JPS57134501A - Method for recovery of sensible heat of blast furnace slag - Google Patents

Method for recovery of sensible heat of blast furnace slag

Info

Publication number
JPS57134501A
JPS57134501A JP56019036A JP1903681A JPS57134501A JP S57134501 A JPS57134501 A JP S57134501A JP 56019036 A JP56019036 A JP 56019036A JP 1903681 A JP1903681 A JP 1903681A JP S57134501 A JPS57134501 A JP S57134501A
Authority
JP
Japan
Prior art keywords
blast furnace
slag
tower
recovery
molten slag
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
JP56019036A
Other languages
Japanese (ja)
Inventor
Kiyota Iwaki
Norito Iwao
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 JP56019036A priority Critical patent/JPS57134501A/en
Publication of JPS57134501A publication Critical patent/JPS57134501A/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
    • C21B2400/026—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
    • C21B2400/066—Receptacle features where the slag is treated
    • C21B2400/074—Tower structures for cooling, being confined but not sealed
    • 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
    • C21B2400/076—Fluidised bed for cooling
    • 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)
  • Furnace Details (AREA)

Abstract

PURPOSE:To recover the sensible heat of blast furnace slag effectively as a heat source to be blown into a blast furnace by dry-granulating the molten slag discharged from the blast furnace in an adjacent hea recovery tower, heating the air fed from its lower part into hot wind and passing the same through a filter material thereby removing harmful gases. CONSTITUTION:The molten slag 11 of a blast furnace carried to the upper part of a heat recovery tower 1 is accumulated once in a molten slag well 3, and a cover is put thereon, thence compressed air 8 is fed and a stopper 7 is opened to drop the molten slag to the lower part of the tower 1 through a nozzle 9. At this time, the slag 11 is dry-granulated 13 by jet air nozzles 10 provided around the nozzle 9, and while the granular slag is dropped downward, it is solidified and piled to obtain blast furnace slag particles. At the same time, the blast furnace blast 12 fed from the lower part of the tower 1 is heated, whereby the recovery of waste heat is accomplished. The hot wind heated to high temp. goes through an upper communicating pipe 16 into a hot wind purifying tower 2, where it is removed of harmful gases with a filter material 15, after which it is directed to a hot stove 21.
JP56019036A 1981-02-13 1981-02-13 Method for recovery of sensible heat of blast furnace slag Pending JPS57134501A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56019036A JPS57134501A (en) 1981-02-13 1981-02-13 Method for recovery of sensible heat of blast furnace slag

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56019036A JPS57134501A (en) 1981-02-13 1981-02-13 Method for recovery of sensible heat of blast furnace slag

Publications (1)

Publication Number Publication Date
JPS57134501A true JPS57134501A (en) 1982-08-19

Family

ID=11988203

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56019036A Pending JPS57134501A (en) 1981-02-13 1981-02-13 Method for recovery of sensible heat of blast furnace slag

Country Status (1)

Country Link
JP (1) JPS57134501A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999022031A1 (en) * 1997-10-29 1999-05-06 'holderbank' Financiere Glarus Ag Method for granulating and grinding molten material and device for carrying out said method
WO2000044942A1 (en) * 1999-01-28 2000-08-03 'holderbank' Financiere Glarus Ag Method and device for granulating and fragmenting liquid slags
CN100424187C (en) * 2006-07-20 2008-10-08 重庆大学 Liquid blast furnace slag heat recovering apparatus and method
CN101993964A (en) * 2010-11-30 2011-03-30 武汉都市环保工程技术股份有限公司 Metallurgical molten slag dry granulating and heat recovering system
GB2508199A (en) * 2012-11-23 2014-05-28 Siemens Vai Metals Tech Gmbh Slag granulation device with a tundish and a slag flow control means

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999022031A1 (en) * 1997-10-29 1999-05-06 'holderbank' Financiere Glarus Ag Method for granulating and grinding molten material and device for carrying out said method
US6082640A (en) * 1997-10-29 2000-07-04 "Holderbank"Financiere Glarus Ag Method for granulating and grinding molten material and device for carrying out said method
WO2000044942A1 (en) * 1999-01-28 2000-08-03 'holderbank' Financiere Glarus Ag Method and device for granulating and fragmenting liquid slags
CN100424187C (en) * 2006-07-20 2008-10-08 重庆大学 Liquid blast furnace slag heat recovering apparatus and method
CN101993964A (en) * 2010-11-30 2011-03-30 武汉都市环保工程技术股份有限公司 Metallurgical molten slag dry granulating and heat recovering system
GB2508199A (en) * 2012-11-23 2014-05-28 Siemens Vai Metals Tech Gmbh Slag granulation device with a tundish and a slag flow control means

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