A Study on the Effect of Particle Size on Li-Ion Battery Recycling via Flotation and Perspectives on Selective Flocculation

The recycling of active materials from Li-ion batteries (LIBs) via froth flotation has gained interest recently. To date, recycled graphite not been pure enough for direct reuse in LIB manufacturing. present work studied the effect particle sizes on grade graphite. Furthermore, selective flocculation is proposed as a novel approach to control and thus improve by preventing entrainment cathode components. Zeta potential size measurements were performed find an optimal pH electrically study interaction flocculants, respectively. Batch experiments investigate purity recovered Results suggested that, absence ultrafine fine particles, battery-grade 99.4% could be recovered. In presence 98.2% was observed. Flocculating feed increased 98.4%, although drop recovery By applying dispersant addition flocculant, while maintaining 98.4% grade. Branched flocculants provided improved selectivity over linear flocculants. results suggest that needs controlled