Valorization of electrical arc furnace oxidizing slag

Joonho Lee, Sung Beom An, Minsoo Shin, Ki Joo Sim

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

Abstract

Valorization of the electrical arc furnace oxidizing slag by coke was carried out by the reduction of iron oxide in the slag. Since the reduction of iron oxide by solid carbon is an endothermic reaction, supply of heat energy is required. In addition, slag has a low thermal conductivity; traditional fuel injection is not suitable for this reaction. Microwave can be used to supply heat energy to the system. Commercial oxidizing slag was reduced by coke under the microwave irradiation (1.7 kW, 2.45 GHz). The maximum recovery ratio of iron was 87%. In addition, slag composition modification was attempted to use the remaining slag for a mixture in cement clinker. Free-CaO in the slag was successfully suppressed, and the use of the remaining slag as a potential mixture was confirmed.

Original languageEnglish
Title of host publicationTMS Annual Meeting
PublisherMinerals, Metals and Materials Society
Pages347-355
Number of pages9
ISBN (Print)9781118889619
Publication statusPublished - 2014 Jan 1
EventCelebrating the Megascale: Extraction and Processing Division Symposium on Pyrometallurgy in Honor of David G.C. Robertson - TMS 2014 143rd Annual Meeting and Exhibition - San Diego, CA, United States
Duration: 2014 Feb 162014 Feb 20

Other

OtherCelebrating the Megascale: Extraction and Processing Division Symposium on Pyrometallurgy in Honor of David G.C. Robertson - TMS 2014 143rd Annual Meeting and Exhibition
CountryUnited States
CitySan Diego, CA
Period14/2/1614/2/20

Keywords

  • Electrical arc furnace
  • Oxidizing slag
  • Recovery of iron

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Metals and Alloys

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  • Cite this

    Lee, J., An, S. B., Shin, M., & Sim, K. J. (2014). Valorization of electrical arc furnace oxidizing slag. In TMS Annual Meeting (pp. 347-355). Minerals, Metals and Materials Society.