Method, device and medium for scrap composition determination

Abstract

This application discloses a method, apparatus, and medium for determining the composition of scrap steel. The scrap steel composition includes multiple elements. The method includes: obtaining the weight of scrap steel and molten iron added to a steelmaking furnace; controlling the steelmaking furnace to tap steel after steelmaking is completed, and obtaining the weight of molten steel and slag after tapping; for each element in the scrap steel composition, obtaining a first sum of the first weight of the element in the molten steel and a second weight of the element in the slag, and obtaining a third weight of the element in the molten iron; determining a first difference between the first sum and the third weight; and determining the ratio of the first difference to the scrap steel weight as the mass percentage of the element in the scrap steel composition. This application requires no additional equipment investment, reducing the cost of scrap steel composition determination; furthermore, it improves the representativeness of the scrap steel composition determination results.

Description

Technical Field

[0001] This application belongs to the field of scrap steel management technology, and in particular relates to a method, apparatus and medium for determining the composition of scrap steel. Background Technology

[0002] Scrap steel composition control is fundamental to the production of high-quality steel in electric arc furnaces and converters. Currently, this is mainly achieved through source analysis and composition testing of scrap steel, classifying it according to the content of residual elements to meet the composition requirements of different steel grades. However, current scrap steel composition testing methods require specialized equipment, resulting in high production costs. Summary of the Invention

[0003] The embodiments of this application provide a method for determining the composition of scrap steel, which at least to a certain extent eliminates the need for additional equipment investment, thereby reducing the cost of scrap steel composition determination; in addition, by utilizing the large capacity of the steelmaking furnace, a larger weight of scrap steel can be added to the steelmaking furnace, thereby improving the representativeness of the scrap steel composition determination results.

[0004] Other features and advantages of this application will become apparent from the following detailed description, or may be learned in part from practice of this application.

[0005] The first aspect of this application provides a method for determining the composition of scrap steel, wherein the scrap steel composition includes multiple elements, including: Obtain the weight of scrap steel and molten iron added to the steelmaking furnace; The steelmaking furnace is controlled to tap steel after steelmaking is completed, and the weight of the molten steel and the weight of the slag after tapping are obtained. For each element in the scrap steel composition, a first sum of the first weight of the element in the molten steel weight and the second weight of the element in the slag weight is obtained, and a third weight of the element in the molten iron weight is obtained. A first difference between the first sum and the third weight is determined, and the ratio of the first difference to the scrap steel weight is determined as the mass percentage of the element in the scrap steel composition.

[0006] Optionally, obtaining the first sum of the first weight of the element in the weight of the molten steel and the second weight of the element in the weight of the slag includes: Obtain the first proportion of the elements in the molten steel composition, and determine the first weight based on the product of the first proportion and the weight of the molten steel; Obtain the second proportion of the elements in the slag composition, and determine the second weight based on the product of the second proportion and the weight of the slag; Obtain the first sum of the first weight and the second weight; The process of obtaining the third weight of the element in the weight of the molten iron includes: Obtain the third proportion of the elements in the molten iron composition, and determine the third weight based on the product of the third proportion and the weight of the molten iron.

[0007] Optionally, before determining the ratio of the first difference to the weight of the scrap steel as the mass percentage of the element in the scrap steel composition, the method further includes: Obtain the fourth weight of the element in the weight of the auxiliary material, wherein the weight of the auxiliary material is the weight of at least one auxiliary material added during the blowing process of the steelmaking furnace; Determine the second sum of the third weight and the fourth weight, and take the difference between the first sum and the second sum as the first difference.

[0008] Optionally, obtaining the fourth weight of the element in the weight of the excipients includes: For each excipient, the fourth proportion of the element in the excipient composition is obtained, and the fourth sub-weight is determined by multiplying the fourth proportion by the weight of the excipient. The fourth weight is obtained by combining each of the aforementioned fourth sub-weights.

[0009] Optionally, the third sum of the weight of the scrap steel and the weight of the molten iron is greater than or equal to 100 tons, and the weight of the scrap steel accounts for more than or equal to 10% of the third sum.

