Method, device and equipment for charging control of a converter
By acquiring the first residual heat during converter steelmaking and the sulfur content of the finished steel grade, the type and quality of cold materials are automatically determined, solving the problem of low accuracy in converter heat balance control and achieving precise heat management and stable product quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- BEIJING SHOUGANG CO LTD
- Filing Date
- 2026-03-06
- Publication Date
- 2026-06-12
AI Technical Summary
The low precision of heat balance control during converter steelmaking makes it difficult to accurately control the addition of cold materials through manual operation, resulting in inaccurate heat regulation and affecting composition and quality.
By acquiring the first residual heat during converter steelmaking, and based on the residual heat and the sulfur content of the finished steel grade, the type and quality of cold material are automatically determined, enabling precise addition of cold material to absorb residual heat. Combined with the use of heat-replenishing agents, thermal balance control is achieved.
It improves the accuracy of converter heat balance control, ensures that the sulfur content of the final product meets the requirements, reduces human error, and improves steelmaking efficiency and quality stability.
Smart Images
Figure CN122189268A_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of converter control technology, and particularly relates to a method, device and equipment for controlling the feeding of a converter. Background Technology
[0002] In the steelmaking process, the thermal balance of the converter is crucial. Excessive heat can lead to overheating of the molten steel, affecting composition control and quality; insufficient heat increases operational complexity and also affects composition control and quality.
[0003] Currently, heat balance in converter steelmaking is achieved by adding cold charge, and the addition of cold charge relies primarily on manual experience. Operators manually select and add cold charge based on the temperature and composition of the molten iron, as well as process requirements. However, this method has several drawbacks. First, manual judgment is subjective, making it difficult to precisely control the addition of cold charge and easily leading to inaccurate heat regulation. Second, the operating conditions in steelmaking are complex and variable, making it difficult for manual operators to adapt quickly, especially when handling special steel grades or complex processes, which can easily result in errors. Therefore, manual operation leads to low precision in converter heat balance control. Summary of the Invention
[0004] This invention provides a method, apparatus, and equipment for controlling the feeding of a converter, which solves the technical problem of low accuracy in the thermal balance control of the converter.
[0005] In a first aspect, embodiments of the present invention provide a method for controlling the feeding of a converter, comprising: acquiring a first residual heat in the converter during steelmaking; if the first residual heat is greater than a preset first heat threshold, determining the type and quality of at least one cold material based on the first residual heat and a preset sulfur content of the finished steel grade, wherein the cold material is used to absorb the residual heat; and controlling the addition of the cold material to the converter based on the type and quality of the at least one cold material.
[0006] In conjunction with the first aspect of the present invention, in some embodiments, obtaining the first residual heat of the converter during steelmaking includes: obtaining the heat released by the molten iron, the heat released by the chemical reaction, the heat absorbed by the molten steel, the heat absorbed by the slag, the heat absorbed by the gas, the heat lost by the furnace body, and the heat absorbed by the scrap steel; and determining the first residual heat based on the heat released by the molten iron, the heat released by the chemical reaction, the heat absorbed by the molten steel, the heat absorbed by the slag, the heat absorbed by the gas, the heat lost by the furnace body, and the heat absorbed by the scrap steel.
[0007] In conjunction with the first aspect of the present invention, in some embodiments, determining the first remaining heat based on the heat released by the molten iron, the heat released by the chemical reaction, the heat absorbed by the molten steel, the heat absorbed by the slag, the heat absorbed by the gas, the heat lost by the furnace body, and the heat absorbed by the scrap steel includes: summing the heat released by the molten iron and the heat released by the chemical reaction as the total released heat; summing the heat absorbed by the molten steel, the heat absorbed by the slag, the heat absorbed by the gas, the heat lost by the furnace body, and the heat absorbed by the scrap steel as the total absorbed heat; and taking the difference between the total released heat and the total absorbed heat as the first remaining heat.
[0008] In conjunction with the first aspect of the present invention, in some embodiments, determining the type and quality of at least one cold material based on the first residual heat and a preset sulfur content of the finished steel grade includes: obtaining the heat absorbed by the coarse ash in the converter; taking the difference between the first residual heat and the heat absorbed by the coarse ash as the second residual heat; and determining the type and quality of the at least one cold material based on the second residual heat and the sulfur content of the finished steel grade.
