Converter steelmaking process

Details Converter steelmaking process Converter steelmaking process

C - Chemistry, Metallurgy

21

C

53/83

C21C 5/32 (2006.01) C21C 5/35 (2006.01)

Patent

CA 1148746

ABSTRACT OF THE DISCLOSURE An improved converter steelmaking process that achieves a great increase in the refining capability of top-blown oxygen is provided. The process applies to an oxygen top-blowing converter that also permits bottom blowing of gas and it is characterized by supplying oxygen from a top-blowing lance and a bottom-blowing nozzle substantially throughout the refining operation, with 2 vol% to less than 17 vol% of a predetermined total oxygen flow rate being supplied from the bottom-blowing nozzle whereas the remaining part of oxygen is blown onto the surface of the hot metal from the top-blowing lance.

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