[0010] Optionally, the steelmaking furnace is a converter, and before controlling the steelmaking furnace to tap steel after steelmaking is completed, the method further includes: During the converter blowing process, if the carbon content of the converter flue gas is greater than or equal to the preset content and continues for a target duration, auxiliary materials are added to the converter each time according to the target ratio, wherein the target ratio is the ratio of the weight of the auxiliary materials to the expected weight of the molten steel.

[0011] Optionally, the steelmaking furnace is a converter or an electric furnace, and before obtaining the weight of scrap steel and molten iron added to the steelmaking furnace, the method further includes: Before adding scrap steel and molten iron to the converter, the converter is controlled to tap steel at a preset angle, wherein the preset angle is greater than or equal to 100 degrees; or An image of the furnace interior is acquired from the furnace opening. If the image of the furnace interior includes an image of the bottom blow hole, scrap steel and molten iron are added to the electric furnace.

[0012] Optionally, the elements in the scrap steel composition include at least one of silicon, manganese, phosphorus, sulfur, and metal residues.

[0013] A second aspect of this application provides a scrap steel composition measuring device, wherein the scrap steel composition includes multiple elements, including: The first acquisition unit is used to acquire the weight of scrap steel and molten iron added to the steelmaking furnace. The second acquisition unit is used to control the steelmaking furnace to tap steel after steelmaking is completed, and to acquire the weight of molten steel and slag after tapping. The measuring unit is used to obtain, for each element in the scrap steel composition, a first sum of the first weight of the element in the molten steel weight and a second weight of the element in the slag weight, and a third weight of the element in the molten iron weight, determine a first difference between the first sum and the third weight, and measure the ratio of the first difference to the scrap steel weight as the mass percentage of the element in the scrap steel composition.

[0014] A third aspect of this application provides a computer-readable storage medium storing at least one computer program instruction, which is loaded and executed by a processor to perform the operations described in any of the methods described in the first aspect.

[0015] A fourth aspect of this application provides an electronic device including one or more processors and one or more memories, wherein at least one piece of program code is stored in the one or more memories, and the at least one piece of program code is loaded and executed by the one or more processors to perform the operation as described in any of the methods in the first aspect.

[0016] The one or more technical solutions provided in the embodiments of the present invention achieve at least the following technical effects or advantages: The scrap steel composition determination method of this application embodiment includes multiple elements in the scrap steel composition, including: obtaining the weight of scrap steel and molten iron added to the steelmaking furnace; controlling the steelmaking furnace to tap steel after steelmaking is completed, obtaining the weight of molten steel and slag after tapping; for each element in the scrap steel composition, obtaining the first sum of the first weight of the element in the molten steel and the second weight of the element in the slag, and obtaining the third weight of the element in the molten iron, determining the first difference between the first sum and the third weight, and determining the ratio of the first difference to the scrap steel weight as the mass percentage of the element in the scrap steel composition. Therefore, under normal smelting conditions in the steelmaking furnace, this application embodiment achieves the determination of the mass percentage of each element in the scrap steel composition by acquiring production data and based on the principle of element conservation, without the need for additional equipment investment, reducing the cost of scrap steel composition determination; furthermore, utilizing the large capacity of the steelmaking furnace allows for a larger weight of scrap steel added to the furnace, thereby improving the representativeness of the scrap steel composition determination results.

[0017] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0018] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. It is obvious that the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort. In the drawings: Figure 1 A flowchart of the scrap steel composition determination method according to an embodiment of this application is shown; Figure 2 A structural diagram of the scrap steel composition measuring device according to an embodiment of this application is shown; Figure 3 A schematic diagram of the structure of a computer system suitable for implementing the electronic device of the present application is shown. Detailed Implementation

[0019] The technical solutions of the embodiments of this application 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 this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0020] Furthermore, the described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. Numerous specific details are provided in the following description to give a thorough understanding of embodiments of this application. However, those skilled in the art will recognize that the technical solutions of this application can be practiced without one or more of the specific details, or other methods, components, apparatuses, steps, etc., can be employed. In other instances, well-known methods, apparatuses, implementations, or operations are not shown or described in detail to avoid obscuring various aspects of this application.

