About this Abstract |
| Meeting |
2027 TMS Annual Meeting & Exhibition
|
| Symposium
|
Rare Metal Extraction & Processing
|
| Presentation Title |
Strategy for the separation of manganese, cobalt, and nickel from NMC811 leachates (H2SO4, HCl, and methanesulfonic acid) via solvent extraction |
| Author(s) |
Kurniawan Kurniawan, Mason Wasilk, Aude Hubaud Heidet |
| On-Site Speaker (Planned) |
Kurniawan Kurniawan |
| Abstract Scope |
The advancement of nickel-rich NMC811 cathodes requires robust recycling processes for spent lithium-ion batteries. This study developed a sequential solvent extraction (SX) strategy to separate Mn, Co, and Ni from three distinct leaching media: H2SO4, HCl, and methanesulfonic acid (MSA), obtained from the leaching of NMC811. First, Mn was selectively extracted using D2EHPA. Cobalt was subsequently recovered from the raffinate using Cyanex 272. For final Ni isolation, two competitive routes were optimized and compared: (i) using saponified Cyanex 272 with precise pH control, and (ii) using LIX 84-I with ammonia addition. Process optimization across all stages evaluated extractant concentration, saponification degree, initial pH, and aqueous-to-organic (A/O) phase ratios, as well as ammonia dosage and contact time for the ammoniacal system. This work establishes critical operational guidelines and trade-offs for scaling up SX purification across diverse acid systems for high-nickel battery recycling. |
| Proceedings Inclusion? |
Planned: |