Drop Generation due to an Impinging Jet and the Effect of Bottom Blowing in the Steelmaking Vessel

Abstract

Experimental results of drop generation in a laboratory model water bath with top blowing and combined blowing are given. It was found that with top blowing alone two different mechanisms of drop generation exist, each having its own characteristic drop generation rate. The two mechanisms, identified by high speed film analysis, are shown to be a function of the blowing rate. Bottom blowing is shown to significantly increase drop generation rate and that the increase is caused by the interaction of the top blowing and the bottom blowing in the impingement zone, and not by the bottom blowing as such. Drop size distribution generated by a gas jet impinging on a liquid surface is normal. Mean drop size is increased by the introduction of bottom blowing.