Abstract: An ultrasonic nozzle for use in metallurgical installations, in particular for the top blowing of oxygen in a Basic Oxygen Furnace (BOF) or an electric arc furnace (EAF), has a convergent portion and a divergent portion, which are adjacent to each other at a nozzle throat, wherein the ultrasonic nozzle is defined by the following group of nozzle forms in a respective design case: Radius in Volumetric flow narrowest cross- Outlet max. nozzle Pressure rate V0 in Nm/ section r* in mm radius re length 1 p0 in bar min (throat) in mm in mm 4 20 12.0 14.0 ?50 ± 20 4 200 39 44.0 160 ± 20 14 20 6 10.0 ?50 ± 20 14 200 21 33.0 ?160 ± 20.

Abstract: The invention relates to a supersonic nozzle for use in metallurgical installations, in particular for the top blowing of oxygen in a Basic Oxygen Furnace (BOF) or an electric arc furnace (EAF), comprising a convergent portion and a divergent portion, which are adjacent to each other at a nozzle throat (DK), wherein the supersonic nozzle is defined by the following group of nozzle forms in the respective design case thereof: (T1).