ISIJ International
Online ISSN : 1347-5460
Print ISSN : 0915-1559
ISSN-L : 0915-1559
Regular Article
Observations of the Reduction of FeO from Slag by Graphite, Coke and Coal Char
S. L. TEASDALEP. C. HAYES
Author information
JOURNALS FREE ACCESS

2005 Volume 45 Issue 5 Pages 634-641

Details
Abstract

The reduction of FeO from iron-saturated FeO-CaO-Al2O3-SiO2 slags by graphite, coke and coal char at 1673 K has been investigated using a sessile drop technique. Metallographic analysis of samples quenched from the reaction temperature, and “in situ” observations of the reaction interface, reveal significant differences in the slag/carbon contact, and in the morphologies of the product iron and its composition; these differences were found to depend on the carbon type used in the reduction. In particular it has been shown that, in the case of graphite and coke, liquid Fe-C droplets were rapidly formed at the slag/C interface. Reactions of the slag with coal chars, in contrast, result predominantly in the formation of solid iron. These observations indicate that the reaction pathways, and hence reaction kinetics, are dependent on carbon type.

Information related to the author
© 2005 by The Iron and Steel Institute of Japan
Next article
feedback
Top