Furnace burden structure cost adjusting method and device, electronic equipment and storage medium

Abstract

The invention relates to the technical field of blast furnaces, in particular to a furnace charge structure cost adjusting method and device, electronic equipment and a storage medium. According to the technical scheme, the method for adjusting the furnace burden structure cost comprises the following steps: S1, setting a sintered ore alkalinity boundary range; s2, calculating sinter cost variation caused by sinter alkalinity change; s3, under the clinker ratio constraint condition, the proportion of sintered ore, pellet ore and lump ore is adjusted so as to keep the alkalinity of slag constant; s4, based on the sinter cost variation in the step S2 and the furnace charge proportion in the step S3, the total cost of the furnace charge structure is calculated; and S5, constructing a linkage calculation model, inputting a sinter alkalinity change value, and outputting a furnace burden structure total cost change amount. According to the method, the change of sinter cost and blast furnace burden structure cost is rapidly calculated, and a basis is provided for scientifically determining the reasonable alkalinity of sinter.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of blast furnaces, and in particular to a method and device for adjusting the cost of a blast furnace charge, an electronic device, and a storage medium. BACKGROUND

[0002] A blast furnace charge is usually composed of sintered ore, pellet ore, and lump ore. The cost of the blast furnace charge is an important factor affecting the cost of molten iron in the blast furnace. Therefore, under the premise of meeting the quality of the blast furnace charge, every effort is made to reduce the cost of the blast furnace charge. Before adjusting the cost of the blast furnace charge, the following conditions must be met: first, the blast furnace slag basicity must be met. After the sintered ore, pellet ore, and lump ore are charged in different proportions, the slag basicity must be appropriate to ensure that the composition of the molten iron meets the needs of steelmaking, and the hot state performance of the slag must be ensured to create conditions for long-term stable operation of the blast furnace. Second, the blast furnace clinker ratio must be met. According to the principle of blast furnace metallurgy, if the blast furnace clinker ratio is too low, the proportion of lump ore in the charge will increase due to the poor thermal cracking performance of lump ore, which will inevitably lead to a decrease in the permeability of the material column in the blast furnace, affecting the stability of the blast furnace conditions.

[0003] Sintered ore is an important raw material in the ironmaking process. It is made by mixing iron ore powder, fuel, flux, and other materials and then sintering them. Alkalinity adjustment refers to adjusting the content of alkaline components in sintered ore, such as the ratio of CaO and MgO, which is represented by R2.

[0004] The CaO and MgO content of pellet ore and lump ore must be adjusted under the premise of resource determination. If the blast furnace needs to adjust the slag basicity, the slag basicity must be adjusted by adjusting the alkalinity of sintered ore or adjusting the clinker ratio. Therefore, how to determine the reasonable alkalinity of sintered ore is particularly important for the stable production and cost reduction of the blast furnace. Therefore, how to scientifically adjust the alkalinity of sintered ore is of great significance to the reduction of the cost of the blast furnace charge.

[0005] Currently, there is no simple and effective model to quickly calculate the impact of changes in sintered ore alkalinity on the cost of the blast furnace charge, and it is impossible to evaluate the comprehensive impact of changes in sintered ore alkalinity on the cost of the blast furnace charge (such as the coupling effect of flux cost, blended ore consumption, and yield fluctuations) in real time. Artificial accounting is inefficient and difficult to respond to fluctuations in raw material prices in a timely manner. There are differences between the sintering process and the blast furnace process in terms of alkalinity adjustment targets, and there is a lack of data support consensus. SUMMARY

[0006] The present application proposes a method and device for adjusting the cost of a blast furnace charge, an electronic device, and a storage medium, which solves the problem of the lack of an automatic calculation tool that integrates sintered component data, cost parameters, and process constraints in the prior art.

