Metal Recovery of Discarded Stacks and Batteries, Liquid-Liquid Extraction and Stripping Parameters Effect

Abstract:

The purpose of this paper is to study metal separation from a sample composed of a mixture of the main types of spent household batteries, using a hydrometallurgical route, evaluating the parameters effect of the liquidliquid extraction, with Cyanex 272, and stripping. The preparation of solution consisted of: grinding the waste of mixed batteries, reduction and volatile metals elimination using electric furnace and acid leaching. With the best results obtained after liquidliquid extraction and stripping it was possible to get 4 solutions of metal sulfates that they could be used in posterior metals recovery by electroplating, they are: 1) to copper recovery: Cu 203.7 g L^-1 + Co 20.8 g L^-1 + Mn 2,626.6 g L^-1; 2) to cobalt recovery: Co 364.0 g L^-1; to manganese recovery: Mn 49,929.0 g L^-1 and 4) to nickel recovery: Ni 1,241.9 g L^-1.

• Periodical: Materials Science Forum (Volumes 727-728)
• Pages: 486-490
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.727-728.486
• Online since: August 2012
• Authors: Kellie Provazi, Denise Crocce Romano Espinosa, Jorge Alberto Soares Tenório
• Keywords: Batteries, Liquid-Liquid Extraction, Stacks, Stripping

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