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REWAS 2019 pp 373-382 | Cite as

Effect of Coal Ratio on Preparation of Si–Ti–Fe Alloy by Carbothermic Reduction with Coal Fly Ash

  • Kun Wang
  • Yan LiuEmail author
  • Song Qi
  • Jun Hao
  • Zhi-he Dou
  • Li-ping Niu
  • Ting-an Zhang
Conference paper
Part of the The Minerals, Metals & Materials Series book series (MMMS)

Abstract

With the development of electric power industry, the discharge of coal fly ash increases year by year. At present, one problem of coal fly ash is low-value utilization. The improper treatment of coal fly ash will also cause harm to air, water, and soil as well as human health. To test a process including high-value utilization and reduction of environmental pollution, a Si–Ti–Fe alloy was prepared in an intermediate frequency induction furnace by carbothermic reduction using coal fly ash as raw material. Coke was used as reducing agent. In this paper, the effect of coal ratio on metal recovery rate, composition, and microstructure was studied. The suitable coal ratio was proposed for future process development which could expand the utilization of coal fly ash.

Keywords

Coal ratio Si–Ti–Fe alloy Coal fly ash Carbothermic reduction 

Notes

Acknowledgements

This work was financially supported by the National Natural Science Foundation of China (Nos. U1402271, U1710257), the National key research and development plan (2017YFC0210403-04).

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Copyright information

© The Minerals, Metals & Materials Society 2019

Authors and Affiliations

  • Kun Wang
    • 1
  • Yan Liu
    • 1
    Email author
  • Song Qi
    • 1
  • Jun Hao
    • 1
  • Zhi-he Dou
    • 1
  • Li-ping Niu
    • 1
  • Ting-an Zhang
    • 1
  1. 1.Key Laboratory of Ecological Metallurgy of Multi-metal Intergrown Ores of Ministry of EducationSpecial Metallurgy and Process Engineering Institute, Northeastern UniversityShenyangChina

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