CN112086142A - Selection and calculation method of converter steelmaking and alloy addition - Google Patents
Selection and calculation method of converter steelmaking and alloy addition Download PDFInfo
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- CN112086142A CN112086142A CN202010947138.8A CN202010947138A CN112086142A CN 112086142 A CN112086142 A CN 112086142A CN 202010947138 A CN202010947138 A CN 202010947138A CN 112086142 A CN112086142 A CN 112086142A
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- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 91
- 239000000956 alloy Substances 0.000 title claims abstract description 91
- 238000009628 steelmaking Methods 0.000 title claims abstract description 24
- 238000004364 calculation method Methods 0.000 title claims description 14
- 238000010187 selection method Methods 0.000 title description 2
- 229910000676 Si alloy Inorganic materials 0.000 claims abstract description 54
- PYLLWONICXJARP-UHFFFAOYSA-N manganese silicon Chemical compound [Si].[Mn] PYLLWONICXJARP-UHFFFAOYSA-N 0.000 claims abstract description 54
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 41
- 239000010959 steel Substances 0.000 claims abstract description 41
- 229910052729 chemical element Inorganic materials 0.000 claims abstract description 21
- 238000000034 method Methods 0.000 claims abstract description 21
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 17
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 15
- 239000011572 manganese Substances 0.000 claims abstract description 15
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims abstract description 12
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 11
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 8
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 8
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 8
- 239000010703 silicon Substances 0.000 claims abstract description 8
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229910001325 element alloy Inorganic materials 0.000 claims abstract description 5
- 239000011574 phosphorus Substances 0.000 claims abstract description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 9
- 239000000654 additive Substances 0.000 claims description 8
- 230000000996 additive effect Effects 0.000 claims description 8
- 238000005275 alloying Methods 0.000 claims description 8
- 229910000604 Ferrochrome Inorganic materials 0.000 claims description 6
- 229910052759 nickel Inorganic materials 0.000 claims description 6
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 5
- 229910052737 gold Inorganic materials 0.000 claims description 5
- 239000010931 gold Substances 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910001309 Ferromolybdenum Inorganic materials 0.000 claims description 3
- 229910000592 Ferroniobium Inorganic materials 0.000 claims description 3
- 229910000519 Ferrosilicon Inorganic materials 0.000 claims description 3
- 229910000628 Ferrovanadium Inorganic materials 0.000 claims description 3
- RHZUVFJBSILHOK-UHFFFAOYSA-N anthracen-1-ylmethanolate Chemical compound C1=CC=C2C=C3C(C[O-])=CC=CC3=CC2=C1 RHZUVFJBSILHOK-UHFFFAOYSA-N 0.000 claims description 3
- 239000003830 anthracite Substances 0.000 claims description 3
- 229910052804 chromium Inorganic materials 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- PNXOJQQRXBVKEX-UHFFFAOYSA-N iron vanadium Chemical compound [V].[Fe] PNXOJQQRXBVKEX-UHFFFAOYSA-N 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 229910052750 molybdenum Inorganic materials 0.000 claims description 3
- 229910052758 niobium Inorganic materials 0.000 claims description 3
- 229910052717 sulfur Inorganic materials 0.000 claims description 3
- 229910052720 vanadium Inorganic materials 0.000 claims description 3
- ZFGFKQDDQUAJQP-UHFFFAOYSA-N iron niobium Chemical compound [Fe].[Fe].[Nb] ZFGFKQDDQUAJQP-UHFFFAOYSA-N 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims 2
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 abstract 1
- 229910000914 Mn alloy Inorganic materials 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 2
- OFLYIWITHZJFLS-UHFFFAOYSA-N [Si].[Au] Chemical compound [Si].[Au] OFLYIWITHZJFLS-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
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Classifications
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- G—PHYSICS
- G16—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
- G16C—COMPUTATIONAL CHEMISTRY; CHEMOINFORMATICS; COMPUTATIONAL MATERIALS SCIENCE
- G16C20/00—Chemoinformatics, i.e. ICT specially adapted for the handling of physicochemical or structural data of chemical particles, elements, compounds or mixtures
- G16C20/30—Prediction of properties of chemical compounds, compositions or mixtures
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/28—Manufacture of steel in the converter
-
- G—PHYSICS
- G16—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
- G16C—COMPUTATIONAL CHEMISTRY; CHEMOINFORMATICS; COMPUTATIONAL MATERIALS SCIENCE
- G16C60/00—Computational materials science, i.e. ICT specially adapted for investigating the physical or chemical properties of materials or phenomena associated with their design, synthesis, processing, characterisation or utilisation
Abstract
The invention relates to the field of steelmaking, in particular to a method for selecting and calculating a converter steelmaking matching alloy, which can realize the matching alloy adding in a low-cost priority mode while improving the accuracy of the matching alloy adding, and effectively improves the cost control degree of an enterprise. The scheme is that alloy yield corresponding to steel initial components, target components, molten steel weight and various chemical elements is obtained, pure alloy element adding amount (element target component-element initial components) and molten steel weight/element alloy yield (pure alloy element adding amount) are calculated, the adding amount of pure alloy silicon and manganese is calculated according to a formula, the required manganese-silicon alloy using amount 1 is calculated according to the adding amount of pure alloy silicon, the required manganese-silicon alloy using amount 2 is calculated according to the adding amount of pure alloy manganese, whether carbon, nitrogen and phosphorus meet requirements or not is judged by taking the minimum using amount as a reference, and if the alloy does, the manganese-silicon alloy scheme is selected. The method is suitable for adding alloy based on manganese-silicon alloy converter steelmaking.
