CN108197785A - A kind of harmful element is on method for building up of the blast furnace fuel than the computational methods of influence - Google Patents
A kind of harmful element is on method for building up of the blast furnace fuel than the computational methods of influence Download PDFInfo
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- CN108197785A CN108197785A CN201711387952.3A CN201711387952A CN108197785A CN 108197785 A CN108197785 A CN 108197785A CN 201711387952 A CN201711387952 A CN 201711387952A CN 108197785 A CN108197785 A CN 108197785A
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- 238000000034 method Methods 0.000 title claims abstract description 31
- 239000000446 fuel Substances 0.000 title claims abstract description 28
- 238000000205 computational method Methods 0.000 title claims abstract description 12
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 67
- 229910052742 iron Inorganic materials 0.000 claims abstract description 29
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 8
- 239000010959 steel Substances 0.000 claims abstract description 8
- 230000008569 process Effects 0.000 claims abstract description 7
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 7
- 239000011701 zinc Substances 0.000 claims abstract description 7
- 239000011133 lead Substances 0.000 claims abstract description 6
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229910052783 alkali metal Inorganic materials 0.000 claims abstract description 4
- 150000001340 alkali metals Chemical class 0.000 claims abstract description 4
- 229910052700 potassium Inorganic materials 0.000 claims abstract description 3
- 229910052708 sodium Inorganic materials 0.000 claims abstract description 3
- 239000000571 coke Substances 0.000 claims description 21
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 20
- 229910052760 oxygen Inorganic materials 0.000 claims description 20
- 239000001301 oxygen Substances 0.000 claims description 20
- 239000007789 gas Substances 0.000 claims description 18
- 229910052799 carbon Inorganic materials 0.000 claims description 12
- 239000000203 mixture Substances 0.000 claims description 12
- 238000004519 manufacturing process Methods 0.000 claims description 10
- 229910000805 Pig iron Inorganic materials 0.000 claims description 7
- 238000003556 assay Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 7
- 229910052698 phosphorus Inorganic materials 0.000 claims description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- 150000001721 carbon Chemical group 0.000 claims description 6
- 230000008859 change Effects 0.000 claims description 6
- 239000004615 ingredient Substances 0.000 claims description 6
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 claims description 5
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 4
- 238000004364 calculation method Methods 0.000 claims description 4
- 239000003245 coal Substances 0.000 claims description 4
- 239000011574 phosphorus Substances 0.000 claims description 4
- 229910052681 coesite Inorganic materials 0.000 claims description 3
- 229910052906 cristobalite Inorganic materials 0.000 claims description 3
- 238000006477 desulfuration reaction Methods 0.000 claims description 3
- 229910052710 silicon Inorganic materials 0.000 claims description 3
- 239000000377 silicon dioxide Substances 0.000 claims description 3
- 229910052682 stishovite Inorganic materials 0.000 claims description 3
- 229910052905 tridymite Inorganic materials 0.000 claims description 3
- 238000003723 Smelting Methods 0.000 claims description 2
- QMQXDJATSGGYDR-UHFFFAOYSA-N methylidyneiron Chemical group [C].[Fe] QMQXDJATSGGYDR-UHFFFAOYSA-N 0.000 claims description 2
- 230000003647 oxidation Effects 0.000 claims description 2
- 238000007254 oxidation reaction Methods 0.000 claims description 2
- 239000000843 powder Substances 0.000 claims description 2
- 239000000126 substance Substances 0.000 claims description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims 1
- 229910052745 lead Inorganic materials 0.000 abstract description 2
- 230000004048 modification Effects 0.000 abstract description 2
- 238000012986 modification Methods 0.000 abstract description 2
- 238000011156 evaluation Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000002817 coal dust Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 241001062472 Stokellia anisodon Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005255 carburizing Methods 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
- 238000011234 economic evaluation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 230000024121 nodulation Effects 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 238000013139 quantization Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 238000007619 statistical method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
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- 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
- G06Q10/0639—Performance analysis of employees; Performance analysis of enterprise or organisation operations
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B5/00—Making pig-iron in the blast furnace
-
- 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—Information and communication technology [ICT] specially adapted for implementation of business processes of specific business sectors, e.g. utilities or tourism
- G06Q50/04—Manufacturing
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- 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
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- Business, Economics & Management (AREA)
- Human Resources & Organizations (AREA)
- Strategic Management (AREA)
- Economics (AREA)
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- Quality & Reliability (AREA)
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- Manufacture Of Iron (AREA)
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Abstract
The invention discloses a kind of harmful element on method for building up of the blast furnace fuel than the computational methods of influence, belong to ironmaking new technical field, the economic utilization for solving the problems, such as high harmful element content iron ore.Circulation collection behavior of this method based on harmful element alkali metal, zinc, lead etc. in blast furnace, it is proposed that harmful element is on concept of the blast furnace fuel than influence.Determine blast furnace process common 4 kinds of harmful elements Na, K, Zn, Pb to blast furnace fuel than affecting laws, establish harmful element on blast furnace fuel than influence computational methods.Due to the adoption of the above technical scheme, this method can accurately calculate harmful element to blast furnace fuel than influence degree, to iron and steel enterprise assessment " economic furnace charge " value have important directive significance.Simultaneously for the modification of corresponding index, also available for other harmful elements on calculating of the blast furnace fuel than influence.
