ORAL

SESSION: IronMonAM-R10	5th Intl. Symp. on Advanced Sustainable Iron and Steel Making
Mon Oct, 23 2017	Room: Maria Mercedes & Maria Beatriz
Session Chairs: Tateo Usui; Mery-Cecilia Gomez-Marroquin; Session Monitor: TBA

11:00: [IronMonAM01] Plenary
Progress in Gaseous Reduction Models for Iron Ore Agglomerates
Tateo Usui¹ ; Masaaki Naito² ; Hiroshi Kamiya³ ; Hideki Ono⁴ ; Yasuhiro Nakamuro⁵ ; Hirokazu Konishi⁴ ; Hirotoshi Kawabata⁴ ; Tomoyuki Mizukoshi⁶ ; Masahiro Nishi⁷ ; Paulo Assis⁸ ; ¹Osaka University, Ibaraki, Japan; ²Nippon Steel & Sumikin Technology Co., Ltd., Futtsu, Japan; ³Honda Motor Co., Ltd., Tokyo, Japan; ⁴Osaka University, Suita, Japan; ⁵Naniwa Pump Mfg. Co., Ltd., Osaka, Japan; ⁶Osaka Research Institute of Industrial Science and Technology, Izumi, Japan; ⁷Izumi Industry. Inc., Hakuigun, Japan; ⁸UFOP (Federal University of Ouro Preto) / REDEMAT, Ouro Preto, Brazil;
Paper Id: 121 [Abstract]

In reaction models for gaseous reduction of iron ore agglomerates, the formations of both unreacted-core shrinking (UCS) model for one interface, UCS model for three interfaces, and the developments of multi-stage zone-reaction models with and without considering solid-state diffusion are summarized; these models are used mainly for pellets, but are sometimes used for sinter. UCS model for six interfaces in consideration of quaternary calcium ferrite reduction process is newly developed for sinter. Comparisons of these reaction models for pellets and sinter are carried out by using experimental data on gaseous reduction of these iron ore agglomerates.