Converter automatic slag splashing gun position control method and device, electronic equipment and storage medium

Abstract

The application discloses a converter automatic slag splashing gun position control method and device, electronic equipment and a storage medium, and belongs to the technical field of converter steelmaking. The method comprises the following steps: collecting relevant information of the current furnace and historical furnaces, and establishing a historical furnace database; performing combing analysis and segmented interval processing to form a secondary database; simulating a slag splashing and converter protection process, and establishing a tertiary database; corresponding to the optimal simulation curve of the tertiary database, performing curve fitting on the secondary database, obtaining a slag splashing and converter protection gun position control height fitting curve library, and then finding the optimal fitting curve; comparing and correcting the fitting curve and the simulation curve to obtain a corrected slag splashing and converter protection gun position height control curve; adjusting the corrected slag splashing and converter protection gun position height control curve in real time according to an audio signal of an audio slag system; and feeding back the adjusted relevant information to the fitting curve library for self-learning. The application realizes scientific and accurate control of the slag splashing and converter protection gun position, and improves the slag splashing and converter protection effect.

Description

TECHNICAL FIELD

[0001] The present application relates to a converter automatic splashing gun position control method and device, electronic equipment and storage medium, belonging to the technical field of converter steelmaking. BACKGROUND

[0002] The splashing slag protection technology is to use the end-point slag with saturated or supersaturated MgO content after the converter tapping is finished, to form a high-melting-point slag layer on the surface of the lining by the splashing of high-pressure nitrogen gas in the oxygen lance, and the slag layer is well bonded to the lining. The splashing slag layer has good corrosion resistance, can inhibit the oxidation and decarburization of the lining brick surface, and can reduce the erosion and scouring of high-temperature slag on the lining brick, thereby protecting the lining brick, reducing the loss rate of refractory materials, reducing the consumption of gunning materials, reducing the labor intensity of workers, prolonging the service life of the lining, improving the converter operation rate, and reducing the production cost. The splashing slag protection is a major progress in the converter lining protection technology, and this technology can greatly improve the converter campaign life and reduce the consumption of refractory materials, and has a broad application prospect.

[0003] The converter lining refractory brick is mainly magnesia-carbon brick, and the carbon content is generally 14-18%. The magnesia-carbon brick has the following advantages: internal carbon content, non-wetting to slag, can resist slag erosion, and the binder solidifies to form a carbon network to play a skeleton role; and the carbon has good heat conduction performance, can uniformly conduct heat, and avoid cracks in the magnesia-carbon brick due to uneven heating. The formation of the converter splashing slag layer can be roughly divided into three steps: (1) the part of the slag with good fluidity is first combined with the lining brick, and penetrates, sinters and adheres along the small cracks and pores on the surface of the lining brick; (2) after the formation of the combined surface, the high-melting-point minerals (dicalcium silicate, tricalcium silicate, etc.) in the slag are splashed by high-pressure nitrogen gas and inlaid on the sintered layer formed above; (3) in the process of continuous nitrogen gas blowing, the slag layer formed above is continuously cooled and solidified to form a splashing slag layer on the lining.

[0004] The dissolving temperature of the converter slag is only about 1450°C, and the melting starts early at about 1300°C. However, due to the existence of high-melting-point phases (the melting point of tricalcium silicate can be as high as more than 2000°C) in the slag, in the blowing process, the low-melting-point phases (iron oxide, calcium silicate, etc.) in the splashing slag layer are dissolved, and the high-melting-point phases are left behind. Through repeated blowing and splashing, the high-melting-point substances in the splashing slag layer become more and more, and the low-melting-point substances become less and less, thereby forming a stable splashing slag layer.

[0005] Of course, the final slag composition such as basicity, MgO content, FeO content, and suitable slag amount, final slag temperature, nitrogen pressure and flow, oxygen lance process parameters and oxygen lance position control, combined blowing converter bottom blowing, splashing time, steel grade end point control target requirements, and each plant process equipment, furnace charge results, technical operation level, management requirements, etc. also affect the effect of splashing slag protection, which needs to be highly valued and considered as a whole.

[0006] The control of the splashing slag protection lance position is relatively critical, and it is generally believed that a low lance position splashes the furnace body, and a high lance position splashes the molten pool. This is because when the lance position is high, the nitrogen gas cannot form enough impact force on the slag, causing the slag to form "surge" in the molten pool and continuously surge and adhere to the molten pool. When the lance position is low, the high-pressure nitrogen gas impacts the slag, causing the slag to form slag particles and be splashed and adhered to the furnace body. However, attention should be paid to the fact that the lance position should not be too deep to prevent the slag from splashing to the furnace mouth part and failing to protect the furnace. Normally, the slag should be cooled first, and then the lance position should be raised. During the splashing process, the lance should be slowly lowered according to the slag particle situation at the furnace mouth to achieve uniform coverage of the slag layer from the molten pool to the furnace body. Due to the changes and differences in the raw material entering the furnace, the hot metal and scrap steel conditions, the charging conditions, the steel smelting requirements, the process equipment and parameters, the operation technical level, and the furnace life, the splashing slag protection requirements of different periods and different heats are also different, and the erosion degree of the furnace lining refractory bricks in each part is also inconsistent. Therefore, the focus of splashing slag protection at each furnace age period or each heat also changes, which requires that the lance position of the splashing slag protection be adjusted in time and correspondingly to ensure the splashing slag protection effect of each heat. SUMMARY

[0007] To solve the above problems, the present application provides a converter automatic splashing slag lance position control method, device, electronic equipment and storage medium, which can realize scientific and accurate control of the splashing slag protection lance position and improve the splashing slag protection effect.

