Influence of Bottom Tuyere Configuration on Bath Stirring in a Top and Bottom Combined Blown Converter

Mathematical and Physical Simulation of a Top Blown Converter

“…The experimental testing methods were the same as that of a paper by Lai et al The study was performed with 1:6 scaled model of a 30 t converter. The temperature effects were not considered since the impact of the temperature on the dynamic pressure of the jets is relatively small .…”

Physical and Mathematical Modeling of Multiphase Flows in a Converter

“…The high mixing efficiency in the converter is largely attributed to stirring effects of the bottom injected gas. Therefore, the effects of various bottom nozzles conditions, [16][17][18][19]24,80,83) gas flow rates and gas supply schemes, 21,22,25,48,140) and combination schemed of top gas and bottom gas 20,26,27,30,78,79,119,141) are studied to optimize the mixing effects in the converter. The velocity distribution inside a 335-ton converter bath as well as the velocity and bubble size distribution in a six plugs 190-ton bottom blown converter with standard bottom stirring are presented in Fig.…”

“…K. Nakanishi et al 9) investigated the mixing rate of molten steel and mass transfer rate between slag and metal in Q-BOP through water model experiments. Extensive studies were also carried out on the stirring behavior andbehavior mixing characteristics in top blown, [10][11][12][13][14][15] bottom blown, [16][17][18][19][20][21][22] as well as combined blown [23][24][25][26][27][28][29] converter at different stages 30) during a heat using water models. However, the transport phenomena in steel bath are so complex that many phenomena cannot be presented by water model experiments such as the compressibility of high speed oxygen, the interaction behavior between different phases, high temperature performance, etc.…”

Industrial Experiment of Steelmaking in a Top‐Bottom‐Side Blown Converter with Slag Splashing Process

“…The stirring effect of bottom gas on converter bath can be enhanced by optimizing the bottom tuyere number and their arrangement positions and bottom gas intensity 3, 4, but it is difficult to further decrease bath mixing time by optimizing the bottom purging process after the mixing time is lowered to a certain extent. Furthermore, converter lining life can be greatly increased by slag splashing process, but the process would result in raise‐up of converter bottom and all the bottom tuyere ends are covered with a layer of slag, which lowers the stirring effect of bottom gas injected through these tuyeres 5.…”