JPS55138012A - Method of dephosphorizing molten iron - Google Patents

Method of dephosphorizing molten iron

Info

Publication number
JPS55138012A
JPS55138012A JP4616179A JP4616179A JPS55138012A JP S55138012 A JPS55138012 A JP S55138012A JP 4616179 A JP4616179 A JP 4616179A JP 4616179 A JP4616179 A JP 4616179A JP S55138012 A JPS55138012 A JP S55138012A
Authority
JP
Japan
Prior art keywords
molten iron
2cao
powder
sio2
oxidizing agent
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
JP4616179A
Other languages
Japanese (ja)
Inventor
Susumu Aida
Hitoshi Ono
Akira Inagaki
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 JP4616179A priority Critical patent/JPS55138012A/en
Publication of JPS55138012A publication Critical patent/JPS55138012A/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 effectively perform dephosphorization at low cost, by adding a dephosphorizing agent of 2CaO.SiO2 powder and an oxidizing agent into molten iron and stirring them to oxidize P in the molten iron by the oxidizing agent. CONSTITUTION:A powdery dephosphorizing agent 5 which is 2CaO.SiO2 powder or whose main constituent is that powder and an oxidizing agent such as mill scale or iron ore for oxidizing phosphorus are added to molten iron 3. They are stired by gas blown in through a lance pipe 6. At that time, lime powder may be added to the molten iron. The content of the 2CaO.SiO2 or (2CaO.SiO2+CaO) is preferably 25kg/t.pig or less. It is desirable to add 1 to 100 parts of the lime powder as against 100 parts of the 2CaO.SiO2 powder.
JP4616179A 1979-04-16 1979-04-16 Method of dephosphorizing molten iron Pending JPS55138012A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4616179A JPS55138012A (en) 1979-04-16 1979-04-16 Method of dephosphorizing molten iron

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4616179A JPS55138012A (en) 1979-04-16 1979-04-16 Method of dephosphorizing molten iron

Publications (1)

Publication Number Publication Date
JPS55138012A true JPS55138012A (en) 1980-10-28

Family

ID=12739278

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4616179A Pending JPS55138012A (en) 1979-04-16 1979-04-16 Method of dephosphorizing molten iron

Country Status (1)

Country Link
JP (1) JPS55138012A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106987683A (en) * 2017-04-18 2017-07-28 安徽工业大学 A kind of high efficiency dephosphorating solid particle additive and the method that high phosphorus hot metal production Low-phosphorus Steel is smelted using solid additive

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106987683A (en) * 2017-04-18 2017-07-28 安徽工业大学 A kind of high efficiency dephosphorating solid particle additive and the method that high phosphorus hot metal production Low-phosphorus Steel is smelted using solid additive

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