Automatic iron discharging method for blast furnace tundish

Abstract

The application provides a blast furnace swing chute automatic iron discharging method, and belongs to the technical field of blast furnace metallurgy, which comprises the following steps: obtaining real-time liquid level information of molten iron inside a blast furnace and real-time weight information of the blast furnace as a whole; preprocessing the real-time liquid level information and the real-time weight information to obtain preprocessed real-time liquid level information and real-time weight information; calculating a real-time iron discharging amount according to the preprocessed real-time liquid level information and the real-time weight information; and adjusting the opening degree of an iron discharging port of the blast furnace and the included angle between the swing chute and the vertical direction according to the real-time iron discharging amount. The blast furnace swing chute automatic iron discharging method provided by the application can collect relevant data of iron discharging of the blast furnace in two different dimensions by obtaining the real-time liquid level information of the molten iron and the real-time weight information of the blast furnace as a whole, so that the calculation of the iron discharging amount is supported by accurate and comprehensive real-time data, and the accuracy of the judgment of the iron discharging amount is improved.

Description

Technical Field

[0001] This invention belongs to the technical field of blast furnace metallurgy, and more specifically, relates to an automatic iron tapping method for blast furnace troughs. Background Technology

[0002] Blast furnace tapping is a core and critical step in the blast furnace ironmaking process, directly affecting ironmaking efficiency, production safety, and the smooth progress of subsequent processes involving the transfer of molten iron. It is also a crucial transitional step connecting blast furnace smelting with the subsequent steelmaking process. Traditional blast furnace tapping operations heavily rely on the manual experience of on-site operators. Operators primarily estimate the weight of the molten iron by observing the level of molten iron inside the blast furnace, and then manually control the opening size and timing of the tapping spout based on the estimation results. This entire process is a manually-dominated, experience-based operation mode.

[0003] The existing traditional blast furnace tapping method has the following drawbacks: The core problem lies in the significant error in manually judging the weight of the tapped iron. There is a lack of precise quantitative monitoring and calculation methods. Operators rely solely on visual observation of the liquid level and past experience to estimate the weight, without standardized calculation methods or real-time data support. This easily leads to errors in estimating the weight of the molten iron, directly causing frequent overfilling or underfilling of the molten iron ladle. Overfilling can directly cause molten iron spillage accidents, threatening the personal safety of on-site operators, and also resulting in molten iron waste and equipment damage. Underfilling reduces the efficiency of molten iron ladle transfer, increases turnover frequency, lengthens the overall production cycle, and reduces the overall capacity of the ironmaking process. Summary of the Invention

[0004] The purpose of this invention is to provide an automatic iron tapping method for blast furnace troughs, which aims to solve the problem in the prior art that the amount of iron tapped depends on manual experience to judge the amount of iron tapped, resulting in a large error in the judgment of the amount of iron tapped.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is: to provide an automatic iron tapping method for blast furnace troughs, comprising: Obtain real-time information on the molten iron level inside the blast furnace and the overall real-time weight of the blast furnace. The real-time liquid level information and the real-time weight information are preprocessed to obtain preprocessed real-time liquid level information and real-time weight information. The real-time iron discharge amount is calculated based on the pre-processed real-time liquid level information and the real-time weight information. Adjust the opening of the blast furnace tap hole and the angle between the swing chute and the vertical direction according to the real-time tapping volume.

[0006] In one possible implementation, the real-time liquid level information and the real-time weight information are preprocessed to obtain preprocessed real-time liquid level information and real-time weight information, including: By removing outliers from the real-time liquid level information and the real-time weight information, standard real-time liquid level information and standard real-time weight information are obtained. The standard real-time liquid level information and the standard real-time weight information are calibrated to obtain calibrated real-time liquid level information and real-time weight information. The calibrated real-time liquid level and real-time weight information are smoothed using a moving average method.

[0007] In one possible implementation, calculating the real-time iron discharge amount based on the preprocessed real-time liquid level information and the real-time weight information includes: The amount of iron released based on the real-time liquid level information is calculated according to the liquid level dimension. The amount of iron released in the weighing dimension is calculated based on the real-time weight information. The amount of iron released based on the liquid level dimension and the amount of iron released based on the weighing dimension are combined to obtain the real-time amount of iron released.

