JPS5497518A - Dephosphorization of molten pig iron - Google Patents

Dephosphorization of molten pig iron

Info

Publication number
JPS5497518A
JPS5497518A JP467078A JP467078A JPS5497518A JP S5497518 A JPS5497518 A JP S5497518A JP 467078 A JP467078 A JP 467078A JP 467078 A JP467078 A JP 467078A JP S5497518 A JPS5497518 A JP S5497518A
Authority
JP
Japan
Prior art keywords
molten metal
pig iron
molten
slag
sintered ore
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
JP467078A
Other languages
Japanese (ja)
Other versions
JPS5852529B2 (en
Inventor
Akira Kawami
Tadashi Tanabe
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 JP53004670A priority Critical patent/JPS5852529B2/en
Publication of JPS5497518A publication Critical patent/JPS5497518A/en
Publication of JPS5852529B2 publication Critical patent/JPS5852529B2/en
Expired 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
    • C21C1/00—Refining of pig-iron; Cast iron
    • C21C1/02—Dephosphorising or desulfurising

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)

Abstract

PURPOSE:Molten pig iron is treated in ladel to be oxidized and desilicated removing slag of high SiO2 content. Then sintered ore is added to the molten metal which is agitated to remove phosphorus present in the molten steel by oxidation thereby providing low phosphorus pig iron. CONSTITUTION:Molten pig iron is charged in a ladel having an agitator and an oxigen-blowing lance pipe is dipped into the molten metal. While agitating the molten metal, oxygen is blown through the lance into the molten metal to oxidize mainly Si. Slag that is caused to contain increased amount of SiO2 is removed, then sintered ore, dephosphorizing agent, is added to the molten metal which is being agitated. The phosphorus present in the molten metal is oxidized by iron oxide in the sintered ore to form P2O5, which combines with CaO in the sintered ore to be stabilized in the slag. The slag is exhausted leaving low phosphorus pig iron useful in steel production.
JP53004670A 1978-01-18 1978-01-18 Method for dephosphorizing hot metal Expired JPS5852529B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP53004670A JPS5852529B2 (en) 1978-01-18 1978-01-18 Method for dephosphorizing hot metal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP53004670A JPS5852529B2 (en) 1978-01-18 1978-01-18 Method for dephosphorizing hot metal

Publications (2)

Publication Number Publication Date
JPS5497518A true JPS5497518A (en) 1979-08-01
JPS5852529B2 JPS5852529B2 (en) 1983-11-24

Family

ID=11590336

Family Applications (1)

Application Number Title Priority Date Filing Date
JP53004670A Expired JPS5852529B2 (en) 1978-01-18 1978-01-18 Method for dephosphorizing hot metal

Country Status (1)

Country Link
JP (1) JPS5852529B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002060825A (en) * 2000-08-21 2002-02-28 Kawasaki Steel Corp Method for dephosphorizing molten iron
JP2008196026A (en) * 2007-02-14 2008-08-28 Jfe Steel Kk Method for preliminarily treating molten pig iron
US7976700B2 (en) 2006-12-04 2011-07-12 Denso Corporation Water separation unit and fuel supply apparatus for internal-combustion engine

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51115218A (en) * 1975-04-02 1976-10-09 Nippon Steel Corp Dephosphorization of molten iron

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51115218A (en) * 1975-04-02 1976-10-09 Nippon Steel Corp Dephosphorization of molten iron

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002060825A (en) * 2000-08-21 2002-02-28 Kawasaki Steel Corp Method for dephosphorizing molten iron
US7976700B2 (en) 2006-12-04 2011-07-12 Denso Corporation Water separation unit and fuel supply apparatus for internal-combustion engine
JP2008196026A (en) * 2007-02-14 2008-08-28 Jfe Steel Kk Method for preliminarily treating molten pig iron

Also Published As

Publication number Publication date
JPS5852529B2 (en) 1983-11-24

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