JPS5460212A - Steel making by pure oxygen bottom blast converter - Google Patents

Steel making by pure oxygen bottom blast converter

Info

Publication number
JPS5460212A
JPS5460212A JP12701677A JP12701677A JPS5460212A JP S5460212 A JPS5460212 A JP S5460212A JP 12701677 A JP12701677 A JP 12701677A JP 12701677 A JP12701677 A JP 12701677A JP S5460212 A JPS5460212 A JP S5460212A
Authority
JP
Japan
Prior art keywords
tuere
steel
pure oxygen
tube
bottom blast
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
JP12701677A
Other languages
Japanese (ja)
Other versions
JPS569250B2 (en
Inventor
Masayuki Taga
Toru Matsuo
Takashi Fukui
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 JP12701677A priority Critical patent/JPS5460212A/en
Publication of JPS5460212A publication Critical patent/JPS5460212A/en
Publication of JPS569250B2 publication Critical patent/JPS569250B2/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
    • C21C5/34—Blowing 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 prevent molten damage at tuere and also the rise of hydrogen content during steel melting by blasting CO2 as tuere cooling agent from the external tube of a double tube tuere during the smelting of steel in a pure oxygen bottom blast converter. CONSTITUTION:In the oxygen blast smelting of steel in a pure oxygen bottom blast converter, CO2 gas is blasted from the external tube of a double tube tuere, together with oxygen from the internal tube. The tuere is cooled by an endothermic reaction occurred upon the dissociation of CO2 into CO and O2 at high temperatures, which prevents the tuere from damage by melting. And, this method uses no hydrocarbon gas as in the conventional cases and thus no solution of hydrogen takes place, suppressing the increase in hydrogen content in smelted steel. Thus, the need for dehydrogenation treatment can be eliminated.
JP12701677A 1977-10-22 1977-10-22 Steel making by pure oxygen bottom blast converter Granted JPS5460212A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12701677A JPS5460212A (en) 1977-10-22 1977-10-22 Steel making by pure oxygen bottom blast converter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12701677A JPS5460212A (en) 1977-10-22 1977-10-22 Steel making by pure oxygen bottom blast converter

Publications (2)

Publication Number Publication Date
JPS5460212A true JPS5460212A (en) 1979-05-15
JPS569250B2 JPS569250B2 (en) 1981-02-28

Family

ID=14949593

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12701677A Granted JPS5460212A (en) 1977-10-22 1977-10-22 Steel making by pure oxygen bottom blast converter

Country Status (1)

Country Link
JP (1) JPS5460212A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0023627A1 (en) * 1979-08-07 1981-02-11 Eisenwerk-Gesellschaft Maximilianshütte mbH Process for producing low-hydrogen content steel in a bottom-blown oxygen converter
JPS5620112A (en) * 1979-07-30 1981-02-25 Nippon Steel Corp Production of low hydrogen steel
FR2476679A1 (en) * 1980-02-27 1981-08-28 Kawasaki Steel Co PROCESS FOR COOLING CAST IRON TURNING PIPES
JPS56170865U (en) * 1980-05-21 1981-12-17
JPS5719318A (en) * 1980-07-05 1982-02-01 Nippon Steel Corp Method for protecting bottom blowing tuyere
JPS58221212A (en) * 1982-06-15 1983-12-22 Kawasaki Steel Corp Operating method of converter having double-pipe tuyere
US5139569A (en) * 1989-04-13 1992-08-18 Messer Griesheim Process for the production of alloy steel grades using treatment gas consisting of CO2
EP2789698A1 (en) * 2013-03-12 2014-10-15 ATI Properties, Inc. Alloy refining methods

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5620112A (en) * 1979-07-30 1981-02-25 Nippon Steel Corp Production of low hydrogen steel
JPS6120607B2 (en) * 1979-07-30 1986-05-23 Nippon Steel Corp
EP0023627A1 (en) * 1979-08-07 1981-02-11 Eisenwerk-Gesellschaft Maximilianshütte mbH Process for producing low-hydrogen content steel in a bottom-blown oxygen converter
FR2476679A1 (en) * 1980-02-27 1981-08-28 Kawasaki Steel Co PROCESS FOR COOLING CAST IRON TURNING PIPES
JPS56170865U (en) * 1980-05-21 1981-12-17
JPS5719318A (en) * 1980-07-05 1982-02-01 Nippon Steel Corp Method for protecting bottom blowing tuyere
JPS58221212A (en) * 1982-06-15 1983-12-22 Kawasaki Steel Corp Operating method of converter having double-pipe tuyere
US5139569A (en) * 1989-04-13 1992-08-18 Messer Griesheim Process for the production of alloy steel grades using treatment gas consisting of CO2
EP2789698A1 (en) * 2013-03-12 2014-10-15 ATI Properties, Inc. Alloy refining methods
US9045805B2 (en) 2013-03-12 2015-06-02 Ati Properties, Inc. Alloy refining methods
US9683273B2 (en) 2013-03-12 2017-06-20 Ati Properties Llc Alloy refining methods

Also Published As

Publication number Publication date
JPS569250B2 (en) 1981-02-28

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