[0008] In one possible implementation, the iron release amount based on the liquid level dimension and the iron release amount based on the weighing dimension are fused to obtain the real-time iron release amount, including: Determine whether there are any anomalies in the iron release data at the liquid level dimension, and obtain the determination result; Based on the judgment result, the real-time iron release amount is obtained by using the iron release amount in the weighing dimension as a basis or by fusing the iron release amount in the liquid level dimension with the iron release amount in the weighing dimension.

[0009] In one possible implementation, determining whether there are any anomalies in the iron release data at the liquid level dimension and obtaining the determination result includes: Calculate the deviation between the amount of iron released based on the liquid level dimension and the amount of iron released based on the weighing dimension; The deviation is compared with a deviation threshold. If the deviation is lower than the deviation threshold, it is determined that the amount of iron released in the liquid level dimension is not abnormal; otherwise, it is determined that the amount of iron released in the liquid level dimension is abnormal.

[0010] In one possible implementation, based on the judgment result, the real-time iron release amount is obtained by using the iron release amount in the weighing dimension or by fusing the iron release amount in the liquid level dimension with the iron release amount in the weighing dimension, including: When there is an abnormality in the amount of iron released in the liquid level dimension, the amount of iron released in the weighing dimension is taken as the real-time amount of iron released; when there is no abnormality in the amount of iron released in the liquid level dimension, the amount of iron released in the liquid level dimension and the amount of iron released in the weighing dimension are merged to obtain the real-time amount of iron released.

[0011] In one possible implementation, adjusting the blast furnace tapping spout opening and the angle between the chute and the vertical direction based on the real-time tapping volume includes: The iron discharge stage is determined based on the real-time iron discharge volume. Adjust the opening of the blast furnace tapping spout and the angle between the swivel and the vertical direction according to the tapping stage.

[0012] In one possible implementation, determining the iron-releasing stage based on the real-time iron-releasing volume includes: Determine the warning weight threshold based on the target load weight; The iron release stage is determined based on the real-time iron release volume, the warning weight threshold, and the target iron loading weight.

[0013] In one possible implementation, determining the iron release stage based on the real-time iron release amount, the warning weight threshold, and the target iron loading weight includes: When the real-time iron discharge amount is lower than the warning weight threshold, it is the normal iron discharge stage; When the real-time iron release amount is higher than the warning weight threshold but lower than the target iron loading weight, it is the deceleration iron release stage; When the real-time iron discharge amount is not less than the target iron loading weight, it is the tank changing stage.

[0014] In one possible implementation, adjusting the blast furnace tapping spout opening and the angle between the chute and the vertical direction according to the tapping stage includes: During the normal iron tapping stage, the opening of the blast furnace tapping spout is controlled to the maximum opening, and the angle between the swing chute and the vertical direction is controlled to the initial angle. During the deceleration and tapping phase, the opening of the blast furnace tapping spout is reduced, and the angle between the swing chute and the vertical direction is adjusted. During the blast furnace tapping stage, the tapping spout of the blast furnace is closed, and the angle between the swing trough and the vertical direction is controlled to the initial angle.

[0015] The beneficial effects of the automatic blast furnace tapping method provided by this invention are as follows: Compared with the prior art, this invention's automatic blast furnace tapping method acquires real-time molten iron level information and real-time overall blast furnace weight information, enabling real-time collection of relevant data on blast furnace tapping from two different dimensions. This provides accurate and comprehensive real-time data support for calculating the tapping volume, improving the accuracy of tapping volume judgment. Preprocessing the collected real-time data effectively eliminates interference factors, making the data more closely reflect the actual operating conditions of blast furnace tapping, laying a solid foundation for accurate subsequent calculation of the tapping volume, and avoiding the impact of errors in the original data on the reliability of the calculated tapping volume.

[0016] Based on the pre-treated liquid level and weight information, the real-time iron discharge volume is calculated, achieving quantitative accounting and accurate calculation of the iron discharge volume. This provides a standardized calculation basis for judging the iron discharge volume, significantly reducing the judgment error and fundamentally solving the problem of excessive deviation in molten iron weight estimation. Dynamically adjusting the opening of the iron discharge port and the angle between the swivel chute and the vertical direction according to the real-time iron discharge volume allows the blast furnace iron discharge operation to match the actual iron discharge requirements, achieving intelligent and automated control of the iron discharge operation. This ensures that every step of the iron discharge process can respond accurately to the actual iron discharge volume.

