2012/1/5 · In both cases, when the hot metal flows down to the torpedo car or ladle, the added flux is mixed with the hot metal, because of the potential energy difference, and the reaction occurs efficiently. In this approach, various kinds of Fe oxide are utilized, e.g., iron ore, sintered ore, and recycled BOF dust, and in some cases, to prevent slag foaming, lime or sintered ore is added to control