[0021] The block diagrams shown in the accompanying drawings are merely functional entities and do not necessarily correspond to physically independent entities. That is, these functional entities can be implemented in software, in one or more hardware modules or integrated circuits, or in different models and / or processor devices and / or microcontroller devices.

[0022] The flowcharts shown in the accompanying drawings are merely illustrative and do not necessarily include all content and operations / steps, nor do they necessarily have to be performed in the described order. For example, some operations / steps can be broken down, while others can be combined or partially combined; therefore, the actual execution order may change depending on the specific circumstances.

[0023] It should also be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such uses of these terms can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described.

[0024] With technological advancements, low-carbon steelmaking processes such as electric arc furnace (EAF) using all scrap steel and converters using a high scrap ratio (greater than or equal to 40 wt%) have become important development trends. Compared to the traditional long process of blast furnace-converter steelmaking, EAF using all scrap steel and converters using a high scrap ratio can effectively reduce carbon emissions. However, when smelting high-quality steel using EAF using all scrap steel and converters using a high scrap ratio, the problem of controlling residual elements arises. These residual elements include copper and nickel, and currently, no metallurgical technology has been developed to effectively remove them. Therefore, controlling residual elements in the smelting of high-quality steel using EAF using all scrap steel and converters using a high scrap ratio requires starting with raw material management. Since residual elements mainly originate from scrap steel, scrap steel composition management becomes fundamental to the smelting of high-quality steel using EAFs and converters.

[0025] Currently, scrap steel is mainly classified based on its residual element content through source analysis and composition testing to meet the composition requirements of different steel grades. For example, a composition testing method based on scrap steel melting involves selecting tens of kilograms of scrap steel from the transport vehicle, pool, or yard, melting it in an induction furnace or other melting equipment, sampling it, and then performing composition analysis using direct-reading spectroscopy. However, the capacity of equipment used for melting scrap steel is generally in the range of 10-200 kg, while scrap steel is a bulk material with complex sources, especially externally purchased scrap steel, which has significant fluctuations in composition. Therefore, the composition of scrap steel obtained from small-batch melting is not representative enough, affecting subsequent classification and use. On the other hand, using melting equipment with a capacity of 1 ton or more for scrap steel melting and composition analysis significantly improves the representativeness of the composition compared to small-batch melting. However, although large-capacity smelting equipment can meet the requirements for scrap steel composition testing, the amount of scrap steel required each time is large, and the weight of a single ingot cast after melting reaches the ton level. It is difficult to use it directly for subsequent normal smelting in electric furnaces or converters. It needs to be cut into smaller pieces before it can be used, which increases production costs.

[0026] In view of this, the present application provides a method for determining the composition of scrap steel. Under normal smelting conditions in a steelmaking furnace, this method obtains production data and determines the mass percentage of each element in the scrap steel composition based on the principle of element conservation. No additional equipment investment is required, reducing the cost of scrap steel composition determination. In addition, by utilizing the large capacity of the steelmaking furnace, a larger weight of scrap steel can be added to the furnace, thereby improving the representativeness of the scrap steel composition determination results.

[0027] The method for determining the composition of scrap steel according to embodiments of this application will be described below with reference to the accompanying drawings.

[0028] Figure 1 A flowchart of a scrap steel composition determination method according to an embodiment of this application is shown.

[0029] The first aspect of this application provides a method for determining the composition of scrap steel, wherein the scrap steel composition includes multiple elements, such as silicon, manganese, phosphorus, sulfur and at least one of metal residues, wherein the metal residues may include, but are not limited to, copper, tin, nickel, molybdenum, etc.

[0030] The method for determining the composition of scrap steel includes, but is not limited to: Step S10. Obtain the weight of scrap steel and molten iron added to the steelmaking furnace; For example, the weight of scrap steel can be weighed before it enters the furnace using a heavy-duty rail scale or truck scale, taking into account loading errors caused by its bulk density and shape. The weight of molten iron can be measured using the weighing system of the mixing car or ladle.