[0008] The technical scheme adopted by the present application to solve the technical problems is:

[0009] In a first aspect, the present application provides a converter automatic splashing slag lance position control method, which comprises the following steps:

[0010] Collect relevant information of the current heat and historical heats, and establish a historical heat database, wherein the relevant information at least includes hot metal conditions entering the furnace, scrap steel conditions, slag-making auxiliary materials, blowing end point process target requirements, splashing slag protection oxygen lance control curve, and converter bottom blowing flow. The hot metal conditions entering the furnace include hot metal composition, temperature, weight and slag amount. The scrap steel conditions include scrap steel structure type, weight and scrap steel addition ratio. The slag-making auxiliary materials include types, compositions and addition amounts of coolants and slag-forming agents. The blowing end point process target requirements include end point oxygen content, end point temperature, final slag basicity and composition.

[0011] Data information and conditions of the historical heat database are analyzed and processed in segments, and the processed data form a secondary database;

[0012] A converter model in the process of slag splashing is established, and the process of slag splashing is simulated by using Fluent finite element simulation analysis software, and a simulation curve library of the optimal slag splashing gun position control height on the time axis under various combinations is established, i.e., a tertiary database;

[0013] The optimal slag splashing gun position control height simulation curve under the same or similar conditions as the data information of the current heat is found in the tertiary database in combination with the specific data information of the current heat;

[0014] Meanwhile, the slag splashing gun position control height curves under various combinations are curve-fitted in the secondary database, and a fitting curve library of the slag splashing gun position control height under various combinations is obtained;

[0015] The optimal slag splashing gun position control height fitting curve under the same or similar conditions as the data information of the current heat is found in the fitting curve library of the slag splashing gun position control height under various combinations in combination with the specific data information of the current heat;

[0016] Under the condition of the data information of the current heat, the slag splashing gun position control height is compared and corrected on the time axis by using the optimal slag splashing gun position control height fitting curve and the optimal slag splashing gun position control height simulation curve, and a corrected slag splashing gun position height control curve on the time axis under the condition of the current heat is obtained;

[0017] After the slag splashing starts, the corrected slag splashing gun position height control curve on the time axis under the condition of the current heat is further adjusted in real time according to the audio signal of the audio slag system;

[0018] The adjusted corrected slag splashing gun position height control curve on the time axis under the condition of the current heat is fed back to the fitting curve library of the slag splashing gun position control height for self-learning.

[0019] As a possible implementation manner of the embodiment, the data information and conditions of the historical heat database are analyzed and processed in segments, including:

[0020] The Si and Mn contents of the molten iron are segmented every 0.1%;

[0021] The P content of the molten iron is segmented every 0.01%;

[0022] The slag quantity of the molten iron is segmented every 500 kg;

[0023] Various scrap steels are segmented every 5000 kg;

[0024] The slag auxiliary material addition amount is taken as a segmented interval per 500 kg;

[0025] The blowing endpoint temperature is taken as a segmented interval per 5 DEG C;

[0026] The blowing endpoint [O] content is taken as a classification interval per 50 ppm;

[0027] The oxygen lance control lance height is taken as a segmented interval per 50 mm;

[0028] The converter bottom blowing flow is taken as a segmented interval per 50 m 3 / h;

[0029] After the segmented intervals of various types of information, the secondary database under various combinations is obtained by combining the segmented intervals of various types of information.

[0030] As a possible implementation manner of the embodiment, the converter model in the slag splashing and protecting furnace process is simulated by using the Fluent finite element simulation analysis software to simulate the slag splashing and protecting furnace process, and a best slag splashing and protecting furnace lance height control curve library on a time axis under various combinations is established, including:

[0031] The slag splashing and protecting furnace process is simulated by using the Fluent finite element simulation analysis software after the slag splashing and protecting furnace process model is established by using the solid works software;

[0032] The best slag splashing and protecting furnace lance height at any moment under various types of information and various combinations is obtained by comparing the velocity vector diagram simulation analysis of the circulating flow of the converter inner slag under the action of the slag splashing nitrogen gas, and the best slag splashing and protecting furnace lance height control curve on the time axis under the combination is obtained.

[0033] The best slag splashing and protecting furnace lance height control curve library on the time axis under various combinations is established.

[0034] As a possible implementation manner of the embodiment, the correction principle that the best slag splashing and protecting furnace lance height fitting curve and the best slag splashing and protecting furnace lance height simulation curve are compared and corrected on the time axis of the slag splashing and protecting furnace lance height is:

[0035] H 修正(t) = H 模拟(t) ± |H 模拟(t) -H 拟合(t) |

[0036] Wherein:

[0037] H 修正(t) is the corrected height value of the slag splashing and protecting furnace lance height control model at the time t when the slag splashing time is t under the condition of the furnace;

[0038] H 模拟(t) is the fitting height value of the slag splashing and furnace protecting lance position control at the time t when the slag splashing time under the present furnace condition is t;

[0039] H 拟合(t) is the fitting height value of the slag splashing and furnace protecting lance position control at the time t when the slag splashing time under the present furnace condition is t;

[0040] |H 模拟(t) -H 拟合(t) |is the absolute value of H 模拟(t) and H 拟合(t) .

[0041] When the converter bottom is in the rising trend, the symbol “-” in the symbol “±” is taken, and when the converter bottom is in the falling trend, the symbol “+” in the symbol “±” is taken.

[0042] As a possible implementation manner of the embodiment, the adjustment principle of further adjusting the modified slag splashing and furnace protecting lance position height control curve on the time axis under the present furnace condition in real time is as follows:

[0043]

[0044] Wherein:

[0045] H 实际(t) is the actual height value of the slag splashing and furnace protecting lance position control at the time t when the slag splashing time under the present furnace condition is t;

[0046] H 修正(t) is the model correction height value of the slag splashing and furnace protecting lance position control at the time t when the slag splashing time under the present furnace condition is t;

[0047] I0 is the noise intensity at the time t when the slag splashing time under the present furnace condition is t,

[0048] I 最大 is the maximum noise intensity of the noise interval at the time t when the slag splashing time under the present furnace condition is t,

[0049] I 最小 is the minimum noise intensity of the noise interval at the time t when the slag splashing time under the present furnace condition is t.