Description
Technical field
The invention belongs to smelt iron new technical field, it is related to harmful element to computational methods of the blast furnace fuel than influence, especially
It is a kind of harmful element on method for building up of the blast furnace fuel than the computational methods of influence.
Background of invention
Since production capacity is excessive, entire steel industry, which faces production capacity, to be protected in the environment of existence for China in Recent Years iron and steel enterprise,
Each iron and steel enterprise is reduces production cost one after another using " economic furnace charge ", a large amount of poor qualities higher using harmful element content
Ore deposit causes blast furnace feeding harmful element load constantly to increase.
Forefathers have done a large amount of and have studied about influence of the harmful element to blast fumance, and work is concentrated mainly on to harmful
The cycle behavior of element furnace entering volume and discharge rate apparent harmful element for statistical analysis in blast furnace, alkali metal, zinc etc. are harmful
Element is to the affecting laws and mechanism study of the crude fuels metallurgical performance such as sinter, pellet and coke, and harmful element is to blast furnace
The work of the research of erosion mechanism and furnace nodulation reason with refractory material etc., these work are to preventing harmful element from endangering
Evil, instruct blast furnace normally produce play the role of it is very important.But in relation to harmful element to blast furnace fuel than influence, energy profit
Influence research is less, in order to show harmful element to blast furnace fuel than affecting laws, which proposes one kind and is based on
The computational methods of actual environment in harmful element physicochemical properties and blast furnace.This method can accurately calculate harmful element
To blast furnace fuel than influence degree, to iron and steel enterprise assessment " economic furnace charge " value have important directive significance.
Invention content
To solve the above-mentioned problems, it is an object of the invention to establish a kind of evaluation harmful element of science to blast furnace fuel
Than the method for influence, the application for blast furnace " economic furnace charge " provides the harmful element of guidance to calculating side of the blast furnace fuel than influence
The method for building up of method.
The technical scheme is that：A kind of harmful element on method for building up of the blast furnace fuel than the computational methods of influence,
Circulation collection behavior of this method based on harmful element alkali metal, zinc, lead in blast furnace, it is proposed that harmful element is to blast furnace fuel
Than the concept of influence, by determine blast furnace process common 4 kinds of harmful elements Na, K, Zn, Pb to blast furnace fuel than influence advise
Rule establishes harmful element to blast furnace fuel than influencing computational methods.
