About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Fundamentals of Sustainable Metallurgy and Processing of Materials
|
| Presentation Title |
Solid-state Hydrogen Reduction Behaviour of Cu in CuO and Synthetic Copper Slag |
| Author(s) |
Dian Mughni Fellicia, Reiza Mukhlis, Suresh Palanisamy, Mark Pownceby, M. Akbar Rhamdhani |
| On-Site Speaker (Planned) |
M. Akbar Rhamdhani |
| Abstract Scope |
This study compares the solid-state hydrogen-reduction of pure CuO and synthetic copper slag, both prepared from high-purity commercial powders. The synthetic slag consisted of 39wt% SiO2, 26wt% Fe2O3, 25wt% CaO, 5wt% Al2O3, and 5wt% CuO. Both materials were pelletized and reduced at 1000°C for 5 to 20 minutes in a horizontal furnace under 15% H₂/Ar gas flowing at 300 ml/min. Complete reduction of CuO to metallic Cu was achieved in both systems, after 20 minutes for CuO, and after 15 minutes for the synthetic slag. In the slag samples, SEM-EDX analysis showed that Fe2O3 reduction occurred gradually after the complete reduction of CuO, as no metallic Fe was found in samples reduced between 5 to 15 minutes. These findings show that in complex oxide systems, hydrogen effectively and selectively reduces CuO prior to Fe-oxides thereby demonstrating the feasibility of hydrogen-based reduction for selective copper recovery from slags containing iron. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Copper / Nickel / Cobalt, Pyrometallurgy, Recycling and Secondary Recovery |