METHOD AND DEVICE FOR VARYING THE SUBSTANCE COMPOSITION IN METAL MELTS AND IN PARTICULAR FOR THE DESULFURIZING OF PIG IRON

摘要

A method for varying the substance composition in metal melts and in particular for desulfurizing pig iron where the contact surfaces of the reacting surfaces of the melt is enlarged by stirring, comprises producing a flow of metal and simultaneously stirring the flow to produce a plurality of eddies simultaneously at several locations along the flow path. The apparatus includes a housing mounting a plurality of rotatable stirrers with agitator elements at the lower end which are adapted to dip into the melt and be located between the slag layer and the melt in the bath. The apparatus includes a heat insulated cover which is adapted to overlie the trough and which includes openings for the passage of the stirrers therethrough to position them at spaced locations along the length of the flow path in the trough. The metallurgical melt system includes means for tapping the furnace at a plurality of locations for flow along troughs along which the agitator elements are positioned.