Further, this method specifically includes following steps：
(1) the primary evaluation index of influence of the harmful element to blast furnace energy consumption is blast fumance coke ratio K values, and wherein coke ratio is managed
It needs that parameter is calculated as below by calculating：Enter Fe in stove iron-bearing material2O3Content w (Fe2O3), FeO contents w (FeO), iron ore
Grade w (TFe)；Produce the hot metal composition w of steel enterprise[Si]、w[Mn]、w[P]、w(S)；Air blast parameter in blast furnace normal productive process
Air quantity V, oxygen enrichment percentageTop gas ingredient
(2) coke for entering stove in blast furnace is oxidized to CO, CO2When capture there are three types of the sources of oxygen, be respectively in furnace charge with
It is that iron combines, in furnace charge with the combinations such as oligo-element Si, Mn, P, S and in air blast, accounting equation difference is as follows：
Wherein, yARepresent that production 1mol iron captures the molal quantity of oxygen, y from ferriferous oxidefRepresent production 1mol iron from
SiO2、MnO、P2O5And the molal quantity of oxygen, y are captured in desulfurizationbC aoxidizes the molal quantity for capturing oxygen before representing production 1mol iron winds mouths,
W [Fe] represents the content of iron in the pig iron, and V is the air blast parameter air quantity in blast furnace normal productive process.
Oxygen to carbon atom ratio can be calculated directly according to gas composition in coal gas：
(3) rectangular coordinate system is taken, ordinate isAbscissa isLi Site operation lines can be drawn, according to inner
This special operation lines, can calculate carbon iron atom ratio：
(4) tan α are that the slope of operation lines is convertible into the amount of coke that the smelting pig iron per ton is consumed, should when calculating coke ratio
The carbon amounts of molten iron carburizing consumption is added in, deducts the carbon amounts that coal powder injection is brought into, the two conversion formula is as follows.
Wherein, K represents coke ratio, and M represents coal ratio, w (C)KRepresent coke phosphorus content, w (C)MRepresent coal dust phosphorus content, w [C]
Represent the content of pig iron kind carbon.
(5) harmful element can reduce gas utilization rate, change oxygen to carbon atom ratio, and calculation formula is as follows.
Wherein, XiRepresent that harmful element enters stove load, YiRepresent harmful element circulation collection multiple, MiRepresent average molecular
Quality, V (CO2) it is CO in stock gas2Volume, V (CO) be stock gas in CO volume.
(6) oxygen to carbon atom ratio change makes operation line slope change, coke ratio raising, and coke ratio incremental computations formula is as follows.
Wherein, niRepresent constant, it is related with blast furnace crude fuel condition and operation.
The beneficial effects of the invention are as follows：The present invention can be used for the ferrous material economy that harmful element content is higher in blast furnace
Evaluation utilizes the reference frame for providing quantization for blast furnace " economic furnace charge ".This method is using practical blast fumance data and is harmful to
Reaction theory of the element in blast furnace on the basis of other parameter and assay means is not introduced to harmful element furnace charge into
Row Economic Evaluation and method evaluation is accurate, it may be verified that property is good, has to blast furnace crude fuel procurement staff buying important
Directive significance is laid a good foundation to reduce ironmaking cost.
Description of the drawings
Fig. 1 is Li Site operating curve schematic diagrames.
Fig. 2 is the Li Site operating curve schematic diagrames by harmful element influences.
Specific embodiment
Below in conjunction with specific implementation example specific embodiment again to the above of the present invention further specifically
It is bright：
For a kind of harmful element of the present invention on computational methods of the blast furnace fuel than influence, this method specifically includes following steps：
Assay is carried out to the ferrous material of blast furnace feeding first, determines the chemical composition of ferrous material：Enter stove iron content
Fe in raw material2O3Content w (Fe2O3), FeO contents w (FeO), the grade w (TFe) of iron ore；Produce the hot metal composition of steel enterprise
w[Si]、w[Mn]、w[P]、w(S)；Air blast parameter air quantity V, oxygen enrichment percentage in blast furnace normal productive processTop gas into
Point
Secondly, it is calculated under the conditions of current blast fumance using using equation below, in blast furnaceAtomic ratio：
In formula, yACapture the molal quantity of oxygen, y from ferriferous oxide for production 1mol ironfTo produce 1mol iron from SiO2、
MnO、P2O5And the molal quantity of oxygen, y are captured in desulfurizationbCapture the molal quantity of oxygen for C oxidations before production 1mol iron winds mouths, w [Fe] is
The content of iron in the pig iron, V be blast furnace normal productive process in air blast parameter air quantity, y[Si]For the molal quantity of elements Si, y[Mn]For
The molal quantity of element M n, Sy[P]For the molal quantity of element P, y[S]Molal quantity for element S.
Further, assay is carried out to top gas, determines top gas ingredient (the assay stage
Preferably using the method averaged repeatedly is chemically examined, ensure the accuracy of assay result), and calculate blast furnace using equation below
It is interiorAtomic ratio.
According to blast furnace Li Site operation lines calculating principles, Li Site operation lines are drawn, are illustrated in fig. 1 shown below；
According to Li Site operating curves, Li Site operation line slope tan α are calculated:
According to the relationship of Li Site slopes and blast furnace coke ratio, blast furnace coke ratio K values are converted by equation below：Wherein coke
Carbon content is 85.63%, and coal dust carbon content is 77.48%.
Further, influence of the harmful element to oxygen to carbon atom ratio, is calculated by following formula.
Li Site operating curves by harmful element influences are as shown in Figure 2.
Further, coke ratio increment is calculated by equation below.
Table 1 is the content of iron in iron ore：
1 components of iron ore of table
Table 2 is blast furnace operating parameter：
2 blast furnace operating parameter of table
Table 3 is hot metal composition (1505 DEG C)：
3 hot metal composition of table
Table 4 is slag composition：
4 slag composition of table
Table 5 is gas composition：
5 gas composition of table
Table 6 enters stove load and circulation collection multiple for harmful element：
6 harmful element of table enters stove load and circulation collection multiple
Table 7 is the result of calculation according to the above method：
7 result of calculation of table
The foregoing is merely the preferred embodiments of the present invention, are not intended to limit the invention, all theories and original in the present invention
Within then, any modification, equivalent substitution and improvements done should be included within the scope of the present invention.
Claims (2)
1. a kind of harmful element is on method for building up of the blast furnace fuel than the computational methods of influence, it is characterised in that：
Circulation collection behavior of this method based on harmful element alkali metal, zinc, lead in blast furnace, it is proposed that harmful element is to blast furnace
The concept that fuel ratio influences, by determine common 4 kinds of harmful elements Na, K, Zn, the Pb of blast furnace process to blast furnace fuel than shadow
Rule is rung, establishes harmful element to blast furnace fuel than influencing computational methods.
2. method for building up according to claim 1, which is characterized in that this method specifically includes following steps：
(1) assay is carried out to the ferrous material of blast furnace feeding, determines the chemical composition of ferrous material：Enter in stove iron-bearing material
Fe2O3Content w (Fe2O3), FeO contents w (FeO), the grade w (TFe) of iron ore；Produce the hot metal composition w of steel enterprise[Si]、
w[Mn]、w[P]、w(S)；Air blast parameter air quantity V, oxygen enrichment percentage in blast furnace normal productive processTop gas ingredient
It is calculated under the conditions of current blast fumance using equation below, in blast furnaceAtomic ratio：
In formula, yACapture the molal quantity of oxygen, y from ferriferous oxide for production 1mol ironfTo produce 1mol iron from SiO2、MnO、P2O5
And the molal quantity of oxygen, y are captured in desulfurizationbCapture the molal quantity of oxygen for C oxidations before production 1mol iron winds mouths, w [Fe] is in the pig iron
The content of iron, V be blast furnace normal productive process in air blast parameter air quantity, y[Si]For the molal quantity of elements Si, y[Mn]For element M n
Molal quantity, Sy[P]For the molal quantity of element P, y[S]For the molal quantity of element S, m (O) is the content of oxygen, and m (Fe) is containing for iron
Amount；
(2) assay is carried out to top gas, determines top gas ingredient, and blast furnace is calculated using equation below
It is interiorAtomic ratio：
In formula：For CO in top gas ingredient2Content,Contain for CO in top gas ingredient
Amount, the content that m (C) is iron；
(3) rectangular coordinate system is taken, ordinate isAbscissa isLi Site operation lines can be drawn, according to Li Site
Operation lines can calculate carbon iron atom and compare K：
