JPS55161014A - Refining method for steel - Google Patents

Refining method for steel

Info

Publication number
JPS55161014A
JPS55161014A JP6851379A JP6851379A JPS55161014A JP S55161014 A JPS55161014 A JP S55161014A JP 6851379 A JP6851379 A JP 6851379A JP 6851379 A JP6851379 A JP 6851379A JP S55161014 A JPS55161014 A JP S55161014A
Authority
JP
Japan
Prior art keywords
blowing
oxygen
bath
period
under
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
JP6851379A
Other languages
Japanese (ja)
Inventor
Seiichi Masuda
Yujo Marukawa
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
Sumitomo Metal Industries 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 Sumitomo Metal Industries Ltd filed Critical Sumitomo Metal Industries Ltd
Priority to JP6851379A priority Critical patent/JPS55161014A/en
Publication of JPS55161014A publication Critical patent/JPS55161014A/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
    • 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
    • Y02P10/10—Reduction of greenhouse gas [GHG] emissions
    • Y02P10/143—Reduction of greenhouse gas [GHG] emissions of methane [CH4]

Landscapes

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

Abstract

PURPOSE:To strengthen the stirring force of steel bath and to shorten the blowing time and also, to improve the yield of iron by blowing a part of the whole supply amount of oxygen under the surface of the bath at the oxygen top blowing steel manufacturing. CONSTITUTION:Singular or plural nozzles are provided at the furnace bottom or on the side wall of converter and a part of the whole supply amount of oxygen is blown on occasion of using usual oxygen top blowing converter. For example, double tube nozzle is used for the nozzle and it is preferable to blow in oxygen together with gas having a large amount of heat absorption by the decomposition of each gas of methane, butane, natural gas etc. Oxygen blowing under the bath face is carried out in a period of oxygen top-blowing or a fix period after the end of oxygen top-blowing. Blowing amount of oxygen under the bath face is suitably controlled according to the progress of refining reaction during this period.
JP6851379A 1979-05-31 1979-05-31 Refining method for steel Pending JPS55161014A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6851379A JPS55161014A (en) 1979-05-31 1979-05-31 Refining method for steel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6851379A JPS55161014A (en) 1979-05-31 1979-05-31 Refining method for steel

Publications (1)

Publication Number Publication Date
JPS55161014A true JPS55161014A (en) 1980-12-15

Family

ID=13375865

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6851379A Pending JPS55161014A (en) 1979-05-31 1979-05-31 Refining method for steel

Country Status (1)

Country Link
JP (1) JPS55161014A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57149409A (en) * 1981-03-09 1982-09-16 Nippon Steel Corp Refining by top and bottom blowing converter
JPS57185917A (en) * 1981-05-12 1982-11-16 Nippon Steel Corp Steel making method by converter

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57149409A (en) * 1981-03-09 1982-09-16 Nippon Steel Corp Refining by top and bottom blowing converter
JPS635448B2 (en) * 1981-03-09 1988-02-03 Nippon Steel Corp
JPS57185917A (en) * 1981-05-12 1982-11-16 Nippon Steel Corp Steel making method by converter

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