JPS54116304A - Controlling method for temperature of blast furnace slag to be granurated - Google Patents

Controlling method for temperature of blast furnace slag to be granurated

Info

Publication number
JPS54116304A
JPS54116304A JP2425578A JP2425578A JPS54116304A JP S54116304 A JPS54116304 A JP S54116304A JP 2425578 A JP2425578 A JP 2425578A JP 2425578 A JP2425578 A JP 2425578A JP S54116304 A JPS54116304 A JP S54116304A
Authority
JP
Japan
Prior art keywords
temp
molten slag
detected
blast furnace
target
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
JP2425578A
Other languages
Japanese (ja)
Inventor
Toshihisa Fujiwara
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 JP2425578A priority Critical patent/JPS54116304A/en
Publication of JPS54116304A publication Critical patent/JPS54116304A/en
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B3/00—General features in the manufacture of pig-iron
    • C21B3/04—Recovery of by-products, e.g. slag
    • C21B3/06—Treatment of liquid slag
    • C21B3/08—Cooling slag
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B2400/00—Treatment of slags originating from iron or steel processes
    • C21B2400/02—Physical or chemical treatment of slags
    • C21B2400/022—Methods of cooling or quenching molten slag
    • C21B2400/024—Methods of cooling or quenching molten slag with the direct use of steam or liquid coolants, e.g. water
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B2400/00—Treatment of slags originating from iron or steel processes
    • C21B2400/02—Physical or chemical treatment of slags
    • C21B2400/022—Methods of cooling or quenching molten slag
    • C21B2400/026—Methods of cooling or quenching molten slag using air, inert gases or removable conductive bodies
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B2400/00—Treatment of slags originating from iron or steel processes
    • C21B2400/05—Apparatus features
    • C21B2400/062—Jet nozzles or pressurised fluids for cooling, fragmenting or atomising slag
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B2400/00—Treatment of slags originating from iron or steel processes
    • C21B2400/05—Apparatus features
    • C21B2400/066—Receptacle features where the slag is treated
    • C21B2400/072—Tanks to collect the slag, e.g. water tank

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 cool molten slag surely to a target temp., by controlling, in cooling the molten slag discharged from a blast furnace to a temp. suited for manufacturing hard granulated slag, the quantity of cooling water or cooling air to be fed to the jacket of a molten slag shoot according to the detected temp. of the molten slag. CONSTITUTION:Molten slag 4 having flowed out of a molten iron reservoir 7 is forced to cool while passing through a molten slag shoot 1 to a lower temp., which is detected by a temp. detector 20 installed near a blowing box 9, and the detected temp. is inputted to a comparative controller 22. In the comparative controller 22, the detected temp. is compared with a target temp. previously set to a setter 21 to find the difference. The temp. of the molten slag at the outlet of the molten slag shoot 1 is controlled automatically to the target temp. by control of the quantity of cooling water or cooling air through the operation of a flow valve 15 so as to zeroes the temp. difference.
JP2425578A 1978-03-02 1978-03-02 Controlling method for temperature of blast furnace slag to be granurated Pending JPS54116304A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2425578A JPS54116304A (en) 1978-03-02 1978-03-02 Controlling method for temperature of blast furnace slag to be granurated

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2425578A JPS54116304A (en) 1978-03-02 1978-03-02 Controlling method for temperature of blast furnace slag to be granurated

Publications (1)

Publication Number Publication Date
JPS54116304A true JPS54116304A (en) 1979-09-10

Family

ID=12133128

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2425578A Pending JPS54116304A (en) 1978-03-02 1978-03-02 Controlling method for temperature of blast furnace slag to be granurated

Country Status (1)

Country Link
JP (1) JPS54116304A (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS474942U (en) * 1971-02-04 1972-09-13
JPS4936338U (en) * 1972-07-06 1974-03-30
JPS52115822A (en) * 1976-03-25 1977-09-28 Nisshin Steel Co Ltd Method for production of water crashed slag for raw materials of cement

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS474942U (en) * 1971-02-04 1972-09-13
JPS4936338U (en) * 1972-07-06 1974-03-30
JPS52115822A (en) * 1976-03-25 1977-09-28 Nisshin Steel Co Ltd Method for production of water crashed slag for raw materials of cement

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