CN110276531A - Material flow analysis method and system, storage medium, and terminal in iron and steel industry - Google Patents

Abstract

The invention provides a material flow analysis method and system, a storage medium and a terminal in the iron and steel industry, comprising the following steps: obtaining material flow parameters and energy flow parameters under various processes in the iron and steel industry; the processes include sintering, pelletizing, ironmaking and steelmaking; obtaining the quantitative relationship between the material flow and the energy flow based on the material flow parameter and the energy flow parameter; and obtaining the material flow characteristic based on the material flow parameter. The material flow analysis method and system, the storage medium and the terminal in the iron and steel industry of the present invention can realize the quantitative relationship analysis between the material flow and energy flow in the iron and steel industry, thereby providing an important basis for establishing refined production management and pollution prevention and control.

Description

Material flow analysis method and system, storage medium, and terminal in iron and steel industry

technical field

The invention relates to the technical field of data analysis, in particular to a material flow analysis method and system in the iron and steel industry, a storage medium and a terminal.

Background technique

The iron and steel industry is the pillar industry of my country's economic development. The output of crude steel increased from 101 million tons in 1996 to 808 million tons in 2016. In 2015, my country's steel exports accounted for about 10% of my country's total steel production, ranking first in the world's steel exports. It can be seen that the proportion of my country's iron and steel share in the world's total iron and steel share is constantly increasing.

The processes of long-process iron and steel enterprises mainly include sintering/pelletizing, ironmaking, and steelmaking. The main equipment of the sintering process is a sintering machine, and the product is a sintered block; the main equipment of the pelletizing process is a pelletizing machine, and the product is a pellet. Agglomerates and pellets are used as the main raw materials for ironmaking. At present, the type of ironmaking equipment with relatively high production capacity in China is the blast furnace, and the product of blast furnace ironmaking is pig iron, which is further converted into crude steel through converter steelmaking. The output of pig iron and crude steel is the main indicator to measure the scale of iron and steel enterprises.

The material flow and energy flow of iron and steel enterprises complement each other, directly affect the direct production capacity and economy of iron and steel enterprises, and can also reflect the ability of raw and auxiliary materials to be converted into products, material damage and pollutant generation. However, in the prior art, there are few quantitative relationships in the direct material flow of iron and steel enterprises, which cannot provide an important basis for the establishment of refined production management and pollution prevention and control.

Contents of the invention

In view of the shortcomings of the prior art described above, the purpose of the present invention is to provide a material flow analysis method and system, a storage medium and a terminal in the iron and steel industry, which can realize the quantitative relationship analysis between material flow and energy flow in the iron and steel industry, so as to establish a fine It provides an important basis for modernized production management and pollution prevention and control.

In order to achieve the above purpose and other related purposes, the present invention provides a material flow analysis method in the iron and steel industry, comprising the following steps: obtaining material flow parameters and energy flow parameters under various processes in the iron and steel industry; the processes include sintering, pelletizing, refining Iron and steelmaking; obtaining the quantitative relationship between material flow and energy flow based on the material flow parameter and the energy flow parameter; obtaining material flow characteristics based on the material flow parameter.

In an embodiment of the present invention, the material flow parameters under the sintering process include the usage of iron ore powder, bentonite, lime, dust removal ash, dust removal sludge, iron oxide scale, sintering Mine production, dedusting ash production, sintering sludge production, waste water production and waste heat production; the energy flow parameters include coke oven gas consumption, blast furnace gas consumption, natural gas consumption, electricity consumption, coke powder usage, water usage and compressed air usage.

In an embodiment of the present invention, the material flow parameters in the pelletizing process include iron ore usage, bentonite usage, solvent usage, lime usage, scrap iron usage, olivine usage, dolomite usage Usage amount, quartzite usage amount, pellet production amount, dedusting ash generation amount, sludge generation amount, waste water generation amount and waste heat generation amount; the energy flow parameters include blast furnace gas usage amount, converter gas usage amount, natural gas usage amount , electricity usage, coke usage, oil usage, coal usage, water usage and compressed air usage.

