TY - JOUR A1 - Auer, G. A1 - Spanka, M. A1 - Hamann, Christopher A1 - Adam, Christian T1 - Thermal zinc extraction from steel mill dust T2 - World of Metallurgy – Erzmetall N2 - Treatment and reusing of hazardous wastes have become significant issues of modern societies. Blast furnace sludge (BFS) and electric arc furnace dust (EAFD) are such typical wastes, because they usually contain high amounts of undesirable elements such as zinc (Zn) and lead (Pb). These elements can cause operational problems in reusing of BFS and EAFD. In this study, the Ferro Duo GmbH and the Federal Institute for Materials Research and Testing have investigated a novel approach for eliminating and/or recovering Zn and Pb from both wastes. Applied was a selective chlorination and volatilization of Zn and Pb as chlorides at temperatures between 500 °C and 1100 °C. Both product obtained, Zn and Pb in the form of ZnCl2 and PbCl2 and the purified solid mineral compound are attractive materials for further use. Hydrochloric acid and iron(II) chloride were used as chlorination agents. Exceptionally high Zn and Pb removal efficiencies of >99.5 % could be achieved with both chlorination agents, whereby iron(II) chloride exhibited better performance. PB - GDMB Verlag GmbH CY - Clausthal-Zellerfeld KW - Blast furnace sludge KW - Chlorination KW - Electric arc furnace dust KW - Lead KW - Zinc KW - Thermochemical treatment PY - 2019 UR - https://opus4.kobv.de/opus4-bam/frontdoor/index/index/docId/47288 AN - OPUS4-47288 SN - 1613-2394 VL - 72 IS - 1 SP - 27 EP - 31 AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany