This research work is devoted to the improvement of heat and mass transfer processes in a liquid bath, which are observed in oxygen converters. On the model of the oxygen converter with the upper and lower tuyeres, experiments were conducted to study the modeling of hydrodynamics. By blowing air through the water, the determining parameters of the converter operation were revealed. The results were evaluated by the Student and Fisher criteria. Next, graphs of the dependence of parameters on factors that describe the intensity of purging were constructed. The paper concludes about the rational ratio of the intensity of purging the bath when it is jointly purged from above and below to improve heat and mass transfer processes in a liquid bath.