zone is adjacent to the tuyere, and its length is approximately one-third of the vertical distance between the centerline of the hearth and the inner wall of the hearth. The width of the tuyere swirling zone within the first target area is the same as the width of the first target area. The third target area is the area within the first target area excluding the tuyere swirling zone. In other words, the second and third target areas constitute the first target area.

[0062] like Figure 3 In this context, region U is the wind vortex zone (second target region) within the first target region P. The third target region M is the region within the first target region excluding the wind vortex zone. Regions U and M together constitute the first target region P.

[0063] It should be noted that each air vent can correspond to a first target area. Steps S11-S13 can be executed for the first target areas corresponding to multiple air vents respectively. In the following description, only the first target area corresponding to one air vent will be used for explanation.

[0064] Step S12: Determine the first target difference based on the second pig iron mass ratio of the second target region and the third pig iron mass ratio of the third target region.

[0065] Before determining the activity level of the hearth, it is necessary to determine the average coke particle size, the slag-iron mass ratio, the slag mass ratio, and the first target difference within the first target area.

[0066] {Methods for determining the first target difference}

[0067] The proportion of second pig iron in the second target area can be determined based on the material quality and pig iron quality in the second target area; the proportion of third pig iron in the third target area can be determined based on the material quality and pig iron quality in the third target area; and the difference between the proportion of second pig iron and the proportion of third pig iron can be determined based on the difference between the proportion of second pig iron and the proportion of third pig iron.

[0068] The proportion of pig iron in the second target area can be determined based on the proportion of pig iron in the total material in the second target area. For example... Figure 3 The mass of material in the second target area U is 560g, and the mass of pig iron in the second target area U is 476g. Therefore, the mass percentage of pig iron in the second target area U is 476g ÷ 560g = 85%.

[0069] The proportion of pig iron in the third target area can be determined based on the proportion of pig iron in the total material in the third target area. For example... Figure 3 The mass of material in the third target area M is 320g, and the mass of pig iron in the third target area M is 165g. Therefore, the mass percentage of pig iron in the third target area M is approximately 320g ÷ 560g ≈ 51%.

[0070] The first target difference can be determined based on the difference between the second and third pig iron mass ratios. For example... Figure 3 In the second target region U, the proportion of the second pig iron mass is 85%, and in the third target region M, the proportion of the third pig iron mass is 51%. The difference between the first target and the second target is 85% - 51% = 34%.

[0071] {Methods for determining the average particle size of coke}

[0072] Based on the particle size of each coke particle within the first target area and multiple preset particle size ranges, the preset particle size range of each coke particle can be determined. Based on the total mass of all coke within the first target area and the total mass of coke corresponding to each preset particle size range, the mass percentage of coke corresponding to each preset particle size range can be determined. Based on the maximum and minimum values ​​of each preset particle size range, the preset average particle size corresponding to each preset particle size range can be determined. Based on the preset average particle size of each preset particle size range and the mass percentage of coke in each preset particle size range, the average particle size of coke can be determined.

[0073] The first target area contains multiple coke particles, each with a slightly different particle size. The preset particle size range for each coke particle can be determined based on multiple preset particle size ranges. For example, coke G has a particle size of 8mm, and preset particle size ranges are A: 0mm-10mm, C: 10mm-20mm, and E: 20mm-30mm, where 0mm < 8mm < 10mm. Therefore, coke G belongs to preset particle size range A.

[0074] After determining the preset particle size range corresponding to each coke particle, the mass percentage of coke corresponding to each preset particle size range is determined based on the total mass of coke in the first target region and the sum of the masses of each coke particle included in each preset particle size range. For example, if preset particle size range A includes 100 coke particles, the sum of the masses of the 100 coke particles is 3.5g, and the total mass of coke in the first target region is 10g, then the mass percentage of coke corresponding to preset particle size range A is 3.5g ÷ 10g = 35%.

