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Behavior of Reduction and Carburization of EAF Dust and Mill Scale  

Hwang Ho-Sun (대원특수강(주) 기술연구소)
Chung Uoo-Chang (부산대학교 신뢰성 연구센터)
Chung Won-Sub (부산대학교 재료공학부)
Chung Won-Bae (부산대학교 재료공학부)
Publication Information
Resources Recycling / v.12, no.5, 2003 , pp. 50-56 More about this Journal
Abstract
To be recycled iron and heat source in EAF, EAF dust and mill scale generated from steelmaking plant should be made to iron carbide. Behavior of reduction and carburization in EAF dust and mill scale is studied to get fundamental data. EAF dust and mill scale are carburized at $650^{\circ}C$ by 100% CO gas. The carbon content of iron carbide(about 9 wt,% C) is higher than that of cementite without free carbon. The 1.2 times of calculated carbon content is suitable for reduction of EAF dust. The reduction temperature is appropriate to $900^{\circ}C$ in EAF dust and $1000^{\circ}C$ in mill scale. The carburization rate of mill scale are faster than those of EAF dust. The composition of super iron carbide is almost $Fe_2$C.
Keywords
EAF dust; mill scale; reduction and carburization behavior; super iron carbide(SIC);
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