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

    2 Citations (Scopus)

    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 publicationCelebrating the Megascale
    Subtitle of host publicationProceedings of the Extraction and Processing Division Symposium on Pyrometallurgy in Honor of David G.C. Robertson - Held During TMS 2014 143rd Annual Meeting and Exhibition
    PublisherMinerals, Metals and Materials Society
    Pages347-355
    Number of pages9
    ISBN (Print)9781118889619
    DOIs
    Publication statusPublished - 2014
    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

    Publication series

    NameTMS Annual Meeting

    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
    Country/TerritoryUnited 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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