Refining of High-Carbon Steel and Reduction of CO₂ Emissions by Using Lignite Upgraded Coal Briquettes

Abstract

This study investigated the use of sustainable coal (lignite) that can simultaneously satisfy three requirements: [1] Environmental issues (CO₂), particularly Carbon dioxide Capture and Utilization (CCU) that reduces CO₂; [2] Resource issues, particularly Enhancement of dephosphorization function in the refining process; and [3] Enhancement of refining high-carbon steel. This study confirmed that use in the steel making process of lignite upgraded coal briquettes gives possibility to functionally differentiate the reaction site of decarbonization and dephosphorization and to reduce CO₂ emissions.