Naslov (eng)

Electrorefining process of the non-commercial copper anode

Autor

Marković, Radmila
Krstić, Vesna
Friedrich, Bernd
Stopić, Srećko
Stevanović, Jasmina
Stevanović, Zoran
Marjanović, Vesna

Opis (eng)

Abstract: The electrorefining process of the non-commercial Cu anodes was tested on the enlarged laboratory equipment over 72 h. Cu anodes with Ni content of 5 or 10 wt.% and total content of Pb, Sn, and Sb of about 1.5 wt.% were used for the tests. The real waste solution of sulfuric acid character was a working electrolyte of different temperatures (T1 = 63 2 C and T2 = 73 2 C). The current density of 250 A/m2 was the same as in the commercial process. Tests were confirmed that those anodes can be used in the commercial copper electrorefining process based on the fact that the elements from anodes were dissolved, the total anode passivation did not occur, and copper is deposited onto cathodes. The masses of cathode deposits confirmed that the Cu ions from the electrolyte were also deposited onto cathodes. The concentration of Cu, As, and Sb ions in the electrolyte was decreased. At the same time, the concentration of Ni ions was increased by a maximum of up to 129.27 wt.%. The major crystalline phases in the obtained anode slime, detected by the X-ray diffraction analyses, were PbSO4, Cu3As, SbAsO4, Cu2O, As2O3, PbO, SnO, and Sb2O3.

Opis (eng)

Received: 15 June 2021 Accepted: 23 July 2021 Published: 26 July 2021

Jezik

srpski

Datum

2021

Licenca

Ovo delo je licencirano pod uslovima licence
Creative Commons CC BY 4.0 - Creative Commons Autorstvo 4.0 International License.

http://creativecommons.org/licenses/by/4.0/legalcode

Predmet

Keywords: electrorefining; non-commercial copper anode; waste solution; high content; Ni; Pb; Sn; Sb; passivation; anode slime

Deo kolekcije (1)

o:179

Institut za rudarstvo i metalurgiju Bor