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Reduction Kinetics Analysis of Fe2O3 in the Case of Carbon Precipitation

  • Yangxin Cheng
  • Liangying WenEmail author
  • Jiao Cao
  • Feng Lu
  • Jian Xu
  • Shengfu ZhangEmail author
Conference paper
  • 48 Downloads
Part of the The Minerals, Metals & Materials Series book series (MMMS)

Abstract

The reduction kinetics of Fe2O3 (purity 99.9%) in the case of carbon precipitation is investigated using the isothermal thermogravimetric (TG) analysis controlled gas-base reduction. The TG curves are recorded in the experimental process, and the conversion rate, reaction rate, reduction rate, and other parameters are calculated through experimental data. The results show that the carbon precipitated evolution process from CO is accelerated in the FeO → Fe stage, and the sample weight increased obviously. Based on the lnln method, the reaction mechanism function is G(α) = [−ln(1 − α)]1/2, and the reaction activation energy is 43.4 kJ/mol.

Keywords

Gas-base reduction Carbon precipitated Reduction kinetics 

Notes

Acknowledgements

This work is supported by the National Natural Science Foundation Project of China (51374263, 51674052, 91634106). The authors are grateful for the Chongqing Research Program of Basic Research and Frontier Technology (cstc2018jcyjAX0003).

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Copyright information

© The Minerals, Metals & Materials Society 2020

Authors and Affiliations

  1. 1.School of Materials Science and EngineeringChongqing UniversityChongqingChina
  2. 2.Chongqing Key Laboratory of Vanadium-Titanium Metallurgy and Advanced MaterialsChongqing UniversityChongqingChina

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