Qiang Zhang, Yongsheng Sun, Yuexin Han, Yanjun Li, and Peng Gao, Review on coal-based reduction and magnetic separation for refractory iron-bearing resources, Int. J. Miner. Metall. Mater.,(2021). https://doi.org/10.1007/s12613-021-2408-x
Cite this article as:
Qiang Zhang, Yongsheng Sun, Yuexin Han, Yanjun Li, and Peng Gao, Review on coal-based reduction and magnetic separation for refractory iron-bearing resources, Int. J. Miner. Metall. Mater.,(2021). https://doi.org/10.1007/s12613-021-2408-x
Invited Review

Review on coal-based reduction and magnetic separation for refractory iron-bearing resources

+ Author Affiliations
  • Received: 22 September 2021Revised: 28 December 2021Accepted: 28 December 2021Available online: 30 December 2021
  • The application of coal-based reduction in the efficient iron recovery from refractory iron-bearing resources is comprehensively reviewed. Currently, the development and beneficiation of refractory iron-bearing resources has attracted increasing attention. However, the effect of iron recovery by traditional beneficiation methods is unacceptable. The coal-based reduction and magnetic separation is proposed, which adopts coal as the reductant to reduce the iron oxides to metallic iron below the melting temperature. The metallic iron particles aggregate and grow, and the particle size continuously increases to be suitable for magnetic separation. The optimization and application of coal-based reduction have been abundantly researched. A detailed literature study on coal-based reduction is performed from the perspectives of thermodynamics, reduction kinetics, growth of metallic iron particles, additives, and application. The coal-based reduction industrial equipment can be developed based on the existing pyrometallurgical equipment rotary hearth furnace and rotary kiln, which is introduced briefly. However, the coal-based reduction is characterized by high carbon dioxide emissions, high energy consumption and high pollution. The development and application of coal-based reduction is expectedly hindered in the future. Technological innovation aiming at decreasing carbon dioxide emissions is a new trend of green and sustainable development of the steel industry. At present, substituting the coal with hydrogen for the iron oxides reduction is promising.

  • loading
  • 加载中

Catalog

    通讯作者: 陈斌, bchen63@163.com
    • 1. 

      沈阳化工大学材料科学与工程学院 沈阳 110142

    1. 本站搜索
    2. 百度学术搜索
    3. 万方数据库搜索
    4. CNKI搜索

    Share Article

    Article Metrics

    Article Views(445) PDF Downloads(306) Cited by()
    Proportional views

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return