Management of DRI Fines to Maximize Iron Yield in the EAF

摘要

Management of direct-reduced iron (DRI) pellet size is critical. The efforts discussed in this paper focus on minimizing generation of subsized pellets and then devising a melting practice that best optimizes recycling of the briquetted DRI fines that remain. An important aspect is the development of a melting practice for recycling the briquetted fines. This entails a pre-melting step, where the briquettes are charged ahead of the DRI feed stage to make use of the hot heel in the furnace.