| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
REWAS 2025: Sustainable Practices in Strategic and Critical Raw Materials: Exploring Supply Chain Resilience and Recycling Innovations
|
| Presentation Title |
The Future of Zinc Recovery from Electric Arc Furnace Dust: Opportunities and Challenges |
| Author(s) |
Manuel Leuchtenmueller |
| On-Site Speaker (Planned) |
Manuel Leuchtenmueller |
| Abstract Scope |
The recovery of zinc from zinc-bearing industrial waste streams represents a critical pathway for resource sustainability and environmental management. The state-of-the-art treatment via the Waelz kiln, is optimized regarding coke consumption and is economically favorable, but still comes with significant drawbacks, including a still substantial carbon footprint and the underutilization of metal recovery mainly Fe, but also Zn.
Dust2Value process, a pioneering approach is designed to overcome these drawbacks and enhance the efficiency and environmental compatibility of zinc recovery. This innovative process utilizes hydrogen to reduce and evaporate ZnO to gaseous Zn, followed by re-oxidation with H2O to recover both the reduction/evaporation enthalpy and the reducing agent. Moreover, the use of hydrogen allows to optimize process conditions, allowing for an increased recovery rate of zinc oxide and the production of secondary-grade direct reduced iron (DRI) with high metallization and low sulfur concentration, which is marketable back to steel producers. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Recycling and Secondary Recovery, Process Technology, Iron and Steel |