[0009] In conjunction with the first aspect of the present invention, in some embodiments, determining the type and quality of the at least one cold material based on the second residual heat and the sulfur content of the finished steel grade includes: determining the estimated required quality of ore for the converter during steelmaking based on the second residual heat; and determining the type and quality of the at least one cold material based on the second residual heat, the estimated required quality, and the sulfur content of the finished steel grade.
[0010] In conjunction with the first aspect of the present invention, in some embodiments, determining the type and quality of the at least one cold material based on the second residual heat, the estimated required mass, and the sulfur content of the finished steel grade includes: determining the type of the at least one cold material based on the estimated required mass and the sulfur content of the finished steel grade; and determining the mass of each cold material among the at least one cold material based on the second residual heat, the estimated required mass, the sulfur content of the finished steel grade, and the type of the at least one cold material.
[0011] In conjunction with the first aspect of the present invention, in some embodiments, the method further includes: if the first residual heat is less than a preset second heat threshold, determining the mass of a heat-replenishing agent based on the first residual heat; wherein the second heat threshold is less than or equal to the first heat threshold; and controlling the addition of the heat-replenishing agent to the converter based on the mass of the heat-replenishing agent.
[0012] In conjunction with the first aspect of the present invention, in some embodiments, determining the mass of the heat-replenishing agent based on the first remaining heat includes: taking the difference between the second heat threshold and the first remaining heat as a first value; and taking the quotient of the first value divided by the calorific value per unit mass of the heat-replenishing agent as the mass of the heat-replenishing agent.
[0013] Secondly, embodiments of the present invention provide a converter charging control device, comprising: a heat acquisition unit for acquiring a first residual heat in the converter during steelmaking; a cold material determination unit for determining the type and quality of at least one cold material based on the first residual heat and a preset sulfur content of the finished steel grade if the first residual heat is greater than a preset first heat threshold, wherein the cold material is used to absorb the residual heat; and a control unit for controlling the addition of the cold material to the converter based on the type and quality of the at least one cold material.
[0014] Thirdly, embodiments of the present invention provide an electronic device, including: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the method described in any of the first aspects.
[0015] The one or more technical solutions provided in the embodiments of the present invention achieve at least the following technical effects or advantages: This invention obtains the first residual heat during steelmaking in the converter; if the first residual heat is greater than a preset first heat threshold, based on the first residual heat and a preset sulfur content of the finished steel grade, it determines the type and quality of at least one cold material, which is used to absorb the residual heat; based on the type and quality of at least one cold material, it controls the addition of cold material to the converter. Determining the type and quality of at least one cold material based on the first residual heat allows for adjustment of the type and quality of the added cold material according to the current actual operating conditions of the converter, achieving better absorption of residual heat. This avoids relying solely on manual experience to add cold material, thus avoiding human error and improving the accuracy of the converter's heat balance control.
[0016] In addition, the sulfur content of the finished steel grade was taken into account to determine the type and quality of at least one cold material, so that the sulfur content of the final product met the requirements, thereby improving the production quality of the converter. Attached Figure Description
[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0018] Figure 1This is a flowchart of the charging control method for the converter in an embodiment of the present invention; Figure 2 This is a functional block diagram of the charging control device for the converter in an embodiment of the present invention; Figure 3 This is a schematic diagram of the structure of an electronic device in an embodiment of the present invention. Detailed Implementation
[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.
[0020] In this invention, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Furthermore, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. If the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this invention.
[0021] This invention provides a method for controlling the feeding of a converter, as described in the following embodiments. Figure 1 As shown, the method includes the following steps S101 to S103: S101: Obtain the first residual heat of the converter during steelmaking.
[0022] In some embodiments, obtaining the first residual heat of the converter during steelmaking includes: obtaining the heat released by the molten iron, the heat released by the chemical reaction, the heat absorbed by the molten steel, the heat absorbed by the slag, the heat absorbed by the gas, the heat lost by the furnace body, and the heat absorbed by the scrap steel; and determining the first residual heat based on the heat released by the molten iron, the heat released by the chemical reaction, the heat absorbed by the molten steel, the heat absorbed by the slag, the heat absorbed by the gas, the heat lost by the furnace body, and the heat absorbed by the scrap steel.
[0023] In some implementations, the first residual heat is determined based on the heat released by the molten iron, the heat released by the chemical reaction, the heat absorbed by the molten steel, the heat absorbed by the slag, the heat absorbed by the gas, the heat lost by the furnace body, and the heat absorbed by the scrap steel. This includes: summing the heat released by the molten iron and the heat released by the chemical reaction as the total released heat; summing the heat absorbed by the molten steel, the heat absorbed by the slag, the heat absorbed by the gas, the heat lost by the furnace body, and the heat absorbed by the scrap steel as the total absorbed heat; and taking the difference between the total released heat and the total absorbed heat as the first residual heat.
