JPS5669311A - Method of operating reducing blowing-out for blast furnace - Google Patents

Method of operating reducing blowing-out for blast furnace

Info

Publication number
JPS5669311A
JPS5669311A JP14563279A JP14563279A JPS5669311A JP S5669311 A JPS5669311 A JP S5669311A JP 14563279 A JP14563279 A JP 14563279A JP 14563279 A JP14563279 A JP 14563279A JP S5669311 A JPS5669311 A JP S5669311A
Authority
JP
Japan
Prior art keywords
tuyere
reducing
furnace
height
contents
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
JP14563279A
Other languages
Japanese (ja)
Inventor
Kenichi Sato
Shinichi Shibusawa
Kenji Mori
Katsuyuki Norimatsu
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
Sumitomo Metal Industries Ltd
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 Sumitomo Metal Industries Ltd filed Critical Sumitomo Metal Industries Ltd
Priority to JP14563279A priority Critical patent/JPS5669311A/en
Publication of JPS5669311A publication Critical patent/JPS5669311A/en
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B5/00—Making pig-iron in the blast furnace

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacture Of Iron (AREA)

Abstract

PURPOSE:To make the reducing operation stable, reduce the work time and the treating capacity by forcibly blasting into the furnace from a blast port located at a position lower than a tuyere during the end of the reducing blowing-out operation and burning completely the residual coke. CONSTITUTION:During the end of the reducing, blowing-out operation when the reducing level 3 of charge 2 in a blast furnace 1 descends to the height of a tuyere 4, air is forcibly blasted from a blast port 5 located below the height of the tuyere and natural air passes from the tuyere 4. Thus, the residual coke in the furnace 1 is completely burnt and the contents located below the height of the tuyere 4 is successively reduced. In accordance with this method, the treatment after the reducing completion are finished earlier since contents are little, and cooling by a natural draught and scraping out operation of contents are completed early and further operations such as the research in the furnace can be done at an early time.
JP14563279A 1979-11-09 1979-11-09 Method of operating reducing blowing-out for blast furnace Pending JPS5669311A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14563279A JPS5669311A (en) 1979-11-09 1979-11-09 Method of operating reducing blowing-out for blast furnace

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14563279A JPS5669311A (en) 1979-11-09 1979-11-09 Method of operating reducing blowing-out for blast furnace

Publications (1)

Publication Number Publication Date
JPS5669311A true JPS5669311A (en) 1981-06-10

Family

ID=15389489

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14563279A Pending JPS5669311A (en) 1979-11-09 1979-11-09 Method of operating reducing blowing-out for blast furnace

Country Status (1)

Country Link
JP (1) JPS5669311A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100431602B1 (en) * 2002-08-23 2004-05-17 주식회사 포스코 Drain promotion method of melting matter existing in the blast furnace when air dropping
JP2017061716A (en) * 2015-09-24 2017-03-30 新日鐵住金株式会社 Method for increasing temperature of charging material and residual material in furnace at blast furnace bottom

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55110707A (en) * 1979-02-16 1980-08-26 Sumitomo Metal Ind Ltd Blowing-out method of blast furnace

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55110707A (en) * 1979-02-16 1980-08-26 Sumitomo Metal Ind Ltd Blowing-out method of blast furnace

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100431602B1 (en) * 2002-08-23 2004-05-17 주식회사 포스코 Drain promotion method of melting matter existing in the blast furnace when air dropping
JP2017061716A (en) * 2015-09-24 2017-03-30 新日鐵住金株式会社 Method for increasing temperature of charging material and residual material in furnace at blast furnace bottom

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