o:5250 Hazardous industrial waste from steel production as raw material for zinc recovery en Abstract: In the steel production process from secondary raw materials, dust from electric arc furnaces (EAF dust), which contains significant amounts of Zn and other heavy metals, is formed as a by-product. EAF dust is characterized worldwide as a hazardous industrial solid waste due to the significant presence of heavy metals, which due to inadequate disposal can lead to a negative impact on the environment and human health. In addition to the effect for environmental protection, the treatment of EAF dust can also have an additional economic effect by valorizing zinc and other useful components. The paper includes a complete physico-chemical and mineralogical characterization of the initial EAF dust sample. In order to zinc recovery as a useful component, the hydrometallurgical treatment of EAF dust was examined, which includes two technological phases: water leaching of EAF dust in order to remove soluble impurities in water, and acid leaching in order to zinc recovery present in the form of ZnO. The optimal parameters in the first phase of water leaching are as follows: ambient temperature, solid:liquid ratio 1:5, reaction time 60 min, pH correction to pH<11, and stirring speed 750 rpm. The optimal parameters in the second phase of acid leaching are as follows: concentration of H2SO4 1.5M with the addition of O2 as oxidant, solid:liquid ratio 1:5, reaction time 10 min, stirring speed 750 rpm at ambient temperature. The above-mentioned combined hydrometallurgical treatment of EAF dust achieved a zinc leaching rate of 82.34%, which confirms the double effect of the treatment. 91552100 134776841 1552100 978-86-89061-17-8 2024-08-21T11:42:59.434Z 44 no 46 Vanja Trifunović Institut za rudarstvo i metalurgiju Bor 84760329 0000-0003-4839-8751 2023 46 Dragana Božić Institut za rudarstvo i metalurgiju Bor 52519945 0000-0003-1055-8449 2023 46 Vesna Conić Institut za rudarstvo i metalurgiju Bor 55525641 0000-0002-4268-3626 2023 46 Ljiljana Avramović Institut za rudarstvo i metalurgiju Bor 23392871 0000-0002-3747-1530 2023 46 Snežana Milić Tehnički fakultet u Boru, Bor 35848039 0000-0002-5000-9156 2023 46 Mile Bugarin Institut za rudarstvo i metalurgiju Bor 1664103 0000-0002-6992-5154 2023 46 Renata Kovačević Institut za rudarstvo i metalurgiju Bor 60032521 0000-0003-4108-0855 2023 application/pdf 1765588 https://unilib.phaidrabg.rs/o:5250 no yes 1 70 92000004 71A03 Knjiga apstrakata Međunarodna naučna konferencija Zelena ekonomija u funkciji rešavanja globalnih ekoloških problema (2023 ; Beograd) 30 30 2023