[0024] S102: If the first residual heat is greater than the preset first heat threshold, based on the first residual heat and the preset sulfur content of the finished steel grade, determine the type and quality of at least one cold material, which is used to absorb the residual heat.
[0025] It should be noted that the sulfur content of finished steel refers to the sulfur content of the finished steel obtained through converter production. The first calorific value threshold can be 0 joules.
[0026] In some embodiments, determining the type and quality of at least one cold material based on a first residual heat and a preset sulfur content of the finished steel grade includes: obtaining the heat absorbed by the coarse ash in the converter; taking the difference between the first residual heat and the heat absorbed by the coarse ash as a second residual heat; and determining the type and quality of at least one cold material based on the second residual heat and the sulfur content of the finished steel grade.
[0027] It should be noted that coarse ash also absorbs heat. Therefore, removing the heat absorbed by coarse ash from the residual heat can improve the accuracy of the residual heat data in the converter, thereby more accurately determining the type and quality of at least one cold material, so as to improve the accuracy of the converter's heat balance control.
[0028] It should be noted that coarse ash can refer to LT coarse ash produced by the LT dry dust removal process in converters.
[0029] In some embodiments, determining the type and quality of at least one cold material based on the second residual heat and the sulfur content of the finished steel grade may include the following steps S1021 to S1022: S1021: Based on the second residual heat, determine the estimated required quality of ore for the converter during steelmaking.
[0030] Specifically, determining the estimated required mass of ore for steelmaking in the converter based on the second residual heat can be achieved by using the quotient of the second residual heat and a preset value as the estimated required mass. The preset value can be the specific heat capacity of the ore.
[0031] S1022: Based on the second residual heat, estimated required quality and sulfur content of finished steel, determine the type and quality of at least one cold material.
[0032] In some implementations, determining the type and quality of at least one cold material based on the second residual heat, the estimated required mass, and the sulfur content of the finished steel grade includes: determining the type of at least one cold material based on the estimated required mass and the sulfur content of the finished steel grade; and determining the mass of each cold material in the at least one cold material based on the second residual heat, the estimated required mass, the sulfur content of the finished steel grade, and the type of at least one cold material.
[0033] Specifically, the method for determining the type and quality of at least one cold material based on the second residual heat, the estimated required quality and the sulfur content of the finished steel grade can be found in Table 1. Table 1 is a relationship table of estimated required quality, sulfur content of the finished steel grade and cold material.
[0034] Table 1:
[0035] For example, if the estimated required mass a ≤ 3000 kg and the sulfur content of the finished steel grade b ≤ 0.012%, then at least one type of cold material includes ore, export sinter, converter cold-pressed briquettes, and hot-pressed iron blocks. The ore has a heat distribution ratio of 60%, the export sinter has a heat distribution ratio of 10%, the converter cold-pressed briquettes have a heat distribution ratio of 20%, and the hot-pressed iron blocks have a heat distribution ratio of 10%. Based on the heat distribution ratio, the mass of each type of cold material can be calculated. Furthermore, using the ore heat distribution ratio of 60% as an example, it illustrates the meaning of the heat distribution ratio: the ore added to the converter can absorb 60% of the second residual heat.
[0036] Below, taking an ore heat distribution ratio of 80% and a hot-pressed iron block heat distribution ratio of 20% as an example, we will illustrate how to calculate the mass of each type of cold material based on the heat distribution ratio, as follows: First, referring to formula (1), determine the temperature change required to cool the molten steel in the converter based on the second residual heat, where Q is the second residual heat, m is the mass of the molten steel in the converter, and c is the specific heat capacity of the molten steel. This represents the temperature change. The second step is to convert the heat distribution ratio into a corresponding cooling distribution ratio. Specifically, if the heat distribution ratio of the ore is 80%, then the cooling distribution ratio of the ore is also 80%. Therefore, the amount of ore added to the converter needs to achieve a reduction in the molten steel temperature. ×80%℃. If the heat distribution ratio of the hot-pressed iron block is 20%, then the cooling distribution ratio of the hot-pressed iron block is also 20%. Therefore, the hot-pressed iron block added to the converter needs to achieve a reduction in the temperature of the molten steel. ×20%℃. Third step: Given that a unit mass of ore can cool the molten steel by d℃, and a unit mass of hot-pressed iron block can cool the molten steel by e℃, then the mass of the ore is... ×80%÷d, the mass of the hot-pressed iron block is: ×20%÷e.
