JPS5751212A - Converter for top and bottom blowing - Google Patents

Converter for top and bottom blowing

Info

Publication number
JPS5751212A
JPS5751212A JP12451880A JP12451880A JPS5751212A JP S5751212 A JPS5751212 A JP S5751212A JP 12451880 A JP12451880 A JP 12451880A JP 12451880 A JP12451880 A JP 12451880A JP S5751212 A JPS5751212 A JP S5751212A
Authority
JP
Japan
Prior art keywords
tuyeres
oxygen
reaction
refining
slag
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
JP12451880A
Other languages
Japanese (ja)
Other versions
JPS6140011B2 (en
Inventor
Akiya Ozeki
Teruyuki Hasegawa
Youichi Nimura
Kenzo Yamada
Tsutomu Usui
Kounoshin Tamura
Toshio Edane
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.)
JFE Engineering Corp
Original Assignee
NKK Corp
Nippon Kokan 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 NKK Corp, Nippon Kokan Ltd filed Critical NKK Corp
Priority to JP12451880A priority Critical patent/JPS5751212A/en
Publication of JPS5751212A publication Critical patent/JPS5751212A/en
Publication of JPS6140011B2 publication Critical patent/JPS6140011B2/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
    • C21C5/35—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 accelerate the stirring of molten metal and molten slag in a converter and accelerate the reaction in steel making-refining and the reaction in slag making by providing bottom tuyeres in specific positions in the relation thereof with a top blown oxygen jet, in an oxygen top blown converter provided with the bottom tuyeres. CONSTITUTION:In an oxygen top blown converter provided with bottom tuyeres 5, the positions of the tuyeres 5 are set between the circumferece (a) that the extension line of an oxygen jet 3 from a top blowing oxygen lance 2 draws on the bottom surface of the surface and the circumference (b) that the point of 1/2 the distance from the circumference (a) up to the inside circumference 11 of the furnace wall draws. Molten metal 4 and molten slag are thoroughly stirred by the oxygen jet 3 from the lance 2 and the stirring gas such as Ar from the tuyeres 5, whereby the reaction in steel making refining such as decarburization is accelerated, the reaction in slag making is accelerated and the efficiency of refining is considerably improved.
JP12451880A 1980-09-10 1980-09-10 Converter for top and bottom blowing Granted JPS5751212A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12451880A JPS5751212A (en) 1980-09-10 1980-09-10 Converter for top and bottom blowing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12451880A JPS5751212A (en) 1980-09-10 1980-09-10 Converter for top and bottom blowing

Publications (2)

Publication Number Publication Date
JPS5751212A true JPS5751212A (en) 1982-03-26
JPS6140011B2 JPS6140011B2 (en) 1986-09-06

Family

ID=14887455

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12451880A Granted JPS5751212A (en) 1980-09-10 1980-09-10 Converter for top and bottom blowing

Country Status (1)

Country Link
JP (1) JPS5751212A (en)

Also Published As

Publication number Publication date
JPS6140011B2 (en) 1986-09-06

Similar Documents

Publication Publication Date Title
JPS57131313A (en) Oxidated gas, particularly oxygen blast lance for treating molten metal
ES2189850T3 (en) METHOD FOR DIRECT USE OF CHROMITE MINERAL IN STAINLESS STEEL PRODUCTION.
ES8101648A1 (en) Converter steelmaking process.
GB1057805A (en) Process and apparatus for the continuous refining of metals
JPS57145917A (en) Refining method for high chromium steel
JPS5623215A (en) Converter steel making method
GB1097811A (en) Refining pig iron
JPS5751212A (en) Converter for top and bottom blowing
JPS55158208A (en) Refining method of steel
ES8402355A1 (en) Process for producing steel in a converter from pig iron and ferrous scrap.
JPS5565313A (en) Steel manufacture with top blown oxygen
JPS52105515A (en) Dephosphorization of molten pig iron
JPS5798617A (en) Dephosphorizing method for molten pig iron
JPS57149409A (en) Refining by top and bottom blowing converter
JPS57161018A (en) Refining method for molten iron
JPS5792115A (en) Dephosphorization method for molten iron
JPS5576013A (en) Al adding method to molten steel
JPS6455360A (en) Smelting reduction process for chromitite
JPS55161016A (en) Refining method for bottom blowing converter
JPS5638411A (en) Steel making by converter
JPS5544569A (en) Choke preventing method of gas blowing nozzle
JPS6428314A (en) Converter blowing method
JPS5729517A (en) Steelmaking method using top-blown converter
JPS5798618A (en) Decarbulizing refining method for molten pig iron that enlarges reserve heat
Pehlke Pneumatic steelmaking