Carbothermic reduction behavior of FeS in the presence of CaO during microwave irradiation

Ahmadreza Amini, Takayuki Maeda, Ko ichiro Ohno, Kazuya Kunitomo

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    4 Citations (Scopus)

    Abstract

    Carbothermic reduction of FeS in the presence of CaO was experimentally studied by employing a multi-mode microwave generator at 1 050 W and 2.45 GHz as an external heat source to mitigate CO2 and SO2 emissions. According to XRD analysis, an ion exchange reaction between FeS and CaO was initiated at temperatures lower than 645°C and progressed by a further heating to 850°C without any evidence for the onset of a reduction reaction. Detection of Fe phase in the XRD pattern of sample heated to 920°C and existence of CO/CO2 in the off-gas during microwave treatment demonstrated that the reduction reaction initiates at ca. 850°C. It was found that the onset of reduction reaction promotes the ion exchange reaction by FeO consumption via reduction to Fe. Moreover, optical microscope and SEM-EDX observations showed that carbon can be absorbed by metallic iron to make molten iron particles at 1 290°C.

    Original languageEnglish
    Pages (from-to)672-678
    Number of pages7
    Journalisij international
    Volume59
    Issue number4
    DOIs
    Publication statusPublished - Apr 2019

    All Science Journal Classification (ASJC) codes

    • Mechanics of Materials
    • Mechanical Engineering
    • Metals and Alloys
    • Materials Chemistry

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