About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Fundamentals of Sustainable Metallurgy and Processing of Materials
|
| Presentation Title |
Synergistic Valorization of Waelz, Fayalite, and Linz Donawitz Slag Mixtures |
| Author(s) |
JUNNILE LINCONADA ROMERO, Volker Recksiek, Norman Kelly, Lakshmi Kanth Viswamsetty, Alexandros Charitos, Ari O. Vaisanen, Ajay B. Patil |
| On-Site Speaker (Planned) |
JUNNILE LINCONADA ROMERO |
| Abstract Scope |
The approximate annual global production of Linz-Donawitz (LD) slag, Fayalite slag, and Waelz slag is 100 million tons, 44 million tons, and 2 million tons, respectively. Currently these slags have partially utilization due to economic, technical, and environmental hazards. Present study proposes a synergistic valorization that leverages the basicity of LD slag and Waelz slag together with the iron-silicate nature of fayalite slag to generate self-fluxing mixtures. The study aims to recover Zn via the gas phase and Fe, Mn and V in the metal phase and produce a construction friendly slag. Experimental results showed 84% metal yield and 41% zinc purity from the dust collected in the gas filter. The recovered metal nugget contains 86.43% iron, 3.89% manganese, 2.78% silicon, and 0.85% copper. This study demonstrates the viability of integrated slag valorization to minimize waste and support circular economy strategies in metallurgical industries. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Pyrometallurgy, Extraction and Processing, Recycling and Secondary Recovery |