[0050] In the second aspect, the embodiment of the present application provides a converter automatic slag splashing lance position control device, which comprises:

[0051] The primary database establishing module is used for collecting relevant information of the present heat and historical heats and establishing a historical heat database, wherein the relevant information at least includes molten iron conditions, scrap steel conditions, slagging auxiliary materials, blowing endpoint process target requirements, splashing slag protection oxygen lance control curve, and converter bottom blowing flow, the molten iron conditions include molten iron composition, temperature, weight and slag amount, the scrap steel conditions include scrap steel structure type, weight and scrap steel addition ratio, and the slagging auxiliary materials include types, compositions and addition amounts of cooling agents and slagging agents, and the blowing endpoint process target requirements include endpoint oxygen content, endpoint temperature, final slag basicity and composition.

[0052] The secondary database establishing module is used for combing and analyzing data information and conditions of the historical heat database and performing segmented interval processing, and forming a secondary database after processing.

[0053] The tertiary database establishing module is used for establishing a converter model in the splashing slag protection process, simulating the splashing slag protection process by using Fluent finite element simulation analysis software, and establishing a best splashing slag protection lance position control height simulation curve library on the time axis under various combined conditions, i.e., a tertiary database.

[0054] The simulation curve determining module is used for corresponding to the best splashing slag protection lance position control height simulation curve under the same or similar conditions of the present heat data information in the tertiary database in combination with specific data information of the present heat.

[0055] The curve fitting module is used for simultaneously performing curve fitting on the splashing slag protection lance position control height curve under various combinations in the secondary database, so as to obtain a splashing slag protection lance position control height fitting curve library under various combined conditions.

[0056] The fitting curve determining module is used for corresponding to find the best splashing slag protection lance position control height fitting curve under the same or similar conditions of the present heat data information in the splashing slag protection lance position control height fitting curve library under various combined conditions in combination with specific data information of the present heat.

[0057] The curve correcting module is used for comparing and correcting the splashing slag protection lance position control height on the time axis by using the best splashing slag protection lance position control height fitting curve and the best splashing slag protection lance position control height simulation curve in the condition of the present heat data information, so as to obtain a corrected splashing slag protection lance position height control curve on the time axis under the condition of the present heat.

[0058] The corrected curve adjusting module is used for further adjusting the corrected splashing slag protection lance position height control curve on the time axis under the condition of the present heat in real time according to the audio signal of the audio slagging system after starting splashing slag.

[0059] The self-learning module is configured to feed back the adjusted correction slag gun position height control curve information on the time axis under the current furnace condition to a slag gun position height control fitting curve library for self-learning.

[0060] In a third aspect, an electronic device is provided, which comprises a processor, a memory and a bus, the memory stores machine readable instructions executable by the processor, when the electronic device is running, the processor and the memory communicate through the bus, and the processor executes the machine readable instructions to perform the steps of any of the above-mentioned automatic slag gun position control methods.

[0061] In a fourth aspect, a storage medium is provided, which stores a computer program, when the computer program is run by a processor, the steps of any of the above-mentioned automatic slag gun position control methods are performed.

[0062] The technical solutions of the embodiments of the present application have the following beneficial effects:

[0063] The present application collects relevant information of historical heats, establishes a historical heat information database, analyzes and segments the data information and conditions of the historical database, combines different segmented intervals according to different types of information, and obtains secondary databases under various combinations, respectively. A converter model in the slag gun protection process is established, and the Fluent finite element simulation analysis software is used to simulate the slag gun protection process, and a best slag gun protection gun position control height curve library (tertiary database) under various combinations is established. In combination with the specific data information of the current heat, the best slag gun protection gun position control height curve (simulation curve) under the same or similar conditions as the data information of the current heat is correspondingly obtained in the tertiary database. At the same time, the slag gun protection gun position control height curve (fitting curve) under the same or similar conditions as the data information of the current heat is correspondingly found in the fitting curve library, and the fitting curve and the simulation curve are compared and corrected in the time axis for slag gun protection gun position control height. The slag gun protection gun position control curve (correction curve) on the time axis under the condition of the current heat is obtained, and finally the audio signal of the audio slag system is further adjusted in real time to obtain the slag gun protection gun position control height curve (actual curve) on the time axis under the condition of the current heat. The scientific and accurate control of the slag gun protection gun position is effectively realized, the slag gun protection effect is improved, the converter operation rate is improved, the process production cost is reduced, and the economic benefit is significant and the popularization prospect is broad. BRIEF DESCRIPTION OF DRAWINGS

[0064] Figure 1 is a converter automatic slag gun position control method flow chart according to an exemplary embodiment;

[0065] Figure 2It is a structure schematic diagram of a converter automatic slag splashing gun position control device according to an exemplary embodiment;

[0066] Figure 3 It is a flow chart of converter automatic slag splashing gun position control using the converter automatic slag splashing gun position control device;

[0067] Figure 4 It is a comparison schematic diagram of a simulation curve, a fitting curve and a model recommended curve of slag splashing gun position height control on a time axis under the condition of the first heat in the specific example 1;

[0068] Figure 5 It is a comparison schematic diagram of a simulation curve, a fitting curve and a model recommended curve of slag splashing gun position height control on a time axis under the condition of the second heat in the specific example 2. DETAILED DESCRIPTION

[0069] In order to more clearly illustrate the technical features of the scheme of the present application, the present application is described in detail below through specific embodiments, and in combination with the accompanying drawings.

[0070] As shown in the accompanying drawings, Figure 1 A converter automatic slag splashing gun position control method provided by an embodiment of the present application includes the following steps:

[0071] Collect relevant information of the current heat and historical heats, and establish a historical heat database, wherein the relevant information at least includes molten iron conditions, scrap steel conditions, slag-making auxiliary materials, blowing endpoint process target requirements, slag splashing and furnace protection oxygen lance control curve, and converter bottom blowing flow rate, the molten iron conditions include molten iron composition, temperature, weight and slag amount, the scrap steel conditions include scrap steel structure type, weight and scrap steel addition ratio, the slag-making auxiliary materials include types, compositions and addition amounts of cooling agents and slag-forming agents, and the blowing endpoint process target requirements include endpoint oxygen content, endpoint temperature, final slag basicity and composition;

[0072] Carry out combing analysis and segmented interval processing on data information and conditions of the historical heat database, and form a secondary database by processing the data;

[0073] Establish a converter model in the slag splashing and furnace protection process, simulate the slag splashing and furnace protection process by using Fluent finite element simulation analysis software, and establish a simulation curve library of optimal slag splashing and furnace protection gun position control height on a time axis under various combination conditions, i.e., a tertiary database;

[0074] Corresponding optimal slag splashing and furnace protection gun position control height simulation curves of the same or similar conditions as the data information of the current heat are output in the tertiary database in combination with specific data information of the current heat;

[0075] Meanwhile, the gun position control height curve of the slag splashing and protecting furnace under various combinations is curve-fitted in the secondary database to obtain a fitting curve library of the gun position control height of the slag splashing and protecting furnace under various combinations;

[0076] Similarly, combined with the specific data information of the present furnace, the best gun position control height fitting curve of the slag splashing and protecting furnace corresponding to the same or similar conditions of the data information of the present furnace is found in the fitting curve library of the gun position control height of the slag splashing and protecting furnace under various combinations;

[0077] Under the condition of the data information of the present furnace, the gun position control height of the slag splashing and protecting furnace is compared and corrected on the time axis by using the best gun position control height fitting curve and the best gun position control height simulation curve to obtain a corrected gun position control height curve of the slag splashing and protecting furnace on the time axis under the condition of the present furnace;

[0078] After starting the slag splashing, the corrected gun position control height curve of the slag splashing and protecting furnace on the time axis under the condition of the present furnace is further adjusted in real time according to the audio signal of the audio slag system;

[0079] The adjusted corrected gun position control height curve of the slag splashing and protecting furnace on the time axis under the condition of the present furnace is fed back to the fitting curve library of the gun position control height of the slag splashing and protecting furnace for self-learning.

[0080] As a possible implementation manner of the embodiment, the data information and conditions of the historical furnace database are carded, analyzed and processed in segments, which includes:

[0081] The Si and Mn contents of the molten iron are segmented every 0.1%;

[0082] The P content of the molten iron is segmented every 0.01%;

[0083] The slag quantity of the molten iron is segmented every 500 kg;

[0084] Various scrap steels are segmented every 5000 kg;

[0085] The addition quantity of the slag-making auxiliary material is segmented every 500 kg;

[0086] The blowing end temperature is segmented every 5℃;

[0087] The blowing end [O] content is segmented every 50 ppm;

[0088] The oxygen lance control gun position height is segmented every 50 mm;

[0089] The converter bottom blowing flow is segmented every 50 m 3 / h;

[0090] After the segmentation of various types of information, the secondary database under various combinations is obtained by combining the segmented intervals of various types of information.

[0091] As a possible implementation manner of the embodiment, the converter model in the slag splashing protection process is simulated by using Fluent finite element simulation analysis software to simulate the slag splashing protection process, and a library of optimal slag splashing protection gun position control height curves on a time axis under various combinations is established, including:

[0092] The converter model in the slag splashing protection process is established by using solid works software, and the slag splashing protection process is simulated by using Fluent finite element simulation analysis software;

[0093] The optimal slag splashing protection gun position height at any moment under various types of information and various combinations is obtained by comparing the velocity vector diagram simulation analysis of the circulating flow of the converter slag under the action of the slag splashing nitrogen gas, and the optimal slag splashing protection gun position height curve on the time axis under the combination condition is obtained.

[0094] The library of optimal slag splashing protection gun position control height curves on the time axis under various combinations is established.

[0095] As a possible implementation manner of the embodiment, the correction principle of comparing and correcting the slag splashing protection gun position control height on the time axis by using the optimal slag splashing protection gun position control height fitting curve and the optimal slag splashing protection gun position control height simulation curve is:

[0096] H 修正(t) = H 模拟(t) ± |H 模拟(t) -H 拟合(t) |

[0097] Wherein:

[0098] H 修正(t) is the corrected height value of the slag splashing protection gun position control model at the time t under the slag splashing time of the furnace condition;

[0099] H 模拟(t) is the simulation height value of the slag splashing protection gun position control at the time t under the slag splashing time of the furnace condition;

[0100] H 拟合(t) is the fitting height value of the slag splashing protection gun position control at the time t under the slag splashing time of the furnace condition;

[0101] |H 模拟(t) -H 拟合(t) | is the absolute value of H 模拟(t) and H 拟合(t) ;

[0102] The converter bottom takes the "-" in the operator symbol "+" when the converter bottom is in the rising trend, and takes the "+" in the operator symbol "+" when the converter bottom is in the falling trend.

[0103] As a possible implementation manner of the embodiment, the adjustment principle of further adjusting the modified slag protection gun height control curve on the time axis under the current furnace condition is as follows:

[0104]

[0105] Wherein:

[0106] H 实际(t) is the actual height value of the slag protection gun position control at the time t when the slagging time under the current furnace condition is t;

[0107] H 修正(t) is the modified height value of the slag protection gun position control model at the time t when the slagging time under the current furnace condition is t;

[0108] I0 is the noise intensity at the time t when the slagging time under the current furnace condition is t,

[0109] I 最大 is the maximum noise intensity of the noise interval at the time t when the slagging time under the current furnace condition is t,

[0110] I 最小 is the minimum noise intensity of the noise interval at the time t when the slagging time under the current furnace condition is t.

[0111] As Figure 2 shown, the converter automatic slag protection gun position control device provided by the embodiment of the application comprises:

[0112] A first database establishing module is configured to collect relevant information of the current furnace and historical furnaces, and establish a historical furnace database, wherein the relevant information at least includes molten iron conditions, scrap steel conditions, slagging auxiliary materials, blowing endpoint process target requirements, slag protection oxygen lance control curves, and converter bottom blowing flow, the molten iron conditions include molten iron composition, temperature, weight and slag amount, the scrap steel conditions include scrap steel structure type, weight and scrap steel addition ratio, the slagging auxiliary materials include types, compositions and addition amounts of cooling agents and slag forming agents, and the blowing endpoint process target requirements include endpoint oxygen content, endpoint temperature, final slag basicity and composition.

