Effect on Copper Recovery by Ultrasonic Energy during Cementation Reaction from Copper-contained Waste Etching Solution

Boram Kim, D. Jang, Dae-Weon Kim, B. Chae, Sang-Woo Lee
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Abstract

In this study, effects of ultrasonic energy on the cementation reaction and copper recovery rate were investigated for different types of iron samples, such as plate, chip, and powder, for recovering copper from waste etchant, which contained ~3.5% copper. The cementation reaction using the ultrasonic energy was more effective than the simple stirring reaction, with the former exhibiting a high copper recovery rate than the latter for the same time interval. When cementation was performed for 25 min with ultrasonic treatment, rather than simple stirring, the copper recovery rate of the plate, chip, and powder improved from 7.0% to 12.0%, 14.0% to 46.1%, and 41.9% to 77.2%, respectively. Therefore, the use of ultrasonic energy could detach the copper recovered by the cementation reaction from the surface of the iron samples, thereby increasing the copper recovery rate. Owing to the use of ultrasonic energy, the copper recovery rate increased by 2–6 times, and the recovered copper exhibited a decreased particle size compared to that obtained via simple stirring.
超声能量对含铜蚀刻废液胶结反应中铜回收的影响
本文以含铜量为~3.5%的废蚀刻剂为原料,研究了超声能量对不同类型铁样品(板、片、粉)的胶结反应和铜回收率的影响。超声能量胶结反应比单纯搅拌反应更有效,在相同的时间间隔内,前者的铜回收率高于后者。与单纯搅拌相比,超声胶结25 min后,板、片、粉的铜回收率分别从7.0%提高到12.0%、14.0%提高到46.1%、41.9%提高到77.2%。因此,利用超声波能量可以将胶结反应回收的铜从铁样品表面分离,从而提高铜的回收率。超声能量的使用使铜的回收率提高了2 ~ 6倍,回收的铜的粒度比单纯搅拌得到的铜小。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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