JPS569310A - Dephosphorization of iron or steel - Google Patents

Dephosphorization of iron or steel

Info

Publication number
JPS569310A
JPS569310A JP8547579A JP8547579A JPS569310A JP S569310 A JPS569310 A JP S569310A JP 8547579 A JP8547579 A JP 8547579A JP 8547579 A JP8547579 A JP 8547579A JP S569310 A JPS569310 A JP S569310A
Authority
JP
Japan
Prior art keywords
steel
pig iron
molten pig
ammonia
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
JP8547579A
Other languages
Japanese (ja)
Inventor
Chobe Taguchi
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP8547579A priority Critical patent/JPS569310A/en
Publication of JPS569310A publication Critical patent/JPS569310A/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)
  • Treatment Of Steel In Its Molten State (AREA)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)

Abstract

PURPOSE:To remove phosphorus present in molten pig iron by blowing ammonia into molten pig iron or steel or adding an ammonium salt into the molten pig iron or steel. CONSTITUTION:Ammonia is blown into a molten pig iron or steel or an ammonium salt is added to the molten pig iron or steel to convert phosphorus present in the molten pig iron or steel into hydrogen phosphide gas which is, as a result, removed. For example, molten pig iron or steel is taken in a laddle and then ammonia is blown into the molten pig iron of steel by using a porous plug made of a fire-proof material for dephosphorization. Thus, the phosphorus present in the molten pig iron or steel can be remarkably reduced.
JP8547579A 1979-07-04 1979-07-04 Dephosphorization of iron or steel Pending JPS569310A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8547579A JPS569310A (en) 1979-07-04 1979-07-04 Dephosphorization of iron or steel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8547579A JPS569310A (en) 1979-07-04 1979-07-04 Dephosphorization of iron or steel

Publications (1)

Publication Number Publication Date
JPS569310A true JPS569310A (en) 1981-01-30

Family

ID=13859924

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8547579A Pending JPS569310A (en) 1979-07-04 1979-07-04 Dephosphorization of iron or steel

Country Status (1)

Country Link
JP (1) JPS569310A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE112011100598B4 (en) 2010-02-19 2023-08-03 Shin-Etsu Handotai Co., Ltd. Polishing head and polishing device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE112011100598B4 (en) 2010-02-19 2023-08-03 Shin-Etsu Handotai Co., Ltd. Polishing head and polishing device

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