In an embodiment of the present invention, the material flow parameters in the blast furnace ironmaking process include the usage of sinter, lump ore, pellets, coke, scrap, limestone, and heavy oil , coal consumption, coke oven gas consumption, natural gas consumption, oxygen consumption, hydrocarbon consumption, blast furnace gas production, molten iron production, electricity production, blast furnace slag production, gravity dust collection ash production, dry The amount of ash generated by dedusting method, foundry ash, refractory material, waste water, waste heat, and dedusted ash; the energy flow parameters include blast furnace gas usage, coke oven gas usage, and natural gas usage , converter gas usage, process steam usage, electricity usage, oxygen usage, nitrogen usage, compressed air usage and fresh water usage.

In an embodiment of the present invention, the material flow parameters in the converter steelmaking process include pig iron usage, scrap steel usage, crude metal charge usage, ethylene usage, steam usage, molten iron usage, coke usage, lime Usage amount, dolomite usage amount, alloy stone usage amount, sludge ball usage amount, casting slab production, steel ingot production, steel billet production, ingot production, casting production, converter gas production, desulfurization slag production, converter slag production, secondary metallurgical slag production, dust production, loose particle production, continuous casting scale production, steel rolling scale production and crushed stone production; the energy flow parameters include blast furnace gas Usage, Coke Oven Gas Usage, Natural Gas Usage, Converter Gas Usage, Process Steam Usage, Electricity Usage, Oxygen Usage, Nitrogen Usage, Compressed Air Usage and Fresh Water Usage.

In an embodiment of the present invention, the material flow parameters in the electric arc furnace steelmaking process include pig iron usage, hot liquid metal usage, direct reduced iron usage, limestone/dolomite usage, coal usage, graphite electrode usage amount, refractory lining usage, alloy usage, liquid steel production, slag production, ladle slag production and waste refractory production; the energy flow parameters include oxygen consumption, coal consumption, electricity consumption, natural gas usage, fuel oil usage and water usage.

In an embodiment of the present invention, the material flow characteristics include sintering input-output ratio, sintering raw and auxiliary material ratio, ironmaking input-output ratio, ironmaking raw and auxiliary material ratio, steelmaking input-output ratio and steelmaking raw and auxiliary material ratio ;

The sintering input-output ratio ST=(1.13±0.26)*Or, wherein, ST is the annual production of sintered ore, and Or is the annual input of iron ore powder;

The ratio of raw and auxiliary materials for sintering Or:Ck:Co=50:2:1, where Ck is the annual input of coke, and Co is the annual input of coal;

The ironmaking input-output ratio IR=(0.75±0.23)*ST, wherein, IR is the annual production of pig iron, and ST is the annual production of sinter;

The ratio of raw and auxiliary materials for ironmaking ST: Lo = 5.7: 1, where Lo is the annual input of lump ore;

The steelmaking input-output ratio CS=(1.06±0.12)*IR, wherein CS is the annual output of crude steel;

The ratio of raw and auxiliary materials for steelmaking IR:(SS+Aly)=6.5:1, wherein SS is the annual input amount of steel scrap, and Aly is the annual input amount of alloy.

Correspondingly, the present invention provides a material flow analysis system in the iron and steel industry, including an acquisition module, a quantitative module and an analysis module;

The acquisition module is used to acquire material flow parameters and energy flow parameters under various processes in the iron and steel industry; the processes include sintering, pelletizing, ironmaking and steelmaking;

The quantitative module is used to obtain the quantitative relationship between the material flow and the energy flow based on the material flow parameter and the energy flow parameter;

The analysis module is used to obtain a material flow characteristic based on the material flow parameter.

The present invention provides a storage medium on which a computer program is stored, and when the program is executed by a processor, the above material flow analysis in the iron and steel industry is realized.

Finally, the present invention provides a terminal, including: a processor and a memory;

The memory is used to store computer programs;

The processor is used to execute the computer program stored in the memory, so that the terminal performs the above-mentioned material flow analysis in the iron and steel industry.

As mentioned above, the iron and steel industry material flow analysis method and system, storage medium and terminal according to the present invention have the following beneficial effects:

(1) It can realize the quantitative relationship analysis of material flow and energy flow in the iron and steel industry;

(2) It can further refine the relationship between raw and auxiliary materials and product output and quality in the iron and steel industry;

(3) It can provide an important basis for the establishment of refined production management and pollution prevention and control.

Description of drawings

Fig. 1 is shown as the flow chart of the material flow analysis method in iron and steel industry of the present invention in an embodiment;

Fig. 2 shows the flow chart of material flow in an embodiment for the iron and steel industry of the present invention;

Fig. 3 shows the schematic diagram in an embodiment of the sintering process material flow and energy flow questionnaire of the present invention;

Fig. 4 shows the schematic diagram in an embodiment of the pelletizing process material flow and energy flow questionnaire of the present invention;

Fig. 5 shows the schematic diagram in an embodiment of the blast furnace ironmaking process material flow and energy flow questionnaire;

Fig. 6 shows the schematic diagram in an embodiment of the converter steelmaking process material flow and energy flow questionnaire;

Fig. 7 shows the schematic diagram of the electric arc furnace steelmaking process material flow and energy flow questionnaire in an embodiment of the present invention;

Fig. 8 is a schematic structural diagram of an embodiment of the iron and steel industry material flow analysis system of the present invention;

FIG. 9 is a schematic structural diagram of a terminal of the present invention in an embodiment.

Component designation description

81 Get module

82 quantitative module

83 analysis module

91 processors

92 memory

Detailed ways

Embodiments of the present invention are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that, in the case of no conflict, the following embodiments and features in the embodiments can be combined with each other.

It should be noted that the diagrams provided in the following embodiments are only schematically illustrating the basic ideas of the present invention, and only the components related to the present invention are shown in the diagrams rather than the number, shape and shape of the components in actual implementation. Dimensional drawing, the type, quantity and proportion of each component can be changed arbitrarily during actual implementation, and the component layout type may also be more complicated.

The material flow analysis method and system in the iron and steel industry, the storage medium and the terminal of the present invention can realize the quantitative relationship analysis of the material flow and energy flow in the iron and steel industry through data collection and processing, and realize the acquisition of the characteristics of the material flow in the iron and steel industry, so as to establish a refined It provides an important basis for production management and pollution prevention and control, and is extremely practical.

As shown in Figure 1, in one embodiment, the material flow analysis method of the iron and steel industry of the present invention comprises the following steps:

Step S1, obtaining material flow parameters and energy flow parameters of various processes in the iron and steel industry; the processes include sintering, pelletizing, ironmaking and steelmaking.

Specifically, when analyzing the material flow in the iron and steel industry, it is first necessary to obtain a sufficient amount of collected data, so as to facilitate analysis and processing based on the collected data, so as to obtain the required quantitative relationship between material flow and energy flow and material flow characteristics. As shown in Figure 2, the processes in the steel industry include sintering, pelletizing, ironmaking, and steelmaking. The sintered ore produced by the sintering process and the pellets produced by the pelletizing process are provided to the ironmaking process, the ironmaking process produces pig iron, and the steelmaking process produces steel billets from the pig iron. Among them, various auxiliary materials and by-products and energy supply are also included in each process.

In one embodiment of the present invention, as shown in Figure 3, the material flow parameters under the sintering process include the usage of iron ore powder, bentonite, lime, dedusting ash, dedusting sludge, Scale consumption, sintering ore production, dedusting ash production, sintering sludge production, waste water production and waste heat production; the energy flow parameters include coke oven gas consumption, blast furnace gas consumption, natural gas consumption, Electricity usage, coke powder usage, water usage and compressed air usage.

In one embodiment of the present invention, as shown in Figure 4, the material flow parameters under the pelletizing process include iron ore usage, bentonite usage, solvent usage, lime usage, scrap iron usage, olive Stone usage, dolomite usage, quartzite usage, pellet production, dedusting ash production, sludge production, wastewater production and waste heat production; the energy flow parameters include blast furnace gas consumption, converter gas Usage, natural gas usage, electricity usage, coke usage, oil usage, coal usage, water usage and compressed air usage.

In one embodiment of the present invention, as shown in Figure 5, the material flow parameters in the blast furnace ironmaking process include the usage of sinter, lump ore, pellets, coke, scrap, limestone Consumption, Heavy Oil Consumption, Coal Consumption, Coke Oven Gas Consumption, Natural Gas Consumption, Oxygen Consumption, Hydrocarbon Consumption, Blast Furnace Gas Production, Hot Metal Production, Electricity Production, Blast Furnace Slag Production, Gravity Dust removal ash generation, dry dust removal ash generation, foundry ash generation, refractory material generation, waste water generation, waste heat generation and dust removal ash generation; the energy flow parameters include blast furnace gas consumption, coke oven gas Usage, natural gas usage, converter gas usage, process steam usage, electricity usage, oxygen usage, nitrogen usage, compressed air usage and fresh water usage.

