Abstract: In order to improve the utilization of lime and reduce the aggregation behavior of desulfurization flux during the mechanical stirring of hot metal, the flow behavior in the vessel with different numbers of baffles was investigated by physical simulation and numerical simulation. Results showed that the vortex was inclined, the increased height of fluid level was decreased and the tangential movement of fluid was changed after the addition of baffle in the vessel. The aggregation of flux was reduced effectively and the number of particles entrained into the water increased by 10 times during stirring in the vessel with two baffles compared with that in the normal vessel. The velocity and turbulent kinetic energy in the hot metal could be ensured in the vessel with two baffles. It indicated that there was a good kinetics condition of desulfurization in hot metal.

Key words: baffle, mechanical stirring, physical simulation, numerical simulation