JPS5538905A - Fixed quantity feeding method for molten slag to slag spout - Google Patents

Fixed quantity feeding method for molten slag to slag spout

Info

Publication number
JPS5538905A
JPS5538905A JP10856578A JP10856578A JPS5538905A JP S5538905 A JPS5538905 A JP S5538905A JP 10856578 A JP10856578 A JP 10856578A JP 10856578 A JP10856578 A JP 10856578A JP S5538905 A JPS5538905 A JP S5538905A
Authority
JP
Japan
Prior art keywords
slag
auxiliary hoist
spout
constant
air
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
JP10856578A
Other languages
Japanese (ja)
Other versions
JPS5754708B2 (en
Inventor
Kiyomi Taguchi
Hiroshi Funanogawa
Masaki Takenaka
Takafumi Nakahara
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.)
Mitsubishi Heavy Industries Ltd
JFE Engineering Corp
Original Assignee
Mitsubishi Heavy Industries Ltd
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 Mitsubishi Heavy Industries Ltd, NKK Corp, Nippon Kokan Ltd filed Critical Mitsubishi Heavy Industries Ltd
Priority to JP10856578A priority Critical patent/JPS5538905A/en
Publication of JPS5538905A publication Critical patent/JPS5538905A/en
Publication of JPS5754708B2 publication Critical patent/JPS5754708B2/ja
Granted 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
    • C21B2400/026—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

Landscapes

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

Abstract

PURPOSE:To manufacture air-crushed slag of constant quality, by controlling the lifting speed of an auxiliary hoist which slants a slag pan according to the signal of measured weight of the slag pan so as to keep constant the weight-changing rate of the slag contained in the slag pan. CONSTITUTION:Molten slag 4 is transferred to a slag spout 3 by slanting the slag pan by means of an auxiliary hoist 7. The quantity of the slag transferred to the spout 3 is found as a weight change by means of a load cell type weighing device 8 installed in a crane, the weight change rate dW/dt being computed by an arithmetic unit 9. The computed dW/dt is compared with previously set dW/dt 11 by means of a dW/dt control unit 10, and a command for increasing or decreasing the lifting speed of the auxiliary hoist 7 is given from the unit 10 to the driving unit 12 of the auxiliary hoist motor 13 so as to keep the compared value constant. The speed of revolution of the auxiliary hoist motor 13 is controlled according to the command to control the lifting speed of the auxiliary hoist 7. As the result, the quantity of slag 4 fed to the spout 3 is kept constant. Hereby, the slag is mixed with air sprayed from a blower 2 which is previously controlled at a constant air quantity to form a air-crushed slag 14, which is piled up on the yard 1 as particles.
JP10856578A 1978-09-06 1978-09-06 Fixed quantity feeding method for molten slag to slag spout Granted JPS5538905A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10856578A JPS5538905A (en) 1978-09-06 1978-09-06 Fixed quantity feeding method for molten slag to slag spout

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10856578A JPS5538905A (en) 1978-09-06 1978-09-06 Fixed quantity feeding method for molten slag to slag spout

Publications (2)

Publication Number Publication Date
JPS5538905A true JPS5538905A (en) 1980-03-18
JPS5754708B2 JPS5754708B2 (en) 1982-11-19

Family

ID=14488040

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10856578A Granted JPS5538905A (en) 1978-09-06 1978-09-06 Fixed quantity feeding method for molten slag to slag spout

Country Status (1)

Country Link
JP (1) JPS5538905A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59189282A (en) * 1983-03-31 1984-10-26 新日鐵化学株式会社 Method of discharging fixed quantity of high-temperature meltage

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59189282A (en) * 1983-03-31 1984-10-26 新日鐵化学株式会社 Method of discharging fixed quantity of high-temperature meltage
JPS6337313B2 (en) * 1983-03-31 1988-07-25 Shinnitsutetsu Kagaku Kk

Also Published As

Publication number Publication date
JPS5754708B2 (en) 1982-11-19

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