JPS55115911A - Out-of-furnace detitanating method of molten iron - Google Patents

Out-of-furnace detitanating method of molten iron

Info

Publication number
JPS55115911A
JPS55115911A JP2250879A JP2250879A JPS55115911A JP S55115911 A JPS55115911 A JP S55115911A JP 2250879 A JP2250879 A JP 2250879A JP 2250879 A JP2250879 A JP 2250879A JP S55115911 A JPS55115911 A JP S55115911A
Authority
JP
Japan
Prior art keywords
iron
slag
molten iron
amount
twice
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
JP2250879A
Other languages
Japanese (ja)
Inventor
Hiroo Takahashi
Kanehiro Sato
Masaru Meguro
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 JP2250879A priority Critical patent/JPS55115911A/en
Publication of JPS55115911A publication Critical patent/JPS55115911A/en
Pending legal-status Critical Current

Links

Landscapes

  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)

Abstract

PURPOSE: To remove and reduce the Ti in casting iron in preference to other component elements by adding slag-forming agent more than once and N compound more than twice or continuously to molten iron and capturing Ti nitrides formed as slag.
CONSTITUTION: A slag forming agent (e.g. limestone, Na2CO3) is added more than once and N compound (e.g., CaCN2, Si3N4) not less than twice or continuously to molten iron (particularly casting iron Class 3). Thence, the TiN formed is mechanically captured as slag and is floated on th molten iron surface and is thereby separated. According to this method, the iron making raw materials such as iron ore which have been infeasible to be compounded or whose compounding amount has been limited owing to high Ti contents may be used or increased ore amount. Further, iron kinds have hitherto been properly blown while attention is being given to the Si and Ti amounts in the pig iron, but according to this method, the charged Ti amount will not rate-determine the action in the blast furnace operation, thus the blast furnace operation stabilizes.
COPYRIGHT: (C)1980,JPO&Japio
JP2250879A 1979-03-01 1979-03-01 Out-of-furnace detitanating method of molten iron Pending JPS55115911A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2250879A JPS55115911A (en) 1979-03-01 1979-03-01 Out-of-furnace detitanating method of molten iron

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2250879A JPS55115911A (en) 1979-03-01 1979-03-01 Out-of-furnace detitanating method of molten iron

Publications (1)

Publication Number Publication Date
JPS55115911A true JPS55115911A (en) 1980-09-06

Family

ID=12084687

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2250879A Pending JPS55115911A (en) 1979-03-01 1979-03-01 Out-of-furnace detitanating method of molten iron

Country Status (1)

Country Link
JP (1) JPS55115911A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110283950A (en) * 2019-08-05 2019-09-27 安徽工业大学 Method for removing titanium in furnace during a kind of blast furnace process high-purity pig iron

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110283950A (en) * 2019-08-05 2019-09-27 安徽工业大学 Method for removing titanium in furnace during a kind of blast furnace process high-purity pig iron

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