About this Abstract |
| Meeting |
2027 TMS Annual Meeting & Exhibition
|
| Symposium
|
Next Generation Electrometallurgical Technologies for Metal Extraction, Refining, and Recycling
|
| Presentation Title |
Recovery of Valuable Metals From Secondary Resources Using Molten Oxide Electrolysis |
| Author(s) |
Dongjin Han, Joongseok Kim, Jungshin Kang |
| On-Site Speaker (Planned) |
Jungshin Kang |
| Abstract Scope |
In this study, molten oxide electrolysis (MOE) using a Na2O–B2O3 electrolyte was investigated to recover valuable metals, including Ni, Co, Zn, and Fe, from industrial wastes. For Ni and Co recovery from residues generated during spent desulfurization catalyst recycling, the effects of applied voltage in the range of 0.6–1.2 V and electrolyte composition were examined at 1173 K. Using Pt electrodes, Ni and Co were preferentially electrodeposited at 0.6 V, and the cathode surface contained 29.0 mass% Ni and 5.26 mass% Co. The applicability of MOE to Fe and Zn recovery from EAF dust was also examined at 1173 K. Applied voltage and feed composition affected the electrochemical reduction behavior, enabling selective Fe reduction at 1.1 V or co-reduction of Fe oxide and ZnO at 1.6 V. These results demonstrate the feasibility of MOE for recovering valuable metals from complex oxide-bearing secondary resources. |
| Proceedings Inclusion? |
Planned: |