Abstract
The reduction of zinc and iron oxides from electric arc furnace dust (EAFD) by carbon was investigated at temperatures between 800 and 1300°C. The analytic technique employed includes chemical analysis, X-ray fluorescence spectroscopy (XR.F), X-ray powder diffraction (XRD), scanning electron microscopy (SEM) equipped with X-ray energy dispersive spectrometry (EDS), and thermodynamic database Fact Sage 6. 2. It was found that the reduction of zinc and iron oxides depends largely on Boudouad reaction. At 900°C, zinc exists in tested samples as ZnQ, which is reduced in the temperature range of 1000–1100°C. At 1100°C, 99.11% of the zinc is evaporated. The metallization ratio of Fe is 79.19% at 1300°C, as the content of Fe2+ is still 9. 40%. A higher temperature is thus required for a higher reduction degree of Fe oxides by solid or gaseous carbon.
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Zhang, Hn., Li, Jl., Xu, Aj. et al. Carbothermic Reduction of Zinc and Iron Oxides in Electric Arc Furnace Dust. J. Iron Steel Res. Int. 21, 427–432 (2014). https://doi.org/10.1016/S1006-706X(14)60066-2
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DOI: https://doi.org/10.1016/S1006-706X(14)60066-2