Sequential separation of Ag, Al, Cu and Pb from a multi-metal leached solution using a zero waste technology

被引：4
|
作者：
Neto, Isabel F. F. [1 ]
Soares, Helena M. V. M. [1 ]
机构：
[1] Univ Porto, Dept Engn Quim, Fac Engn, REQUIMTE,LAQV, Porto, Portugal
来源：
SEPARATION SCIENCE AND TECHNOLOGY | 2018年 / 53卷 / 18期
关键词：
Printed circuit boards; Ag recovery; Pb recovery; Cu purification; Al recovery; PRINTED-CIRCUIT BOARDS; PRECIOUS METALS; RECYCLING COPPER; HIGH-PURITY; RECOVERY; TIN; PCBS; GOLD; HYDROMETALLURGY; SCRAP;
D O I：
10.1080/01496395.2018.1482342
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
A simple, zero-waste and flexible hydrometallurgical process for recycling the main base metals (Al, Cu and Pb) plus Ag from a multi-metal leached solution with high efficiency (97, 94, 96 and 100% for Ag, Pb, Cu and Al, respectively) and significant purity (42, 97, >= 98 and 78% for Ag, Pb, Cu and Al, respectively) was developed. First, Ag and Pb were recovered by sequential precipitation, as AgCl and PbSO4, respectively. Then, Cu and Al were purified sequentially by ion-exchange and alkaline precipitation from the eluate and raffinate, respectively. The wastewaters, containing mainly Na (99.9%), can be also recycled.
引用
收藏
页码：2961 / 2970
页数：10
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