Thermodynamic Analysis of Carbothermic Reduction of Electric Arc Furnace Dust

Qing Ye, Zhiwei Peng, Lei Ye, Liancheng Wang, Robin Augustine, Joonho Lee, Yong Liu, Mudan Liu, Mingjun Rao, Guanghui Li, Tao Jiang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Electric arc furnace (EAF) dust is a kind of secondary resource which contains multiple metallic elements, including Fe, Mn and Cr. Pyrometallurgical processes for recovering metal elements from EAF dust have been investigated for many years although they are suffered from high energy consumption due to the spinel-structured components of EAF dust. In this study, the thermodynamic analysis of carbothermic reduction of EAF dust was performed. The main components of EAF dust were magnetite (Fe 3 O 4 ), hausmannite (Mn 3 O 4 ) and chromate spinel (FeCr 2 O 4 ). The gangue minerals were mainly composed of magnesium silicates. The thermodynamic analysis indicated that magnetite and hausmannite can be reduced to metallic iron and MnO, respectively. Meanwhile, the chromate spinel will be reduced to chromium oxide and then to form CaCr 2 O 4 . The results also demonstrated that the gangue components can promote the separation of Fe and Cr, agreeing well with the experimental results.

Original languageEnglish
Title of host publication10th International Symposium on High-Temperature Metallurgical Processing, 2019
EditorsDean Gregurek, Tao Jiang, Zhiwei Peng, Rafael Padilla, Baojun Zhao, Onuralp Yücel, Ender Keskinkilic, Jiann-Yang Hwang, Jerome P. Downey
PublisherSpringer International Publishing
Pages117-124
Number of pages8
ISBN (Print)9783030059545
DOIs
Publication statusPublished - 2019 Jan 1
Event10th International Symposium on High-Temperature Metallurgical Processing held at the TMS Annual Meeting and Exhibition, 2019 - San Antonio, United States
Duration: 2019 Mar 102019 Mar 14

Publication series

NameMinerals, Metals and Materials Series
ISSN (Print)2367-1181
ISSN (Electronic)2367-1696

Conference

Conference10th International Symposium on High-Temperature Metallurgical Processing held at the TMS Annual Meeting and Exhibition, 2019
CountryUnited States
CitySan Antonio
Period19/3/1019/3/14

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Keywords

  • Carbothermic reduction
  • EAF dust
  • Ferrite
  • Thermodynamic analysis

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Energy Engineering and Power Technology
  • Mechanics of Materials
  • Metals and Alloys
  • Materials Chemistry

Cite this

Ye, Q., Peng, Z., Ye, L., Wang, L., Augustine, R., Lee, J., Liu, Y., Liu, M., Rao, M., Li, G., & Jiang, T. (2019). Thermodynamic Analysis of Carbothermic Reduction of Electric Arc Furnace Dust. In D. Gregurek, T. Jiang, Z. Peng, R. Padilla, B. Zhao, O. Yücel, E. Keskinkilic, J-Y. Hwang, & J. P. Downey (Eds.), 10th International Symposium on High-Temperature Metallurgical Processing, 2019 (pp. 117-124). (Minerals, Metals and Materials Series). Springer International Publishing. https://doi.org/10.1007/978-3-030-05955-2_11