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  • Crystallization Control for Remediation of an FetO-rich CaO-SiO2-Al2O3-MgO EAF Waste Slag
  • 조회 수: 1386, 2015-04-09 15:42:32(2015-04-09)
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    Professor Il Sohn’s research group have sought to lower Fe contents within the electric arc furnace(EAF) waste slag for use in higher value-added ordinary Portland cement. Fe-rich spinel crystal growth in the melts was observed in-situ using a confocal laser scanning microscope. The growth of this spinel phase caused a clear separation of Fe ions from Fe-deficient amorphous phase during isothermal cooling at 1,473 K, allowing an efficient magnetic separation of Fe compound from the slag after pulverization. This novel post-furnace approach achieved approximately 8wt% less Fe contents within the extracted oxide materials than the commercial EAF slag.

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