o:4115 Elektrolitičko izdvajanje cinka iz prašine industrijske elektrolučne peći Zinc electrowinning from industrial electric arc furnace dust en Apstrakt: Cilj ovog istraživanja je izdvajanje metalnog cinka iz prašine koja nastaje u industrijskoj elektrolučnoj peći (EAF prašina) postupkom elektrovininga. Ispitivanja su realizovana u laboratorijskim uslovima sa sumporno kiselim elektrolitima. Katodna gustina struje iznosila je 500 A/m2. Temperatura elektrolita održavana je u opsegu 38±2 °C. Trajanje procesa je izračunato da bi se koncentracija Zn u elektrolitu smanjila za 30 g/l. Rezultati su pokazali iskorišćenje struje u opsegu od 50,4 % do 89,3 %, zavisno od sastava elektrolita i čistoće katodnih materijala. Rezultati ispitivanja potvrđuju da se EAF prašina može koristiti kao sirovina za elektrolitičko dobijanje cinka. Takođe, hemijska karakterizacija elektrolita na početku i na kraju svakog eksperimenta, kao i karakterizacija katodnih depozita dobijenih tokom procesa elektrovininga, skenirajuća elektronska mikroskopija sa energetski disperzivnom rendgenskom spektroskopijom (EDS), potvrdili su da nečistoće iz elektrolita imaju krucijalan uticaj na kvalitet depozita cinka. Abstract: The aim of this study was a recovery of zinc metal from dust generated in the industrial electric arc furnace (EAF dust) by the electrowinning process. Investigations are realized in laboratory conditions with sulphury acid electrolytes. Cathode current density was 500 A/m2. Electrolyte temperature was in the range of 38±2 oC. Process duration was calculated in order to reduce the Zn concentration in the electrolyte by 30 g/l. Results are shown that the current efficiency was in a range from 50.4 mass % to 89.3 mass % in accordance with the electrolyte composition and purity of the cathode materials. The results of the tests are confirmed that the EAF dust could be used as a raw material for electrolytic zinc recovery. Also, chemical characterization of the electrolyte at the start and at the end of each test, as so as the cathode deposits characterization, scanning electron microscopy with energy-dispersive X-ray spectroscopy (EDS) of cathode deposits obtained during the electrowinning process, confirmed that the electrolyte impurities have the crucial influence on the quality of deposited zinc. Ključne reči: cink, elektrolučna peć, elektrovining, nečistoće, SEM EDS. Keywords: zinc, electric arc furnace, electrowinning, impurities, SEM EDS. 91552100 134700809 1552100 978-86-85535-13-0 2024-03-05T14:40:48.782Z 44 no 46 Silvana Dimitrijević Institut za rudarstvo i metalurgiju Bor 25647975 0000-0003-1670-4275 2022 46 Radmila Marković Institut za rudarstvo i metalurgiju Bor 67811081 0000-0001-9754-1150 2022 46 Dragan Tošković Faculty of Technology in Zvornik, University of East Sarajevo 10231143 2022 46 Tamara Urošević Institut za rudarstvo i metalurgiju Bor 67579913 0000-0002-9838-3702 2022 46 Ljiljana Avramović Institut za rudarstvo i metalurgiju Bor 23392871 0000-0002-3747-1530 2022 application/pdf 665809 https://unilib.phaidrabg.rs/o:4115 no yes 1 70 669.5:621.365.2 92000004 71A03 Zbornik radova pisanih za 10. Međunarodnu konferenciju o obnovljivim izvorima električne energije (10 ; 2022 ; Beograd) Proceedings International Conference on Renewable Electrical Power Sources (10 ; 2022 ; Beograd) 201 205 2022