[0113] A second database establishing module is configured to analyze and process the data information and conditions of the historical furnace database in segments, and form a second database by processing the data.

[0114] The tertiary database establishing module is used to establish a converter model in the slag splashing and protecting furnace process, simulate the slag splashing and protecting furnace process by using the Fluent finite element simulation analysis software, and establish a simulation curve library of the optimal slag splashing and protecting furnace gun position control height on a time axis under various combination conditions, i.e., a tertiary database.

[0115] The simulation curve determining module is used to correspond to the optimal slag splashing and protecting furnace gun position control height simulation curve under the same or similar conditions of the current furnace data information in the tertiary database in combination with the specific data information of the current furnace.

[0116] The curve fitting module is used to simultaneously perform curve fitting on the slag splashing and protecting furnace gun position control height curves under various combinations in the secondary database, so as to obtain a fitting curve library of the slag splashing and protecting furnace gun position control height under various combination conditions.

[0117] The fitting curve determining module is used to correspond to the optimal slag splashing and protecting furnace gun position control height fitting curve under the same or similar conditions of the current furnace data information in the fitting curve library of the slag splashing and protecting furnace gun position control height under various combination conditions in combination with the specific data information of the current furnace.

[0118] The curve correcting module is used to compare and correct the slag splashing and protecting furnace gun position control height on the time axis by using the optimal slag splashing and protecting furnace gun position control height fitting curve and the optimal slag splashing and protecting furnace gun position control height simulation curve in the condition of the current furnace data information, so as to obtain a corrected slag splashing and protecting furnace gun position control height curve on the time axis under the condition of the current furnace.

[0119] The corrected curve adjusting module is used to further adjust the corrected slag splashing and protecting furnace gun position control height curve on the time axis under the condition of the current furnace in real time according to the audio signal of the audio slag system after starting the slag splashing.

[0120] The self-learning module is used to feed back the relevant information of the adjusted corrected slag splashing and protecting furnace gun position control height curve on the time axis under the condition of the current furnace to the fitting curve library of the slag splashing and protecting furnace gun position control height for self-learning.

[0121] As shown in Figure 3 The specific process of the converter automatic slag splashing gun position control by using the converter automatic slag splashing gun position control device is as follows.

[0122] Step 1, first, collect the relevant information of the current furnace and the historical furnaces, and establish a historical furnace information database.

[0123] The historical furnace data information includes the conditions of molten iron entering the furnace (composition, temperature, weight, slag amount, etc.), scrap steel conditions (scrap steel structure type, weight, scrap steel addition ratio, etc.), slag-making auxiliary materials, cooling agents, slag-reducing agents, etc. (type, composition, addition amount), process target requirements of blowing endpoint (endpoint oxygen content, endpoint temperature, final slag basicity and composition), splashing slag protection oxygen lance control curve, converter bottom blowing flow, etc.

[0124] Step 2: The data information and conditions of the historical database are analyzed and segmented.

[0125] The Si and Mn contents of the molten iron are segmented every 0.1%, i.e., the interval sequence values of the Si and Mn contents of the molten iron are 0-0.1%, 0.11%-0.2%, 0.21%-0.3%, etc.

[0126] The P content of the molten iron is segmented every 0.01%, i.e., the interval sequence values of the P content of the molten iron are 0.081%-0.09%, 0.091%-0.1%, 0.101%-0.110%, etc.

[0127] The slag amount of the molten iron is segmented every 500 kg;

[0128] Various scrap steels are segmented every 5000 kg;

[0129] The addition amount of slag-making auxiliary materials (including cooling agents, slag-reducing agents, etc.) is segmented every 500 kg;

[0130] The blowing endpoint temperature is segmented every 5°C;

[0131] The blowing endpoint [O] content is segmented every 50 ppm;

[0132] The oxygen lance control gun height is segmented every 50 mm, i.e., the interval sequence values of the oxygen lance control gun height H 枪位 are 1900 mm, 1850 mm, 1800 mm, etc.

[0133] The converter bottom blowing flow is segmented every 50 m 3 / h, i.e., the interval sequence values of the converter bottom blowing flow F 底吹流量 are 700 m 3 / h, 650 m 3 / h, 600 m 3 / h, etc. ...

[0135] After the segmentation of various types of information, the secondary database under various combinations is obtained by combining the different segmentation intervals of various types of information.

[0136] Step 3, using solid works software to establish the converter model in the slag splashing protection process, using Fluent finite element simulation analysis software to simulate the slag splashing protection process. Through the velocity vector diagram simulation analysis of the circulating flow of the slag in the converter under the action of the slag splashing nitrogen gas, the best slag splashing protection gun position height at any time under various combinations of information and various combinations of conditions is obtained by comparison, so as to obtain the best slag splashing protection gun position height curve on the time axis under the combination condition. Thus, the best slag splashing protection gun position control height curve library on the time axis under various combinations of conditions (tertiary database) is established.

[0137] Step 4, combining the specific data information of this heat, the best slag splashing protection gun position control height curve (simulation curve) corresponding to the same or similar conditions of the data information of this heat is obtained in the tertiary database.

[0138] Step 5, at the same time, the slag splashing protection gun position control height curve under various combinations is curve-fitted in the secondary database, and the slag splashing protection gun position control height fitting curve library under various combinations of conditions is obtained.

[0139] Step 6, also combining the specific data information of this heat, the best slag splashing protection gun position control height curve (fitting curve) corresponding to the same or similar conditions of the data information of this heat is found in the fitting curve library.

[0140] Step 7, under the condition of the data information of this heat, the fitting curve and the simulation curve are compared and corrected in the time axis of the slag splashing protection gun position control height. The slag splashing protection gun position height control curve on the time axis under the condition of this heat (corrected curve) is obtained.

