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2021, vol. 76, br. 4, str. 426-436
Luženje polimetalnog Cu-Zn-Pb koncentrata natrijum-nitratom i sumpornom kiselinom
Institut za tehnologiju nuklearnih i drugih mineralnih sirovina - ITNMS, Beograd

e-adresam.sokic@itnms.ac.rs
Projekat:
451-03-9/2021-14/200023

Ključne reči: polimetalni Cu-Zn-Pb koncentrat; luženje; natrijum-nitrat; sumporna kiselina
Sažetak
U radu su prikazani i diskutovani rezultati luženja polimetalnog sulfidnog Cu-Zn-Pb koncentrata rastvorom natrijum-nitrata i sumporne kiseline pri atmosferskom pritisku. Prikazan je hemijski i mineraloški sastav polaznog koncentrata i čvrstih ostataka nakon procesa luženja. Hemijske reakcije luženja i mogućnosti njihovog odvijanja analizirane su primenom termodinamičke analize na osnovu izračunatih Gibbsovih energija i analize E-pH dijagrama. Eksperimentalno je analiziran uticaj temperature i vremena na stepen izluženja korisnih metala iz sulfidnog koncentrata. Pokazano je da je moguće dobiti bakar, cink i železo u rastvoru u obliku sulfata, dok olovo u obliku anglesita (PbSO4) ostaje u čvrstom ostatku nakon procesa luženja. Železo se oksidiše u Fe (III) -sulfat, koji učestvuje u luženju sulfidnih minerala i prelazi u Fe (II) -sulfat.
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O članku

jezik rada: engleski
vrsta rada: izvorni naučni članak
DOI: 10.5937/tehnika2104426S
primljen: 12.08.2021.
prihvaćen: 16.08.2021.
objavljen u SCIndeksu: 03.09.2021.
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