Abstract: The paper presents a procedure for obtaining Zn from jarosite waste raw material by combining low-temperature roasting at 530°C and leaching in water with its simultaneous separation from Fe. By low-temperature roasting, iron was converted from the Fe2(SO4)3 form into Fe2O3, which is insoluble in water and slightly soluble in acid. As zinc sulfate decomposes at 740°C, the zinc remains in the form of ZnSO4, which is easily dissolved in water. In this way, the selectivity of Zn over Fe was achieved. Jarosite is the residue of hot-acid leaching. It is obtained according to the old technology of obtaining zinc. Jarosite with a relatively high content of 4.7% Zn is a technological choice for obtaining products of commercial quality. From the experimental results, by roasting 100g of jarosite for 4 hours at 530°C in electric furnace and leaching the roasted sample in water under the conditions: S:L =1:5, room temperature, time 1h, the leaching degree of 91.97% and 9.60% were obtained for Zn and Fe respectively. By applying the precipitation, using 1MNaOH, on leaching solution, 99.93%Fe is precipitated to the pH=4. Zinc precipitates at a pH > 5.5, so it completely remains in leach solution. Zn in the form of ZnSO4 can be further treated by the electrolysis process in order to obtain pure electrolytic Zn, or by precipitation with Na2CO3 it can be obtained as ZnCO3 concentrate of commercial quality. The proposed process does not pollute the environment with As and Cd and is better for the environment. Conić, Vesna Božić, Dragana Avramović, Ljiljana Trifunović, Vanja Bugarin, Mile Janošević, Miloš Combination of processes to obtain Zn from jarosite waste Knjiga apstrakata Međunarodna naučna konferencija Zelena ekonomija u funkciji rešavanja globalnih ekoloških problema (2023 ; Beograd) str. 27-27 info:eu-repo/semantics/conferenceProceedings 2023 https://unilib.phaidrabg.rs/o:5252 cobiss:134782729 ISBN: 978-86-89061-17-8 application/pdf 1763771 bytes eng All rights reserved