In formula, tan α are that the slope of operation lines is convertible into the amount of coke that the smelting pig iron per ton is consumed,
K represents coke ratio, and M represents coal ratio, w (C)KRepresent coke phosphorus content, w (C)MIt represents in coal formula,
Powder phosphorus content, w [C] represent the content of pig iron kind carbon；
(4) harmful element can reduce gas utilization rate XB, change oxygen to carbon atom ratio, calculation formula is as follows：
In formula：XiRepresent that harmful element enters stove load, YiRepresent harmful element circulation collection multiple, MiRepresent relative molecular mass,
V(CO2) it is CO in stock gas2Volume, V (CO) be stock gas in CO volume；
(5) oxygen to carbon atom ratio change makes operation line slope change, coke ratio raising, and coke ratio increasing is obtained according to formula is calculated as below
Measure C：
In formula：K2For the coke ratio influenced by harmful element, K1It is not affected by the coke ratio of harmful element influence, XiRepresent harmful element
Enter stove load, YiRepresent harmful element circulation collection multiple, MiRepresent relative molecular mass, niConstant is represented, with blast furnace crude fuel
Condition is related with operation.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110136781A (en) * | 2019-04-23 | 2019-08-16 | 武汉科技大学 | The calculation method of alkali metal element enriching quantity in a kind of blast furnace |
| CN113343416A (en) * | 2021-04-27 | 2021-09-03 | 武汉科技大学 | Method for establishing influence and regulation and control standard of harmful elements on blast furnace smelting |
| CN113667781A (en) * | 2021-07-29 | 2021-11-19 | 北京首钢股份有限公司 | Method for reducing fuel ratio of blast furnace |
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| JPS5483604A (en) * | 1977-12-16 | 1979-07-03 | Nippon Steel Corp | Manganese-containing flux used in manufacture of sintered ore |
| CN101709341A (en) * | 2009-11-27 | 2010-05-19 | 北京科技大学 | Method for treating iron-containing waste materials in iron and steel plant |
| CN103468843A (en) * | 2013-09-19 | 2013-12-25 | 武钢集团昆明钢铁股份有限公司 | Method for producing qualified pig iron from low-grade high-harmful-element lean ores |
| CN106435072A (en) * | 2016-11-04 | 2017-02-22 | 山西太钢不锈钢股份有限公司 | Method for adjusting fuel rate during furnace condition resumption process according to gas utilization rate |
-
2017
- 2017-12-20 CN CN201711387952.3A patent/CN108197785B/en active Active
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| JPS5483604A (en) * | 1977-12-16 | 1979-07-03 | Nippon Steel Corp | Manganese-containing flux used in manufacture of sintered ore |
| CN101709341A (en) * | 2009-11-27 | 2010-05-19 | 北京科技大学 | Method for treating iron-containing waste materials in iron and steel plant |
| CN103468843A (en) * | 2013-09-19 | 2013-12-25 | 武钢集团昆明钢铁股份有限公司 | Method for producing qualified pig iron from low-grade high-harmful-element lean ores |
| CN106435072A (en) * | 2016-11-04 | 2017-02-22 | 山西太钢不锈钢股份有限公司 | Method for adjusting fuel rate during furnace condition resumption process according to gas utilization rate |
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| Title |
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| MICHIEL FREISLICH: "BLAST FURNACE VALUE IN USE MODEL AND ITS APPUCATION FOR IRON ORE PROCESSING", 《INTERNATIONAL CONGRESS ON THE SCIENCE AND TECHNOLOGY OF IRONMAKING》 * |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110136781A (en) * | 2019-04-23 | 2019-08-16 | 武汉科技大学 | The calculation method of alkali metal element enriching quantity in a kind of blast furnace |
| CN110136781B (en) * | 2019-04-23 | 2020-12-18 | 武汉科技大学 | Method for calculating enrichment amount of alkali metal elements in blast furnace |
| CN113343416A (en) * | 2021-04-27 | 2021-09-03 | 武汉科技大学 | Method for establishing influence and regulation and control standard of harmful elements on blast furnace smelting |
| CN113343416B (en) * | 2021-04-27 | 2022-06-03 | 武汉科技大学 | Method for establishing influence and regulation and control standard of harmful elements on blast furnace smelting |
| CN113667781A (en) * | 2021-07-29 | 2021-11-19 | 北京首钢股份有限公司 | Method for reducing fuel ratio of blast furnace |
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