Quantitative analysis of the emulsification phenomena, in top and combined blowing processes, was carried out using a two dimensional cold model. The effect of lance height and/or position of bubblers, located at the bottom of the vessel, on the quantity of metal droplets entrapped in the emulsion was studied. It was found that, in the absence of bottom bubbling the lance height had a considerable effect on the degree of emulsification, while under conditions of combined blowing maximum metal emulsion formation can be achieved when the bubblers are located underneath the impingement zone. The increase in entrapment can be as much as an order of magnitude greater than that produced by top blowing only.
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Turner et al. (1987) studied this question.
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