[0141] Correction principle:

[0142] H 修正(t) = H 模拟(t) ± |H 模拟(t) -H 拟合(t) |

[0143] Wherein:

[0144] H 修正(t) is the corrected height value of the slag splashing protection gun position control model at time t under the condition of this heat, unit: mm;

[0145] H 模拟(t) is the simulation height value of the slag splashing protection gun position control at time t under the condition of this heat, unit: mm;

[0146] H 拟合(t)The fitted height value of the slag splashing lance position control at time t under the conditions of this furnace, in mm;

[0147] |H 模拟(t) -H 拟合(t) |for H 模拟(t) With H 拟合(t) The absolute value;

[0148] ±: When the converter bottom is in an upward trend, use "-"; when the converter bottom is in a downward trend, use "+".

[0149] Step 8: After the slag splashing begins, further adjustments are made in real time based on the audio signal from the audio slag dissolving system.

[0150] The adjustment principle is as follows:

[0151]

[0152] in:

[0153] H 实际(t) The actual height of the slag splashing lance at time t under the conditions of this furnace run, in mm;

[0154] H 修正(t) The corrected height value for the slag splashing lance position control model at time t under the conditions of this furnace, in mm;

[0155] I0 represents the noise intensity at time t under the conditions of this furnace, in dB;

[0156] I 最大 The maximum noise intensity in the noise range at time t, under the conditions of this furnace, is expressed in dB.

[0157] I 最小 The minimum noise intensity in the noise range at time t, under the conditions of this furnace run, is expressed in dB.

[0158] Step 9, H 实际(t) The relevant information is fed back to the slag splashing furnace protection lance position control height fitting curve library for self-learning. Specific Implementation Example 1:

[0160] Furnace 1: the temperature of molten iron entering the furnace is 1338 DEG C, the composition of molten iron is C: 4.38%; Si: 0.46%; Mn: 0.31%; P: 0.071; S: 0.031%; the amount of scrap steel and molten iron added is (181+50) t; the amount of main slagging materials and alloy added is: lime 26 kg / t, dolomite 7.1 kg / t, ore 6 kg / t; the blowing process is stable, and there is no splashing and dry back phenomenon, and the endpoint is hit once. The TSO result of the sublance at the end of the converter is: [C]: 0.080%, T: 1636 DEG C, the height of the molten pool liquid level h: 836 mm; the simulation curve, the fitting curve and the model recommended curve of the splashing slag protection lance height control on the time axis under the condition of the present furnace are as shown in Figure 4 According to the model recommended curve, the splashing slag protection lance height control is carried out, and the splashing slag effect is good. Specific embodiment 2:

[0162] Furnace 2: the temperature of molten iron entering the furnace is 1372 DEG C, the composition of molten iron is C: 4.31%; Si: 0.36%; Mn: 0.39%; P: 0.073; S: 0.033%; the amount of scrap steel and molten iron added is (180+51) t; the amount of main slagging materials and alloy added is: lime 28 kg / t, dolomite 6.1 kg / t, ore 7.3 kg / t; the blowing process is stable, and there is no splashing and dry back phenomenon, and the endpoint is hit once. The TSO result of the sublance at the end of the converter is: [C]: 0.073%, T: 1646 DEG C, the height of the molten pool liquid level h: 831 mm; the simulation curve, the fitting curve and the model recommended curve of the splashing slag protection lance height control on the time axis under the condition of the present furnace are as shown in Figure 5 According to the model recommended curve, the splashing slag protection lance height control is carried out, and the splashing slag effect is good.

[0163] The present application improves the accuracy of the model by combing and analyzing the data information and conditions of the historical database, segmenting the interval and combining. The converter model in the splashing slag protection process is established by using the solid works software, the splashing slag protection process is simulated by using the Fluent finite element simulation analysis software, the best splashing slag protection lance height curve on the time axis under various combined conditions is obtained, the height curve of the splashing slag protection lance control under various combinations is fitted in the secondary database, the optimization of the historical data is realized, the real-time adjustment idea method of the audio slag signal is adopted, and the control accuracy of the splashing slag lance position on the time axis at any moment under the condition is further improved.

[0164] The electronic device provided by the embodiment of the present application comprises a processor, a memory and a bus, the memory stores machine readable instructions executable by the processor, the processor and the memory communicate through the bus when the device is running, and the processor executes the machine readable instructions to perform the steps of any converter automatic splashing slag lance position control method described above.

[0165] Specifically, the memory and the processor can be general memory and processor, which are not specifically limited here, and when the processor runs the computer program stored in the memory, the converter automatic splashing slag gun position control method described above can be executed.

[0166] Those skilled in the art can understand that the structure of the electronic device does not constitute a limitation on the electronic device, and can include more or fewer components than the illustration, or combine certain components, or split certain components, or different component arrangements.

[0167] In some embodiments, the electronic device can also include a touch screen that can be used to display a graphical user interface (e.g., a start interface of an application) and receive user operations for the graphical user interface (e.g., a start operation for the application). The specific touch screen can include a display panel and a touch panel. The display panel can be configured in the form of an LCD (Liquid Crystal Display), an OLED (Organic Light-Emitting Diode), etc. The touch panel can collect user contact or non-contact operations on or near it and generate pre-set operation instructions, such as user operations on or near the touch panel using a finger, a stylus, or any suitable object or accessory. In addition, the touch panel can include two parts: a touch detection device and a touch controller. The touch detection device detects the touch position and posture of the user and detects the signals generated by the touch operation and transmits the signals to the touch controller; the touch controller receives the touch information from the touch detection device and converts it into information that the processor can process and sends it to the processor, and can also receive and execute the commands from the processor. In addition, the touch panel can be implemented in various types such as resistive, capacitive, infrared, and surface acoustic wave, and can also be implemented in any technology developed in the future. Further, the touch panel can cover the display panel, and the user can operate on or near the touch panel covering the display panel according to the graphical user interface displayed on the display panel. After the touch panel detects the operation on or near it, it transmits to the processor to determine the user input, and then the processor provides corresponding visual output on the display panel in response to the user input. In addition, the touch panel and the display panel can be implemented as two independent components or integrated.

