JPS5511153A - Blast furnace of operation method - Google Patents

Blast furnace of operation method

Info

Publication number
JPS5511153A
JPS5511153A JP8360078A JP8360078A JPS5511153A JP S5511153 A JPS5511153 A JP S5511153A JP 8360078 A JP8360078 A JP 8360078A JP 8360078 A JP8360078 A JP 8360078A JP S5511153 A JPS5511153 A JP S5511153A
Authority
JP
Japan
Prior art keywords
pressure
furnace top
blast
differential pressure
deltap
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
JP8360078A
Other languages
Japanese (ja)
Inventor
Genji Nakatani
Hiroshi Yoshida
Hideaki Inoue
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 Engineering Corp
Original Assignee
NKK Corp
Nippon Kokan 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 NKK Corp, Nippon Kokan Ltd filed Critical NKK Corp
Priority to JP8360078A priority Critical patent/JPS5511153A/en
Publication of JPS5511153A publication Critical patent/JPS5511153A/en
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B7/00—Blast furnaces
    • C21B7/007—Controlling or regulating of the top pressure

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 achieve stabilization of adequate descending and reduce the fluctuations of the in-furnace gas flow by drawing out the furnace top pressure and blast pressure from the blast furnace top and hot blast system, operating the differential pressure thereof and controlling the furnace top pressure so that the differential pressure fluctuations become smaller. CONSTITUTION:Furnace top pressure PT and blast pressure PB are continuously measured from respective pressure detecting ends 11, 15. The pressures PT, PB are then sent to the pressure gauges 12, 16 in the respective control systems A, B and the pressure signals are converted to electric signals. These electric signals are inserted into an arithmetic circuit 17 through branch circuit 19 and control system T, where the differential pressure DELTAP of the pressures PB and PT is operated. The differential pressure DELTAP is inserted into a controller 18. In the controller 18, it is compared with a set differential pressure DELTAP and the signal being the result of the comparison is sent to a septum valve 9 through electric oil device 14, by which the opening of the valve 9 is controlled and the pressure PT is regulated.
JP8360078A 1978-07-11 1978-07-11 Blast furnace of operation method Pending JPS5511153A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8360078A JPS5511153A (en) 1978-07-11 1978-07-11 Blast furnace of operation method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8360078A JPS5511153A (en) 1978-07-11 1978-07-11 Blast furnace of operation method

Publications (1)

Publication Number Publication Date
JPS5511153A true JPS5511153A (en) 1980-01-25

Family

ID=13806970

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8360078A Pending JPS5511153A (en) 1978-07-11 1978-07-11 Blast furnace of operation method

Country Status (1)

Country Link
JP (1) JPS5511153A (en)

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