2017-Sustainable Industrial Processing Summit
SIPS 2017 Volume 7. Recycling, Secondary Batteries and Environmental Protection

Editors:Kongoli F, Aifantis K, Kumar V, Pagnanelli F, Kozlov P, Xueyi G
Publisher:Flogen Star OUTREACH
Publication Year:2017
Pages:205 pages
ISBN:978-1-987820-73-7
ISSN:2291-1227 (Metals and Materials Processing in a Clean Environment Series)
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    Recycling of Jarosite and Electric Arc Furnace Dust in a Metal Bath Process to Recover Valuable Metals

    Stefan Wegscheider1; Juergen Antrekowitsch2; Stefan Steinlechner3;
    1MONTAUNIVERSITAET LEOBEN, Leoben, Austria; 2CHRISTIAN DOPPLER LABORATORY FOR OPTIMIZATION AND BIOMASS UTILIZATION IN HEAVY METAL RECYCLING, Leoben, Austria; 3CHAIR OF NONFERROUS METALLURGY, Leoben, Austria;
    Type of Paper: Regular
    Id Paper: 57
    Topic: 7

    Abstract:

    The recycling of hazardous metallurgical waste, such as jarosite, a precipitation residue from the hydrometallurgical zinc winning route and electric arc furnace dust (EAFD) from the iron and steel industry displays one aim for the future to open up new chances for secondary resources and to avoid landfilling. More than 50 % of the worldwide production of EAFD and the majority of the jarosite are still dumped, although there are valuable metals, such as zinc, lead, indium, silver and iron present in these by-products.
    Since the EAFD and the jarosite represent a high economical potential, a metal bath process offers a possibility to reprocess both residues together and to achieve a multi-metal recovery. The advantages of the process are that two residues can be treated together to recover valuable metals, while at the same time no more dumping of the waste is necessary. The products of the process include a metal-bearing off-gas, an iron alloy as well as a slag. This paper describes the concept of the developed metal bath process and shows first results of carried out lab-scale trials.

    Keywords:

    Dust; Recycling; Wastes; Zinc;

    References:

    [1] L. Southwick: Zinc recovery from Electric Arc Furnace (EAF) Dust, Worldwide Survey, Report of International Lead and Zinc Study Group, 2015
    [2] P. Asokan, M. Saxena and S.R. Asolekar: Hazardous jarosite use in developing non-hazardous product for engineering application, Journal of Hazardous Materials, 137 (2006), 1589–1599
    [3] L. Montanaro, N. Bianchini, J. Rincon and M. Romero: Sintering behaviour of pressed red mud wastes from zinc hydrometallurgy, Ceramics International, 27 (2001), 29–37
    [4] A. Pappu, M. Saxena and S.R. Asolekar: Jarosite characteristics and its utilisation potentials Science of The Total Environment, 359 (2006), 232–243
    [5] S. Wegscheider and S. Steinlechner: Thermodynamic considerations regarding the volatilization behavior of silver and indium from jarosite by a pyrometallurgical treatment, Proceedings of Multi Science – XXX microCAD, International Multidisciplinary Scientific Conference, University of Miskolc, Miskolc, Hungary, 2016
    [6] S. Wegscheider and S. Steinlechner: Residues from the zinc industry – a potential future resource for silver and indium, Proceedings of COM 2016 – 55th Conference of Metallurgists hosted by IMPC 2016, Quebec City, Kanada, 41
    [7] S. Wegscheider, S. Steinlechner and M. Leuchtenmüller: Innovative concept for the recovery of silver and indium by a combined treatment of jarosite and electric arc furnace dust, JOM, 69(2) (2017), 388-394
    [8] R. L. Frost, R. Wills, J. T. Kloprogge, and W. Martens: Thermal decomposition of ammonium jarosite (NH4)Fe3(SO4)2(OH)6, Journal of Thermal Analysis and Calorimetry, 84(2) (2006), 489-496

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    Cite this article as:

    Wegscheider S, Antrekowitsch J, Steinlechner S. (2017). Recycling of Jarosite and Electric Arc Furnace Dust in a Metal Bath Process to Recover Valuable Metals. In Kongoli F, Aifantis K, Kumar V, Pagnanelli F, Kozlov P, Xueyi G (Eds.), Sustainable Industrial Processing Summit SIPS 2017 Volume 7. Recycling, Secondary Batteries and Environmental Protection (pp. 103-110). Montreal, Canada: FLOGEN Star Outreach