[0168] Corresponding to the above-mentioned application start method, the embodiment of the present application also provides a storage medium, which stores a computer program, and the computer program is executed by the processor to perform the steps of any converter automatic splashing slag gun position control method described above.

[0169] The application program starting device provided in the embodiments of the present application can be specific hardware on the device or software or firmware installed on the device, etc. The device provided in the embodiments of the present application has the same implementation principle and technical effects as the foregoing method embodiments, and for brief description, the part not mentioned in the device embodiment part can be referred to the corresponding content in the foregoing method embodiments. Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the system, device and unit described above can be referred to the corresponding process in the foregoing method embodiments, which will not be repeated here.

[0170] Those skilled in the art can understand that the embodiments of the present application can be provided as a method, a system or a computer program product. Therefore, the present application can adopt a complete hardware embodiment, a complete software embodiment or an embodiment combining software and hardware aspects. Moreover, the present application can adopt a computer program product in the form of one or more computer usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer usable program codes.

[0171] In the embodiments provided in the present application, it should be understood that the disclosed device and method can be implemented in other ways. The device embodiments described above are only schematic. For example, the division of the modules is only a logical function division, and there can be another division manner in actual implementation. For example, a plurality of modules or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the shown or discussed modules can be indirect coupling or communication connection through some communication interfaces, and can be electrical, mechanical or other forms.

[0172] The modules illustrated as separate components can or can not be physically separate, and the components illustrated as modules can or can not be physical modules, i.e. can be located in one place or distributed to a plurality of network modules. Some or all of the modules can be selected according to actual needs to achieve the purpose of the present embodiment.

[0173] In addition, each functional module in the embodiments provided in the present application can be integrated in one processing module, or each module can exist physically independently, or two or more modules can be integrated in one module.

[0174] The computer program instructions can also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer-implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart block or blocks. Figure 1 one or more flow or blocks Figure 1 one or more flow or blocks

[0175] These computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture including instructions which implement the function specified in the flowchart block or blocks. Figure 1 one or more flow or blocks Figure 1 one or more flow or blocks

[0176] The computer program instructions can also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer-implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart block or blocks. Figure 1 one or more flow or blocks Figure 1 one or more flow or blocks

[0177] Finally, it should be noted that the above-mentioned embodiments are merely intended to illustrate the technical solutions of the present application, rather than limit the same. Although the present application is described in detail with reference to the above embodiments, those skilled in the art should understand that the specific embodiments of the present application can be modified or replaced equivalently without departing from the spirit and scope of the present application, and any modification or replacement without departing from the spirit and scope of the present application should be covered in the protection scope of the claims of the present application.

Claims

1. A method for controlling a position of a slag splashing lance in a converter, characterized by, Comprising the following steps: Collecting relevant information of the present and historical heats and establishing a historical heat database, the relevant information at least including molten iron conditions, scrap conditions, slagging auxiliary materials, blowing endpoint process target requirements, splashing slag protection oxygen lance control curve, converter bottom blowing flow, the molten iron conditions including molten iron composition, temperature, weight and slag amount, the scrap conditions including scrap structure type, weight and scrap addition ratio; the slagging auxiliary materials including types, composition and addition amount of cooling agent and slagging agent; the blowing endpoint process target requirements including endpoint oxygen content, endpoint temperature, final slag basicity and composition; Carrying out carding analysis and segmented interval processing on the data information and conditions of the historical heat database, forming a secondary database with the processed data; Establishing a converter model in the splashing slag protection process, simulating the splashing slag protection process by using Fluent finite element simulation analysis software, and establishing a simulation curve library of the optimal splashing slag protection lance position control height on the time axis under various combination conditions, i.e. a tertiary database; Corresponding out the optimal splashing slag protection lance position control height simulation curve under the same or similar conditions of the present data information in the tertiary database in combination with the specific data information of the present heat; Meanwhile, carrying out curve fitting on the splashing slag protection lance position control height curves under various combinations in the secondary database, obtaining a splashing slag protection lance position control height fitting curve library under various combination conditions; Similarly, corresponding to find the optimal splashing slag protection lance position control height fitting curve under the same or similar conditions of the present data information in the splashing slag protection lance position control height fitting curve library under various combination conditions in combination with the specific data information of the present heat; Under the present data information conditions, comparing and correcting the optimal splashing slag protection lance position control height fitting curve and the optimal splashing slag protection lance position control height simulation curve on the time axis to obtain a corrected splashing slag protection lance position height control curve on the time axis under the present heat conditions; After starting splashing slag, further adjusting the corrected splashing slag protection lance position height control curve on the time axis under the present heat conditions in real time according to the audio signal of the audio slagging system; Feeding the relevant information of the adjusted corrected splashing slag protection lance position height control curve on the time axis under the present heat conditions to the splashing slag protection lance position control height fitting curve library for self-learning; The correction principle of comparing and correcting the optimal splashing slag protection lance position control height fitting curve and the optimal splashing slag protection lance position control height simulation curve on the time axis is: H 修正（t） =H 模拟（t） ±|H 模拟（t） -H 拟合（t） | Wherein: H 修正（t） The modified height value of the slag splashing protection lance position control model for the slag splashing time t of the furnace condition. H 模拟（t） The simulated height value of the slag splashing protection lance position at the time t when the slag splashing time of the furnace is controlled under the condition of the furnace. H 拟合（t） The fitting height value of the slag splashing protection lance position control at the time t of the slag splashing time for this furnace condition is obtained. |H 模拟（t） -H 拟合（t） | as H 模拟（t） with H 拟合（t） the absolute value of the difference between the two values; Taking "-" in the operator symbol "+" when the converter bottom is in the rising trend, and taking "+" in the operator symbol "+" when the converter bottom is in the falling trend.

