Home >> Mineral Processing and Extractive Metallurgy, Volume 117, Number 2

Recovery of metals from steelmaking dust by selective chlorination–evaporation process

Authors: Matsuura, H.; Tsukihashi, F.

Source: Mineral Processing and Extractive Metallurgy, Volume 117, Number 2, 2008 , pp. 123-128(6)

Publisher: Maney Publishing

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Abstract:

Treatment of electric arc furnace (EAF) dusts has become an important issue from the viewpoint of environmental protection and the recycling of valuable resources because these dusts contain considerable amount of zinc and lead. A new recovery process has been proposed, in which the metals in the dusts react with waste polyvinyl chloride to form metal chlorides. To clarify the physicochemical properties and behaviour of zinc, lead and their chlorides and oxychlorides, the kinetics of chlorination of ZnO, PbO and ZnFe2O4 contained in the EAF dusts were investigated at 1023–1273 K with Ar–O2–Cl2 gas. Based on these results, the selective chlorination and evaporation of zinc and lead from Fe2O3–ZnFe2O4–ZnO–PbO mixtures has been examined and the high efficiency of selectivity demonstrated.

Keywords: RECYCLING; ENVIRONMENTAL PROTECTION; STEELMAKING DUST; SELECTIVE CHLORINATION; LEAD; ZINC

Document Type: Research Article

DOI: http://dx.doi.org/10.1179/174328508X290920

Publication date: 2008-06-01

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