[0031] Step S20. Control the steelmaking furnace to tap steel after steelmaking is completed, and obtain the weight of molten steel and slag after tapping. Understandably, when controlling the tapping process in a steelmaking furnace, it's crucial to ensure that all molten steel is poured into the ladle, while the slag is effectively retained in the furnace or poured into the slag pot. The weight of the molten steel is typically obtained through a weighing system at the converter or ladle refining station, and slight weight changes due to temperature drops during transport and settling can also be considered. The weight of the slag can be obtained through a slag pot weighing system or by calculating the difference in weight between the slag pot before and after pouring. Considering that some slag may adhere to the furnace wall or be lost as dust with the flue gas, a reasonable yield rate or empirical coefficient can be set for correction to approximate the actual slag volume as closely as possible.

[0032] Step S30. For each element in the scrap steel composition, obtain the first sum of the first weight of the element in the molten steel weight and the second weight of the element in the slag weight, and obtain the third weight of the element in the molten iron weight. Determine the first difference between the first sum and the third weight, and measure the ratio of the first difference to the scrap steel weight as the mass percentage of the element in the scrap steel composition.

[0033] Understandably, based on the principle of mass conservation, the content of each element in scrap steel can be determined by working backwards. For each element to be measured (such as Si, Mn, P, S, Cu, Sn, etc.), the following calculation process is performed: First, calculate the first weight of the element in the molten steel and the second weight of the element in the slag. Add these two weights to obtain the first total of the element in the output. This total should theoretically be equal to the total input of the element in the furnace charge (scrap steel + molten iron). Second, the third weight of the element in the molten iron can be obtained by performing a rapid composition analysis of the molten iron before it enters the furnace and combining it with its weight. Finally, subtract the contribution from the molten iron (the third weight) from the total output of the element (the first total). The resulting first difference theoretically comes from the scrap steel. Dividing this difference by the weight of the scrap steel allows us to determine the mass percentage of the element in the scrap steel composition. Thus, by balancing the input and output materials, the composition of the scrap steel can be deduced.

[0034] Therefore, this embodiment of the application, by acquiring production data under normal smelting conditions in a steelmaking furnace, determines the mass percentage of each element in the scrap steel composition based on the principle of element conservation, without the need for additional equipment investment, thus reducing the cost of scrap steel composition determination; in addition, by utilizing the large capacity of the steelmaking furnace, a larger weight of scrap steel can be added to the steelmaking furnace, thereby improving the representativeness of the scrap steel composition determination results.

[0035] In some embodiments, obtaining the first sum of the first weight of the element in the weight of the molten steel and the second weight of the element in the weight of the slag includes: Step S301. Obtain the first proportion of the elements in the molten steel composition, and determine the first weight based on the product of the first proportion and the weight of the molten steel; Step S302. Obtain the second proportion of the elements in the slag composition, and determine the second weight based on the product of the second proportion and the weight of the slag; Step S303. Obtain the first sum of the first weight and the second weight; The process of obtaining the third weight of the element in the weight of the molten iron includes: Step S304. Obtain the third proportion of the elements in the molten iron composition, and determine the third weight based on the product of the third proportion and the weight of the molten iron.

[0036] To facilitate understanding, the following explanation uses formulas to illustrate steps S301-S304.

[0037] ; in, Indicates the weight of molten steel. Indicates the weight of slag. Indicates the weight of molten iron. Indicates the weight of scrap steel; This represents the mass percentage of element i in the molten steel. This represents the mass percentage of element i in the slag. This represents the mass percentage of element i in molten iron. This represents the mass percentage of element i in the scrap steel.

