To extract and separate copper from spent lithium ion battery leaching solution were carried out by using two domestically-made extractants of N902 and AD100. Effects of initial pH of aqueous phase, extractant concentration, phase ratio (O/A) and extraction time on copper extraction rate were investigated. The experiments were carried out at room temperature. The results showed that the first-stage copper extraction rate can achieved 98.3% for N902, under the optimal conditions of initial pH of 3.0, extractant concentration of 20%, phase ratio (O/A) 1:1 and extraction time 240 s. While the first-stage extraction rate can be 97.1% for AD100, under the conditions of initial pH 3.0, extractant concentration 25%, O/A 1:1 and extraction time 180 s. By using sulfuric acid as stripping agent, the first stage stripping rates of the copper for two extractants of N902 and AD100 can achieved both more than 95%, copper was recovered efficiently, and presented similar effect.
Yan CHEN Jiehong CHENG
. Copper Separation from Spent Lithium Ion Battery by Hydroxyoxime Extractants[J]. The Chinese Journal of Process Engineering, 2017
, 17(6)
: 1170
-1175
.
DOI: 10.12034/j.issn.1009-606X.217125
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