Method for producing steel in a top-blown vessel

Details Method for producing steel in a top-blown vessel Method for producing steel in a top-blown vessel

C - Chemistry, Metallurgy

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C

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C21C 5/32 (2006.01) C21C 5/00 (2006.01) C21C 5/35 (2006.01) C21C 7/068 (2006.01)

Patent

CA 1237585

ABSTRACT OF THE DISCLOSURE A method for producing stainless steel in a top-blown molten metal vessel having a hot metal charge to form a bath. The method comprises top blowing from a lance oxygen and/or a mixture of oxygen and inert gas onto or beneath the surface of the bath while introducing a low flow rate inert gas to the bath from beneath the surface thereof during said top blowing. The ratio of oxygen-to-inert gas is decreased progressively during top blowing. The relative flow proportion of top-blown gases and bottom-blown gases remains substantially the same throughout the process.

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