JPS56166315A - Dephosphorizing and desulfurizing method for molten iron - Google Patents

Dephosphorizing and desulfurizing method for molten iron

Info

Publication number
JPS56166315A
JPS56166315A JP6495280A JP6495280A JPS56166315A JP S56166315 A JPS56166315 A JP S56166315A JP 6495280 A JP6495280 A JP 6495280A JP 6495280 A JP6495280 A JP 6495280A JP S56166315 A JPS56166315 A JP S56166315A
Authority
JP
Japan
Prior art keywords
iron
dephosphorizing
dephosphorize
added
molten iron
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
JP6495280A
Other languages
Japanese (ja)
Inventor
Hisashi Mori
Isao Tanaka
Hitoshi Ono
Tamenori Masui
Hiroyuki Nakajima
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 JP6495280A priority Critical patent/JPS56166315A/en
Publication of JPS56166315A publication Critical patent/JPS56166315A/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
    • 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:To economically dephosphorize and desulfurize desiliconized molten iron efficiently by adding a dephosphorizing agent based on 2CaO.SiO2 to the iron, further adding a solid oxidizing agent and/or O2 to dephosphorize the iron, and carrying out desulfurization in the presence of soda ash. CONSTITUTION:To desiliconized molten iron contg. preferably <=0.15wt% Si is added a dephosphorizing agent based on 2CaO.SiO2 corresponding to 3-6 times as much CaO as Si. After adding the agent, a solid oxidizing agent such as iron ore other iron oxide-base material and/or O2 is blown into the iron through a lance or added to the iron and agitated to dephosphorize the iron. Without discharging slag, soda ash is blown into the dephosphorized iron through a lance or added to the iron and agitated to desulfurize the iron.
JP6495280A 1980-05-16 1980-05-16 Dephosphorizing and desulfurizing method for molten iron Pending JPS56166315A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6495280A JPS56166315A (en) 1980-05-16 1980-05-16 Dephosphorizing and desulfurizing method for molten iron

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6495280A JPS56166315A (en) 1980-05-16 1980-05-16 Dephosphorizing and desulfurizing method for molten iron

Publications (1)

Publication Number Publication Date
JPS56166315A true JPS56166315A (en) 1981-12-21

Family

ID=13272876

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6495280A Pending JPS56166315A (en) 1980-05-16 1980-05-16 Dephosphorizing and desulfurizing method for molten iron

Country Status (1)

Country Link
JP (1) JPS56166315A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58161716A (en) * 1982-03-18 1983-09-26 Nippon Steel Corp Highly efficient deP/S refining method for hot metal
JPS61153222A (en) * 1984-12-27 1986-07-11 Kobe Steel Ltd Manufacture of low p, low s, high mn steel

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58161716A (en) * 1982-03-18 1983-09-26 Nippon Steel Corp Highly efficient deP/S refining method for hot metal
JPS61153222A (en) * 1984-12-27 1986-07-11 Kobe Steel Ltd Manufacture of low p, low s, high mn steel

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