2. The method of claim 1, wherein, The carding analysis and segmented interval processing on the data information and conditions of the historical heat database includes: The Si and Mn contents of the molten iron are segmented every 0.1%; The P amount of the molten iron is segmented every 0.01%; The slag amount of the molten iron is segmented every 500 kg; Various scrap is segmented every 5000 kg; The addition amount of the slagging auxiliary materials is segmented every 500 kg; The blowing end point temperature is segmented every 5 DEG C; The blowing end point [O] content is segmented every 50ppm; The oxygen lance control height is segmented every 50mm; The converter bottom blowing flow is 50 m3 / h per 50 m2 of the bottom area of the converter. 3 / h is a subsection interval; After segmenting the various information, the secondary database under various combinations is obtained by combining the segmented information.

3. The method of claim 2, wherein the method further comprises: The converter model in the process of slag splashing is established, the process of slag splashing is simulated by using the Fluent finite element simulation analysis software, and the optimal slag splashing lance height control curve library on the time axis under various combinations is established, including: The converter model in the process of slag splashing is established by using the solid works software, and the process of slag splashing is simulated by using the Fluent finite element simulation analysis software; The optimal slag splashing lance height at any moment under various information and various combinations is obtained by comparing the velocity vector diagram simulation analysis of the circulating flow of the converter slag under the action of the slag splashing nitrogen, and the optimal slag splashing lance height control curve on the time axis under the combination condition is obtained. The optimal slag splashing lance height control curve library on the time axis under various combinations is established.

4. The method of claim 3, wherein the method further comprises: The adjustment principle of the modified slag splashing lance height control curve on the time axis under the condition of the current furnace is further adjusted, and the adjustment principle is: H 实际（t） =H 修正（t） +100(I0- ) / I0 Wherein: H 实际（t） The actual height value of the slag splashing protection lance position control at the time t when the slag splashing time of the furnace is controlled under the condition of the furnace. H 修正（t） The modified height value of the slag splashing protection lance position control model for the slag splashing time t of the furnace condition. I0 is the noise intensity at the time t under the condition of the current furnace, I 最大 The maximum noise intensity of the noise interval at time t for the furnace condition under the slag splashing time is I 最小 The minimum noise intensity of the noise interval at the time t for the slag splashing time under the condition of the furnace.

5. A device for automatic control of the position of a slag splashing lance in a converter, characterized in that The first database establishment module is used for collecting the related information of the current furnace and the historical furnace and establishing the historical furnace database, and the related information at least includes the molten iron condition, the scrap steel condition, the slag auxiliary material, the blowing end point process target requirement, the slag splashing furnace oxygen lance control curve, and the converter bottom blowing flow, wherein the molten iron condition includes the molten iron composition, the temperature, the weight and the slag amount, the scrap steel condition includes the scrap steel structure type, the weight and the scrap steel addition ratio, and the slag auxiliary material includes the types, the composition and the addition amount of the cooling agent and the slag forming agent, and the blowing end point process target requirement includes the end point oxygen content, the end point temperature, the final slag basicity and the composition; The secondary database establishment module is used for combing and analyzing the data information and the conditions of the historical furnace database and segmenting the intervals, and the processed data forms the secondary database; The third database establishment module is used for establishing the converter model in the process of slag splashing, simulating the process of slag splashing by using the Fluent finite element simulation analysis software, and establishing the optimal slag splashing lance height control simulation curve library on the time axis under various combinations, that is, the third database; The simulation curve determination module is used for corresponding the optimal slag splashing lance height control simulation curve of the same or similar conditions of the current data information in the third database by combining the specific data information of the current furnace; The curve fitting module is used for simultaneously fitting the slag splashing lance height control curve under various combinations in the secondary database, and obtaining the slag splashing lance height control fitting curve library under various combinations. ​ The fitting curve determination module is configured to find the best slag splashing and furnace protecting lance position control height fitting curve corresponding to the same or similar conditions of the data information of the current furnace under various combination conditions in the fitting curve library of the slag splashing and furnace protecting lance position control height under various combination conditions in combination with the specific data information of the current furnace; The curve correction module is configured to compare and correct the best slag splashing and furnace protecting lance position control height fitting curve and the best slag splashing and furnace protecting lance position control height simulation curve on the time axis under the data information of the current furnace to obtain the corrected slag splashing and furnace protecting lance position control height curve on the time axis under the conditions of the current furnace; The corrected curve adjustment module is configured to further adjust the corrected slag splashing and furnace protecting lance position control height curve on the time axis under the conditions of the current furnace in real time according to the audio signal of the audio slag system after the slag splashing is started; The self-learning module is configured to feed back the relevant information of the adjusted corrected slag splashing and furnace protecting lance position control height curve on the time axis under the conditions of the current furnace to the fitting curve library of the slag splashing and furnace protecting lance position control height for self-learning. The correction principle of comparing and correcting the best slag splashing and furnace protecting lance position control height fitting curve and the best slag splashing and furnace protecting lance position control height simulation curve on the time axis is as follows: H 修正（t） =H 模拟（t） ±|H 模拟（t） -H 拟合（t） | Wherein: H 修正（t） The modified height value of the slag splashing protection lance position control model for the slag splashing time t of the furnace condition. H 模拟（t） The simulated height value of the slag splashing protection lance position at the time t when the slag splashing time of the furnace is controlled under the condition of the furnace. H 拟合（t） The fitting height value of the slag splashing protection lance position control at the time t of the slag splashing time for this furnace condition is obtained. |H 模拟（t） -H 拟合（t） |As H 模拟（t） With H 拟合（t） the absolute value; The minus sign "-" in the operator symbol "+" is taken when the converter bottom is in the rising trend, and the plus sign "+" in the operator symbol "+" is taken when the converter bottom is in the descending trend.

6. An electronic device, comprising: The electronic device includes a processor, a memory and a bus, the memory stores machine readable instructions executable by the processor, when the electronic device is running, the processor and the memory communicate through the bus, the processor executes the machine readable instructions to execute the steps of the converter automatic slag splashing lance position control method in any one of claims 1-4.

7. A storage medium, characterized by The storage medium stores a computer program, when the computer program is run by the processor, the steps of the converter automatic slag splashing lance position control method in any one of claims 1-4 are executed.

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