Recycling of gold from waste printed circuit boards

被引：0

作者：

Li, Ruiqing ^{[1
]}

Wang, Wei ^{[2
]}

Wu, Yufeng ^{[2
]}

Zhang, Qijun ^{[2
]}

机构：

[1] College of Materials Science and Engineering, Beijing University of Technology

[2] Institute of Recycling Economy, Beijing University of Technology

来源：

Xiyou Jinshu/Chinese Journal of Rare Metals | 2014年 / 38卷 / 03期

关键词：

Gold; Recycling technology; Waste printed circuit boards;

D O I：

10.13373/j.cnki.cjrm.2014.03.025

中图分类号：

学科分类号：

摘要：

Owing to excellent electrical conductivity, ductility and low contact electrical resistance for inserting connections, gold was widely used in printed circuit boards (PCBs) of electric and electronic equipment (EEE). Both technological innovation and update rate of EEE shortened the average lifespan of EEE. As a result, the amounts of waste PCBs dramatically increased . Therefore, on the basis of the current situation of gold resources in China, recycling gold from waste PCBs received wide concerns. This paper reported the characteristics and recycling values of waste PCBs. An integrated recycling process for gold from waste PCBs was reviewed in detail, including pretreatment, metal enrichment, leaching of gold and gold recovery. Meanwhile, the advantages and disadvantages existed in current recycling methods were summarized, based on a comparative analysis of various technologies from economic benefits, environmental impact, and feasibility of industrialization. The future research trends of recycling technology for waste PCBs would be focused on reducing the costs and pollution, integrating use of multiple techniques, and increasing the recovery rate and purity of gold. Additional research would be needed in searching new processing equipment and environmentally friendly technologies to recover gold from waste PCBs in China.

引用

页码：516 / 526

页数：10

共 45 条

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