Iron oxide recovery from fayalite

  • Junhong Chen University of Science and Technology Beijing
  • Wenjun Mi University of Science& Technology Beijing
  • Haiyang Chen University of Science& Technology Beijing
  • Bin Li University of Science& Technology Beijing
  • Kuo-Chih Chou University of Science& Technology Beijing
  • Xinmei Hou University of Science& Technology Beijing, Beijing 100083, China

Abstract


Fayalite (Fe2SiO4) as the main composition of copper slag contains abundant Fe2+. Reasonable application of fayalite is of great interest for comprehensive use of mineral resource and reduction of environmental problems. In this work, the oxidation behavior of fayalite in water vapor was investigated. Fayalite was decomposed into magnetite (58.8 wt%), hematite (21.6 wt%) and silica (19.6 wt%) at 1000 °C for 40 min under water vapor condition. Compared with the result obtained in dry air, water vapor could promote fayalite to transform into magnetite by decreasing oxygen fugacity. In addition, the iron oxide product was further enriched via alkaline cleaning in 1 mol/L NaOH. As for the gas product, the hydrogen production capacity reached 24.41 mL/g when exposed to 50 vol% water-50 vol% Ar at 1000°C for 40 min.

References

(1) Name: Zuotai Zhang

Acedamic dgree: Doctor

Institution: Peking Univerisity, China

Email address: zuotaizhang@pku.edu.cn

Expert in this field

(2) Name: Klaus G. Nickel,

Acedamic dgree: Doctor

Institution: Universität Tübingen, Germany,

Email address: klaus.nickel@uni-tuebingen.de

Expert in this field

(3)Name: Zhaohui Huang

Acedamic dgree: Doctor

Institution:China University of Geosciences(Beijing),China

Email address: huang118@cugb.edu.cn

Expert in this field

Published
2017/12/29
How to Cite
Chen, J., Mi, W., Chen, H., Li, B., Chou, K.-C., & Hou, X. (2017). Iron oxide recovery from fayalite. Journal of Mining and Metallurgy, Section B: Metallurgy, 54(1), 1-8. Retrieved from https://aseestant.ceon.rs/index.php/jmm/article/view/11635
Issue
Vol. 54 No. 1 (2018)
Section
Original Scientific Paper

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