Description
Technical Field
The invention relates to the field of steelmaking, in particular to a method for selecting and calculating converter steelmaking and alloy.
Background
Converter steelmaking is the current mainstream steelmaking mode, and the selection and calculation of the added alloy for converter steelmaking at present depend on the manual experience of operators to judge sections, so that the problems of great difference in operation, large calculation error and the like exist.
In the prior art, for example, CN110807258A discloses a converter alloy proportioning and identification method, which comprises the following steps: obtaining a common alloy combination according to a steelmaking process card; determining an alloy calculation method and alloy parameters according to a common alloy combination; designing a model frame according to the common alloy combination and the alloy parameters; implanting an alloy calculation method into a model frame to construct a calculation model; obtaining alloy parameters to be identified; according to the alloy parameters to be identified, carrying out ratio calculation on the alloy to be identified through a calculation model to obtain a ratio calculation value; and determining an alloy combination identification result according to the ratio calculation value. The method solves the technical problems that in the prior art, the alloy proportioning algorithm is low in accuracy, misleading is caused to post personnel due to field condition change, and the quality of molten steel is influenced.
The prior art only improves the accuracy of adding the matched gold, does not consider the cost of adding the matched alloy, and is not beneficial to cost control.
Disclosure of Invention
The invention aims to provide a method for selecting and calculating the additive alloy for converter steelmaking, which can realize the addition of the additive alloy in a low-cost priority mode while improving the accuracy of the additive alloy, and effectively improve the control degree of enterprises on the cost.
The invention adopts the following technical scheme to realize the purpose, and the method for selecting and calculating the converter steelmaking and the coordination alloy comprises the following steps:
the method comprises the following steps of (1) obtaining initial components of a steel grade, target components, molten steel weight and alloy yield corresponding to various chemical elements, wherein the initial components of the steel grade comprise the initial components of various chemical elements, and the target components of the steel grade comprise the target components of various chemical elements;
step (2), calculating the consumption of various pure alloying elements to be added according to the data obtained in the step (1), (the element target component-the element initial component) and the molten steel weight/the element alloy yield (pure alloying element addition);
step (3), obtaining the addition of pure alloy silicon and pure alloy manganese according to the calculation formula in the step (2), then calculating the required manganese-silicon alloy consumption 1 according to the addition of pure alloy silicon, and calculating the required manganese-silicon alloy consumption 2 according to the addition of pure alloy manganese;
step (4), judging the using amount of the manganese-silicon alloy 1 and the using amount of the manganese-silicon alloy 2, if the using amount of the manganese-silicon alloy 1 is less than the using amount of the manganese-silicon alloy 2, selecting to pre-add the using amount of the manganese-silicon alloy 1, and if not, selecting to pre-add the using amount of the manganese-silicon alloy 2;
and (5) judging whether the components of carbon, nitrogen and phosphorus in the molten steel are smaller than the respective corresponding target components after the manganese-silicon alloy dosage in the step (4) is pre-added, if so, selecting the current manganese-silicon alloy dosage scheme, and otherwise, not selecting the current manganese-silicon alloy dosage scheme.
Further, the method for selecting and calculating the steel-making additive alloy based on the manganese alloy converter further comprises the following steps:
step (6), calculating the residual amount of various alloys required to be added by combining the content of various alloys in the current molten steel, the target components of the steel grade, the alloy components and the alloy yield;
step (7) judging whether the components of carbon in the molten steel are smaller than target components or not after the pre-addition of the residual various alloy amounts, if so, adding anthracite to enable the components of the carbon to reach the target components, otherwise, replacing manganese-silicon alloy with metal manganese and ferrosilicon;
and (8) judging whether the components of various pure alloys in the molten steel are larger than target components, if so, giving a warning, and otherwise, recommending a current alloy adding scheme.
