Study on the Effect of Two Angle and Two Flow Oxygen Lance Jet on Molten Pool in Converter

Abstract

Abstract To achieve the smelting effect of low splash in large and medium-sized converters, the jet flow field simulated by compressed air at room temperature is studied by the oxygen lance (OL) jet detection experimental system in this paper. This paper mainly analyzes the variation law of jet velocity at the geometric axis of the OL nozzle and scalar distribution and attenuation of jet isovelocity line at different cross sections. The results show that the oxygen jet cross-section of all OL nozzles gradually expands with the rise of OL position. When the large hole flow ratio is between 55% and 65%, the large hole angle is between 12° and 14° and the small hole angle is between 16° and 18°, therefore the angle of hole plays a significant role in the impact radius. The larger the angle is, the larger the impact radius is. The area of action between jet and molten pool could be enlarged by staggered double-structure six-hole OL.