| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
New Directions in Mineral Processing, Extractive Metallurgy, Recycling and Waste Minimization: An EPD Symposium in Honor of Patrick R. Taylor
|
| Presentation Title |
Nickel Matte as Novel Reductant in Galvanic Leaching of Spent Lithium-ion Battery Black Mass |
| Author(s) |
Erik Prasetyo, Sulalit Bandyopadhyay |
| On-Site Speaker (Planned) |
Erik Prasetyo |
| Abstract Scope |
Hydrometallurgy is the most applied technology to extract valuable metals from spent lithium-ion battery, which H<sub>2</sub>SO<sub>4</sub>-H<sub>2</sub>O<sub>2</sub> combination is mostly used as lixiviant. However, H<sub>2</sub>O<sub>2</sub> application poses several problems including instability and high reactivity in high temperature leaching. In here, nickel matte (NM; Ni-Cu Sulfide) is proposed as a novel reductant in H<sub>2</sub>SO<sub>4</sub> leaching. The effects of NM dosage, pulp density, H<sub>2</sub>SO<sub>4</sub> concentration, temperature, and reaction time on metal recovery has been studied. The results demonstrate that NM improves metal dissolution. With leaching condition H<sub>2</sub>SO<sub>4</sub> 1 M, pulp density 5%, temperature 70 °C, both Co and Mn recovery are doubled when NM is added. NM addition also enhances the metal leaching kinetics, which maximum metal recovery is attained within 30 min (NM addition), compared to 4 h for control condition. Aside from its advantage as reductant, NM addition could increase Ni concentration in leachate, which further facilitate direct nickel-rich cathode syntheses. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Recycling and Secondary Recovery, Hydrometallurgy, Other |