Optimum Utilization of Hot DRI: An Innovative Approach to Integration With Steelmaking Processes

摘要

Gas-based, shaft furnace-based direct reduction has evolved successfully over the course of the past four decades. Some of the technology enhancements to gas-based direct reduction during the evolutionary period include larger-capacity shaft furnaces, in-situ reforming, increased heat recovery, improved reformer catalysts and hot briquet-ting. The most recent improvements include increased reduction temperature and energy efficiency, as well as other process/equipment improvements that will be implemented in the modules currently under construction and will have corresponding benefits. While there is still room for further optimization of gas-based DR technology and greater productivity through optimization of the current state-of-the-art features, new and significant advancements will be increasingly difficult to implement.