In one embodiment of the present invention, as shown in Figure 6, the material flow parameters in the converter steelmaking process include pig iron usage, scrap steel usage, crude metal charge usage, ethylene usage, steam usage, and molten iron usage , coke usage, lime usage, dolomite usage, alloy stone usage, sludge ball usage, casting slab production, steel ingot production, billet production, ingot production, casting production, converter Gas production, desulfurization slag production, converter slag production, secondary metallurgical slag production, dust production, loose particle production, continuous casting scale production, steel rolling scale production and crushed stone production; Energy flow parameters include blast furnace gas usage, coke oven gas usage, natural gas usage, converter gas usage, process steam usage, electricity usage, oxygen usage, nitrogen usage, compressed air usage and fresh water usage .

In one embodiment of the present invention, as shown in Figure 7, the material flow parameters in the electric arc furnace steelmaking process include pig iron usage, hot liquid metal usage, direct reduced iron usage, limestone/dolomite usage, coal Usage, graphite electrode usage, refractory lining usage, alloy usage, liquid steel production, slag production, ladle slag production and waste refractory material production; the energy flow parameters include oxygen consumption, coal consumption , electricity usage, natural gas usage, fuel oil usage and water usage.

Step S2, obtaining the quantitative relationship between the material flow and the energy flow based on the material flow parameter and the energy flow parameter.

Specifically, after the material flow parameter and the energy flow parameter are obtained, a proportional calculation is performed to obtain the quantitative relationship between the material flow and the energy flow, which facilitates precise management in production.

Step S3, acquiring material flow characteristics based on the material flow parameters.

In an embodiment of the present invention, the material flow characteristics include sintering input-output ratio, sintering raw and auxiliary material ratio, ironmaking input-output ratio, ironmaking raw and auxiliary material ratio, steelmaking input-output ratio and steelmaking raw and auxiliary material ratio .

Specifically, the sintering input-output ratio ST=(1.13±0.26)*Or, wherein ST is the annual production of sintered ore, and Or is the annual input of iron ore powder;

The ratio of raw and auxiliary materials for sintering Or:Ck:Co=50:2:1, where Ck is the annual input of coke, and Co is the annual input of coal;

The ironmaking input-output ratio IR=(0.75±0.23)*ST, wherein, IR is the annual production of pig iron, and ST is the annual production of sinter;

The ratio of raw and auxiliary materials for ironmaking ST: Lo = 5.7: 1, where Lo is the annual input of lump ore;

The steelmaking input-output ratio CS=(1.06±0.12)*IR, wherein CS is the annual output of crude steel;

The ratio of raw and auxiliary materials for steelmaking IR:(SS+Aly)=6.5:1, wherein SS is the annual input amount of steel scrap, and Aly is the annual input amount of alloy.

As shown in FIG. 8 , in an embodiment, the steel industry material flow analysis system of the present invention includes an acquisition module 81 , a quantification module 82 and an analysis module 83 .

The acquisition module 81 is used to acquire material flow parameters and energy flow parameters under various processes in the iron and steel industry; the processes include sintering, pelletizing, ironmaking and steelmaking;

The quantitative module 82 is connected to the acquisition module 81, and is used to obtain the quantitative relationship between the material flow and the energy flow based on the material flow parameter and the energy flow parameter;

The analysis module 83 is connected to the acquisition module 81 and is used for acquiring material flow characteristics based on the material flow parameters.

Among them, the structures and principles of the acquisition module 81 , the quantification module 82 and the analysis module 83 correspond one-to-one to the steps in the above-mentioned material flow analysis method in the iron and steel industry, so they will not be repeated here.

