JPS55161011A - End point control method of oxygen converter - Google Patents

End point control method of oxygen converter

Info

Publication number
JPS55161011A
JPS55161011A JP6778379A JP6778379A JPS55161011A JP S55161011 A JPS55161011 A JP S55161011A JP 6778379 A JP6778379 A JP 6778379A JP 6778379 A JP6778379 A JP 6778379A JP S55161011 A JPS55161011 A JP S55161011A
Authority
JP
Japan
Prior art keywords
temperature
molten steel
oxygen
grade
information
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.)
Granted
Application number
JP6778379A
Other languages
Japanese (ja)
Other versions
JPS5856002B2 (en
Inventor
Yoshihiro Fujii
Toru Yoshida
Yujiro Ueda
Katsuyuki Isogami
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.)
Nippon Steel Corp
Original Assignee
Nippon Steel Corp
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 Nippon Steel Corp filed Critical Nippon Steel Corp
Priority to JP54067783A priority Critical patent/JPS5856002B2/en
Publication of JPS55161011A publication Critical patent/JPS55161011A/en
Publication of JPS5856002B2 publication Critical patent/JPS5856002B2/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • C21C5/30—Regulating or controlling the blowing
    • 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
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)

Abstract

PURPOSE:To improve the precision of achievement of molten steel temperature and C grade at end point, by estimating the molten steel temperature and C grade at blowing-out point on the basis of the observed values of molten steel temperature and C content in the midst of blowing, analytical value of exhaust gas, and measurement of flow, and controlling the operating conditions depending on the difference from the target values, in converter operation. CONSTITUTION:In the midst of oxygen blowing process in a converter, the temperature of molten steel and C content are quickly measured from the sub-lance to obtain the first information. The determined model relating to the temperature of molten steel, C content and amount of oxygen accumulated in the slag, being determined by said measurements, is taken as the second information. The flow of exhaust gas measured occasionally, analytical values, decarburization efficiency computed from the oxygen feeding flow, and amount of oxygen accumulated in slag are gathered as the third information. By comparing and matching these three kinds of information, the true temperature, C grade, and amount of oxygen accumulated in slag on every moment are estimated. On the basis of such estimation, the oxygen feeding condition, addition of scrap coolant, and other conditions are adjusted, so that the temperature of molten steel and C grade at the end point of the blowing are brought closer to the target values.
JP54067783A 1979-05-31 1979-05-31 End point control method for oxygen converter Expired JPS5856002B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54067783A JPS5856002B2 (en) 1979-05-31 1979-05-31 End point control method for oxygen converter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54067783A JPS5856002B2 (en) 1979-05-31 1979-05-31 End point control method for oxygen converter

Publications (2)

Publication Number Publication Date
JPS55161011A true JPS55161011A (en) 1980-12-15
JPS5856002B2 JPS5856002B2 (en) 1983-12-13

Family

ID=13354896

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54067783A Expired JPS5856002B2 (en) 1979-05-31 1979-05-31 End point control method for oxygen converter

Country Status (1)

Country Link
JP (1) JPS5856002B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017089001A (en) * 2015-11-02 2017-05-25 Ｊｆｅスチール株式会社 Molten metal condition estimation device, molten metal condition estimation method, and manufacturing method of molten metal
CN112063792A (en) * 2020-09-09 2020-12-11 鞍钢股份有限公司 Method for stably controlling converter terminal low oxygen value
CN115074490A (en) * 2022-07-20 2022-09-20 山东钢铁股份有限公司 Converter steelmaking decarburization method
CN115232907A (en) * 2022-09-23 2022-10-25 北京科技大学 Method and system for predicting oxygen blowing amount in converter steelmaking

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017089001A (en) * 2015-11-02 2017-05-25 Ｊｆｅスチール株式会社 Molten metal condition estimation device, molten metal condition estimation method, and manufacturing method of molten metal
CN112063792A (en) * 2020-09-09 2020-12-11 鞍钢股份有限公司 Method for stably controlling converter terminal low oxygen value
CN115074490A (en) * 2022-07-20 2022-09-20 山东钢铁股份有限公司 Converter steelmaking decarburization method
CN115074490B (en) * 2022-07-20 2024-04-02 山东钢铁股份有限公司 Converter steelmaking decarburization method
CN115232907A (en) * 2022-09-23 2022-10-25 北京科技大学 Method and system for predicting oxygen blowing amount in converter steelmaking

Also Published As

Publication number Publication date
JPS5856002B2 (en) 1983-12-13

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