Pre-treatment operations envisaging the processing of spent Li-ion batteries by hydrometallurgy

Nogueira, Carlos; Margarido, F.

http://hdl.handle.net/10400.9/4248

Use this identifier to reference this record.

Name:	Description:	Size:	Format:
CNogueira_paper-Wastes 2023.pdf		562.92 KB	Adobe PDF	Download

Send Feedback

Authors

Nogueira, Carlos

Margarido, F.

Abstract(s)

ABSTRACT: In the recycling of spent batteries by hydrometallurgy, the pre-metallurgical processing is a crucial step to produce a concentrate (black-mass) rich in electrode materials, namely the cathode powders containing the metals Li, Ni, Co and Mn. In this paper, a series of operations including drying, thermal treatment, grinding and sieving were proposed and tested. Drying allowed to remove efficiently the solvent from the electrolyte while thermal treatment was effective in removing the binder and allowing the release of electrode powders during grinding of the electrode sheets. As a result, 98% of the cathode materials containing the valuable metals were recovered in the fine fraction (below 0.5 mm) with low Al and Cu contamination from the foils. These fines constitute a valuable black-mass to be treated by hydrometallurgy.

Keywords

Li-Ion batterie Recycling Pre-treatment Hydrometallurgy

URI

http://hdl.handle.net/10400.9/4248

Citation

Nogueira, Carlos... et.al - Pre-treatment operations envisaging the processing of spent Li-ion batteries by hydrometallurgy. In: Book of Proceedings of 6th International Conference WASTES: Solutions, Treatments and Opportunities, Coimbra, Portugal, 6-8 september, 2023, p. 241-243