Further, the alloy components refer to the component contents of various chemical elements of various auxiliary materials added in the converter smelting process.
Further, in the step (1), the various chemical elements include: C. si, Mn, P, S, Nb, V, Cr, Mo, Cu, Ni, N, Al, B.
Further, in step (7), the remaining amounts of the various alloys to be added include: micro-carbon ferrochrome, medium-carbon ferrochrome, ferroniobium, ferrovanadium, ferromolybdenum, cathode copper and electrolytic nickel.
The method comprises the steps of performing calculation analysis on the basis of manganese-silicon alloy, and firstly obtaining initial components of a steel grade, target components, molten steel weight and alloy yield corresponding to various chemical elements, wherein the initial components of the steel grade comprise the initial components of the various chemical elements, and the target components of the steel grade comprise the target components of the various chemical elements; calculating the consumption of various pure alloying elements to be added according to the obtained data, (element target component-element initial component) molten steel weight/element alloy yield (pure alloying element addition); obtaining the addition amount of pure alloy silicon and pure alloy manganese according to a formula, then calculating the required manganese-silicon alloy consumption 1 according to the addition amount of pure alloy silicon, and calculating the required manganese-silicon alloy consumption 2 according to the addition amount of pure alloy manganese; judging the using amount 1 of the manganese-silicon alloy and the using amount 2 of the manganese-silicon alloy, if the using amount 1 of the manganese-silicon alloy is less than the using amount 2 of the manganese-silicon alloy, selecting to pre-add the using amount 1 of the manganese-silicon alloy, and otherwise, selecting to pre-add the using amount 2 of the manganese-silicon alloy; judging whether the components of carbon, nitrogen and phosphorus in the molten steel are smaller than the respective corresponding target components or not after the manganese-silicon alloy is used, if so, selecting the current manganese-silicon alloy scheme, otherwise, not selecting the current manganese-silicon alloy scheme; calculating various residual alloy amounts required to be added by combining the content of various alloys, target components of various chemical elements, alloy components and alloy yield in the current molten steel; when the manganese-silicon alloy is added and matched, the manganese-silicon alloy which can meet the target component of pure alloy at the minimum is preferentially taken as the adding scheme, so that the accuracy of adding and matching the alloy is improved, the matching alloy can be added in a low-cost preferential mode, and the cost control degree of an enterprise is effectively improved.
Drawings
FIG. 1 is a flow chart of the method of the present invention.
Detailed Description
The invention relates to a method for selecting and calculating the steel-making and gold-adding coordination of a converter, which has a flow chart shown in figure 1 and comprises the following steps:
step 101: obtaining the alloy yield corresponding to the initial components, the target components, the weight of molten steel and various chemical elements of the steel;
step 102: calculating the addition of pure alloying elements (element target component-element initial component) and the weight of molten steel/yield of element alloy (pure alloying element addition);
step 103: calculating the addition amount of pure gold silicon according to a formula;
step 104: calculating the required manganese-silicon alloy dosage 1 according to the addition of the pure gold-silicon;
step 105: calculating the addition of pure alloy manganese according to a formula;
step 106: calculating the required manganese-silicon alloy dosage 2 according to the addition of pure alloy manganese;
step 107: judging the using amount 1 of the manganese-silicon alloy and the using amount 2 of the manganese-silicon alloy, if the using amount 1 of the manganese-silicon alloy is less than the using amount 2 of the manganese-silicon alloy, selecting to pre-add the using amount 1 of the manganese-silicon alloy, and otherwise, selecting to pre-add the using amount 2 of the manganese-silicon alloy;
step 108: and judging whether the components of carbon, nitrogen and phosphorus in the molten steel are smaller than the respective corresponding target components or not after the manganese-silicon alloy is pre-added, if so, selecting the current manganese-silicon alloy dosage scheme, and otherwise, not selecting the current manganese-silicon alloy dosage scheme.
The method for selecting and calculating the steel-making additive alloy based on the manganese alloy converter further comprises the following steps:
step 109, calculating the residual amount of various alloys to be added by combining the content of various alloys in the current molten steel, the target components of the steel grade, the alloy components and the alloy yield;
step 110, judging whether the components of carbon in the molten steel are smaller than target components or not after the pre-adding of the residual various alloy amounts is carried out, if so, adding anthracite to enable the components of carbon to reach the target components, otherwise, replacing manganese-silicon alloy with metal manganese and ferrosilicon;
and 120, judging whether the components of various pure alloys in the molten steel are larger than target components or not, if so, giving a warning, and otherwise, recommending a current alloy adding scheme.
