TY - JOUR N2 - Industrial steelmaking (EAF) flue dust was characterized in terms of chemical and phase compositions, leaching behaviour in 20% sulphuric acid solution as well as leaching thermal effect. Waste product contained about 43% Zn, 27% Fe, 19% O, about 3% Pb and Mn and lesser amounts of other elements (Ca, Si, Mo, etc.). It consisted mainly of oxide-type compounds of iron and zinc. Dissolution of metals (Zn, Fe, Mn) from the dust was determined in a dependence of solid to liquid ratio (50-200 g/L), temperature (20-80oC) and leaching time (up to 120 min). The best result of 60% zinc recovery was obtained for 50 g dust/L and a temperature of 80oC. Leaching of the material was an exothermic process with a reaction heat of about –318 kJ/kg. Precipitation purification of the solution was realized using various ratios of H2O2 to NH3aq. A product of this stage was hydrated iron(III) oxide. Final solution was used for zinc electrowinning. Despite that pure zinc was obtained the highest cathodic current efficiency was only 40%. L1 - http://www.czasopisma.pan.pl/Content/116035/PDF/AMM-2020-2-12-Rudnik.pdf L2 - http://www.czasopisma.pan.pl/Content/116035 PY - 2020 IS - No 2 EP - 608 DO - 10.24425/amm.2020.132798 KW - EAF dust KW - leaching KW - electrowinning KW - recycling A1 - Rudnik, E. PB - Institute of Metallurgy and Materials Science of Polish Academy of Sciences PB - Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences VL - vol. 65 DA - 2020.05.08 T1 - Recovery of Zinc from Steelmaking Flue Dust by Hydrometallurgical Route SP - 601 UR - http://www.czasopisma.pan.pl/dlibra/publication/edition/116035 T2 - Archives of Metallurgy and Materials ER -