[0007] To solve the above technical problems, the technical solution adopted by the present application is as follows: A method for adjusting the cost of a blast furnace charge, comprising: S1: setting a sinter alkalinity boundary range; S2: calculating a sinter cost variation amount caused by a sinter alkalinity variation; S3: adjusting the proportions of sinter, pellet and lump ore to maintain constant slag alkalinity under the constraint of the clinker ratio; S4: accounting for the total cost of the burden structure based on the sinter cost variation amount of step S2 and the burden proportion of step S3; S5: constructing a linkage calculation model, inputting the sinter alkalinity variation value and outputting the total cost variation amount of the burden structure.

[0008] Further, the sinter alkalinity boundary range in step S1 is 1.9-2.2.

[0009] Further, step S2 specifically includes: Flux variation cost calculation: t1 = flux price × (Rafter - Rbase) × K1, wherein Rafter is the adjusted alkalinity, Rbase is the reference alkalinity, and K1 is the first empirical coefficient; Mixed ore proportioning variation cost calculation: t2 = mixed ore cost × (Rafter - Rbase) × K2, K2 is the second empirical coefficient; Sinter yield variation cost calculation: t3 = (Rafter - Rbase) × K3, K3 is the third empirical coefficient; Sinter total cost variation amount: T1 = t1 + t2 + t3.

[0010] Further, K1, K2 and K3 are obtained through historical production data regression analysis.

[0011] Further, the clinker ratio constraint condition in step S3 is ≥80%.

[0012] Further, the constant value of the slag alkalinity in step S3 is 1.23.

[0013] Further, the total cost calculation formula of the burden structure in step S4 is: Burden cost = sinter proportion × sinter cost + pellet proportion × pellet price + lump ore proportion × lump ore price.

[0014] A burden structure cost adjustment device, comprising: A boundary setting module configured to perform step S1; A cost calculation module configured to perform step S2; A proportion optimization module configured to perform step S3; A cost accounting module configured to perform step S4; a model construction module configured to perform the step S5.

[0015] An electronic device comprising a memory, a processor and a computer program stored on the memory, the processor implementing the steps of the method for adjusting the burden structure cost when executing the program.

[0016] A computer-readable storage medium storing computer instructions, the instructions implementing the steps of the method for adjusting the burden structure cost when executed by a processor.

[0017] The positive effects of the present application are that the present application can quickly calculate the changes in sintering cost and burden structure cost of a blast furnace, and provide a basis for scientifically determining the reasonable alkalinity of sinter.

[0018] A linkage calculation model of sinter alkalinity-cost change factor-burden structure is established, and the original discrete analysis process depending on manual trial calculation is converted into an automatic one-key accounting process.

[0019] The calculation hysteresis problem in the traditional method is completely solved, the efficiency of burden cost evaluation is shortened from hours to minutes, and real-time data support is provided for production decision-making.

[0020] By quantifying the linkage influence of sinter alkalinity adjustment on comprehensive cost (including the coupling effect of flux consumption, mixed ore ratio, and yield fluctuation), a unified technical judgment benchmark is provided for the sintering process and the blast furnace process; departmental differences caused by data blind spots are eliminated, cross-departmental coordination costs are significantly reduced, and production scheme consensus is accelerated.

[0021] Under the premise of ensuring the stability of blast furnace slag alkalinity and the constraint of clinker ratio, the cost optimal solution under different alkalinity schemes is accurately identified, the scientific management mode of "calculating first and then doing" is realized; a quick response tool is provided to respond to fluctuations in raw material prices, helping enterprises to dynamically optimize the burden structure and continuously tap the potential for cost reduction; process experience (such as alkalinity boundary setting and coefficient regression logic) is converted into an iterative optimization algorithm model, providing a reusable intelligent cost control paradigm for the steel industry. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be described below in conjunction with the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application. Embodiment 1

[0023] A method for adjusting the cost of a burden structure, comprising: S1: setting a sinter alkalinity boundary range; S2: calculating the sinter cost variation caused by the sinter basicity variation; S3: adjusting the proportions of sinter, pellet and lump ore to maintain constant slag basicity under the constraint of clinker ratio; S4: calculating the total cost of the burden structure based on the sinter cost variation in step S2 and the burden proportion in step S3; S5: constructing a linkage calculation model, inputting the sinter basicity variation value and outputting the total cost variation of the burden structure.

