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Low-Temperature Electrowinning of Iron from Mixed Hematite-Magnetite Alkaline Suspensions

Authors :
Boehme, Clara
Starykevich, Maksim
Constantinescu, Gabriel
Kovalevsky, Andrei V.
Lopes, Daniela V.
Source :
Journal of the Electrochemical Society; May 2023, Vol. 170 Issue: 5 p052502-052502, 1p
Publication Year :
2023

Abstract

Iron ore represents a potential feedstock for the alkaline electrowinning of iron from suspensions. However, several difficulties can be imposed during the electrowinning due to the presence of several iron oxide types with different iron valences (e.g. hematite with magnetite), requiring further studies for establishing electrowinning as an alternative technology for iron production. In fact, an adverse effect on the Faradaic efficiency was previously reported when using magnetite as feedstock. The present study demonstrates, for the first time, the possibility of obtaining relatively high Faradaic efficiencies (66%) with hematite-magnetite mixtures at low temperature (80 °C).

Details

Language :
English
ISSN :
00134651 and 19457111
Volume :
170
Issue :
5
Database :
Supplemental Index
Journal :
Journal of the Electrochemical Society
Publication Type :
Periodical
Accession number :
ejs62979964
Full Text :
https://doi.org/10.1149/1945-7111/acd085