Method of Electric Arc Furnace Dust Processing by Calcination with Lime with Following Alkaline Leaching

Abstract

The paper presents the results of the investigation of elemental and phase composition of zinc-containing electric arc furnace dust, the product formed by the dust calcination with lime, and the residue formed by alkaline leaching of the calcined product. The phase distribution in samples is studied by X-ray diffraction analysis, Mössbauer spectroscopy, and scanning electron microscopy. It is shown that electric arc furnace dust calcination with lime followed by alkaline leaching the calcined product can be used to recycle the dust with recovery of valuable components.