A Pilot Trial Investigation of Using Hydrochar Derived from Biomass Residues for EAF Process

BiocarbonBiocarbon will play an important role to achieve a carbonCarbon neutral and sustainable steelSteel industry. In this study, three hydrocharsHydrochar (one type of biocoal produced via the hydrothermal carbonization process) derived from orange peel, green waste, and rice husk were tested in a 10-ton test-bed EAFEAF (electric arc furnace). These hydrocharsHydrochar were added to EAFEAF via injection and top-charge as carburizerCarburizer to substitute anthracite. The obtained liquid slag composition after scrap meltdown is favorable for the desulphrization process. Moreover, a higher carburization yield was achieved by top charging of hydrocharHydrochar into EAFEAF at the beginning of the heat. The final P and S of liquid steelSteel with addition of hydrocharsHydrochar were controlled to acceptable levels. Some perspectives of using hydrocharHydrochar for EAFEAF steelmaking are also presented.