[0038] In some embodiments, before determining the ratio of the first difference to the weight of the scrap steel as the mass percentage of the element in the scrap steel composition, the method further includes: Step S01. Obtain the fourth weight of the element in the auxiliary material weight, wherein the auxiliary material weight is the weight of at least one auxiliary material added during the steelmaking furnace blowing process; Understandably, during the blowing process in steelmaking furnaces (such as converters or electric arc furnaces), various auxiliary materials are typically added. These materials may directly or indirectly introduce the target element. Auxiliary materials include: slagging agents (such as lime and dolomite, which may contain small amounts of silicon and sulfur), alloying additives (ferrosilicon and ferromanganese added in the later stages of blowing or during tapping, containing significant amounts of silicon and manganese), and coolants or fluxes (such as ores and sinter, which may contain phosphorus and manganese). Based on the fourth weight of the elements contained in the auxiliary materials, the accuracy of material balance is improved, ensuring the accuracy of subsequent back-calculation of scrap steel composition.

[0039] In some embodiments, obtaining the fourth weight of the element in the weight of the excipient includes: Step S011. For each excipient, obtain the fourth proportion of the element in the excipient composition, and determine the fourth sub-weight based on the product of the fourth proportion and the weight of the excipient. Step S012. Combine each of the aforementioned fourth sub-weights to obtain the fourth weight.

[0040] To facilitate understanding, steps S011-S012 are explained below using formulas.

[0041] ; in, Indicates the fourth weight. This represents the mass percentage of element i in the j-th excipient. This represents the fourth component weight of the j-th auxiliary material.

[0042] Step S02. Determine the second sum of the third weight and the fourth weight, and take the difference between the first sum and the second sum as the first difference.

[0043] Understandably, the input of elements from non-scrap steel sources includes a third weight from molten iron and a fourth weight from all auxiliary materials. Adding these two together represents the contribution of all non-scrap steel sources to the total inventory of that element in the steelmaking furnace under ideal conditions. Then, subtracting the theoretical total input from these non-scrap steel sources (a second sum) from the total element in the output (a first sum) yields a corrected difference corresponding to the total amount of that element brought in by the scrap steel raw materials. This avoids erroneously attributing elements introduced by auxiliary materials to scrap steel due to neglecting auxiliary material components, thus improving the reliability of scrap steel composition determination results.

[0044] Therefore, taking into account the weight of the auxiliary materials, the method for determining the mass percentage of each element in the scrap steel composition is as follows: .

[0045] In some embodiments, the third sum of the weight of the scrap steel and the weight of the molten iron is greater than or equal to 100 tons, and the weight of the scrap steel accounts for more than or equal to 10% of the third sum.

[0046] To make it easier to understand, the following formula illustrates the proportion of scrap steel by weight: ,in, This refers to the weight of the scrap steel. This represents the weight of the molten iron.

[0047] Understandably, a smaller steelmaking furnace capacity will affect the weight of scrap steel added. Insufficient scrap steel weight may affect the representativeness of the scrap steel composition calculation results. Adding at least 10 tons of scrap steel to the steelmaking furnace ensures a more representative scrap steel composition, especially suitable for scrap steel from diverse sources.

[0048] In some embodiments, the steelmaking furnace is a converter, and before controlling the steelmaking furnace to tap steel after steelmaking is completed, the method further includes: During the converter blowing process, if the carbon content of the converter flue gas is greater than or equal to the preset content and continues for a target duration, auxiliary materials are added to the converter each time according to the target ratio, wherein the target ratio is the ratio of the weight of the auxiliary materials to the expected weight of the molten steel.

[0049] The carbon-containing gas can be carbon monoxide (CO) and / or carbon dioxide (CO2). When the steelmaking furnace is a converter, the converter flue gas is monitored during the blowing process, and the addition of auxiliary materials is dynamically controlled based on the changes in the CO content in the flue gas. Changes in the CO and CO2 content in the flue gas can reflect the state of the converter blowing process. If the CO content remains high, it indicates that the carbon-oxygen reaction in the converter molten pool is intense, and the slag foaming is severe, which can easily cause slag overflow and splashing. After slag overflow and splashing occur, the overflowed or sprayed slag and molten metal droplets are difficult to weigh, thus affecting the accuracy of element conservation calculations. When abnormal flue gas composition is detected, the addition of auxiliary materials can disrupt the foaming of the slag, control slag overflow and splashing, and ensure the accuracy of element conservation calculations.

