JPS5690915A - Desiliconization treatment of molten iron - Google Patents

Desiliconization treatment of molten iron

Info

Publication number
JPS5690915A
JPS5690915A JP16785679A JP16785679A JPS5690915A JP S5690915 A JPS5690915 A JP S5690915A JP 16785679 A JP16785679 A JP 16785679A JP 16785679 A JP16785679 A JP 16785679A JP S5690915 A JPS5690915 A JP S5690915A
Authority
JP
Japan
Prior art keywords
molten iron
blast furnace
desiliconization
slag
desiliconization treatment
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
JP16785679A
Other languages
Japanese (ja)
Other versions
JPS5827322B2 (en
Inventor
Tsutomu Nozaki
Kyoji Nakanishi
Osamu Haida
Toshihiko Emi
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 Steel Corp
Original Assignee
Kawasaki 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 Kawasaki Steel Corp filed Critical Kawasaki Steel Corp
Priority to JP54167856A priority Critical patent/JPS5827322B2/en
Publication of JPS5690915A publication Critical patent/JPS5690915A/en
Publication of JPS5827322B2 publication Critical patent/JPS5827322B2/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
    • C21C1/04—Removing impurities other than carbon, phosphorus or sulfur

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 perform desiliconization treatment at low costs by adding steel making slag to molten iron in a blast furnace hearth and blowing gaseous oxygen prior to carrying out dephosphorization and desulfurization treatments of molten iron. CONSTITUTION:Gaseous oxygen is sprayed to the molten iron which is tapped from a blast furnace and has been removed of blast furnace slag with a skimmer, by using steel making slag, particularly converter slag, in the blast furnace hearth, prior to the desiliconization and desulfurization thereof. Thereby, the desiliconization may be carried out advantageously.
JP54167856A 1979-12-24 1979-12-24 Hot metal pretreatment method for steelmaking Expired JPS5827322B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54167856A JPS5827322B2 (en) 1979-12-24 1979-12-24 Hot metal pretreatment method for steelmaking

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54167856A JPS5827322B2 (en) 1979-12-24 1979-12-24 Hot metal pretreatment method for steelmaking

Publications (2)

Publication Number Publication Date
JPS5690915A true JPS5690915A (en) 1981-07-23
JPS5827322B2 JPS5827322B2 (en) 1983-06-08

Family

ID=15857352

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54167856A Expired JPS5827322B2 (en) 1979-12-24 1979-12-24 Hot metal pretreatment method for steelmaking

Country Status (1)

Country Link
JP (1) JPS5827322B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019059990A (en) * 2017-09-27 2019-04-18 Ｊｆｅスチール株式会社 Desiliconization method of molten metal

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50152917A (en) * 1974-05-30 1975-12-09
JPS51115218A (en) * 1975-04-02 1976-10-09 Nippon Steel Corp Dephosphorization of molten iron
JPS54137420A (en) * 1978-04-17 1979-10-25 Nippon Steel Corp Continuous silicon removal of molten pig iron

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50152917A (en) * 1974-05-30 1975-12-09
JPS51115218A (en) * 1975-04-02 1976-10-09 Nippon Steel Corp Dephosphorization of molten iron
JPS54137420A (en) * 1978-04-17 1979-10-25 Nippon Steel Corp Continuous silicon removal of molten pig iron

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019059990A (en) * 2017-09-27 2019-04-18 Ｊｆｅスチール株式会社 Desiliconization method of molten metal

Also Published As

Publication number Publication date
JPS5827322B2 (en) 1983-06-08

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