[0037]
[0038] It should be noted that, according to the allocation method in Table 1, as the estimated required quality increases, the proportion of heat allocated to limestone increases, while the proportion allocated to metals decreases. Through process iteration, the allocation method in Table 1 can achieve cost savings while ensuring smelting quality, and also achieve thermal balance. Furthermore, the allocation method in Table 1 also considers the sulfur content of the finished steel grade. The type and quality of cold materials are determined based on the sulfur content of the finished steel grade, ensuring that the product meets production requirements and improving the production quality of the converter.
[0039] S103: Control the addition of cold materials to the converter based on the type and quality of at least one type of cold material.
[0040] In some embodiments, the method further includes: if the first residual heat is less than a preset second heat threshold, determining the mass of the heat-adding agent based on the first residual heat; wherein the second heat threshold is less than or equal to the first heat threshold; and controlling the addition of heat-adding agent to the converter based on the mass of the heat-adding agent.
[0041] It should be noted that the second caloric threshold can be 0 joules.
[0042] In some implementations, determining the mass of the heat-generating agent based on the first residual heat includes: taking the difference between the second heat threshold and the first residual heat as a first value; and taking the quotient of the first value divided by the heat-generating capacity per unit mass of the heat-generating agent as the mass of the heat-generating agent.
[0043] It should be noted that the heat exchanger can be categorized into silica-based, carbonaceous, and composite heat exchangers, which can be selected by the engineer based on actual needs. In the case of composite heat exchangers, the proportions of polymeric iron blocks, ferrosilicon, and graphite balls need to be set to calculate the heat exchange capacity per ton. The specific proportions are selected by the engineer.
[0044] It should be noted that the embodiments of the present invention calculate the remaining heat in the converter through heat balance and automatically select the appropriate type and quantity of cold material according to the remaining heat situation, so as to achieve precise heat control, improve steelmaking efficiency and molten steel quality, and are applicable to heat management and optimization of converter steelmaking in modern steel production.
[0045] It should be noted that the embodiments of the present invention can achieve precise control of heat balance: based on the remaining heat in the converter, it can automatically calculate and select the appropriate type and quantity of cold material, achieving precise heat control and ensuring the smooth progress of the steelmaking process and the stability of molten steel quality. It improves steelmaking efficiency: reducing errors and time spent on manual operation, thus increasing steelmaking efficiency. It is highly adaptable: capable of automatic adjustment according to different steel grades and operating conditions, exhibiting strong adaptability.
[0046] This invention obtains the first residual heat during steelmaking in the converter. If the first residual heat is greater than a preset first heat threshold, based on the first residual heat and a preset sulfur content of the finished steel grade, the type and quality of at least one cold material are determined. This cold material is used to absorb the residual heat. The addition of cold material to the converter is controlled based on the type and quality of the at least one cold material. Determining the type and quality of at least one cold material based on the first residual heat allows for adjustment of the type and quality of the added cold material according to the current actual operating conditions of the converter, achieving better absorption of residual heat. This avoids relying solely on manual experience to add cold material, thus avoiding human error and improving the accuracy of the converter's heat balance control. Furthermore, considering the sulfur content of the finished steel grade in determining the type and quality of at least one cold material ensures that the sulfur content of the final product meets requirements, thereby improving the production quality of the converter.
[0047] Based on the same inventive concept, and referring to Figure 2 As shown, an embodiment of the present invention provides a converter charging control device 10, comprising: a heat acquisition unit 110 for acquiring the first residual heat of the converter during steelmaking; a cold material determination unit 120 for determining the type and quality of at least one cold material based on the first residual heat and a preset sulfur content of the finished steel grade if the first residual heat is greater than a preset first heat threshold, wherein the cold material is used to absorb the residual heat; and a control unit 130 for controlling the addition of cold material to the converter based on the type and quality of at least one cold material.