[0075] The preset average particle size corresponding to each preset particle size range is determined by the average of the maximum and minimum values ​​of the corresponding preset particle size range. For example, if the preset particle size range A is 0mm-10mm, then the maximum value of preset particle size range A is 10mm, and the minimum value of preset particle size range A is 0mm. Therefore, the preset average particle size of preset particle size range A is (0mm+10mm)÷2=5mm.

[0076] After determining the preset average particle size and the coke mass percentage of each preset particle size range, the arithmetic mean particle size corresponding to each preset particle size range is determined. The average coke particle size in the first target area is determined based on the sum of the arithmetic mean particle sizes corresponding to each preset particle size range.

[0077] For example, if the preset average particle size of preset particle size range A is 5mm, and the coke mass percentage corresponding to preset particle size range A is 35%, then the arithmetic mean particle size of preset particle size range A is 5mm × 35% = 1.75mm. If the arithmetic mean particle size of preset particle size range C is 2.91mm and the arithmetic mean particle size of preset particle size range E is 2.01mm, then the average particle size of coke in the first target area is 1.75mm + 2.91mm + 2.01mm = 6.67mm.

[0078] {Methods for determining the slag-iron mass ratio}

[0079] The slag-iron mass ratio of the first target area can be determined based on the quality of pig iron and slag within the first target area.

[0080] like Figure 3 Given that the iron mass in the second target region U is 476g and the iron mass in the third target region M is 165g, the pig iron mass in the first target region P is 476g + 165g = 641g, and the slag mass in the first target region P is 101g. Therefore, the slag-iron mass ratio in the first target region P is 641g:101g ≈ 6.1:1.

[0081] {Methods for determining the mass percentage of slag}

[0082] The proportion of slag mass in the first target area can be determined based on the material mass and slag mass in the first target area.

[0083] like Figure 3 Given that the material mass in the second target region U is 560g and the material mass in the third target region M is 320g, the material mass in the first target region P is 560g + 320g = 880g, and the slag mass in the first target region P is 101g. Therefore, the slag mass percentage in the first target region is 880g ÷ 101g ≈ 11.4%.

[0084] After determining the average coke particle size, slag-iron mass ratio, slag mass ratio, and first target difference within the first target area, step S13 can be executed to determine the hearth activity level.

[0085] Step S13: Determine the hearth activity level based on the average coke particle size, slag-iron mass ratio, slag mass ratio, and first target difference within the first target area.

[0086] Activity levels can be divided according to actual circumstances. This embodiment only uses the first target level, the second target level, and the third target level as examples for subsequent explanation. Among them, the first target level is the highest activity level (good); the second target level is relatively high activity level (good); and the third target level is low activity level (poor).

[0087] The activity level of the first target area is determined based on the ranges corresponding to the average coke particle size, slag-iron mass ratio, slag mass ratio, and the first target difference within the first target area.

[0088] [Regarding the first target level]

[0089] When the average coke particle size is greater than 12mm and less than 20mm, the slag-to-iron mass ratio is greater than 4:1 and less than 8:1, and the slag mass percentage is greater than 4.5%, the activity level is the first target level. When the hearth activity level is the first target level, the hearth activity is good, the blast furnace output is high, and the blast furnace fuel consumption is low, so there is no need to adjust the hearth activity.

[0090] When the average coke particle size is greater than 12mm and less than 20mm, it can be considered that the average coke particle size is relatively large. Since the coke quality within the hearth is relatively stable and the average coke particle size is large, it indicates that the gaps between each coke particle are also large. This makes it easier for the gas flow to pass through the hearth, which is conducive to the stable conduct of various chemical reactions in the blast furnace (such as the reduction of iron). The stability of various chemical reactions in the blast furnace is one of the manifestations of good hearth activity.

[0091] When the slag-to-iron mass ratio is greater than 4:1 and less than 8:1, the mass ratio of pig iron to slag produced in the blast furnace can be considered relatively reasonable, indicating a high efficiency in reducing iron within the blast furnace, which in turn means a high production efficiency. A high efficiency in reducing iron within the blast furnace is one manifestation of good hearth activity.