[0017] Reducing the opening of the molten iron tapping spout based on real-time changes in the amount of molten iron discharged will directly decrease the flow rate and velocity of the molten iron in the trough. This alters the flow pattern of the molten iron within the trough, causing a deviation in the landing point of the molten iron after it flows out. Simultaneously adjusting the angle between the trough and the vertical direction can change the outflow direction and trajectory of the molten iron, specifically correcting its landing point. This ensures the molten iron falls precisely into the ladle, effectively preventing it from landing outside the ladle due to a deviated landing point.

[0018] Precise control of the molten iron's landing point can effectively prevent material waste caused by spillage, while also preventing spilled molten iron from burning surrounding production equipment, reducing equipment maintenance costs and material losses. Accurate molten iron placement into the ladle can also avoid on-site safety accidents caused by splashing, eliminate safety hazards in the production process, and effectively protect the personal safety of operators at the blast furnace tapping site, making tapping operations safer.

[0019] By dividing the blast furnace blasting process into different stages based on real-time iron discharge volume and adjusting the opening of the taphole and the angle of the swing trough accordingly, the entire process becomes more standardized and rational. During the normal blasting stage, a high-efficiency blasting rhythm is maintained to improve overall blasting efficiency. During the deceleration blasting stage, precise volume control is implemented. During the ladle changing stage, the taphole is promptly closed and the swing trough is reset to ensure smooth ladle changing operations. The orderly connection between each blasting stage effectively reduces the occurrence of overloading and underloading of the molten iron ladle. Reducing overloading further mitigates safety risks, while improving underloading increases the ladle transfer efficiency, reduces turnover frequency, and shortens the overall ironmaking production cycle.

[0020] Automated molten iron discharge operations effectively avoid subjective errors caused by manual operation, precisely controlling the amount of molten iron discharged and fundamentally reducing the occurrence of overfilling and underfilling of molten iron ladles. Reducing overfilling effectively avoids safety accidents caused by molten iron spills, ensuring the personal safety of on-site operators, while also preventing molten iron waste and equipment damage, thus lowering safety risks and material losses during production. Improving underfilling of molten iron ladles increases ladle transfer efficiency, reduces ladle turnover frequency, shortens the overall ironmaking production cycle, and ultimately increases the comprehensive capacity of the ironmaking process, making the blast furnace ironmaking process smoother. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the main steps of the automatic iron tapping method for blast furnace troughs provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of the main steps in step S200; Figure 3 This is a schematic diagram of the main steps in step S300; Figure 4 This is a schematic flowchart of the automatic iron tapping method for blast furnace swing troughs provided in an embodiment of the present invention. Detailed Implementation

[0023] To make the technical problems to be solved, the technical solutions, and the beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0024] Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this application.

[0025] It should be further noted that the accompanying drawings and embodiments of the present invention mainly describe the concept of the present invention. Based on this concept, some specific forms and arrangements of connection relationships, positional relationships, power mechanisms, power supply systems, hydraulic systems and control systems may not be fully described. However, under the premise that those skilled in the art understand the concept of the present invention, they can implement the above-mentioned specific forms and arrangements in a well-known manner.

[0026] When a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0027] In the description of this invention, "a plurality of" means two or more, and "several" means one or more, unless otherwise explicitly specified.

[0028] The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself. The terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0029] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," and "above" are used here to describe the spatial positional relationship between a device or feature and other devices or features, as shown in the figure. It should be understood that spatial relative terms are intended to... The invention includes different orientations of the device in use or operation, in addition to those described in the figures. For example, if a device in the figures is inverted, a device described as "above" or "on top of" other devices or structures will be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below". The device may also be positioned in other different ways, and the spatial relative descriptions used herein are interpreted accordingly. The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the invention, "a plurality of" means two or more, and "a number" means one or more, unless otherwise explicitly specified.

[0030] Reference Figures 1 to 4 The automatic blast furnace tapping method provided by the present invention will now be described. The automatic blast furnace tapping method includes: S100. Obtain real-time liquid level information of molten iron inside the blast furnace and real-time weight information of the entire blast furnace.