[0024] The sinter basicity boundary range in step S1 is 1.9-2.2.

[0025] The step S2 specifically includes: Flux variation cost calculation: t1 = flux price × (Rafter - Rbase) × K1, wherein Rafter is the adjusted basicity, Rbase is the reference basicity, and K1 is the first empirical coefficient; Mixed ore proportioning variation cost calculation: t2 = mixed ore cost × (Rafter - Rbase) × K2, K2 is the second empirical coefficient; Sinter yield variation cost calculation: t3 = (Rafter - Rbase) × K3, K3 is the third empirical coefficient; Sinter total cost variation: T1 = t1 + t2 + t3.

[0026] K1, K2 and K3 are obtained through historical production data regression analysis.

[0027] The clinker ratio constraint condition in step S3 is ≥80%.

[0028] The constant value of the slag basicity in step S3 is 1.23.

[0029] The total cost calculation formula of the burden structure in step S4 is: Burden cost = sinter proportion × sinter cost + pellet proportion × pellet price + lump ore proportion × lump ore price. Example 2

[0030] A method for adjusting the cost of the burden structure is as follows: First step: determining the boundary condition of sinter basicity. Since the sinter basicity has a great influence on the sinter strength and yield, the boundary condition of sinter basicity is set to be between 1.9 and 2.2 according to the requirements of the balance of iron and steel in Shaoguan Iron and Steel.

[0031] According to the balance demand of blast furnace iron burning and the strength requirement of sinter, the sinter alkalinity boundary condition is set to 1.9-2.2. For example, in the production system of Shaoguan Iron and Steel, when the alkalinity is lower than 1.9, the sinter strength is insufficient, and when it is higher than 2.2, the yield is significantly reduced.

[0032] Second step: determine the change of sinter alkalinity and the change factor of sinter cost.

[0033] 1. Change cost of flux, t1= flux price x (Rafter-Rbase) x K1, wherein K1 is an empirical coefficient obtained by regression of experience and statistical data; Rafter is the adjusted sinter alkalinity, and Rbase is the reference sinter alkalinity; 2. Change cost of mixed ore proportioning, t2= mixed ore cost x (Rafter-Rbase) x K2, wherein K2 is an empirical coefficient obtained by regression of experience and statistical data; 3. Change cost caused by change of sinter yield, t3= (Rafter-Rbase) x K3, wherein K3 is an empirical coefficient obtained by regression of experience and statistical data; In summary, the change T1 of sinter cost is t1+t2+t3, and the actual cost change obtained by experiment is shown in Table 1 as follows:

[0034] Third step: determine the change of sinter alkalinity, under the premise that the clinker ratio is greater than or equal to 80%, adjust the proportion of sinter, pellet and lump ore to meet the demand of blast furnace slag alkalinity.

[0035] Fourth step: accounting of burden cost 1. Determine the composition of sinter with different alkalinity See Table 2 below for details

[0036] 2. Determine the balance and adjustment of burden structure under different alkalinity conditions.

[0037] See Table 3 below for details

[0038] The premise of calculation is that the slag alkalinity is 1.23 Burden cost = sinter proportion x sinter cost + pellet proportion x pellet price + lump ore proportion x lump ore price.

[0039] In order to reflect the consistency of sinter price with pellet and lump ore price at the same time point, the warehouse entry price is used in this calculation.

[0040] Burden cost accounting Adopt real-time inventory price calculation: Ccharge = ηsinter × (Csinter + T1) + ηball × Pball + ηblock × Pblock; Example (price benchmark unified to 980 yuan / ton):

[0041] Step 5: When calculating the charge cost, Table 1, Table 2 and Table 3 are linked to form a calculation model. When adjusting the sinter basicity, input different sinter basicity to automatically calculate the change of charge cost, providing a scientific basis for determining the reasonable sinter basicity and truly meeting the requirements of "accounting management, calculation first, then operation".

[0042] Model construction and output.

