CN112981017A - Pre-iron optimization batching method considering factor change influence - Google Patents

Pre-iron optimization batching method considering factor change influence Download PDF

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Publication number
CN112981017A
CN112981017A CN201911293604.9A CN201911293604A CN112981017A CN 112981017 A CN112981017 A CN 112981017A CN 201911293604 A CN201911293604 A CN 201911293604A CN 112981017 A CN112981017 A CN 112981017A
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Prior art keywords
iron
ore
ironmaking
batching
ingredients
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CN201911293604.9A
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Chinese (zh)
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经文波
经薇
聂洪波
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Baise University
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Baise University
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    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B5/00—Making pig-iron in the blast furnace
    • C21B5/008—Composition or distribution of the charge
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q10/00—Administration; Management
    • G06Q10/04—Forecasting or optimisation specially adapted for administrative or management purposes, e.g. linear programming or "cutting stock problem"
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q10/00—Administration; Management
    • G06Q10/06—Resources, workflows, human or project management; Enterprise or organisation planning; Enterprise or organisation modelling
    • G06Q10/063—Operations research, analysis or management
    • G06Q10/0631—Resource planning, allocation, distributing or scheduling for enterprises or organisations
    • G06Q10/06313—Resource planning in a project environment
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q50/00—Systems or methods specially adapted for specific business sectors, e.g. utilities or tourism
    • G06Q50/04—Manufacturing
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B2300/00—Process aspects
    • C21B2300/04—Modeling of the process, e.g. for control purposes; CII
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
    • Y02P90/30—Computing systems specially adapted for manufacturing

Abstract

The invention discloses a pre-iron optimized batching method considering factor change influence, and belongs to the field of batching of a pre-iron system in ferrous metallurgy. The method solves the problem that the prior ingredients do not consider the influence of the change of the ore grade, the ore enrichment rate and the S-containing factor after the ingredients on the ironmaking fuel ratio and the yield, thereby influencing the pre-iron benefit. According to the invention, on the basis of the original low-cost optimized batching method for sintering and ironmaking, such as the unit price, chemical components, proportioning range and inventory of furnace charge and the like under the original ironmaking constraint condition, the changes of the ore grade, the ore-rich rate and the S-containing factor after batching are added to influence the ironmaking fuel ratio and the output content, and the ironmaking fuel ratio and the output are corrected according to the influences of the changes of the ore grade, the ore-rich rate and the S-containing factor after batching. Under the condition that the total cost is not increased, the optimal benefit before iron is sought to meet the requirement of constraint conditions, and the ingredients are optimized.