[0050] For example, the content of the carbon-containing gas can be greater than or equal to 50%; the target duration can be greater than or equal to 5 seconds; and the target ratio can be 5 kg / t-15 kg / t.

[0051] In some embodiments, the auxiliary material may be one or a mixture of lime, lightly calcined dolomite, and both. The lime content is not less than 70 wt%. Lime and lightly calcined dolomite are commonly used auxiliary materials in steelmaking processes, a major source of slag, and have functions such as dephosphorization.

[0052] In some embodiments, the steelmaking furnace is a converter or an electric furnace, and before obtaining the weight of scrap steel and molten iron added to the steelmaking furnace, the method further includes: Before adding scrap steel and molten iron to the converter, the converter is controlled to tap steel at a preset angle, wherein the preset angle is greater than or equal to 100 degrees; or An image of the furnace interior is acquired from the furnace opening. If the image of the furnace interior includes an image of the bottom blow hole, scrap steel and molten iron are added to the electric furnace.

[0053] Understandably, the tapping operation requires the complete removal of molten steel and slag to ensure the accuracy of element conservation calculations. The method for determining complete removal is as follows: when the steelmaking furnace is a converter, the tapping angle is ≥100° and no molten steel flows out; when the steelmaking furnace is an electric furnace, the bottom blowhole can be clearly observed from directly above the furnace opening.

[0054] Therefore, under normal smelting conditions in a steelmaking furnace, this embodiment of the application obtains production data and determines the mass percentage of each element in the scrap steel composition based on the principle of element conservation, without requiring additional equipment investment, thus reducing the cost of scrap steel composition determination; the weight of scrap steel added to the steelmaking furnace is not less than 10 tons, so the scrap steel composition calculated in this way has high representativeness, especially applicable to social scrap steel from complex sources; the addition of auxiliary materials is dynamically controlled according to the changes in the flue gas composition of the steelmaking furnace, thereby controlling slag overflow and improving the accuracy of calculation.

[0055] Figure 2 A structural diagram of the scrap steel composition measuring device according to an embodiment of this application is shown.

[0056] A second aspect of this application provides a scrap steel composition measuring device 200, wherein the scrap steel composition includes multiple elements, including: The first acquisition unit 201 is used to acquire the weight of scrap steel and molten iron added to the steelmaking furnace; The second acquisition unit 202 is used to control the steelmaking furnace to tap steel after steelmaking is completed, and to acquire the weight of molten steel and slag after tapping. The measuring unit 203 is used to obtain, for each element in the scrap steel composition, a first sum of the first weight of the element in the molten steel weight and a second weight of the element in the slag weight, and a third weight of the element in the molten iron weight, determine a first difference between the first sum and the third weight, and measure the ratio of the first difference to the scrap steel weight as the mass percentage of the element in the scrap steel composition.

[0057] The scrap steel composition measuring device of this application embodiment acquires the weight of scrap steel and molten iron added to the steelmaking furnace through a first acquisition unit, controls the steelmaking furnace to tap steel after steelmaking is completed through a second acquisition unit, acquires the weight of molten steel and slag after tapping, and acquires the weight of molten steel and slag through a measuring unit for each element in the scrap steel composition, acquires a first sum of the first weight of the element in the molten steel weight and the second weight of the element in the slag weight, and acquires a third weight of the element in the molten iron weight, determines a first difference between the first sum and the third weight, and measures the ratio of the first difference to the scrap steel weight as the mass percentage of the element in the scrap steel composition. Therefore, the scrap steel composition determination device in this embodiment is installed under normal smelting conditions in a steelmaking furnace. By acquiring production data, it determines the mass percentage of each element in the scrap steel composition based on the principle of element conservation, without the need for additional equipment investment, thus reducing the cost of scrap steel composition determination. The weight of scrap steel added to the steelmaking furnace is not less than 10 tons, so the scrap steel composition calculated in this way has high representativeness, especially suitable for social scrap steel from complex sources. The addition of auxiliary materials is dynamically controlled according to the changes in the flue gas composition of the steelmaking furnace, thereby controlling slag overflow and improving the accuracy of the calculation.

