JPS6455316A - Converter blowing method - Google Patents

Converter blowing method

Info

Publication number
JPS6455316A
JPS6455316A JP21075287A JP21075287A JPS6455316A JP S6455316 A JPS6455316 A JP S6455316A JP 21075287 A JP21075287 A JP 21075287A JP 21075287 A JP21075287 A JP 21075287A JP S6455316 A JPS6455316 A JP S6455316A
Authority
JP
Japan
Prior art keywords
molten steel
concn
exhaust gas
measured
sampling
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP21075287A
Other languages
Japanese (ja)
Inventor
Chihiro Taki
Junichi Fukumi
Masanori Komaya
Osamu Yamase
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JFE Engineering Corp
Original Assignee
NKK Corp
Nippon Kokan Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NKK Corp, Nippon Kokan Ltd filed Critical NKK Corp
Priority to JP21075287A priority Critical patent/JPS6455316A/en
Publication of JPS6455316A publication Critical patent/JPS6455316A/en
Pending legal-status Critical Current

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  • Carbon Steel Or Casting Steel Manufacturing (AREA)

Abstract

PURPOSE:To enable high accurate control of C concn. in molten steel at end point of blowing by continuously catching the C concn. in the molten steel from the C concn. measured value in the molten steel by sapling during refining and after that, from the continuous measured value of C concn. in the exhaust gas of a converter. CONSTITUTION:While stirring the molten iron 2 in the converter 1 by N2 gas blowing through a plug 4, O2 gas is blown into the molten iron 2 from a lance 3 and refined to produce the molten steel. Since the refining starts, after passing the prescribed time, sampling of the molten steel is executed with a sub-lance and C concn. in the molten steel is measured, to calculate the C content (C0) in the molten steel. Further, after this sampling, CO and CO2 concn. in the exhaust gas are measured with an analyzer 6 and the integrating quantity of C in the exhaust gas is continuously found from these concns. and flowing quantity of the exhaust gas measured with a flow meter 7. By this method, C content in the molten steel at some timing after sampling can be found by subtracting the C integrating quantity in the exhaust gas at this timing from the C content C0 in the molten steel and the purpose can be obtd.
JP21075287A 1987-08-25 1987-08-25 Converter blowing method Pending JPS6455316A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP21075287A JPS6455316A (en) 1987-08-25 1987-08-25 Converter blowing method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP21075287A JPS6455316A (en) 1987-08-25 1987-08-25 Converter blowing method

Publications (1)

Publication Number Publication Date
JPS6455316A true JPS6455316A (en) 1989-03-02

Family

ID=16594537

Family Applications (1)

Application Number Title Priority Date Filing Date
JP21075287A Pending JPS6455316A (en) 1987-08-25 1987-08-25 Converter blowing method

Country Status (1)

Country Link
JP (1) JPS6455316A (en)

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