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Recovery of zinc from EAF dust - Pilot experiences at MEFOS
RISE, Swerea, Swerea MEFOS.
RISE, Swerea, Swerea MEFOS.
2008 (English)In: Proceedings of the 2008 Global Symposium on Recycling, Waste Treatment and Clean Technology, REWAS 2008, 2008, 577-582 p.Conference paper, Published paper (Refereed)
Abstract [en]

Despite of numerous solutions for recovery of zinc from EAF dust have been suggested and tested in laboratory scale over the last three decades, Waelz kiln process is still the most dominating process for treatment of EAF dust. Few of the proposed alternative methods have gone beyond the laboratory tests. This paper will give you insights to some of the concepts that have been pilot tested at MEFOS. The innovative aspects of these concepts will be shown and the major results will be highlighted. These include the following concepts: - Production of a crude zinc oxide product with low halide content for zinc electrowinning using a DC furnace with hollow electrode - Production of a bypass filter dust containing more than 50%ZnO by injection of EAF dust to the electric arc furnace during refining combined with a bypass filter system - Elimination of zinc ferrite by CaO treatment for electrowinning with EZINEX process - Selective reduction of iron oxide in zinc ferrite for simultaneous recovery of ZnO and metallic iron.

Place, publisher, year, edition, pages
2008. 577-582 p.
Keyword [en]
Bypass filter, DC-furnace, EAF dust, Elimination, Selective reduction, Zinc ferrite
National Category
Materials Engineering
Identifiers
URN: urn:nbn:se:ri:diva-13492Scopus ID: 2-s2.0-62449266392ISBN: 9780873397261 (print)OAI: oai:DiVA.org:ri-13492DiVA: diva2:973701
Conference
2008 Global Symposium on Recycling, Waste Treatment and Clean Technology, REWAS 2008
Available from: 2016-09-22 Created: 2016-09-22Bibliographically approved

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Swerea MEFOS
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