[0058] A third aspect of this application provides a computer-readable storage medium storing at least one computer program instruction, which is loaded and executed by a processor to perform the operations as described in any of the methods in the first aspect.

[0059] Computer-readable storage media may be portable compact disc read-only memory (CD-ROM) and include program code, and may run on a terminal device, such as a personal computer. However, the computer-readable storage medium of this application is not limited thereto. In this application, the readable storage medium may be any tangible medium that contains or stores a program that may be used by or in conjunction with an instruction execution system, apparatus, or device.

[0060] A readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples (a non-exhaustive list) of readable storage media include: an electrical connection having one or more wires, a portable disk, a hard disk, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), optical storage device, magnetic storage device, or any suitable combination thereof.

[0061] Program code for performing the operations of this application can be written in any combination of one or more programming languages, including object-oriented programming languages ​​such as Java and C++, and conventional procedural programming languages ​​such as C or similar languages. The program code can execute entirely on the user's computing device, partially on the user's computing device, as a standalone software package, partially on the user's computing device and partially on a remote computing device, or entirely on a remote computing device or server. In cases involving remote computing devices, the remote computing device can be connected to the user's computing device via any type of network, including a local area network (LAN) or a wide area network (WAN), or it can be connected to an external computing device (e.g., via the Internet using an Internet service provider).

[0062] A fourth aspect of this application provides an electronic device including one or more processors and one or more memories, wherein at least one piece of program code is stored in the one or more memories, and the at least one piece of program code is loaded and executed by the one or more processors to perform the operation as described in any of the methods in the first aspect.

[0063] like Figure 3 As shown, the electronic device 400 is manifested in the form of a general-purpose computing device. The components of the electronic device 400 may include, but are not limited to: at least one processing unit 410, at least one storage unit 420, and a bus 430 connecting different system components (including storage unit 420 and processing unit 410).

[0064] The storage unit stores program code, which can be executed by the processing unit 410, causing the processing unit 410 to perform the steps described in the "Embodiment Method" section above according to various exemplary embodiments of this application.

[0065] Storage unit 420 may include readable media in the form of volatile storage units, such as random access memory (RAM) 421 and / or cache 422, and may further include read-only memory (ROM) 423.

[0066] Storage unit 420 may also include a program / utility 424 having a set (at least one) of program modules 425, such program modules 425 including but not limited to: an operating system, one or more application programs, other program modules, and program data, each or some combination of these examples may include an implementation of a network environment.

[0067] Bus 430 can represent one or more of several types of bus structures, including a memory cell bus or memory cell controller, a peripheral bus, a graphics acceleration port, a processing unit, or a local bus using any of the various bus structures.

[0068] Electronic device 400 can also communicate with one or more external devices 500 (e.g., keyboard, pointing device, Bluetooth device, etc.), and with one or more devices that enable a user to interact with electronic device 400, and / or with any device that enables electronic device 400 to communicate with one or more other computing devices (e.g., router, modem, etc.). This communication can be performed through I / O (input / output) interface 450, which can also be connected to display unit 440 to display the communication content. Furthermore, electronic device 400 can also communicate with one or more networks (e.g., local area network (LAN), wide area network (WAN), and / or public network, such as the Internet) through network adapter 460. As shown, network adapter 460 communicates with other modules of electronic device 400 via bus 430. It should be understood that, although not shown in the figures, other hardware and / or software modules can be used in conjunction with electronic device 400, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage systems.

[0069] 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.

[0070] 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 example, 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 couplings, direct couplings, or communication connections may be through some interfaces; indirect couplings or communication connections between units or modules may be electrical or other forms.

[0071] 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; that is, 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.

[0072] 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 this 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 of the various embodiments of this 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.