[0031] The real-time liquid level information of molten iron inside the blast furnace is collected by a radar level gauge installed inside the blast furnace, and the real-time weight information of the entire blast furnace is detected by a high-precision weighing sensor for the blast furnace installed at the bottom of the blast furnace.

[0032] S200. Preprocess the real-time liquid level information and real-time weight information to obtain preprocessed real-time liquid level information and real-time weight information.

[0033] In one possible implementation, step S200 involves preprocessing the real-time liquid level information and real-time weight information to obtain preprocessed real-time liquid level information and real-time weight information, including: S210. Remove outliers from the real-time liquid level and real-time weight information to obtain standard real-time liquid level and standard real-time weight information.

[0034] use The criteria identify and raise outliers in real-time liquid level and real-time weight information.

[0035] S220. The standard real-time liquid level information and standard real-time weight information are calibrated to obtain calibrated real-time liquid level information and real-time weight information.

[0036] The standard real-time liquid level information is calibrated using the following formula:

[0037] in, This provides the calibrated real-time liquid level information. For standard real-time liquid level information; This is a temperature correction factor; Ambient temperature; For calibration temperature; This is the vibration correction factor; This refers to the vibration amplitude of the equipment.

[0038] The standard real-time weight information is calibrated using the following formula:

[0039] in, This provides the calibrated real-time weight information. Provides standard real-time weight information; This is the correction factor for the blast furnace weighing temperature. Ambient temperature; For calibration temperature; This is the vibration correction factor; This refers to the vibration amplitude of the equipment.

[0040] S230. The real-time liquid level and real-time weight information after calibration are smoothed using the moving average method.

[0041] S300. Calculate the real-time iron discharge amount based on the pre-processed real-time liquid level information and real-time weight information.

[0042] In one possible implementation, step S300, calculating the real-time iron discharge amount based on the preprocessed real-time liquid level information and real-time weight information, includes: S310. Calculate the amount of iron to be released based on the real-time liquid level information.

[0043] The furnace radius corresponding to the liquid level is calculated using the following formula:

[0044] in, The furnace radius corresponding to the liquid level; The radius of the bottom of the blast furnace; The taper coefficient of the blast furnace lining; This is the preprocessed real-time liquid level information.

[0045] The volume of molten iron is calculated using the following formula:

[0046] in, The volume of molten iron; This refers to the preprocessed real-time liquid level information; The radius of the bottom of the blast furnace; This represents the furnace radius corresponding to the liquid level.

[0047] The density of the corrected molten iron is calculated using the following formula:

[0048] in, This refers to the density of molten iron after real-time temperature correction. This refers to the density of molten iron at standard conditions of 25℃. This is the temperature correction factor for molten iron density; Ambient temperature; For calibration temperature.

[0049] The weight of remaining molten iron at the liquid level is calculated using the following formula:

[0050] in, The remaining weight of molten iron is measured at the liquid level. The volume of molten iron; This is the density of molten iron after real-time temperature correction.

[0051] The amount of iron released based on the liquid level is calculated using the following formula:

[0052] in, The amount of iron released is based on the liquid level. This represents the initial weight of molten iron in the blast furnace before tapping. This represents the remaining weight of molten iron at the liquid level.

[0053] S320. Calculate the amount of iron to be released at the weighing dimension based on real-time weight information.

[0054] The amount of iron removed at the weighing dimension is calculated using the following formula:

[0055] in, The amount of iron released is for the weighing dimension; The initial weight calibration value of the blast furnace at the moment of iron tapping;

[0056] This provides real-time weight information.

[0057] S330. The amount of iron discharged from the liquid level dimension and the amount of iron discharged from the weighing dimension are combined to obtain the real-time amount of iron discharged.

[0058] In one possible implementation, step S330, fusing the iron release amount from the liquid level dimension and the iron release amount from the weighing dimension to obtain the real-time iron release amount, includes: S331. Determine if there are any anomalies in the iron release data at the liquid level dimension, and obtain the judgment result.

[0059] In one possible implementation, step S331. Determine whether there are any anomalies in the iron release data at the liquid level dimension, and obtain the determination result, including: S331a. Calculate the deviation between the amount of iron released in the liquid level dimension and the amount of iron released in the weighing dimension.

[0060] The deviation between the amount of iron released based on the liquid level dimension and the amount of iron released based on the weighing dimension is calculated using the following formula:

[0061] in, This refers to the deviation between the amount of iron released in the liquid level dimension and the amount of iron released in the weighing dimension. The amount of iron released is for the weighing dimension; The amount of iron released is based on the liquid level.

[0062] S331b. Compare the deviation with the deviation threshold. If the deviation is lower than the deviation threshold, it is determined that there is no abnormality in the amount of iron released in the liquid level dimension; otherwise, it is determined that there is an abnormality in the amount of iron released in the liquid level dimension.

[0063] S332. Based on the judgment result, the real-time iron release amount is obtained by using the iron release amount in the weighing dimension as the basis or by combining the iron release amount in the liquid level dimension with the iron release amount in the weighing dimension.

[0064] In one possible implementation, S332. Based on the judgment result, the real-time iron release amount is obtained by using the iron release amount from the weighing dimension or by fusing the iron release amount from the liquid level dimension and the iron release amount from the weighing dimension, including: S332a. When there is an abnormality in the amount of iron released in the liquid level dimension, the amount of iron released in the weighing dimension shall be taken as the real-time amount of iron released.

[0065] S332b. When there is no abnormality in the amount of iron released in the liquid level dimension, the amount of iron released in the liquid level dimension and the amount of iron released in the weighing dimension are merged to obtain the real-time amount of iron released.

[0066] The real-time iron release amount is obtained by fusing the iron release amount from the liquid level dimension and the iron release amount from the weighing dimension using the following calculation formula:

[0067] in, For real-time iron discharge, The weighting coefficients for the blast furnace weighing dimension; The amount of iron released is for the weighing dimension; The weighting coefficient for the molten iron level dimension; The amount of iron released is based on the liquid level.

[0068] S400. Adjust the opening of the blast furnace tap hole and the angle between the swing chute and the vertical direction according to the real-time tapping volume.

[0069] In one possible implementation, step S400, adjusting the blast furnace tapping spout opening and the angle between the chute and the vertical direction based on the real-time tapping rate, includes: S410. Determine the iron discharge stage based on the real-time iron discharge volume.

[0070] In one possible implementation, step S410, determining the iron-releasing stage based on the real-time iron-releasing volume, includes: S411. Determine the warning weight threshold based on the target load weight.

[0071] S412. Determine the iron release stage based on the real-time iron release volume, the warning weight threshold, and the target iron loading weight.

[0072] In one possible implementation, step S412, determining the iron-releasing stage based on the real-time iron-releasing amount, the warning weight threshold, and the target iron-loading weight, includes: When the real-time iron discharge amount is lower than the warning weight threshold, it is the normal iron discharge stage.

[0073] When the real-time iron discharge amount is higher than the warning weight threshold but lower than the target iron loading weight, it is the deceleration iron discharge stage.

[0074] When the real-time iron discharge is not less than the target iron loading weight, it is the tank changing stage.

[0075] S420. Adjust the opening of the blast furnace tapping spout and the angle between the swivel and the vertical direction according to the tapping stage.

[0076] In one possible implementation, step S420, adjusting the blast furnace tapping spout opening and the angle between the chute and the vertical direction according to the tapping stage, includes: During the normal iron tapping stage, the opening of the blast furnace tapping spout is controlled at its maximum, and the angle between the swing chute and the vertical direction is controlled at its initial angle.

[0077] During the deceleration and tapping phase, reduce the opening of the blast furnace tapping spout and adjust the angle between the chute and the vertical direction.

[0078] During the blast furnace tapping stage, the tapping spout is closed, and the angle between the swing trough and the vertical direction is controlled to the initial angle.

[0079] The beneficial effects of the automatic blast furnace tapping method provided by this invention are as follows: Compared with the prior art, this invention achieves multi-dimensional and accurate collection of data related to the amount of molten iron tapped by simultaneously acquiring real-time molten iron level and the overall real-time weight information of the blast furnace. This breaks away from the traditional single data acquisition mode of manual observation, providing real and comprehensive real-time data support for the calculation of the amount of molten iron tapped. Subsequent processing and calculation based on multi-dimensional real-time data can improve the accuracy of molten iron tapping calculation from the source, effectively avoiding various errors caused by subjective human judgment, and making the quantitative monitoring of molten iron tapping operations more scientific.

