Lance for blow-refinement in converter

Details Lance for blow-refinement in converter Lance for blow-refinement in converter

C - Chemistry, Metallurgy

21

C

39/105

C21C 5/46 (2006.01) F27D 3/16 (2006.01)

Patent

CA 1293121

ABSTRACT OF THE DISCLOSURE A lance for blow-refinement in a converter comprises a primary nozzle generating a high-velocity, high-pressure primary oxygen jet, and an auxiliary nozzle generating an auxiliary oxygen jet. The auxiliary oxygen jet formed by the auxiliary nozzle has a velocity lower than the speed of sound. The auxiliary nozzle is configured so as to impede but not prevent oxygen flow therethrough. In the preferred construction, deceleration of gas-metal reaction induced by the oxygen jet.

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