[0092] When the slag mass percentage is greater than 4.5%, it can be considered that a large amount of slag is generated. A large amount of slag means that more substances with higher melting points (such as silicon dioxide) in the slag are reduced to substances with lower melting points. This means that the slag has good solubility, can melt at a lower melting point, consumes less heat in the hearth, and has low blast furnace fuel consumption. Low blast furnace fuel consumption is one of the manifestations of good hearth activity.

[0093] Therefore, when the hearth activity level is the first target level, it can be considered that the hearth activity is good, the blast furnace output is high and the blast furnace fuel consumption is low, and there is no need to adjust the hearth activity.

[0094] [Regarding the second target level]

[0095] When the average coke particle size is greater than 6mm and less than 12mm, the slag-iron mass ratio is greater than 4:1 and less than 8:1, the slag mass percentage is greater than 4.5%, and the difference between the first target and the second target is less than 40%, the activity level is the second target level, which is less than the activity level of the first target level.

[0096] When the average particle size of coke is greater than 6 mm and less than 12 mm, it can be considered that the average particle size of coke is small. When the average particle size of coke is small, it means that the gap between each coke particle is also small, making it more difficult for the gas flow to flow in the hearth, which is not conducive to the stable progress of various chemical reactions in the blast furnace.

[0097] However, since the slag-to-iron mass ratio is greater than 4:1 and less than 8:1, it indicates that the mass ratio of pig iron to slag generated in the blast furnace is relatively reasonable, and the efficiency of iron reduction in the blast furnace is relatively high, which means that the blast furnace has a high production efficiency.

[0098] Furthermore, when the slag mass ratio is greater than 4.5%, a larger amount of slag is generated in the blast furnace, the slag has better melting properties, consumes less heat from the hearth, and the blast furnace fuel consumption is low.

[0099] When the difference of the first target is less than 40%, it indicates that the permeability of the hearth is good (permeability refers to the ability of porous media to allow liquid to pass through), and the hearth is not prone to molten iron circulation. The permeability of the hearth is one of the manifestations of good hearth activity.

[0100] Therefore, although the flow of gas in the hearth is difficult, the high efficiency of iron reduction in the blast furnace, the good solubility and permeability of the slag indicate that the current hearth condition is good. That is, the hearth activity level is the second target level (the activity level of the second target level is less than that of the first target level). When the hearth activity level is the second target level, the hearth activity level does not need to be adjusted, or it can be adjusted according to the actual situation of the blast furnace.

[0101] [Regarding the third target level]

[0102] When the average coke particle size is greater than 6mm and less than 12mm, the slag-to-iron mass ratio is greater than 8:1, the slag mass percentage is less than 4.5%, and the difference between the first target and the second target is greater than 40%, the activity level is the third target level, which is less than the activity level of the second target level.

[0103] When the average particle size of coke is greater than 6 mm and less than 12 mm, the average particle size of coke is relatively small, making it difficult for the gas flow in the hearth, which is not conducive to the stable progress of various chemical reactions in the blast furnace.

[0104] When the slag-to-iron mass ratio is greater than 8:1, it can be considered that the mass ratio of pig iron to slag generated in the blast furnace is unreasonable, the efficiency of reduced iron in the blast furnace is low, which means that the production efficiency of the blast furnace is low.

[0105] When the slag mass percentage is less than 4.5%, it indicates that the amount of slag generated in the blast furnace is relatively small, which means that the slag has poor solubility, consumes more heat from the hearth, and results in low blast furnace fuel consumption.

[0106] When the difference in the first target value is greater than 40%, it indicates that the permeability of the hearth is poor and the probability of molten iron circulation in the hearth is high.

[0107] The high difficulty in the flow of gas in the hearth, the low efficiency of iron reduction in the blast furnace, the poor solubility of the slag, and the poor permeability of the hearth indicate that the current hearth condition is poor, that is, the hearth activity level is the third target level. At this time, the blast furnace output is low and the blast furnace fuel consumption is high. It is necessary to quickly adjust the hearth activity to improve the hearth activity in order to increase the blast furnace output and reduce the blast furnace fuel consumption.

