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Centre de Recherches Metallurgiques CRM ASBL
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Centre de Recherches Metallurgiques CRM ASBL
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Application filed by Centre de Recherches Metallurgiques CRM ASBLfiledCriticalCentre de Recherches Metallurgiques CRM ASBL
Publication of FR2147046A1publicationCriticalpatent/FR2147046A1/en
Application grantedgrantedCritical
Publication of FR2147046B1publicationCriticalpatent/FR2147046B1/fr
C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
C21C5/28—Manufacture of steel in the converter
C21C5/30—Regulating or controlling the blowing
C21C5/34—Blowing through the bath
Abstract
Powdered lime is contained in O2 or an O2-rich oxidant gas blown through the central tuyere in the convertor bottom for at least part of refining and the outer tuyere injects a protective fluid to cool the gas glast. The protective fluid is pref. a hydrocarbon or pressurised H2O.
FR7225046A1971-07-231972-07-11Refining melts - by bottom blown converter with two coaxial tuyeres
GrantedFR2147046A1
(en)
Method of feeding mixture of enriched or unenriched blast and atomized liquid fuel into the shaft furnace space and shaft furnace tuyere for making the said method