In step 101, the initial components of the steel grades comprise initial components of various chemical elements, the target components of the steel grades comprise target components of various chemical elements, and the alloy yield refers to the ratio of the weight of different chemical elements added in the converter after the converter steelmaking is completed to the actual added weight in the converter steelmaking process.
Wherein the various chemical elements include: C. si, Mn, P, S, Nb, V, Cr, Mo, Cu, Ni, N, Al, B.
In step 109, the alloy component refers to the component contents of various chemical elements of various auxiliary materials added in the converter smelting process.
In step 109, the remaining amounts of the various alloys to be added include: micro-carbon ferrochrome, medium-carbon ferrochrome, ferrocolumbium, ferrovanadium, ferromolybdenum, cathode copper, electrolytic nickel and the like.
In conclusion, the invention can realize the addition of the gold coordination in a low-cost priority mode while improving the accuracy of the addition of the gold coordination, thereby effectively improving the control degree of enterprises on the cost.
Claims (5)
1. The method for selecting and calculating the steel-making alloy addition of the converter is characterized by comprising the following steps of:
the method comprises the following steps of (1) obtaining initial components of a steel grade, target components, molten steel weight and alloy yield corresponding to various chemical elements, wherein the initial components of the steel grade comprise the initial components of various chemical elements, and the target components of the steel grade comprise the target components of various chemical elements;
step (2), calculating the consumption of various pure alloying elements to be added according to the data obtained in the step (1), (the element target component-the element initial component) and the molten steel weight/the element alloy yield (pure alloying element addition);
step (3), obtaining the addition of pure alloy silicon and pure alloy manganese according to the calculation formula in the step (2), then calculating the required manganese-silicon alloy consumption 1 according to the addition of pure alloy silicon, and calculating the required manganese-silicon alloy consumption 2 according to the addition of pure alloy manganese;
step (4), judging the using amount of the manganese-silicon alloy 1 and the using amount of the manganese-silicon alloy 2, if the using amount of the manganese-silicon alloy 1 is less than the using amount of the manganese-silicon alloy 2, selecting to pre-add the using amount of the manganese-silicon alloy 1, and if not, selecting to pre-add the using amount of the manganese-silicon alloy 2;
and (5) judging whether the components of carbon, nitrogen and phosphorus in the molten steel are smaller than the respective corresponding target components after the manganese-silicon alloy dosage in the step (4) is pre-added, if so, selecting the current manganese-silicon alloy dosage scheme, and otherwise, not selecting the current manganese-silicon alloy dosage scheme.
2. The method for selecting and calculating the alloy added for converter steelmaking according to claim 1, further comprising:
step (6), calculating the residual amount of various alloys required to be added by combining the content of various alloys in the current molten steel, the target components of the steel grade, the alloy components and the alloy yield;
step (7) judging whether the components of carbon in the molten steel are smaller than target components or not after the pre-addition of the residual various alloy amounts, if so, adding anthracite to enable the components of the carbon to reach the target components, otherwise, replacing manganese-silicon alloy with metal manganese and ferrosilicon;
and (8) judging whether the components of various pure alloys in the molten steel are larger than target components, if so, giving a warning, and otherwise, recommending a current alloy adding scheme.
3. The method for selecting and calculating the additive gold for steelmaking by converter as claimed in claim 2, wherein in the step (6), the alloy composition means the composition contents of each chemical element of each auxiliary material added in the converter steelmaking process.
4. The method for selecting and calculating the additive alloy for steelmaking by converter as claimed in claim 2, wherein in the step (7), the remaining amounts of the various alloys to be added include: micro-carbon ferrochrome, medium-carbon ferrochrome, ferroniobium, ferrovanadium, ferromolybdenum, cathode copper and electrolytic nickel.
5. The method for selecting and calculating the additive gold for steelmaking in a converter according to claim 1, wherein in the step (1), the various chemical elements include: C. si, Mn, P, S, Nb, V, Cr, Mo, Cu, Ni, N, Al, B.
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| CN112695153A (en) * | 2020-12-21 | 2021-04-23 | 江苏沙钢高科信息技术有限公司 | Method for optimizing steelmaking alloy feeding amount and reducing cost |
| CN113203653A (en) * | 2021-04-07 | 2021-08-03 | 邯郸钢铁集团有限责任公司 | Method for accurately estimating RH molten steel weight and alloy yield |
| CN113549811A (en) * | 2021-07-21 | 2021-10-26 | 攀钢集团攀枝花钢钒有限公司 | Steel-making alloy adding method |
| CN114990281A (en) * | 2022-04-30 | 2022-09-02 | 日钢营口中板有限公司 | Low-cost input control method for steelmaking alloy |
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