[0108] In summary, this application determines the first target region within the hearth after a blast furnace shutdown, based on the blast furnace tuyere location parameters, tuyere structural dimensions, and the hearth center location parameters. The hearth activity level is then determined based on the average coke particle size, slag-to-iron mass ratio, slag mass ratio, and the first target difference within the first target region. Since the average coke particle size, slag-to-iron mass ratio, slag mass ratio, and the first target difference are readily available, the hearth activity level can be quickly determined, meaning the current hearth activity can be rapidly assessed, thus improving the monitoring efficiency of hearth activity.

[0109] After determining the hearth activity level, relevant personnel can further determine whether the hearth activity needs adjustment based on this level. When the hearth activity level is the first target level, the hearth activity is good, and no adjustment is needed. When the hearth activity level is the second target level, the hearth activity is relatively good, and adjustment or no adjustment can be chosen based on the actual situation of the blast furnace. When the hearth activity level is the third target level, the hearth activity is poor, and rapid adjustment is required to increase blast furnace output and reduce blast furnace fuel consumption. Therefore, the hearth activity level provides theoretical support for relevant personnel to adjust the hearth activity.

[0110] Based on the same inventive concept, this application provides as follows Figure 4 The present invention discloses a hearth activity monitoring device, the device comprising:

[0111] The first region determination module 41 is used to determine the region size parameters after the blast furnace is shut down, based on the tuyere position parameters, tuyere structural size parameters, and the center position parameters of the hearth inside the blast furnace, so as to form a first target region of the hearth. The first target region is parallel to the plane where the bottom of the hearth is located. The first target region includes a second target region and a third target region. The second target region is the tuyere swirling area in the first target region, and the third target region is the area in the first target region other than the tuyere swirling area.

[0112] The target difference determination module 42 is used to determine the first target difference based on the proportion of second pig iron mass in the second target area and the proportion of third pig iron mass in the third target area.

[0113] The grade determination module 43 is used to determine the activity level of the hearth based on the average coke particle size, slag-iron mass ratio, slag mass ratio and the first target difference in the first target area.

[0114] Furthermore, the level determination module 43 is used for:

[0115] The activity level of the hearth is determined based on the average coke particle size, slag-iron mass ratio, slag mass percentage, and the difference between the first target and the average coke particle size in the first target area. Specifically, when the average coke particle size is greater than 12 mm and less than 20 mm, the slag-iron mass ratio is greater than 4:1 and less than 8:1, and the slag mass percentage is greater than 4.5%, the activity level of the hearth is determined to be the first target level, which has the highest activity level.

[0116] Furthermore, the level determination module 43 is used for:

[0117] The activity level of the hearth is determined based on the average coke particle size, slag-iron mass ratio, slag mass percentage, and the difference between the first target and the average coke particle size within the first target area. Specifically, when the average coke particle size is greater than 6 mm and less than 12 mm, the slag-iron mass ratio is greater than 4:1 and less than 8:1, the slag mass percentage is greater than 4.5%, and the difference between the first target and the average coke particle size is less than 40%, the activity level is the second target level. The activity level of the second target level is lower than that of the first target level.

[0118] Furthermore, the level determination module 43 is used for:

[0119] The hearth activity level is determined based on the average coke particle size, slag-to-iron mass ratio, slag mass percentage, and the difference between the first target and the first target within the first target area. The activity level is the third target level when the average coke particle size is greater than 6 mm and less than 12 mm, the slag-to-iron mass ratio is greater than 8:1, the slag mass percentage is less than 4.5%, and the difference between the first target and the first target is greater than 40%. The activity level of the third target level is lower than that of the second target level.

[0120] Furthermore, the level determination module 43 is used for:

[0121] Determining the average coke particle size within the first target area includes: determining the preset particle size range of each coke particle based on the particle size of each coke particle within the first target area and multiple preset particle size ranges.

