JPS5466316A - Converter control method - Google Patents

Converter control method

Info

Publication number
JPS5466316A
JPS5466316A JP13291077A JP13291077A JPS5466316A JP S5466316 A JPS5466316 A JP S5466316A JP 13291077 A JP13291077 A JP 13291077A JP 13291077 A JP13291077 A JP 13291077A JP S5466316 A JPS5466316 A JP S5466316A
Authority
JP
Japan
Prior art keywords
blowing
oxygen
carbon content
decarburization
steel
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
JP13291077A
Other languages
Japanese (ja)
Other versions
JPS5854170B2 (en
Inventor
Kiichi Narita
Akitsu Tomita
Nozomi Katagiri
Kazuyuki Seki
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.)
Kobe Steel Ltd
Original Assignee
Kobe Steel 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 Kobe Steel Ltd filed Critical Kobe Steel Ltd
Priority to JP52132910A priority Critical patent/JPS5854170B2/en
Priority to BR7805395A priority patent/BR7805395A/en
Priority to ZA00784734A priority patent/ZA784734B/en
Priority to CA000309823A priority patent/CA1118212A/en
Priority to AU39159/78A priority patent/AU507553B1/en
Priority to DE19782836694 priority patent/DE2836694C2/en
Priority to GB7834135A priority patent/GB2003929B/en
Priority to FR7824394A priority patent/FR2401226A1/en
Publication of JPS5466316A publication Critical patent/JPS5466316A/en
Publication of JPS5854170B2 publication Critical patent/JPS5854170B2/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

Landscapes

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

Abstract

PURPOSE:To control oxygen blowing of molten steel in a converter with good hitting rate of carbon content by continuously analyzing exhaust gas immediately before the end of blowing and grasping the blowing condition of a charge of molten steel according to the relation between decarburization oxygen efficiency and the carbon content of the steel. CONSTITUTION:In refining of steel of the desired carbon content from pig iron by decarburization due to oxygen blowing in a converter, exhaust gas is continuously colleted in the last stage of blowing to analyze the content of CO, etc. According to the relation between the analyzed value and the exhaust gas analysis time, the decarburization rate index of the charge is grasped, and the decarburization oxygen efficiency is determined in accordance with the amt. of oxygen blown. Using the index the blowing end point reaching the desired carbon content is judged, and in accordance with the value and the above efficiency, the oxygen blowing is controlled so as to attain the desired content. Thus, steel whose carbon content is up to the desired value is manufactured with good hitting rate without requiring a sublance and a measuring probe.
JP52132910A 1977-08-22 1977-11-04 Converter control method Expired JPS5854170B2 (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
JP52132910A JPS5854170B2 (en) 1977-11-04 1977-11-04 Converter control method
BR7805395A BR7805395A (en) 1977-08-22 1978-08-21 PROCESS FOR BLOW CONTROL IN CONVERTER
ZA00784734A ZA784734B (en) 1977-11-04 1978-08-21 Method for converter blow control
CA000309823A CA1118212A (en) 1977-08-22 1978-08-22 Method for converter blow control
AU39159/78A AU507553B1 (en) 1977-08-22 1978-08-22 Method for converter blow control
DE19782836694 DE2836694C2 (en) 1977-08-22 1978-08-22 Method of monitoring the endpoint when refining low carbon steel in the oxygen converter
GB7834135A GB2003929B (en) 1977-08-22 1978-08-22 Method for converter blow control
FR7824394A FR2401226A1 (en) 1977-08-22 1978-08-22 METHOD FOR DETERMINING THE END OF BLOWING IN A CONVERTER

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP52132910A JPS5854170B2 (en) 1977-11-04 1977-11-04 Converter control method

Publications (2)

Publication Number Publication Date
JPS5466316A true JPS5466316A (en) 1979-05-28
JPS5854170B2 JPS5854170B2 (en) 1983-12-03

Family

ID=15092377

Family Applications (1)

Application Number Title Priority Date Filing Date
JP52132910A Expired JPS5854170B2 (en) 1977-08-22 1977-11-04 Converter control method

Country Status (2)

Country Link
JP (1) JPS5854170B2 (en)
ZA (1) ZA784734B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100399223B1 (en) * 1998-12-30 2004-02-14 주식회사 포스코 Control method and control device of carbon steel concentration in molten steel in converter operation
KR100579374B1 (en) * 1999-12-30 2006-05-12 주식회사 포스코 Vacuum Oxygen decarburization apparatus of chromium comprising melting steel and vacuum decarburization method using the apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100399223B1 (en) * 1998-12-30 2004-02-14 주식회사 포스코 Control method and control device of carbon steel concentration in molten steel in converter operation
KR100579374B1 (en) * 1999-12-30 2006-05-12 주식회사 포스코 Vacuum Oxygen decarburization apparatus of chromium comprising melting steel and vacuum decarburization method using the apparatus

Also Published As

Publication number Publication date
JPS5854170B2 (en) 1983-12-03
ZA784734B (en) 1979-08-29

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