[0073] The above description is merely an embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A method of scrap composition determination, characterized by, The scrap steel composition includes multiple elements, including: Obtain the weight of scrap steel and molten iron added to the steelmaking furnace; The steelmaking furnace is controlled to tap steel after steelmaking is completed, and the weight of the molten steel and the weight of the slag after tapping are obtained. For each element in the scrap steel composition, a first sum of the first weight of the element in the molten steel weight and the second weight of the element in the slag weight is obtained, and a third weight of the element in the molten iron weight is obtained. A first difference between the first sum and the third weight is determined, and the ratio of the first difference to the scrap steel weight is determined as the mass percentage of the element in the scrap steel composition.

2. The method according to claim 1, characterized in that, The step of obtaining the first sum of the first weight of the element in the weight of the molten steel and the second weight of the element in the weight of the slag includes: Obtain the first proportion of the elements in the molten steel composition, and determine the first weight based on the product of the first proportion and the weight of the molten steel; Obtain the second proportion of the elements in the slag composition, and determine the second weight based on the product of the second proportion and the weight of the slag; Obtain the first sum of the first weight and the second weight; The process of obtaining the third weight of the element in the weight of the molten iron includes: Obtain the third proportion of the elements in the molten iron composition, and determine the third weight based on the product of the third proportion and the weight of the molten iron.

3. The method according to claim 1 or 2, characterized in that, Before determining the ratio of the first difference to the weight of the scrap steel as the mass percentage of the element in the scrap steel composition, the method further includes: Obtain the fourth weight of the element in the weight of the auxiliary material, wherein the weight of the auxiliary material is the weight of at least one auxiliary material added during the blowing process of the steelmaking furnace; Determine the second sum of the third weight and the fourth weight, and take the difference between the first sum and the second sum as the first difference.

4. The method according to claim 3, characterized in that, The process of obtaining the fourth weight of the element in the weight of the excipients includes: For each excipient, the fourth proportion of the element in the excipient composition is obtained, and the fourth sub-weight is determined by multiplying the fourth proportion by the weight of the excipient. The fourth weight is obtained by combining each of the aforementioned fourth sub-weights.

5. The method according to claim 1, characterized in that, The third sum of the weight of the scrap steel and the weight of the molten iron is greater than or equal to 100 tons, and the weight of the scrap steel accounts for more than or equal to 10% of the third sum.

6. The method according to claim 1, characterized in that, The steelmaking furnace is a converter. Before controlling the steelmaking furnace to tap steel after steelmaking is completed, the method further includes: During the converter blowing process, if the carbon content of the converter flue gas is greater than or equal to the preset content and continues for a target duration, auxiliary materials are added to the converter each time according to the target ratio, wherein the target ratio is the ratio of the weight of the auxiliary materials to the expected weight of the molten steel.

7. The method according to claim 1, characterized in that, The steelmaking furnace is a converter or an electric furnace. Before obtaining the weight of the scrap steel and molten iron added to the steelmaking furnace, the method further includes: Before adding scrap steel and molten iron to the converter, the converter is controlled to tap steel at a preset angle, wherein the preset angle is greater than or equal to 100 degrees; or An image of the furnace interior is acquired from the furnace opening. If the image of the furnace interior includes an image of the bottom blow hole, scrap steel and molten iron are added to the electric furnace.

8. The method according to claim 1, characterized in that, The elements in the scrap steel composition include: At least one of silicon, manganese, phosphorus, sulfur, and metal residues.

9. A scrap steel composition determination device, characterized in that, The scrap steel composition includes multiple elements, including: The first acquisition unit is used to acquire the weight of scrap steel and molten iron added to the steelmaking furnace. The second acquisition unit is used to control the steelmaking furnace to tap steel after steelmaking is completed, and to acquire the weight of molten steel and slag after tapping. The measuring unit is used to obtain, for each element in the scrap steel composition, a first sum of the first weight of the element in the molten steel weight and a second weight of the element in the slag weight, and a third weight of the element in the molten iron weight, determine a first difference between the first sum and the third weight, and measure the ratio of the first difference to the scrap steel weight as the mass percentage of the element in the scrap steel composition.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores at least one computer program instruction, which is loaded and executed by a processor to perform the operation as described in any one of claims 1-8.

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