[0122] Based on the total mass of all coke in the first target area and the mass of coke corresponding to each preset particle size range, determine the mass percentage of coke corresponding to each preset particle size range.

[0123] Based on the maximum and minimum values ​​of each preset granularity range, determine the preset average granularity corresponding to each preset granularity range.

[0124] The average particle size of coke in the first target area is determined based on the preset average particle size of each preset particle size range and the coke mass ratio of each preset particle size range.

[0125] Furthermore, the level determination module 43 is used for:

[0126] The first target difference is determined based on the proportion of second pig iron in the second target area and the proportion of third pig iron in the third target area, including: determining the proportion of second pig iron in the second target area based on the material quality and pig iron quality in the second target area;

[0127] Based on the material quality and pig iron quality in the third target area, determine the proportion of pig iron quality in the third target area.

[0128] The first target difference is determined based on the difference between the second and third pig iron mass ratios.

[0129] Furthermore, the level determination module 43 is used for:

[0130] Determining the slag-iron mass ratio within the first target area includes: determining the slag-iron mass ratio within the first target area based on the pig iron mass and slag mass within the first target area.

[0131] Based on the same inventive concept, this application provides as follows Figure 5 An electronic device is shown, comprising:

[0132] Memory 52 is used to store executable instructions of processor 51;

[0133] The processor 51 is configured to execute a hearth activity monitoring method as described above.

[0134] Based on the same inventive concept, this application also provides a non-transitory computer-readable storage medium, which, when the instructions in the storage medium are executed by the processor 51 of an electronic device, enables the electronic device to perform a furnace hearth activity monitoring method as described above.

[0135] Since the electronic device described in this embodiment is an electronic device used to implement the information processing method in the embodiments of this application, those skilled in the art can understand the specific implementation methods and various variations of the electronic device in this embodiment based on the information processing method described in the embodiments of this application. Therefore, how the electronic device implements the method in the embodiments of this application will not be described in detail here. Any electronic device used by those skilled in the art to implement the information processing method in the embodiments of this application falls within the scope of protection of this application.

[0136] Those skilled in the art will understand that embodiments of the present invention can be provided as methods, systems, or computer program products. Therefore, the present invention can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention can take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0137] This invention is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart illustrations and / or block diagrams. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0138] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0139] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0140] 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.

[0141] 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 method for monitoring hearth activity, characterized in that, The method includes: After the blast furnace is shut down, the area size parameters are determined based on the tuyere position parameters, tuyere structural size parameters, and the center position parameters of the hearth inside the blast furnace, to form a first target area of ​​the hearth. The first target area is parallel to the plane where the bottom of the hearth is located. The first target area includes a second target area and a third target area. The second target area is the tuyere swirl area in the first target area, and the third target area is the area in the first target area excluding the tuyere swirl area. Among them, the tuyere position parameter of the blast furnace is the height of the horizontal centerline of the tuyere from the ground, the tuyere structural dimension parameter is the diameter or radius of the tuyere, the hearth center position parameter is the vertical distance between the central axis of the hearth and the inner wall of the hearth, and the first target area dimension parameter of the hearth is the length, width and height of the first target area. The height of the first target area is determined according to the tuyere position parameter, the width of the first target area is determined according to the tuyere structural dimension parameter, and the length of the first target area is determined according to the hearth center position parameter. The first target difference is determined based on the second pig iron mass ratio of the second target area and the third pig iron mass ratio of the third target area, including: determining the second pig iron mass ratio of the second target area based on the material mass and pig iron mass of the second target area; and determining the third pig iron mass ratio of the third target area based on the material mass and pig iron mass of the third target area. The activity level of the hearth is determined based on the average coke particle size, slag-iron mass ratio, slag mass ratio, and the first target difference within the first target area. Determining the slag-iron mass ratio within the first target area includes: The slag-iron mass ratio in the first target area is determined based on the ratio of the pig iron mass in the first target area to the slag mass in the first target area.

