Reduction Mechanism of Fe<sub>x</sub>O — Graphite Composite under Elevating Temperature

DOI Web Site 被引用文献2件 参考文献9件 オープンアクセス

抄録

Since iron ore-carbon composite permits rapid reduction reaction, its utilization is an effective method to reduce carbon dioxide emissions in ironmaking process. Major iron ores consist of Fe2O3, Fe3O4, and FeOOH, which require several reduction steps through FexO to form metallic iron. In this study, FexO, which has a certain solid solution range, was highlighted as an alternative iron source for the composite. It is because FexO can be produced by a pre-reduction process of iron ores although it is not a major component of natural ores. The effect of the oxygen concentration of the FexO and the mix-grinding time of the iron oxide and carbonaceous material on the reduction behavior of the composite was examined.<br>The composite samples of FexO with different oxygen concentrations, i.e., different x value and graphite were prepared and heated up to 1200°C under inert gas flow. The value of reduction degree was calculated from the concentration of gas generated from the composite. Reduction temperature decreases with increasing x value and the grinding time. In the case of a 3.6 ks-grinding, reduction reaction of the composite with a low x value proceeded homogeneously, while reduction of that with a high x value proceeded topochemically.

収録刊行物

被引用文献 (2)*注記

もっと見る

参考文献 (9)*注記

もっと見る

関連プロジェクト

もっと見る

キーワード

詳細情報 詳細情報について

問題の指摘

ページトップへ