JPS57177912A - Preventing method for slopping of pure oxygen top blown converter - Google Patents

Preventing method for slopping of pure oxygen top blown converter

Info

Publication number
JPS57177912A
JPS57177912A JP6326281A JP6326281A JPS57177912A JP S57177912 A JPS57177912 A JP S57177912A JP 6326281 A JP6326281 A JP 6326281A JP 6326281 A JP6326281 A JP 6326281A JP S57177912 A JPS57177912 A JP S57177912A
Authority
JP
Japan
Prior art keywords
period
slopping
desiliconization
pure oxygen
blowing
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
JP6326281A
Other languages
Japanese (ja)
Inventor
Shozo Murakami
Kyosuke Honda
Mayumi Okimori
Kosuke Yamashita
Yoshitsugu Matsushima
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 JP6326281A priority Critical patent/JPS57177912A/en
Publication of JPS57177912A publication Critical patent/JPS57177912A/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 prevent the slopping in a desiliconization period completely by substituting part or the whole of bottom blowing oxygen with an inert gas alone or a mixture thereof in part or the whole of the desiliconization period. CONSTITUTION:In the state of refining pig iron to steel by an oxygen top blown converter method, N2, Ar, CO2 or air is mixed with bottom blowing pure oxygen in a continuous period from the start of blowing to the end of desiliconization or a part of said period. Any of these gases alone or a mixture thereof is substituted with pure oxygen which is blown. Then, part of the blown gas remains as a gaseous state, and the agitation of the steel bath is maintained by the foam thereof, whereby the slopping in the desiliconization period is thoroughly prevented. The slopping in the end period of the desiliconization period or after this is suppressed approximately perfectly by changing the blowing conditions.
JP6326281A 1981-04-28 1981-04-28 Preventing method for slopping of pure oxygen top blown converter Pending JPS57177912A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6326281A JPS57177912A (en) 1981-04-28 1981-04-28 Preventing method for slopping of pure oxygen top blown converter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6326281A JPS57177912A (en) 1981-04-28 1981-04-28 Preventing method for slopping of pure oxygen top blown converter

Publications (1)

Publication Number Publication Date
JPS57177912A true JPS57177912A (en) 1982-11-01

Family

ID=13224184

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6326281A Pending JPS57177912A (en) 1981-04-28 1981-04-28 Preventing method for slopping of pure oxygen top blown converter

Country Status (1)

Country Link
JP (1) JPS57177912A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55158209A (en) * 1979-05-24 1980-12-09 Sumitomo Metal Ind Ltd Composite blowing method of steel

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55158209A (en) * 1979-05-24 1980-12-09 Sumitomo Metal Ind Ltd Composite blowing method of steel

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