FUTURE GREEN STEELMAKING TECHNOLOGIES

摘要

Use of the new direct reduction processes, natural gas-based or coal-based, will improve greenhouse gas emissions and lower steelmaking energy requirements while allowing steelmakers to meet end product quality requirements. Using steel mill wastes as feedstock will assist steelmakers to achieve zero waste status. This paper compares carbon dioxide (CO_2)/carbon (C) emissions and energy requirements for various ironmaking/steelmaking routes, from the conventional blast furnace (BF)/BOF and MIDREX~R Direct Reduction Process direct reduced iron (DRI)/hot briquetted iron (HBI)/EAF routes to the new innovative Alternative Iron Sources (AISs)/steelmaking routes such as the FASTMET Process, the ITmk3 process, FASTEEL, FASTOx, COREX and HIsmelt. Definitions of the process technologies considered herein can be found elsewhere in these proceedings in the paper titled "Influence of AIS Chemistry on EAF Steelmaking.