抄録
In the steelmaking processes such as the desulphurization process, it's requested to disperse low density particles in the reaction vessels quickly and uniformly. In mechanical agitation, when the impeller is placed at an offset position, an inclined vortex is generated under some specific conditions and it increases the agitation efficiency significantly. In the present study, we have investigated the effect of low density particles on the inclined-vortex formation under mechanical offset agitation. As the number of low density particles on the bath surface increases, the vortex formation becomes difficult. Empirical equations are proposed for the vortex initiation time and the vortex arrival time to the impeller.
