JPS5460213A - Prevention of nitrogen absorption at afterblasting in converter - Google Patents

Prevention of nitrogen absorption at afterblasting in converter

Info

Publication number
JPS5460213A
JPS5460213A JP12644277A JP12644277A JPS5460213A JP S5460213 A JPS5460213 A JP S5460213A JP 12644277 A JP12644277 A JP 12644277A JP 12644277 A JP12644277 A JP 12644277A JP S5460213 A JPS5460213 A JP S5460213A
Authority
JP
Japan
Prior art keywords
converter
steel
afterblasting
oxygen
organic substance
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
JP12644277A
Other languages
Japanese (ja)
Other versions
JPS5651206B2 (en
Inventor
Yozo Takemura
Iku Kato
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 JP12644277A priority Critical patent/JPS5460213A/en
Publication of JPS5460213A publication Critical patent/JPS5460213A/en
Publication of JPS5651206B2 publication Critical patent/JPS5651206B2/ja
Granted 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 prevent the absorption of nitrogen into molten steel by the method in which in the oxygen blast smelting of steel in converter, an organic substance is added into the converter at the time of afterblasting and then burned in order to purge air. CONSTITUTION:In the oxygen blast smelting of steel in converter, after the blasting of predetermined amount of oxygen has finished, the blasting is stopped and then the composition of steel is analyzed. In case where balsting is unsufficient, oxygen is again blasted into converter to smelt steel, whereupon an organic substance, e.g., a binder-solidified saw dust, dried pulp mill waste waters, etc., is put into the converter. When the organic substance is burned in the converter, the flame purges the air in the converter and thus prevents the absorption of nitrogen present in air into molten steel at the time of afterblasting.
JP12644277A 1977-10-21 1977-10-21 Prevention of nitrogen absorption at afterblasting in converter Granted JPS5460213A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12644277A JPS5460213A (en) 1977-10-21 1977-10-21 Prevention of nitrogen absorption at afterblasting in converter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12644277A JPS5460213A (en) 1977-10-21 1977-10-21 Prevention of nitrogen absorption at afterblasting in converter

Publications (2)

Publication Number Publication Date
JPS5460213A true JPS5460213A (en) 1979-05-15
JPS5651206B2 JPS5651206B2 (en) 1981-12-03

Family

ID=14935299

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12644277A Granted JPS5460213A (en) 1977-10-21 1977-10-21 Prevention of nitrogen absorption at afterblasting in converter

Country Status (1)

Country Link
JP (1) JPS5460213A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007260741A (en) * 2006-03-29 2007-10-11 Jfe Steel Kk Method of starting continuous casting of molten steel

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007260741A (en) * 2006-03-29 2007-10-11 Jfe Steel Kk Method of starting continuous casting of molten steel

Also Published As

Publication number Publication date
JPS5651206B2 (en) 1981-12-03

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