JPS57174409A - Operating method of converter - Google Patents

Operating method of converter

Info

Publication number
JPS57174409A
JPS57174409A JP5994581A JP5994581A JPS57174409A JP S57174409 A JPS57174409 A JP S57174409A JP 5994581 A JP5994581 A JP 5994581A JP 5994581 A JP5994581 A JP 5994581A JP S57174409 A JPS57174409 A JP S57174409A
Authority
JP
Japan
Prior art keywords
slopping
refining
molten iron
converter
blow
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
JP5994581A
Other languages
Japanese (ja)
Inventor
Kenji Saito
Kyoji Nakanishi
Tsutomu Nozaki
Toshihiko Emi
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 Steel Corp
Original Assignee
Kawasaki 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 Kawasaki Steel Corp filed Critical Kawasaki Steel Corp
Priority to JP5994581A priority Critical patent/JPS57174409A/en
Publication of JPS57174409A publication Critical patent/JPS57174409A/en
Pending 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

Landscapes

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

Abstract

PURPOSE:To prevent generation of slopping, by adjusting various conditions so that a slopping index value calculated by a specific expression becomes <=1, in case of performing oxygen blow-refining of a molten iron by various converters. CONSTITUTION:When manufacturing steel by means of oxygen blow-refining of a molten iron by various converters of uppe blowing, upper bottom blowing and bottom blowing, a slopping index value S.I is calculated from each condition in the expression before starting the blow-refining. In case when this S.I is large, it is prevented that slopping is generated and yield of the molten iron in the converter is reduced, by changing one or more of factors such as an oxygen feed speed g02, the throw-in quantity Wore, of iron ore and mill scale, basicity CaO/SiO2 of slag, viscosity mu of slag a converter space rate E, etc., and adjusting the S.I value to <=1.
JP5994581A 1981-04-20 1981-04-20 Operating method of converter Pending JPS57174409A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5994581A JPS57174409A (en) 1981-04-20 1981-04-20 Operating method of converter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5994581A JPS57174409A (en) 1981-04-20 1981-04-20 Operating method of converter

Publications (1)

Publication Number Publication Date
JPS57174409A true JPS57174409A (en) 1982-10-27

Family

ID=13127787

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5994581A Pending JPS57174409A (en) 1981-04-20 1981-04-20 Operating method of converter

Country Status (1)

Country Link
JP (1) JPS57174409A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015224389A (en) * 2014-05-30 2015-12-14 新日鐵住金株式会社 Slopping prognosis method in converter blowing

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015224389A (en) * 2014-05-30 2015-12-14 新日鐵住金株式会社 Slopping prognosis method in converter blowing

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