[0048] It is understood that the heat acquisition unit 110 is specifically used to: acquire the heat released by the molten iron, the heat released by the chemical reaction, the heat absorbed by the molten steel, the heat absorbed by the slag, the heat absorbed by the gas, the heat lost by the furnace body, and the heat absorbed by the scrap steel; and determine the first remaining heat based on the heat released by the molten iron, the heat released by the chemical reaction, the heat absorbed by the molten steel, the heat absorbed by the slag, the heat absorbed by the gas, the heat lost by the furnace body, and the heat absorbed by the scrap steel. Specifically, determining the first remaining heat based on the heat released by the molten iron, the heat released by the chemical reaction, the heat absorbed by the molten steel, the heat absorbed by the slag, the heat absorbed by the gas, the heat lost by the furnace body, and the heat absorbed by the scrap steel includes: summing the heat released by the molten iron and the heat released by the chemical reaction as the total released heat; summing the heat absorbed by the molten steel, the heat absorbed by the slag, the heat absorbed by the gas, the heat lost by the furnace body, and the heat absorbed by the scrap steel as the total absorbed heat; and using the difference between the total released heat and the total absorbed heat as the first remaining heat.
[0049] It is understood that the cold material determination unit 120 includes: an acquisition subunit for acquiring the heat absorbed by the coarse ash in the converter; a difference subunit for subtracting the heat absorbed by the coarse ash from the first residual heat as the second residual heat; and a determination subunit for determining the type and quality of at least one cold material based on the second residual heat and the sulfur content of the finished steel grade.
[0050] Understandably, the determination of the sub-unit is specifically used for: determining the estimated required mass of ore for steelmaking in the converter based on the second residual heat; and determining the type and mass of at least one cold feedstock based on the second residual heat, the estimated required mass, and the sulfur content of the finished steel grade. Specifically, determining the type and mass of at least one cold feedstock based on the second residual heat, the estimated required mass, and the sulfur content of the finished steel grade includes: determining the type of at least one cold feedstock based on the estimated required mass and the sulfur content of the finished steel grade; and determining the mass of each type of cold feedstock within the at least one cold feedstock based on the second residual heat, the estimated required mass, the sulfur content of the finished steel grade, and the type of at least one cold feedstock.
[0051] Understandably, the converter charging control device 10 also includes: a reheating unit, used to determine the mass of the reheating agent based on the first residual heat if the first residual heat is less than a preset second heat threshold; wherein the second heat threshold is less than or equal to the first heat threshold; and to control the addition of reheating agent to the converter based on the mass of the reheating agent. Determining the mass of the reheating agent based on the first residual heat includes: taking the difference between the second heat threshold and the first residual heat as a first value; and dividing the first value by the quotient of the reheating agent's calorific value per unit mass as the mass of the reheating agent.
[0052] It should be understood that further implementation details of the converter charging control device 10 in the embodiments of the present invention are described in the foregoing converter charging control method, and will not be repeated here for the sake of brevity.
[0053] Based on the same inventive concept, embodiments of the present invention also provide an electronic device, such as... Figure 3 As shown, it includes a memory 304, a processor 302, and a computer program stored in the memory 304 and executable on the processor 302. The processor 302 executes the program to implement the steps described in any embodiment of the converter feeding control method.
[0054] Among them, Figure 3In this document, a bus architecture (represented by bus 300) is used. Bus 300 may include any number of interconnected buses and bridges, linking various circuits including one or more processors represented by processor 302 and memory represented by memory 304. Bus 300 may also link various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art and therefore will not be described further herein. Bus interface 305 provides an interface between bus 300 and receiver 301 and transmitter 303. Receiver 301 and transmitter 303 may be the same element, i.e., a transceiver, providing a unit for communicating with various other devices over a transmission medium. Processor 302 is responsible for managing bus 300 and general processing, while memory 304 can be used to store data used by processor 302 during operation.
[0055] The functions described herein can be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software executed by a processor, the functions can be stored as one or more instructions or codes on or transmitted via a computer-readable medium. Other examples and embodiments are within the scope and spirit of this invention and the appended claims. For example, due to the nature of software, the functions described above can be implemented using software executed by a processor, hardware, firmware, hardwired, or any combination thereof. Furthermore, the functional units can be integrated into a single processing unit, or each unit can exist physically separately, or two or more units can be integrated into a single unit.
[0056] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. The device embodiments described above are merely illustrative; for example, the division of units can be a logical functional division, and in actual implementation, there may be other division methods. For instance, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the displayed or discussed mutual coupling, direct coupling, or communication connection may be through some interfaces; the indirect coupling or communication connection between units or modules may be electrical or other forms.
[0057] The units described as separate components may or may not be physically separate. Similarly, the components of the control device may or may not be physical units; they may be located in one place or distributed across multiple units. Some or all of the units can be selected to achieve the purpose of this embodiment, depending on actual needs.
