JPS5729516A - Top-blown oxygen steelmaking method - Google Patents

Top-blown oxygen steelmaking method

Info

Publication number
JPS5729516A
JPS5729516A JP10382880A JP10382880A JPS5729516A JP S5729516 A JPS5729516 A JP S5729516A JP 10382880 A JP10382880 A JP 10382880A JP 10382880 A JP10382880 A JP 10382880A JP S5729516 A JPS5729516 A JP S5729516A
Authority
JP
Japan
Prior art keywords
lance
slag
blown oxygen
oxygen steelmaking
pendulumlike
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
JP10382880A
Other languages
Japanese (ja)
Inventor
Moriyuki Ishiguro
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 JP10382880A priority Critical patent/JPS5729516A/en
Publication of JPS5729516A publication Critical patent/JPS5729516A/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
    • C21C5/30—Regulating or controlling the blowing
    • C21C5/32—Blowing from above

Landscapes

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

Abstract

PURPOSE:To contrive to enhance the dephosphorizing bapability, the casicity of a slag and yields of iron and Mn, by a method wherein a lance is reciprocated in a pendulumlike manner relative to the surface of a steel bath during refining, in a top-blown oxygen steelmaking method utilizing a lance. CONSTITUTION:In a steelmaking furnace such as a converter, when carrying out the top-blown oxygen steelmaking process utilizing a lance, the lance is reciprocated in the pendulumlike manner relative to the surface of the steel bath. By this method, the slag forming reaction can be largely accelerated as compared to the case of a stational lance. Accordingly, the formation of the slag is facilitated, therefore the T.Fe% in the slag is lowered and the yield of Fe is enhanced. In addition, the dephosphorizing capability is largely enhanced and the Mn content of the steel is maintained at a high precentage, so that a favorable Mn yield can be obtained.
JP10382880A 1980-07-29 1980-07-29 Top-blown oxygen steelmaking method Pending JPS5729516A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10382880A JPS5729516A (en) 1980-07-29 1980-07-29 Top-blown oxygen steelmaking method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10382880A JPS5729516A (en) 1980-07-29 1980-07-29 Top-blown oxygen steelmaking method

Publications (1)

Publication Number Publication Date
JPS5729516A true JPS5729516A (en) 1982-02-17

Family

ID=14364273

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10382880A Pending JPS5729516A (en) 1980-07-29 1980-07-29 Top-blown oxygen steelmaking method

Country Status (1)

Country Link
JP (1) JPS5729516A (en)

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