JPS54135601A - Recoverying apparatus for heat from molten slag - Google Patents

Recoverying apparatus for heat from molten slag

Info

Publication number
JPS54135601A
JPS54135601A JP4348878A JP4348878A JPS54135601A JP S54135601 A JPS54135601 A JP S54135601A JP 4348878 A JP4348878 A JP 4348878A JP 4348878 A JP4348878 A JP 4348878A JP S54135601 A JPS54135601 A JP S54135601A
Authority
JP
Japan
Prior art keywords
molten slag
water
temp
crushed
heat
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
JP4348878A
Other languages
Japanese (ja)
Inventor
Shigeru Yoneshima
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 JP4348878A priority Critical patent/JPS54135601A/en
Publication of JPS54135601A publication Critical patent/JPS54135601A/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
    • C21B2400/05—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
    • C21B2400/08—Treatment of slags originating from iron or steel processes with energy recovery
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/25—Process efficiency

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)

Abstract

PURPOSE:To recover waste heat of molten slag discharged from a blast furnace efficiently through heat exchange, by holding the molten alag once in a molten slag reservoir, equipped with radiation-heating pipe, before it is cooled to a temp. at which it is crushed with water. CONSTITUTION:Molten slag discharged from a blast furnace is held once in a molten slag reservoir 3 before it is crushed with water. The molten slag 1 at about 1,500 deg.C heats water, which flows through many radiation-heating pipes 16 arranged at the upper part of the molten slag reservoir 3, to form steam, which is drawn off in order to recover the heat of the molten slag. The temp. and the level of the molten slag 1 are constantly measured respectively by means of a temp. detector 4 and a level detector 5, and are inputted to a controller 6. Before cooled to 1,250 deg.C or under, which is required to crush with water, the molten slag at a temp. not lower than 1,250 deg.C is delivered to a water-crushing apparatus with the degree of opening of a control stopper 8 controlled by means of a digital ram 7 driven by the controller 6. The molten slag is crushed with water and is used as a substitute for sand, which is used as an aggregate for concrete in civil engineering and construction industry.
JP4348878A 1978-04-13 1978-04-13 Recoverying apparatus for heat from molten slag Pending JPS54135601A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4348878A JPS54135601A (en) 1978-04-13 1978-04-13 Recoverying apparatus for heat from molten slag

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4348878A JPS54135601A (en) 1978-04-13 1978-04-13 Recoverying apparatus for heat from molten slag

Publications (1)

Publication Number Publication Date
JPS54135601A true JPS54135601A (en) 1979-10-22

Family

ID=12665094

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4348878A Pending JPS54135601A (en) 1978-04-13 1978-04-13 Recoverying apparatus for heat from molten slag

Country Status (1)

Country Link
JP (1) JPS54135601A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101298728B1 (en) * 2011-09-28 2013-08-21 현대제철 주식회사 Sensible heat collecting apparatus of furnace slag

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101298728B1 (en) * 2011-09-28 2013-08-21 현대제철 주식회사 Sensible heat collecting apparatus of furnace slag

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