[0043] Data linkage is realized through Excel or Python programming: Input module: receive R value (1.9~2.2) Processing module: automatically calculate T1 and charge ratio Output module: generate charge cost change comparison, as follows: Basicity 1.98, cost change amount +1.7 (yuan / ton) Example 3

[0044] A charge structure cost adjustment device, comprising: A boundary setting module configured to perform the above step S1; A cost calculation module configured to perform the above step S2; A proportion optimization module configured to perform the above step S3; A cost accounting module configured to perform the above step S4; A model construction module configured to perform the above step S5.

[0045] An electronic device comprising a memory, a processor and a computer program stored on the memory, wherein the processor executes the program to implement the steps of the above charge structure cost adjustment method.

[0046] A computer readable storage medium storing computer instructions, wherein the instructions are executed by a processor to implement the steps of the above charge structure cost adjustment method.

[0047] The above-mentioned embodiments are described in more detail and specifically, express the preferred embodiments of the present application, only for illustrating the technical ideas and characteristics of the present application, and the purpose is to enable those skilled in the art to understand the content of the present application and to implement it, but not only limited to the present application, and cannot be limited to the patent scope of the present application only by the present embodiment, that is, any equivalent changes or modifications made in the spirit disclosed by the present application, for researchers or technicians in the art, without departing from the structure of the present application, the internal improvement of the system and the change between the subsystems, etc., are still within the patent scope of the present application.

Claims

1. A method for adjusting the cost of furnace charge structure, characterized in that: include: S1: Set the boundary range of sinter basicity; S2: Calculate the change in sinter cost caused by the change in sinter basicity; S3: Under the clinker ratio constraint, adjust the ratio of sintered ore, pelletized ore and lump ore to maintain constant slag basicity; S4: Calculate the total cost of the charge structure based on the change in the sintered ore cost in step S2 and the charge ratio in step S3; S5: Construct a linkage calculation model, input the change value of sintered ore basicity and output the change in the total cost of the charge structure.

2. The method for adjusting the charge structure cost according to claim 1, characterized in that: The basicity boundary range of the sintered ore in step S1 is 1.9-2.

2.

3. The method for adjusting the charge structure cost according to claim 1, characterized in that: The step S2 specifically includes: Calculation of flux change cost: t1 = flux price × (R after - R base) × K1, where R after is the adjusted alkalinity, R base is the benchmark alkalinity, and K1 is the first empirical coefficient; Calculation of the change in blending ore blending cost: t2 = blending ore cost × (R after - R base) × K2, K2 is the second empirical coefficient; Calculation of cost of sinter output change: t3 = (R after - R base) × K3, K3 is the third empirical coefficient; Change in total sinter cost: T1 = t1 + t2 + t3.

4. The method for adjusting the charge structure cost according to claim 3, characterized in that: K1, K2, and K3 are obtained through regression analysis of historical production data.

5. The method for adjusting the charge structure cost according to claim 1, characterized in that: The clinker ratio constraint in step S3 is ≥80%.

6. The method for adjusting the charge structure cost according to claim 1, characterized in that: The constant value of slag basicity in step S3 is 1.

23.

7. The method for adjusting the charge structure cost according to claim 1, characterized in that: The total cost calculation formula of the charge structure in step S4 is: Charge cost = sinter ratio × sinter cost + pellet ratio × pellet price + lump ratio × lump price.

8. A device for adjusting the cost of furnace charge structure, characterized in that: include: a boundary setting module, configured to perform step S1 of claim 1; a cost calculation module, configured to perform step S2 of claim 1; a ratio optimization module configured to perform step S3 of claim 1; a cost accounting module configured to perform step S4 of claim 1; The model building module is configured to perform step S5 of claim 1.

9. An electronic device comprising a memory, a processor, and a computer program stored in the memory, characterized in that: When the processor executes the program, the steps of the method for adjusting the charge structure cost according to any one of claims 1 to 7 are implemented.

10. A computer-readable storage medium storing computer instructions, characterized in that: When the instructions are executed by a processor, the steps of the method for adjusting the charge structure cost according to any one of claims 1 to 7 are implemented.

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