CFD, a design tool for a new hot metal desulfurization technology

摘要

This paper considers CFD modelling of desulfurization carried out in a large vessel containing hot metal covered by a thick synthetic slag layer. During nitrogen stirring sulfur transfers to the slag. Sulfur ions in the slag have to be removed by oxidation (O_2 lance) to restore slag desulfurization capability. The mac- roscopic metallurgical reactions occurring during hot metal desulfurization and slag regeneration are studied by kinetic laws for permanent and transient phase contact. Mechanical metal-slag interactions are calculated by shear stress considerations for stratified flows.