Abstract: This paper describes the impact of adding pyrite and ferrous sulfate on the recovery of Cu and Zn in the bioleaching process of treating the polymetallic raw materials. For a period of 20 days, at temperature of 300C, phase ratio S:L=1:5 and pH=2 with bacterial culture At. Ferrooxidans and At. Thiooxidans, higher Cu leaching was achieved with addition of pyrite compared to the addition of ferrous sulfate, and significantly lower leaching of Zn for both cases of addition pyrite and ferrous sulfate. https://unilib.phaidrabg.rs/o:5962 cobiss:138193673 ISBN: 978-86-7827-052-9 info:eu-repo/semantics/conferenceProceedings Keywords: bioleaching, polymetallic ore, metals recovery, pyrite, ferrous-sulphate. eng Proceedings International October Conference on Mining and Metallurgy (53 ; 2022 ; Bor) startpage: 195 endpage: 198 Conić, Vesna Dragulović, Suzana Božić, Dragana Milanović, Dragan Jovanović, Ivana Stanković, Srđan Avdalović, Jelena 2022 application/pdf 294259 bytes All rights reserved Correlation of Fe2+ with Cu2+ and Zn2+ in the bioleaching process