CN113009103A - On-line calculation method for carbon content of converter mouth - Google Patents
On-line calculation method for carbon content of converter mouth Download PDFInfo
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- CN113009103A CN113009103A CN201911316861.XA CN201911316861A CN113009103A CN 113009103 A CN113009103 A CN 113009103A CN 201911316861 A CN201911316861 A CN 201911316861A CN 113009103 A CN113009103 A CN 113009103A
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- flue
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/20—Metals
- G01N33/205—Metals in liquid state, e.g. molten metals
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- 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
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- Health & Medical Sciences (AREA)
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- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
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- Carbon Steel Or Casting Steel Manufacturing (AREA)
Abstract
The invention relates to an on-line calculation method for the carbon content of a converter mouth, belonging to the technical field of detection; the invention comprises the following steps: measuring real-time oxygen blowing amount in the converter blowing process, determining average oxygen supply amount, and measuring the content of carbon monoxide and carbon dioxide in the real-time oxygen blowing amount; step two: measuring the flue gas flow of the converter flue gas and the flow velocity of the flue gas in the flue, and determining the actual length of the flue; step three: measuring the contents of carbon monoxide, carbon dioxide and oxygen in the flue, simultaneously determining the time for detecting the change of the gas content in the flue, and determining the carbon content of the flue circulating gas in the converter process; step four: calculating a variable output coefficient of furnace mouth micro-differential pressure regulation; step five: calculating the carbon content C of the molten iron; the method can conveniently measure the carbon content of the molten iron only by determining various data.
Description
Technical Field
The invention relates to an on-line calculation method for the carbon content of a converter mouth, belonging to the technical field of detection.
Background
The method mainly comprises the following steps of controlling the carbon content in the molten iron of the converter and controlling the carbon content at the steelmaking end point of the converter in the smelting process of the converter. Because the decarburization reaction speed in the smelting process is high, the accurate, quick and real-time judgment of the carbon content in the molten steel is very important. Under actual production conditions, because the carbon content in the molten steel cannot be accurately measured in real time, the carbon is frequently pulled for a plurality of times in converter steelmaking, and as a result of the carbon pulling for a plurality of times, the iron content in slag is higher, the consumption of steel materials is higher, the oxidability of the molten steel is too strong, the quality of steel is influenced, and the smelting time is prolonged. Therefore, it is necessary to detect the carbon content in the molten iron in real time, rapidly and accurately.
Disclosure of Invention
In order to solve the above problems, the present invention provides a method for rapidly and accurately detecting the carbon content in molten iron.
The technical scheme adopted by the invention is as follows: an on-line calculation method for the carbon content of a converter mouth comprises the following steps:
the method comprises the following steps: measuring real-time oxygen blowing amount in the converter blowing process, determining average oxygen supply amount, and measuring the content of carbon monoxide and carbon dioxide in the real-time oxygen blowing amount;
step two: measuring the flue gas flow of the converter flue gas and the flow velocity of the flue gas in the flue, and determining the actual length of the flue;
step three: measuring the contents of carbon monoxide, carbon dioxide and oxygen in the flue, simultaneously determining the time for detecting the change of the gas content in the flue, and determining the carbon content of the flue circulating gas in the converter process;
step four: calculating the variable output coefficient of furnace mouth micro-differential pressure regulation:
SP＝(0.015×POP+2025)×QOC
wherein SP is the flue gas flow; POP is a variable output coefficient of furnace mouth micro-differential pressure regulation: QO is the average oxygen supply;
step five: calculating the carbon content C of the molten iron:
and C is POP (carbon content of flue gas flowing in the converter process).
The scheme is further improved in that: by the formula 4C + O2＝2CO+CO2And determining the carbon content in the gas.
The invention has the beneficial effects that: the method can conveniently measure the carbon content of the molten iron only by determining various data.
Detailed Description
Through the description of the embodiments, the detailed implementation of the present invention, such as the mutual positions and connection relationships between the related parts, the functions and operating principles of the parts, the operation and using method, etc., will be further described in detail to help those skilled in the art to more completely, accurately and deeply understand the concept and technical solution of the present invention.
Examples
The method comprises the following steps: measuring the real-time oxygen blowing amount in the converter blowing process, determining the average oxygen supply amount, and measuring the content of carbon monoxide and carbon dioxide in the real-time oxygen blowing amount.
