Investigation of Low-Temperature Molten Oxide Electrolysis of a Mixture of Hematite and Zinc Oxide.

ABSTRACT: To develop a CO₂-free process for recovering Fe and Zn metals from electric arc furnace (EAF) dust, this study investigated the molten oxide electrolysis of various Fe₂O₃-ZnO mixtures in a B₂O₃-Na₂O electrolyte. Electrolysis was conducted using an Fe cathode and Pt anode at 1173 K by applying cell voltages that were determined based on thermodynamic calculations and cyclic voltammetry measurements. When electrolysis was conducted at a cell voltage of 1.1 V, the selective reduction of Fe oxide to Fe metal was observed without ZnO reduction. However, when 1.6 V was applied, the co-reduction of Fe oxide and ZnO to the Fe-Zn alloy was observed. In the vacuum distillation of the Fe-Zn alloy at 1000-1200 K, Zn metal with a purity

SUBMITTER: Kim J 

PROVIDER: S-EPMC12429705 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature