JPS5468789A - Treating method for blast furnace slag - Google Patents

Treating method for blast furnace slag

Info

Publication number
JPS5468789A
JPS5468789A JP13566877A JP13566877A JPS5468789A JP S5468789 A JPS5468789 A JP S5468789A JP 13566877 A JP13566877 A JP 13566877A JP 13566877 A JP13566877 A JP 13566877A JP S5468789 A JPS5468789 A JP S5468789A
Authority
JP
Japan
Prior art keywords
slag
blast furnace
cooling
fine particles
furnace 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
JP13566877A
Other languages
Japanese (ja)
Inventor
Kanae Tagami
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 JP13566877A priority Critical patent/JPS5468789A/en
Publication of JPS5468789A publication Critical patent/JPS5468789A/en
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B2100/00—Handling of exhaust gases produced during the manufacture of iron or steel
    • C21B2100/40—Gas purification of exhaust gases to be recirculated or used in other metallurgical processes
    • C21B2100/42—Sulphur removal
    • 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
    • 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
    • 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
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies

Abstract

PURPOSE: To control generation of SO2 or H2S in a process for cooling molten blast furnace slag and ensure the high quality of block slag by coating the molten slag surface with fine particles of metal or metal oxide prior to water cooling.
CONSTITUTION: In the early stage of a process for cooling molten blast furnace slag, an aq. suspension of fine particles of metal or metal oxide is sprayed in an amt. corresponding to 4W10 wt% of iron to the S content of the slag to coat the slag surface in a cooling pit. Thus, generation of SO2 is controlled, and then cooling water is sprayed to prevent formation of H2S. As the fine particles, waste discharged from an iron manufacturing process in large quantities, e.g. converter dust or blast furnace dust can be used effectively. The concn. of the suspension is 0.1W1%.
COPYRIGHT: (C)1979,JPO&Japio
JP13566877A 1977-11-14 1977-11-14 Treating method for blast furnace slag Pending JPS5468789A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13566877A JPS5468789A (en) 1977-11-14 1977-11-14 Treating method for blast furnace slag

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13566877A JPS5468789A (en) 1977-11-14 1977-11-14 Treating method for blast furnace slag

Publications (1)

Publication Number Publication Date
JPS5468789A true JPS5468789A (en) 1979-06-02

Family

ID=15157132

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13566877A Pending JPS5468789A (en) 1977-11-14 1977-11-14 Treating method for blast furnace slag

Country Status (1)

Country Link
JP (1) JPS5468789A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100419634B1 (en) * 1999-12-23 2004-03-04 주식회사 포스코 A removal method of h2s generated during preparing slag sands and an apparatus used in the method
JP4865858B2 (en) * 2006-06-15 2012-02-01 ポスコ Cooling method for slag generated during pretreatment of firewood
LU91766B1 (en) * 2010-12-15 2012-06-18 Wurth Paul Sa Granulation of metallurgical slag
JP2016008159A (en) * 2014-06-25 2016-01-18 宇部興産株式会社 Method for producing blast furnace slag fine powder, and method for producing blast furnace cement

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100419634B1 (en) * 1999-12-23 2004-03-04 주식회사 포스코 A removal method of h2s generated during preparing slag sands and an apparatus used in the method
JP4865858B2 (en) * 2006-06-15 2012-02-01 ポスコ Cooling method for slag generated during pretreatment of firewood
LU91766B1 (en) * 2010-12-15 2012-06-18 Wurth Paul Sa Granulation of metallurgical slag
WO2012080364A1 (en) * 2010-12-15 2012-06-21 Paul Wurth S.A. Granulation of metallurgical slag
CN103261443A (en) * 2010-12-15 2013-08-21 保尔伍斯股份有限公司 Granulation of metallurgical slag
EA025541B1 (en) * 2010-12-15 2017-01-30 Поль Вурт С.А. Process for granulation of metallurgical slag
JP2016008159A (en) * 2014-06-25 2016-01-18 宇部興産株式会社 Method for producing blast furnace slag fine powder, and method for producing blast furnace cement

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