JPS5747808A - Regenerating method for dust after desulfurization of hot iron - Google Patents

Regenerating method for dust after desulfurization of hot iron

Info

Publication number
JPS5747808A
JPS5747808A JP12149080A JP12149080A JPS5747808A JP S5747808 A JPS5747808 A JP S5747808A JP 12149080 A JP12149080 A JP 12149080A JP 12149080 A JP12149080 A JP 12149080A JP S5747808 A JPS5747808 A JP S5747808A
Authority
JP
Japan
Prior art keywords
dust
desulfurizing agent
contg
desulfurization
cas
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
JP12149080A
Other languages
Japanese (ja)
Inventor
Chitose Shiotani
Kouji Ookumasumi
Koji Ebihara
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
Sumitomo Metal Industries 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 Sumitomo Metal Industries Ltd filed Critical Sumitomo Metal Industries Ltd
Priority to JP12149080A priority Critical patent/JPS5747808A/en
Publication of JPS5747808A publication Critical patent/JPS5747808A/en
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C1/00—Refining of pig-iron; Cast iron
    • C21C1/02—Dephosphorising or desulfurising
    • C21C1/025—Agents used for dephosphorising or desulfurising

Abstract

PURPOSE:To regenerate sulfide-contg. dust produced by the desulfurization of hot iron with a Ca-base desulfurizing agent at the outside of a furnace as a desulfurizing agent by treating the dust with hot waste gas contg. CO2 and water from a limestone roasting furnace, etc. to decompose the sulfuide. CONSTITUTION:When hot iron is desulfurized with a Ca-base desulfurizing agent such as CaC2, CaF2 and CaO at the outside of a furnace, dust contg. unreacted CaO, CaF2 and sulfide such as CaS is recovered with a dust collector. Since the dust can not be used as a desulfurizing agent as it is, the dust is charged into a fluidized bed reactor and reacted with hot waste gas contg. CO2 and water from a limestone roasting furnace, etc. to decompose the CaS in the dust into CaO, etc. S is released as H2S. Thus, the CaS, etc. in the dust are removed, and the dust is regenerated as a desulfurizing agent.
JP12149080A 1980-09-01 1980-09-01 Regenerating method for dust after desulfurization of hot iron Pending JPS5747808A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12149080A JPS5747808A (en) 1980-09-01 1980-09-01 Regenerating method for dust after desulfurization of hot iron

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12149080A JPS5747808A (en) 1980-09-01 1980-09-01 Regenerating method for dust after desulfurization of hot iron

Publications (1)

Publication Number Publication Date
JPS5747808A true JPS5747808A (en) 1982-03-18

Family

ID=14812448

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12149080A Pending JPS5747808A (en) 1980-09-01 1980-09-01 Regenerating method for dust after desulfurization of hot iron

Country Status (1)

Country Link
JP (1) JPS5747808A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4698219A (en) * 1983-10-11 1987-10-06 Lummus Crest, Inc. Treatment of waste from iron ore reduction
JP2009154103A (en) * 2007-12-27 2009-07-16 Yunikkusu:Kk Treatment method of waste liquid from sodium hydroxide treatment of aluminum material and method of manufacturing product derived from this waste liquid

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4698219A (en) * 1983-10-11 1987-10-06 Lummus Crest, Inc. Treatment of waste from iron ore reduction
JP2009154103A (en) * 2007-12-27 2009-07-16 Yunikkusu:Kk Treatment method of waste liquid from sodium hydroxide treatment of aluminum material and method of manufacturing product derived from this waste liquid

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