Description

Pre-iron optimization batching method considering factor change influence
Technical Field
The invention belongs to the field of batching of a system before iron and steel metallurgy.
Background
The iron and steel metallurgical pre-iron system comprises sintering and iron making, when the batching is optimized, the batching is optimized by considering the chemical components of constraint conditions, the raw material proportioning range and the low-cost raw material inventory, the fuel ratio and the yield of iron making are basically given, but the grade of ore entering a furnace, the rich ore rate and the change of S-containing factors after the batching affect the fuel ratio and the yield; in addition, the optimized ingredients aim to be low-cost ingredients, while the iron aims to be beneficial, and the two parts are not considered when the ingredients are optimized.
The invention discloses CN104593532A 'a method for optimizing furnace burden of an iron-making system', relates to a method for optimizing furnace burden, in particular to a method for optimizing the comprehensive proportion of sinter and blast furnace burden. The method comprises six-in-one iron-making system furnace burden optimization methods of sintered ore metallurgical performance detection and analysis, sintering process burden optimization, sintered ore component prediction and analysis, blast furnace burden structure optimization, blast furnace burden calculation and iron-making system furnace burden structure multi-objective optimization, determines the optimal proportion and the optimal component of various furnace burden additions of sintering burden and blast furnace burden, and solves the problems that the existing iron-making furnace burden optimization method is only limited to a certain procedure of ore proportioning, sintering and iron making, the cost is high, and the quality is unstable. The invention has the advantages of overall iron-making process, scientific analysis and calculation from the whole system height, maximum cost reduction, and finding out the furnace burden optimization scheme of the iron-making system with low pig iron production cost, excellent products and high yield. However, the changes of the ore grade and the rich rate of the fed ore after the batching and the factor containing S influence the ironmaking fuel ratio and the yield, and the effect of the batching before the iron is not considered.
Disclosure of Invention
The invention relates to a pre-iron optimization batching method considering the influence of factor change. The method solves the problem that the prior ingredients do not consider the influence of the change of the ore grade, the ore enrichment rate and the S-containing factor after the ingredients on the ironmaking fuel ratio and the yield, thereby influencing the pre-iron benefit. According to the invention, on the basis of the original low-cost optimized batching method for sintering and ironmaking, such as the unit price, chemical components, proportioning range and inventory of furnace charge and the like under the original ironmaking constraint condition, the changes of the ore grade, the ore-rich rate and the S-containing factor after batching are added to influence the ironmaking fuel ratio and the output content, and the ironmaking fuel ratio and the output are corrected according to the influences of the changes of the ore grade, the ore-rich rate and the S-containing factor after batching. Under the condition that the total cost is not increased, the optimal benefit before iron is sought for optimizing the ingredients.
Detailed Description
The purpose of the invention is realized by the following specific embodiments:
(1) the unit price of the furnace charge, chemical components, proportioning range, inventory, ingredient chemical components and other constraint conditions.
(2) After the ingredients are added, the grade and the rich rate of the ore entering the furnace and the change of the S-containing factor influence the fuel ratio and the yield of the ironmaking, and the fuel ratio and the yield of the ironmaking are corrected.
(3) Under the condition that the total cost is not increased, the optimal benefit before iron is sought for optimizing the ingredients.
Detailed description of the preferred embodiments
Example 1
(1) Constraint conditions
The data and the constraint conditions of the chemical components of the sintering ingredients are shown in Table 1.
TABLE 1 sintering batch chemical composition data and constraints
Figure BDA0002319823180000021
The data and the constraint conditions of the chemical components of the ironmaking ingredients are shown in the table 2.
TABLE 2 data and constraints on chemical composition of iron making ingredients
Figure BDA0002319823180000022
(2) The change of ore grade, rich ore rate and S-containing factor in charging affects the fuel ratio and yield
The feed ore grade, the richness and the S factor variation affecting the fuel ratio and the production are shown in table 3.
TABLE 3 feed ore grade, richness and S factor variation affecting fuel ratio and yield
Figure BDA0002319823180000031
And correcting the fuel ratio and the yield according to the influence of the change of the ore grade, the ore enrichment rate and the S-containing factor after burdening.
(3) Seeking optimum benefit before iron and optimizing ingredient before iron benefit as ironmaking yield x (pig iron price-ironmaking cost)
Under the condition that the total cost is not increased, the optimal benefit before iron is sought to optimize the ingredients, and the ingredients are shown in tables 4, 5, 6, 7 and 8.
TABLE 4 sintering compounding
Figure BDA0002319823180000032
TABLE 5 sintering batch chemical composition data
Figure BDA0002319823180000033
TABLE 6 iron making ingredients
Figure BDA0002319823180000041
TABLE 7 chemical composition of iron-making burden slag
Figure BDA0002319823180000042
TABLE 8 measurement of dosing benefit
Figure BDA0002319823180000043
Wherein: the price of pig iron is 3000 yuan/t
Pre-iron benefit is the yield of ironmaking x (pig iron price-ironmaking cost)
(4) Actual optimization ingredient verification
The proportioning ingredients are selected according to the ingredient calculation, and the ingredient results are shown in tables 9, 10 and 11.
TABLE 9 data for chemical composition of sintering batch
Figure BDA0002319823180000044
Figure BDA0002319823180000051
TABLE 10 chemical composition of iron-making burden slag, etc
Figure BDA0002319823180000052
TABLE 11 benefit of ingredients
Figure BDA0002319823180000053
Wherein: the price of pig iron is 3000 yuan/t
Pre-iron benefit is the yield of ironmaking x (pig iron price-ironmaking cost)
The optimized ingredients after correction are calculated and known to be closer to the actual optimized ingredients, and the benefit is obvious.

Claims (2)

1. The invention relates to a pre-iron optimized batching method considering factor change influence in the field of a pre-iron system of ferrous metallurgy, which is characterized by comprising the following steps of: adding the content of the fuel ratio and the yield of the ironmaking influenced by the ore grade, the ore-rich rate and the S-containing factor change into the ironmaking low-cost optimized ingredient, and correcting the fuel ratio and the yield of the ironmaking according to the influence of the ore grade, the ore-rich rate and the S-containing factor change after the ingredient.
2. The method of claim 1, further comprising the step of: under the condition that the total cost is not increased, the optimal benefit before iron is sought to meet the requirement of constraint conditions, and the ingredients are optimized.
CN201911293604.9A 2019-12-16 2019-12-16 Pre-iron optimization batching method considering factor change influence Pending CN112981017A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
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CN114936686A (en) * 2022-04-15 2022-08-23 北京智冶互联科技有限公司 Optimized ore blending method and device, electronic equipment and readable storage medium

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RU2608008C1 (en) * 2015-12-31 2017-01-11 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Магнитогорский государственный технический университет им. Г.И. Носова" (ФГБОУ ВПО "МГТУ") Procedure for melting steel in oxygen converter
CN105734276A (en) * 2016-05-12 2016-07-06 玉溪大红山矿业有限公司 Comprehensive assessment method and comprehensive assessment system for economical efficiency of iron ores for blast furnace process
CN108664761A (en) * 2018-06-04 2018-10-16 山西建龙实业有限公司 A kind of method of iron ore cost performance Comprehensive Assessment
CN109918702A (en) * 2019-01-03 2019-06-21 上海交通大学 A kind of blast-furnace burden cooperates with Multipurpose Optimal Method with operation

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Application publication date: 20210618