JPS57181304A - Method and device for spraying water at furnace top in emptying and blowing out operation of blast furnace - Google Patents

Method and device for spraying water at furnace top in emptying and blowing out operation of blast furnace

Info

Publication number
JPS57181304A
JPS57181304A JP6528381A JP6528381A JPS57181304A JP S57181304 A JPS57181304 A JP S57181304A JP 6528381 A JP6528381 A JP 6528381A JP 6528381 A JP6528381 A JP 6528381A JP S57181304 A JPS57181304 A JP S57181304A
Authority
JP
Japan
Prior art keywords
water
furnace
volume
nozzles
drops
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
JP6528381A
Other languages
Japanese (ja)
Inventor
Reizo Murakami
Yoichi Watanabe
Kazuo Ichifuji
Motozo Yasuno
Seiji Taguchi
Hideho Kubo
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.)
JFE Steel Corp
Original Assignee
Kawasaki 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 Kawasaki Steel Corp filed Critical Kawasaki Steel Corp
Priority to JP6528381A priority Critical patent/JPS57181304A/en
Publication of JPS57181304A publication Critical patent/JPS57181304A/en
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B7/00—Blast furnaces
    • C21B7/002—Evacuating and treating of exhaust gases

Abstract

PURPOSE:To economize the volume of water spraying and to prevent the danger during operation by changing the volume of water spraying and liquid drop diameters in accordance with the descending of the level of charging materials and controlling gaseous temp. surely. CONSTITUTION:The charging of raw materials into a blast furnace is stopped under sustained blasting through tuyeres and the melts are discharged from the inside of the furnace, whereby the level of the charging materials are lowered gradually until the furnace is emptied. In such emptying and blowing out operation, solenoid valves 3 for controlling flow rate are opened and water is sprayed through the water spray nozzles 5, 5', 5'' of water spray pipings 4, whereby the high gaseous temp. is reduced. At this time, water is discharged through nozzles 5 for small drops in the beginning, and through nozzles 5' for middle drops on progression of the reduction of the stock level, and further through nozzles 5' for large drops on progression of the reduction of the stock level. The water is first sprayed in the form of small drops then in larger drops so as to reach remotely; in addition, the volume of water spraying is changed to prevent the rise in the furnace top temp. In this way, the volume of water spraying is economized, and the danger during operation is prevented.
JP6528381A 1981-05-01 1981-05-01 Method and device for spraying water at furnace top in emptying and blowing out operation of blast furnace Pending JPS57181304A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6528381A JPS57181304A (en) 1981-05-01 1981-05-01 Method and device for spraying water at furnace top in emptying and blowing out operation of blast furnace

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6528381A JPS57181304A (en) 1981-05-01 1981-05-01 Method and device for spraying water at furnace top in emptying and blowing out operation of blast furnace

Publications (1)

Publication Number Publication Date
JPS57181304A true JPS57181304A (en) 1982-11-08

Family

ID=13282443

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6528381A Pending JPS57181304A (en) 1981-05-01 1981-05-01 Method and device for spraying water at furnace top in emptying and blowing out operation of blast furnace

Country Status (1)

Country Link
JP (1) JPS57181304A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2637296A1 (en) * 1988-09-30 1990-04-06 Tech Ind Fonderie Centre Process and plant for conditioning the flow of fumes from a cupola furnace

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2637296A1 (en) * 1988-09-30 1990-04-06 Tech Ind Fonderie Centre Process and plant for conditioning the flow of fumes from a cupola furnace

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