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Recovery of copper and tin from waste tinned copper wires by ultrasonic assisted chemical replacement

Jiaqi Fu, Bohong Chen, Yinxuan Fu, and Xiaoping Chen

Institute of Energy Research, Jiangxi Academy of Sciences, Nanchang, China

 

E-mail: cxpjxskxy@126.com

Received: 12 June 2022  Accepted: 18 February 2023

Abstract:

In this work, a facile ultrasonic-assisted chemical replacement method was developed for the recovery of copper and tin from tinned copper wire waste. The reaction conditions for the process were optimized (e.g. hydrochloric acid concentration, copper sulfate concentration, ultrasonic frequency, ultrasonic power, reaction time). The ultrasonic method accelerated the tin removal process and promoted the tin removal efficiency. Thus, Cu and Sn can be separately recovered quickly and efficiently by the developed method, even while using a stripping solution with low concentrations of copper sulfate and hydrochloric acid. Meanwhile, the mechanism responsible for the tin stripping and its recovery from the stripping solution was also investigated.

Graphical abstract

Keywords: Ultrasonic; Replacement method; Waste wires; Recycling; Tin stripping solution

Full paper is available at www.springerlink.com.

DOI: 10.1007/s11696-023-02746-y

 

Chemical Papers 77 (7) 3847–3854 (2023)

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