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

Autor:	Clara Boehme, Maksim Starykevich, Gabriel Constantinescu, Andrei V. Kovalevsky, Daniela V. Lopes
Rok vydání:	2023
Předmět:	Renewable Energy Sustainability and the Environment Materials Chemistry Electrochemistry Condensed Matter Physics Surfaces Coatings and Films Electronic Optical and Magnetic Materials
Zdroj:	Journal of The Electrochemical Society. 170:052502
ISSN:	1945-7111 0013-4651
Popis:	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).
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0b4b061c0832604b507de2738e05276c https://doi.org/10.1149/1945-7111/acd085 Zobrazit plný text záznamu