[0080] Outlier removal, calibration, and smoothing of the collected real-time data can filter out invalid interference information that occurs during the data acquisition process, correct the deviations in the data itself, and make the processed liquid level and weight information more consistent with the actual production situation, thus laying a solid data foundation for the accurate calculation of subsequent real-time iron discharge. High-quality pre-processed data makes the subsequent calculation results of iron discharge more reliable, avoiding calculation deviations caused by problems with the original data, and ensuring the data accuracy of the entire iron discharge control process.

[0081] By calculating the amount of iron released separately from both liquid level and weighing dimensions and then fusing them, a dual verification and cross-validation of the iron release amount is achieved, making the calculation results more reliable. Anomaly detection in the liquid level dimension of the iron release amount can promptly identify abnormalities in single-dimensional data. When liquid level data is abnormal, the weighing dimension data is used as the basis; when the data is normal, the two dimensions are fused. This ensures the fault tolerance of the iron release amount calculation while leveraging the advantages of both dimensions to improve calculation accuracy when the data is normal, ensuring that the real-time iron release amount results remain accurate and effective.

[0082] Dividing the molten iron discharge into stages based on precise real-time discharge volume allows for more targeted control of the discharge operation's rhythm. Setting warning thresholds based on the target molten iron weight provides clear and quantifiable standards for stage transitions, avoiding the arbitrariness of stage judgments in manual operation. Adjusting the discharge port opening and chute angle for different discharge stages ensures that the control actions of the discharge operation match the discharge progress, achieving dynamic and precise control of the discharge process and allowing for accurate control of the molten iron discharge speed and direction.

[0083] During the normal tapping phase, using the maximum tapping opening and initial chute angle ensures efficient tapping, allowing molten iron to be discharged quickly and stably, thus improving the overall operational efficiency of ironmaking production. During the deceleration tapping phase, reducing the tapping opening and adjusting the chute angle smoothly reduces the molten iron discharge rate, preventing overloading due to excessive flow velocity when approaching the target charge volume, thus ensuring precise control of the charge volume. During the ladle-changing phase, promptly closing the tapping opening and resetting the chute angle quickly cuts off molten iron discharge, preventing overflow, and simultaneously restoring the chute to its initial state, preparing for the next tapping operation and ensuring the safety and smooth transition of operations during the ladle-changing process.

[0084] This entire method achieves fully automated control of the blast furnace trough tapping operation, replacing traditional manual experience-based operations. This significantly reduces the labor intensity of manual operations and minimizes the impact of human factors on the tapping process. Precise automated control effectively avoids overloading and underloading of the molten iron ladle, preventing overflows, equipment damage, and safety accidents caused by overloading. It also solves problems such as low transfer efficiency and long production cycles caused by underloading. This ensures operational safety on the production site while improving molten iron transfer efficiency and overall ironmaking capacity. Simultaneously, the standardized automated operation process makes blast furnace tapping operations more standardized, facilitating production process management and optimization. This provides technical support for the intelligent and standardized development of blast furnace ironmaking production, promoting the efficient, safe, and stable operation of the entire ironmaking process.

[0085] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

[0086] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0087] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

Claims

1. An automatic iron tapping method for blast furnace troughs, characterized in that, include: Obtain real-time information on the molten iron level inside the blast furnace and the overall real-time weight of the blast furnace. The real-time liquid level information and the real-time weight information are preprocessed to obtain preprocessed real-time liquid level information and real-time weight information. The real-time iron discharge amount is calculated based on the pre-processed real-time liquid level information and the real-time weight information. Adjust the opening of the blast furnace tap hole and the angle between the swing chute and the vertical direction according to the real-time tapping volume.

2. The automatic iron tapping method for blast furnace troughs as described in claim 1, characterized in that, The real-time liquid level information and the real-time weight information are preprocessed to obtain preprocessed real-time liquid level information and real-time weight information, including: By removing outliers from the real-time liquid level information and the real-time weight information, standard real-time liquid level information and standard real-time weight information are obtained. The standard real-time liquid level information and the standard real-time weight information are calibrated to obtain calibrated real-time liquid level information and real-time weight information. The calibrated real-time liquid level and real-time weight information are smoothed using a moving average method.

