Advertisement

JOM

, Volume 60, Issue 10, pp 35–39 | Cite as

The microwave processing of electric arc furnace dust

  • Xiang Sun
  • Jiann-Yang HwangEmail author
  • Xiaodi Huang
Pyrometallurgical Processing Research Summary

Abstract

An ideal treatment for electric arc furnace (EAF) dust is to cost-effectively process the dust on site to generate high-value products. Microwave heating has the potential to be the ideal approach. In this study, testing was conducted to evaluate the feasibility of treating EAF dust under microwave radiation to produce iron metal and zinc metal instead of zinc oxides as co-products. Microwave processing time and fixed carbon addition amounts were investigated. Different carbons with high fixed carbon contents were also tested and no significant influence was observed. Products of both metallic zinc-rich particles and metallic iron-rich residuals exhibited high purities, which satisfy recycling feedstock requirements.

Keywords

Metallic Iron Petroleum Coke Zinc Ferrite Iron Product Zinc Metal 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    A.D. Zunkel, “Recovering Zinc and Lead from the Electric Arc Furnace Dust: A Technology Status Report,” Proceeding of the TMS Fall Extraction and Processing Conference (Warrendale, PA: TMS, 2000), pp. 227–236.Google Scholar
  2. 2.
    M.C. Mantovani, C. Takano, and P.M. Büchler, “EAF and Secondary Dust Characterization,” Ironmaking and Steelmaking, 31 (2004), pp. 325–332.CrossRefGoogle Scholar
  3. 3.
    K. Mager et al., “Recovery of Zinc Oxide from Secondary Raw Materials: New Developments of the Waelz Process,” Recycling of Metals and Engineered Materials (Warrendale, PA: TMS, 2000), pp. 329–344.Google Scholar
  4. 4.
    P.C. Holloway and T.H. Etsell, “Mineralogical Transformations in Altasteel Electric Arc Furnace Dust Roasted with Na2CO3 and Secondary Ferrite-Forming Additives,” Journal of Minerals & Materials Characterization & Engineering, 7(1) (2007), pp. 1–26.Google Scholar
  5. 5.
    T.T. Chen, J.E. Dutrizac, and G. Poirier, “Mineralogical Characterization of Waelz Kiln Products,” Fifth International Symposium on Waste Processing and Recycling in Mineral and Metallurgical Industries (Hamilton, Ontario: MetSoc, 2004), pp. 681–696.Google Scholar
  6. 6.
    D. Mishra et al., “Zinc Recovery from EAF Dust through Thermal Reduction,” EPD Congress (Warrendale, PA: TMS, 2002), pp. 349–357.Google Scholar
  7. 7.
    J.Y. Hwang and X. Huang, “New Steel Production Technology with Microwave and Electric Arc Heating,” Advanced Processing of Metals and Materials, Volume 5—New, Improved and Existing Technologies: Iron and Steel and Recycling and Waste Treatment, ed. F. Kongoli and R.G. Reddy (Warrendale, PA: TMS, 2006), pp. 251–261.Google Scholar
  8. 8.
    Z. Xu et al., “Quantitative Determination of Metallic Iron Content in Steel-Making Slag,” Journal of Minerals and Materials Characterization and Engineering, 2(1) (2003), pp. 65–70.Google Scholar
  9. 9.
    D. Ma and W-K. Lu, “A Thermodynamic Study for Recovery of Zinc from EAF Dusts by Pyrometallurgical Processes,” Proceedings of the International Symposium on Resource Conservation (Toronto, Canada: Canadian Institute of Mining, 1994), pp. 35–45.Google Scholar

Copyright information

© TMS 2008

Authors and Affiliations

  1. 1.Department of Materials Science and EngineeringMichigan Technological UniversityHoughtonUSA

Personalised recommendations