Dynamic dissolution of CO2/H2O(g)-gasified coke by slag containing FeO

• Published in: Ironmaking & steelmaking Vol. 45; no. 9; pp. 821 - 827
• Main Authors: Liu, Yingli, Xue, Qingguo, Wang, Guang, Wang, Jingsong
• Format: Journal Article
• Language: English
• Published: London, England Taylor & Francis 21.10.2018; SAGE Publications
• Subjects: coke; dissolution; gasification; injection coke oven gas-blast furnace; Top gas recycling-oxygen blast furnace; injection coke oven gas-blast furnace; coke; Top gas recycling-oxygen blast furnace; gasification; dissolution
• ISSN: 0301-9233; 1743-2812
• DOI: 10.1080/03019233.2017.1339397

In top gas recycling-oxygen blast furnace (TGR-BF) and injection coke oven gas-blast furnace (COG-BF), lower coke ratio highlight the importance of coke in the melting and dropping zone. To understand the deterioration of coke in lower blast furnace, the dynamic dissolution of CO 2 /H 2 O-gasified coke by slag containing FeO and reaction kinetics were analysed. The results showed that the coke deterioration was more serious in CO 2 than in H 2 O for the same gasification ratio. To understand the internal variation of coke, pore distribution and microstructure of coke were observed using mercury porosimeter and scanning electron microscope (SEM). For the same gasification ratio, pore structure was more uniform in H 2 O than in CO 2 . In addition, the kinetics of coke's reaction with FeO in slag was analysed.