|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Characterization of Minerals, Metals, and Materials
||Reduction Behavior of Ternary Calcium Ferrites for CaO-Fe2O3-MgO System
||Senwei Xuan, Xuewei Lv, Kai Tang, Chengyi Ding, Gang Li, Chenguang Bai
|On-Site Speaker (Planned)
Calcium ferrite is the significant liquid phase for fluxed sinters, which are main iron-bearing materials charged into a blast furnace. The isothermal reduction kinetics of CF and CF8M (n(CaO):n(Fe2O3)=1, wt%(MgO)=8) with 30% CO and 70% N2 gas mixtures at 1123, 1173, and 1223 K were investigated through thermogravimetric analysis in this study. The reduction processes of CF and CF8M are mainly expressed as a typical two-stage reaction. Sharp analysis indicates that CF and CF8M reduction is expressed by the Avrami–Erofeev equation presenting a 2D shrinking layer reaction. The apparent activation energy values of CF and CF8M reduction are 46.9 and 31.8 kJ/mol individually based on model-free method.
||Planned: None Selected