Effect of TiO2 during Oxidation Roasting Process of Pellet: Kinetic Mechanism and Microstructure

• DOI: 10.1002/srin.202300435
• Publication Date: 2023-12-06T18:18:10Z
• Authors: Jinge Feng; Jue Tang; Xiaoai Wang; Mansheng Chu; Zichuan Zhao; Zhenggen Liu; Lanjie Li
• Keywords: Roasting; Pellet

This study investigates the effect of TiO 2 on oxidation kinetic mechanism iron ore concentrate under nonisothermal conditions. Based fact that iron‐containing materials are mainly smelted in form pellets, microstructure evolution pellets with different additions during is studied to verify accuracy analysis results. The results show reaction model describing at stages I and II. increase increases E worsens conditions phenomenon caused by Fe–Ti solid solution embedded hematite particles hindering recrystallization large‐scale crystal bridge connection hematite. fluctuation amplitude apparent activation energy ( ) II 23.6112 19.508 kJ mol −1 , respectively. Furthermore, stage III corresponds diffusion model, decreases improves It due loose structure facilitating internal gases. 5.07 III.