[0058] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, read-only memory (ROM), random access memory (RAM), portable hard drives, magnetic disks, or optical disks.
[0059] The above description is merely an embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of the claims of the present invention.
Claims
1. A method for controlling the charging of a converter, characterized in that, include: To obtain the first residual heat in the converter during steelmaking; If the first residual heat is greater than a preset first heat threshold, based on the first residual heat and the preset sulfur content of the finished steel grade, the type and quality of at least one cold material are determined, and the cold material is used to absorb the residual heat. The addition of the cold material to the converter is controlled based on the type and quality of the at least one cold material.
2. The converter charging control method according to claim 1, characterized in that, The acquisition of the first residual heat in the converter during steelmaking includes: The heat released by the molten iron, the heat released by the chemical reaction, the heat absorbed by the molten steel, the heat absorbed by the slag, the heat absorbed by the gas, the heat lost by the furnace body, and the heat absorbed by the scrap steel are obtained from the converter. The first residual heat is determined based on the heat released by the molten iron, the heat released by the chemical reaction, the heat absorbed by the molten steel, the heat absorbed by the slag, the heat absorbed by the gas, the heat lost by the furnace body, and the heat absorbed by the scrap steel.
3. The converter charging control method according to claim 2, characterized in that, The determination of the first remaining heat based on the heat released by the molten iron, the heat released by the chemical reaction, the heat absorbed by the molten steel, the heat absorbed by the slag, the heat absorbed by the gas, the heat lost by the furnace body, and the heat absorbed by the scrap steel includes: The total heat released is the sum of the heat released by the molten iron and the heat released by the chemical reaction. The total heat absorbed is the sum of the heat absorbed by the molten steel, the heat absorbed by the slag, the heat absorbed by the gas, the heat lost by the furnace body, and the heat absorbed by the scrap steel. The difference between the total released heat and the total absorbed heat is taken as the first remaining heat.
4. The charging control method for a converter according to claim 1, characterized in that, The determination of the type and quality of at least one cold material based on the first residual heat and the preset sulfur content of the finished steel grade includes: Obtain the heat absorbed by the coarse ash in the converter; The difference between the first residual heat and the heat absorbed by the coarse ash is taken as the second residual heat; Based on the second residual heat and the sulfur content of the finished steel grade, the type and quality of the at least one cold material are determined.
5. The converter charging control method according to claim 4, characterized in that, The determination of the type and quality of the at least one cold material based on the second residual heat and the sulfur content of the finished steel grade includes: Based on the second residual heat, the estimated required quality of ore for steelmaking in the converter is determined; Based on the second residual heat, the estimated required mass, and the sulfur content of the finished steel grade, the type and quality of the at least one cold material are determined.
6. The converter charging control method according to claim 5, characterized in that, The determination of the type and quality of the at least one cold material based on the second residual heat, the estimated required mass, and the sulfur content of the finished steel grade includes: Based on the estimated required quality and the sulfur content of the finished steel grade, the type of at least one cold material is determined; Based on the second residual heat, the estimated required mass, the sulfur content of the finished steel grade, and the type of the at least one cold material, the mass of each cold material in the at least one cold material is determined.
7. The charging control method for a converter according to claim 1, characterized in that, Also includes: If the first remaining heat is less than a preset second heat threshold, the mass of the heat-generating agent is determined based on the first remaining heat; wherein the second heat threshold is less than or equal to the first heat threshold. The amount of the heat-adding agent added to the converter is controlled based on the quality of the heat-adding agent.
8. The converter charging control method according to claim 7, characterized in that, Determining the mass of the heat-replenishing agent based on the first remaining heat includes: The difference between the second heat threshold and the first remaining heat is taken as the first value; The mass of the heat-generating agent is obtained by dividing the first value by the quotient of the heat-generating agent per unit mass.
9. A charging control device for a converter, characterized in that, include: The heat acquisition unit is used to acquire the first residual heat of the converter during steelmaking; A cold material determination unit is used to determine the type and quality of at least one cold material based on the first residual heat and the preset sulfur content of the finished steel grade if the first residual heat is greater than a preset first heat threshold. The cold material is used to absorb the residual heat. A control unit is used to control the addition of the cold material to the converter based on the type and quality of the at least one cold material.
10. An electronic device, characterized in that, include: A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor, when executing the computer program, implements the method of any one of claims 1-8.