Step two: and measuring the flue gas flow of the converter flue gas and the flow velocity of the flue gas in the flue, and determining the actual length of the flue.
Step three: and measuring the contents of carbon monoxide, carbon dioxide and oxygen in the flue, determining the time for detecting the change of the gas content in the flue, and determining the carbon content of the circulating gas in the flue in the converter process.
Step four: and calculating the variable output coefficient of furnace mouth micro-differential pressure regulation.
SP＝(0.015×POP+2025)×QOC
Wherein SP is the flue gas flow; POP is a variable output coefficient of furnace mouth micro-differential pressure regulation: QO is the average oxygen supply.
Step five: calculating the carbon content C of the molten iron:
and C is POP (carbon content of flue gas flowing in the converter process).
The scheme is further improved in that: by the formula 4C + O2＝2CO+CO2And determining the carbon content in the gas.
The present invention is not limited to the above embodiments, and any technical solutions formed by equivalent substitutions fall within the scope of the present invention.
Claims (2)
1. An on-line calculation method for the carbon content of a converter mouth is characterized by comprising the following steps:
the method comprises the following steps: measuring real-time oxygen blowing amount in the converter blowing process, determining average oxygen supply amount, and measuring the content of carbon monoxide and carbon dioxide in the real-time oxygen blowing amount;
step two: measuring the flue gas flow of the converter flue gas and the flow velocity of the flue gas in the flue, and determining the actual length of the flue;
step three: measuring the contents of carbon monoxide, carbon dioxide and oxygen in the flue, simultaneously determining the time for detecting the change of the gas content in the flue, and determining the carbon content of the flue circulating gas in the converter process;
step four: calculating the variable output coefficient of furnace mouth micro-differential pressure regulation:
SP＝(0.015×POP+2025)×QOC
wherein SP is the flue gas flow; POP is a variable output coefficient of furnace mouth micro-differential pressure regulation: QO is the average oxygen supply;
step five: calculating the carbon content C of the molten iron:
and C is POP (carbon content of flue gas flowing in the converter process).
2. The on-line calculation method for the carbon content at the converter mouth of the converter according to claim 1, characterized in that:
by the formula 4C + O2＝2CO+CO2And determining the carbon content in the gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911316861.XA CN113009103A (en) | 2019-12-19 | 2019-12-19 | On-line calculation method for carbon content of converter mouth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911316861.XA CN113009103A (en) | 2019-12-19 | 2019-12-19 | On-line calculation method for carbon content of converter mouth |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113009103A true CN113009103A (en) | 2021-06-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911316861.XA Pending CN113009103A (en) | 2019-12-19 | 2019-12-19 | On-line calculation method for carbon content of converter mouth |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3329495A (en) * | 1963-09-26 | 1967-07-04 | Yawata Iron & Steel Co | Process for measuring the value of carbon content of a steel bath in an oxygen top-blowing converter |
| CN201237573Y (en) * | 2008-01-31 | 2009-05-13 | 胡志刚 | Molten steel continuous carbometer for on-line gas analysis |
| CN103981330A (en) * | 2014-05-27 | 2014-08-13 | 北京佰能电气技术有限公司 | Method and device for measuring carbon content of molten steel |
-
2019
- 2019-12-19 CN CN201911316861.XA patent/CN113009103A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3329495A (en) * | 1963-09-26 | 1967-07-04 | Yawata Iron & Steel Co | Process for measuring the value of carbon content of a steel bath in an oxygen top-blowing converter |
| CN201237573Y (en) * | 2008-01-31 | 2009-05-13 | 胡志刚 | Molten steel continuous carbometer for on-line gas analysis |
| CN103981330A (en) * | 2014-05-27 | 2014-08-13 | 北京佰能电气技术有限公司 | Method and device for measuring carbon content of molten steel |
Non-Patent Citations (3)
| Title |
|---|
| 徐钢等: "基于函数型数字孪生模型的转炉炼钢终点碳控制技术", 《工程科学学报》 * |
| 杨东武: "蒸发冷却技术在炼钢LT干法除尘系统上的应用", 《冶金动力》 * |
| 马春生: "《转炉烟气净化与回收工艺》", 31 March 2014, 冶金工业出版社 * |
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Application publication date: 20210622 |
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