DE3019899

In a method of steelmaking in a basic oxygen furnace, a bottom- blowing gas predominantly comprising carbon dioxide is introduced into a molten metal through at least one nozzle provided in the bottom or side wall of a furnace at least partly during the period of time from the beginning of top blowi...

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Main Authors HIRATA, TAKEYUKI, IBARAKI, JP, MARUKAWA, KATSUKIYO, HIROKI, NOBUYOSHI, IBARAKI, JP, TOZAKI, YASUYUKI, MASUDA, SEIICHI, HYOGO, JP, KAJIMOTO, TSUTOMU, WAKAYAMA, IBARAKI, JP, ANEZAKI, SYOJI, IBARAKI, JP, UEDA, MINORU, YAMAZAKI, ISAO
Format Patent
LanguageEnglish
Published 30.04.1986
Edition4
Subjects
CHEMISTRY
METALLURGY
METALLURGY OF IRON
PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OFWROUGHT-IRON OR STEEL
TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
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Summary:In a method of steelmaking in a basic oxygen furnace, a bottom- blowing gas predominantly comprising carbon dioxide is introduced into a molten metal through at least one nozzle provided in the bottom or side wall of a furnace at least partly during the period of time from the beginning of top blowing with oxygen to the tapping of the melt, and the flow rate of the bottom- blowing gas is 1/200-9/100 the rate of oxygen impinged upon the melt through a lance. The bottom-blowing gas preferably composed of flue gas which has been passed through a dust collector and burner.
Bibliography:Application Number: DE19803019899