It should be noted that it should be understood that the division of each module of the above device is only a division of logical functions, and may be fully or partially integrated into one physical entity or physically separated during actual implementation. Moreover, these modules can be implemented in the form of calling software through processing elements, or can be implemented in the form of hardware, or some modules can be implemented in the form of calling software through processing elements, and some modules can be implemented in the form of hardware. For example, the x module can be a separate processing element, and can also be integrated in a chip of the above-mentioned device. In addition, the x module can also be stored in the memory of the above-mentioned device in the form of program code, and can be invoked by a certain processing element of the above-mentioned device to execute the function of the above-mentioned x module. The implementation of other modules is similar. All or part of these modules can be integrated together, and can also be implemented independently. The processing element mentioned here may be an integrated circuit with signal processing capability. In the implementation process, each step of the above method or each module above can be completed by an integrated logic circuit of hardware in the processor element or an instruction in the form of software. The above modules may be one or more integrated circuits configured to implement the above method, for example: one or more specific integrated circuits (Application Specific Integrated Circuit, referred to as ASIC), one or more microprocessors (Digital Singnal Processor, DSP for short), one or more Field Programmable Gate Arrays (Field Programmable Gate Array, FPGA for short), and the like. When one of the above modules is implemented in the form of a processing element scheduling program code, the processing element may be a general-purpose processor, such as a central processing unit (Central Processing Unit, CPU for short) or other processors that can call program codes. These modules can be integrated together and implemented in the form of a System-on-a-chip (SOC for short).

The computer program is stored on the storage medium of the present invention, and when the program is executed by the processor, the above-mentioned material flow analysis in the iron and steel industry is realized. The storage medium includes: various media capable of storing program codes such as ROM, RAM, magnetic disk, U disk, memory card or optical disk.

As shown in FIG. 9 , in one embodiment, the terminal of the present invention includes: a processor 91 and a memory 92 .

The memory 92 is used to store computer programs.

The memory 92 includes various media capable of storing program codes such as ROM, RAM, magnetic disk, U disk, memory card or optical disk.

The processor 91 is connected with the memory 92, and is used for executing the computer program stored in the memory 92, so that the terminal performs the above-mentioned material flow analysis in the iron and steel industry.

Preferably, the processor 91 can be a general-purpose processor, including a central processing unit (Central Processing Unit, referred to as CPU), a network processor (Network Processor, referred to as NP), etc.; it can also be a digital signal processor (Digital Signal Processor, DSP for short), Application Specific Integrated Circuit (ASIC for short), Field Programmable Gate Array (Field Programmable Gate Array, FPGA for short) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components.

In summary, the material flow analysis method and system, storage medium and terminal of the iron and steel industry of the present invention can realize quantitative relationship analysis between material flow and energy flow in the iron and steel industry; can further refine the relationship between raw and auxiliary materials and product output quality in the iron and steel industry ; It can provide an important basis for the establishment of refined production management and pollution prevention and control. Therefore, the present invention effectively overcomes various shortcomings in the prior art and has high industrial application value.

The above-mentioned embodiments only illustrate the principles and effects of the present invention, but are not intended to limit the present invention. Anyone skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those skilled in the art without departing from the spirit and technical ideas disclosed in the present invention should still be covered by the claims of the present invention.

Claims (10)