3. The automatic iron tapping method for blast furnace troughs as described in claim 1, characterized in that, The real-time iron discharge amount is calculated based on the pre-processed real-time liquid level information and the real-time weight information, including: The amount of iron released based on the real-time liquid level information is calculated according to the liquid level dimension. The amount of iron released in the weighing dimension is calculated based on the real-time weight information. The amount of iron released based on the liquid level dimension and the amount of iron released based on the weighing dimension are combined to obtain the real-time amount of iron released.

4. The automatic iron tapping method for blast furnace troughs as described in claim 3, characterized in that, The iron release amount based on the liquid level dimension and the iron release amount based on the weighing dimension are combined to obtain the real-time iron release amount, including: Determine whether there are any anomalies in the iron release data at the liquid level dimension, and obtain the determination result; Based on the judgment result, the real-time iron release amount is obtained by using the iron release amount in the weighing dimension as a basis or by fusing the iron release amount in the liquid level dimension with the iron release amount in the weighing dimension.

5. The automatic iron tapping method for blast furnace troughs as described in claim 4, characterized in that, Determine whether there are any anomalies in the iron release data at the liquid level dimension, and obtain the determination result, including: Calculate the deviation between the amount of iron released based on the liquid level dimension and the amount of iron released based on the weighing dimension; The deviation is compared with a deviation threshold. If the deviation is lower than the deviation threshold, it is determined that the amount of iron released in the liquid level dimension is not abnormal; otherwise, it is determined that the amount of iron released in the liquid level dimension is abnormal.

6. The automatic iron tapping method for blast furnace troughs as described in claim 4, characterized in that, Based on the judgment result, the real-time iron release amount is obtained by using the iron release amount in the weighing dimension or by fusing the iron release amount in the liquid level dimension with the iron release amount in the weighing dimension, including: When there is an abnormality in the amount of iron released in the liquid level dimension, the amount of iron released in the weighing dimension is taken as the real-time amount of iron released; when there is no abnormality in the amount of iron released in the liquid level dimension, the amount of iron released in the liquid level dimension and the amount of iron released in the weighing dimension are merged to obtain the real-time amount of iron released.

7. The automatic iron tapping method for blast furnace troughs as described in claim 1, characterized in that, Adjusting the blast furnace tapping spout opening and the angle between the chute and the vertical direction based on the real-time tapping volume includes: The iron discharge stage is determined based on the real-time iron discharge volume. Adjust the opening of the blast furnace tapping spout and the angle between the swivel and the vertical direction according to the tapping stage.

8. The automatic iron tapping method for blast furnace troughs as described in claim 7, characterized in that, Determining the iron discharge stage based on the real-time iron discharge volume includes: Determine the warning weight threshold based on the target load weight; The iron release stage is determined based on the real-time iron release volume, the warning weight threshold, and the target iron loading weight.

9. The automatic iron tapping method for blast furnace troughs as described in claim 8, characterized in that, The iron release stage is determined based on the real-time iron release volume, the warning weight threshold, and the target iron loading weight, including: When the real-time iron discharge amount is lower than the warning weight threshold, it is the normal iron discharge stage; When the real-time iron release amount is higher than the warning weight threshold but lower than the target iron loading weight, it is the deceleration iron release stage; When the real-time iron discharge amount is not less than the target iron loading weight, it is the tank changing stage.

10. The automatic iron tapping method for blast furnace troughs as described in claim 9, characterized in that, Adjusting the blast furnace tapping spout opening and the angle between the swivel and the vertical direction according to the aforementioned tapping stage includes: During the normal iron tapping stage, the opening of the blast furnace tapping spout is controlled to the maximum opening, and the angle between the swing chute and the vertical direction is controlled to the initial angle. During the deceleration and tapping phase, the opening of the blast furnace tapping spout is reduced, and the angle between the swing chute and the vertical direction is adjusted. During the blast furnace tapping stage, the tapping spout of the blast furnace is closed, and the angle between the swing trough and the vertical direction is controlled to the initial angle.

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