2. The method as described in claim 1, characterized in that, The step of determining the hearth activity level based on the average coke particle size, slag-to-iron mass ratio, slag mass ratio, and the first target difference within the first target area includes: When the average particle size of the coke is greater than 12mm and less than 20mm, the slag-to-iron mass ratio is greater than 4:1 and less than 8:1, and the slag mass percentage is greater than 4.5%, the activity level of the hearth is determined to be the first target level, which has the highest activity.

3. The method as described in claim 2, characterized in that, The step of determining the hearth activity level based on the average coke particle size, slag-to-iron mass ratio, slag mass ratio, and the first target difference within the first target area includes: When the average particle size of the coke is greater than 6 mm and less than 12 mm, the slag-iron mass ratio is greater than 4:1 and less than 8:1, the slag mass percentage is greater than 4.5%, and the first target difference is less than 40%, the activity level is the second target level, and the activity of the second target level is lower than that of the first target level.

4. The method as described in claim 3, characterized in that, The step of determining the hearth activity level based on the average coke particle size, slag-to-iron mass ratio, slag mass ratio, and the first target difference within the first target area includes: When the average particle size of the coke is greater than 6 mm and less than 12 mm, the slag-to-iron mass ratio is greater than 8:1, the slag mass percentage is less than 4.5%, and the first target difference is greater than 40%, the activity level is the third target level, and the activity of the third target level is lower than that of the second target level.

5. The method as described in claim 1, characterized in that, Determining the average coke particle size within the first target area includes: Based on the particle size of each coke in the first target area and multiple preset particle size ranges, determine the preset particle size range in which each coke is located. Based on the total mass of all coke in the first target area and the mass of coke corresponding to each preset particle size range, determine the mass percentage of coke corresponding to each preset particle size range. Based on the maximum and minimum values ​​of each preset granularity range, determine the preset average granularity corresponding to each preset granularity range. The average particle size of coke in the first target area is determined based on the preset average particle size of each preset particle size range and the coke mass ratio of each preset particle size range.

6. A hearth activity monitoring device, characterized in that, The device includes: The first region determination module is used to determine region size parameters after the blast furnace is shut down, based on the tuyere position parameters, tuyere structural size parameters, and the center position parameters of the hearth inside the blast furnace, to form a first target region of the hearth. The first target region is parallel to the plane where the bottom of the hearth is located. The first target region includes a second target region and a third target region. The second target region is the tuyere recirculation area in the first target region, and the third target region is the area in the first target region other than the tuyere recirculation area. Among them, the tuyere position parameter of the blast furnace is the height of the horizontal centerline of the tuyere from the ground, the tuyere structural dimension parameter is the diameter or radius of the tuyere, the hearth center position parameter is the vertical distance between the central axis of the hearth and the inner wall of the hearth, and the first target area dimension parameter of the hearth is the length, width and height of the first target area. The height of the first target area is determined according to the tuyere position parameter, the width of the first target area is determined according to the tuyere structural dimension parameter, and the length of the first target area is determined according to the hearth center position parameter. The target difference determination module is used to determine a first target difference based on the second pig iron mass ratio of the second target area and the third pig iron mass ratio of the third target area; the target difference determination module is specifically used to: determine the second pig iron mass ratio of the second target area based on the material mass and the pig iron mass of the second target area; and determine the third pig iron mass ratio of the third target area based on the material mass and the pig iron mass of the third target area. The grade determination module is used to determine the activity level of the hearth based on the average coke particle size, slag-iron mass ratio, slag mass ratio and the first target difference in the first target area. The slag-iron mass ratio in the first target area is determined based on the ratio of the pig iron mass in the first target area to the slag mass in the first target area.

7. An electronic device, characterized in that, include: processor; Memory used to store the processor's executable instructions; The processor is configured to execute a furnace hearth activity monitoring method as described in any one of claims 1 to 5.

8. A non-transitory computer-readable storage medium, wherein instructions in the storage medium, when executed by a processor of an electronic device, enable the electronic device to perform a furnace hearth activity monitoring method as described in any one of claims 1 to 5.

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