JPS5684411A - Steel making using pure oxygen top and bottom blown converter - Google Patents

Steel making using pure oxygen top and bottom blown converter

Info

Publication number
JPS5684411A
JPS5684411A JP16191579A JP16191579A JPS5684411A JP S5684411 A JPS5684411 A JP S5684411A JP 16191579 A JP16191579 A JP 16191579A JP 16191579 A JP16191579 A JP 16191579A JP S5684411 A JPS5684411 A JP S5684411A
Authority
JP
Japan
Prior art keywords
blown
pure oxygen
controlled
hydrocarbon
steel making
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
JP16191579A
Other languages
Japanese (ja)
Inventor
Takeshi Yamazaki
Yozo Takemura
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 JP16191579A priority Critical patent/JPS5684411A/en
Publication of JPS5684411A publication Critical patent/JPS5684411A/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
    • C21C5/35—Blowing from above and through the bath

Landscapes

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

Abstract

PURPOSE:To develop both top blown and bottom blown advantages by a method wherein the quantity of pure oxygen blown from the bottom is controlled to 5-20% of the total oxygen needed for refining, and at the same time the quantity of hydrocarbon blown from the bottom is controlled to 10-20wt% of the pure oxygen quantity. CONSTITUTION:Pure oxygen is blown into the surface of molten iron, and at the same time pure oxygen flow enclosed with gas containing hydrocarbon is blown from the bottom into the molten iron so that the molten metal is refined into steel. In this process, the quantity of pure oxygen blown from the bottom is controlled to 5-20% of the total oxygen needed for entire refining process, and the quantity of hydrocarbon simultaneously blown from the bottom is controlled to 10-20wt% of the pure oxygen blown from the bottom. The process prevents the yield reduction of alloy iron due to insufficient agitation which is the defect of top blown method, and enables mass production, i.e., the advantage of the top blown method.
JP16191579A 1979-12-13 1979-12-13 Steel making using pure oxygen top and bottom blown converter Pending JPS5684411A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16191579A JPS5684411A (en) 1979-12-13 1979-12-13 Steel making using pure oxygen top and bottom blown converter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16191579A JPS5684411A (en) 1979-12-13 1979-12-13 Steel making using pure oxygen top and bottom blown converter

Publications (1)

Publication Number Publication Date
JPS5684411A true JPS5684411A (en) 1981-07-09

Family

ID=15744437

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16191579A Pending JPS5684411A (en) 1979-12-13 1979-12-13 Steel making using pure oxygen top and bottom blown converter

Country Status (1)

Country Link
JP (1) JPS5684411A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0288711A (en) * 1988-09-26 1990-03-28 Kawasaki Steel Corp Method for protecting tuyere in converter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0288711A (en) * 1988-09-26 1990-03-28 Kawasaki Steel Corp Method for protecting tuyere in converter

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