1. A material flow analysis method in iron and steel industry, characterized in that, comprising the following steps: Obtain material flow parameters and energy flow parameters under various processes in the iron and steel industry; the processes include sintering, pelletizing, ironmaking and steelmaking; obtaining a quantitative relationship between material flow and energy flow based on the material flow parameter and the energy flow parameter; A material flow characteristic is obtained based on the material flow parameter. 2. The material flow analysis method in the iron and steel industry according to claim 1, wherein the material flow parameters under the sintering process include iron ore powder usage, bentonite usage, lime usage, dedusting ash usage, Dust removal sludge usage, iron oxide scale usage, sintering ore production, dust removal ash production, sintering sludge production, wastewater production and waste heat production; the energy flow parameters include coke oven gas consumption, blast furnace gas consumption natural gas usage, electricity usage, coke powder usage, water usage and compressed air usage. 3. The iron and steel industry material flow analysis method according to claim 1, characterized in that, the material flow parameters under the pelletizing process include iron ore usage, bentonite usage, solvent usage, lime usage, Scrap iron usage, olivine usage, dolomite usage, quartzite usage, pellet production, dedusting ash production, sludge production, wastewater production and waste heat production; the energy flow parameters include blast furnace Gas usage, converter gas usage, natural gas usage, electricity usage, coke usage, oil usage, coal usage, water usage and compressed air usage. 4. The material flow analysis method in the iron and steel industry according to claim 1, characterized in that, the material flow parameters under the blast furnace ironmaking process include sinter usage, lump ore usage, pellet usage, coke usage, The consumption of returned materials, the consumption of limestone, the consumption of heavy oil, the consumption of coal, the consumption of coke oven gas, the consumption of natural gas, the consumption of oxygen, the consumption of hydrocarbon, the production of blast furnace gas, the production of molten iron, the production of electricity, Blast furnace slag production, gravity dedusting ash production, dry dedusting ash production, foundry ash production, refractory material production, waste water production, waste heat production and dedusting ash production; said energy flow parameters include blast furnace gas Usage, Coke Oven Gas Usage, Natural Gas Usage, Converter Gas Usage, Process Steam Usage, Electricity Usage, Oxygen Usage, Nitrogen Usage, Compressed Air Usage and Fresh Water Usage. 5. The material flow analysis method in the iron and steel industry according to claim 1, wherein the material flow parameters in the converter steelmaking process include pig iron usage, scrap steel usage, crude metal charge usage, ethylene usage, steam Usage amount, molten iron usage amount, coke usage amount, lime usage amount, dolomite usage amount, alloy stone usage amount, sludge ball usage amount, casting slab production, steel ingot production, billet production, ingot production , casting production, converter gas production, desulfurization slag production, converter slag production, secondary metallurgical slag production, dust production, loose particle production, continuous casting scale production, steel rolling scale production and crushed Stone production; the energy flow parameters include blast furnace gas usage, coke oven gas usage, natural gas usage, converter gas usage, process steam usage, electricity usage, oxygen usage, nitrogen usage, and compressed air usage volume and new water usage. 6. The iron and steel industry material flow analysis method according to claim 1, characterized in that, the material flow parameters in the electric arc furnace steelmaking process include pig iron usage, hot liquid metal usage, direct reduced iron usage, limestone/ Dolomite usage, coal usage, graphite electrode usage, refractory lining usage, alloy usage, liquid steel production, slag production, ladle slag production and waste refractory production; the energy flow parameters include oxygen usage, coal usage, electricity usage, natural gas usage, fuel oil usage and water usage. 7. The material flow analysis method in the iron and steel industry according to claim 1, wherein the material flow characteristics include sintering input-output ratio, sintering raw and auxiliary material ratio, ironmaking input-output ratio, ironmaking raw and auxiliary material ratio, Steelmaking input-output ratio and ratio of raw and auxiliary materials for steelmaking; The sintering input-output ratio ST=(1.13±0.26)*Or, wherein, ST is the annual production of sintered ore, and Or is the annual input of iron ore powder; The ratio of raw and auxiliary materials for sintering Or:Ck:Co=50:2:1, where Ck is the annual input of coke, and Co is the annual input of coal; The ironmaking input-output ratio IR=(0.75±0.23)*ST, wherein, IR is the annual production of pig iron, and ST is the annual production of sinter; The ratio of raw and auxiliary materials for ironmaking ST: Lo = 5.7: 1, where Lo is the annual input of lump ore; The steelmaking input-output ratio CS=(1.06±0.12)*IR, wherein CS is the annual output of crude steel; The ratio of raw and auxiliary materials for steelmaking IR:(SS+Aly)=6.5:1, wherein SS is the annual input amount of steel scrap, and Aly is the annual input amount of alloy. 8. A material flow analysis system in the iron and steel industry, characterized in that it includes an acquisition module, a quantitative module and an analysis module; The acquisition module is used to acquire material flow parameters and energy flow parameters under various processes in the iron and steel industry; the processes include sintering, pelletizing, ironmaking and steelmaking; The quantitative module is used to obtain the quantitative relationship between the material flow and the energy flow based on the material flow parameter and the energy flow parameter; The analysis module is used to obtain a material flow characteristic based on the material flow parameter. 9. A storage medium, on which a computer program is stored, wherein when the program is executed by a processor, the material flow analysis in the iron and steel industry according to any one of claims 1 to 7 is realized. 10. A terminal, comprising: a processor and a memory; The memory is used to store computer programs; The processor is used to execute the computer program stored in the memory, so that the terminal executes the material flow analysis in the iron and steel industry according to any one of claims 1 to 7.