DISCUSSION ON COKE PROPORTIONING IN BLAST FURNACE LUMPY ZONE CONSIDERING BOTH CSR AND ORE/COKE COUPLING REACTION

摘要

Adding nut coke or high reactivity coke (HRC) can promote ore/coke coupling reaction in the lumpy zone of blast furnace (BF), thus improving iron ore reduction degree (RD) efficiency. Although lots of works aiming to increase coke strength after reaction (CSR) of HRC are studied, few of them take the reasonable coke proportioning for BF into consideration. Present work firstly compares the RD of iron ore as well as CSR when HRC is mixed in sinter, pellet and lump ore column respectively.