Abstract:
Gaseous reduction behavior of iron oxide pellets and iron ore sinter with CO and H2 were studied experimentally. In reaction models for gaseous reduction of iron ore agglomerates, the formations of both unreacted-core shrinking (UCS) model for one interface and UCS model for three interfaces and the developments of multi-stage zone-reaction models without and with considering solid-state diffusion are summarized; these models were used mainly for pellets but sometimes used for sinter. UCS model for six interfaces in consideration of quaternary calcium ferrite reduction process was newly developed for sinter. Comparisons of these reaction models for pellets and sinter were carried out by using experimental data on gaseous reduction of these iron ore agglomerates.
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20 T. Usui, H. Konishi, K. Ichikawa, H. Ono, H. Kawabata, Francisco B. Pena, Matheus H. Souza, Alexandre A. Xavier and Paulo S. Assis: Evaluation of Carbonisation Gas from Coal and Woody Biomass and Reduction Rate of Carbon Composite Pellets, Advances in Materials Science and Engineering, Special Issue on Biomass Materials for Metallurgical Applications, Vol. 2018, Article ID 3807609, (2018), pp.1 – 14.
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