利用氧化精炼法回收废旧电器电子设备中的贵金属

IF 4.6 Q2 GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY
Recycling Pub Date : 2023-10-16 DOI:10.3390/recycling8050080
Eunmi Park, Minji Kim, Min-Wook Pin, Hyunsik Park, Yong-Hwan Kim
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引用次数: 0

摘要

本研究探讨了利用火法冶金技术,利用WEEE回收,从废旧电器电子设备中回收和浓缩贵金属,即钯(Pd)和金(Au)。主要目标是优化精炼参数,包括气体压力、温度和气体成分的变化,以最大限度地从回收材料中提取和纯化贵金属。通过一系列综合表征技术,包括微观结构分析、元素组成评估和金属浓度测量,本研究仔细研究了氧化精炼的潜力。结论性的发现强调了氧化精炼在提高从废弃印刷电路板(pcb)中回收金属的效率和有效性方面的显着潜力,特别强调了Pd和Au的浓度。这项研究不仅强调了氧化精炼的前景,而且还得出结论,优化工艺参数,如N2/O2混合气体压力为4 L/min,工艺时间为40 min,温度为1400℃,对于实现从电子废物中回收金属的最高效率至关重要,特别是钯和金等贵金属。它还有助于可持续地管理电子废物和战略性地提取贵重金属。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Precious Metal Recovery from Waste Electrical and Electronic Equipment through Oxidative Refining
This study delves into the application of oxidative refining for the recovery and concentration of precious metals, namely palladium (Pd) and gold (Au), from waste electrical and electronic equipment by WEEE recycling, leveraging pyrometallurgical techniques. The primary objective is to optimize refining parameters, encompassing variations in gas pressure, temperature, and gas composition, to maximize the extraction and purification of precious metals from recycled materials. Through an array of comprehensive characterization techniques, encompassing microstructural analysis, elemental composition assessment, and metal concentration measurement, this study scrutinizes the potential of oxidative refining. The conclusive findings underscore the remarkable potential of oxidative refining in augmenting the efficiency and effectiveness of metal recovery from waste printed circuit boards (PCBs), with a pronounced emphasis on the concentration of Pd and Au. This research not only highlights the promise of oxidative refining but also concludes that optimizing process parameters, such as a N2/O2 mixed gas pressure of 4 L/min, a process time of 40 min, and a temperature of 1400 °C, is imperative for achieving the highest efficiency in metal recovery from electronic waste, especially precious metals like Pd and Au. It further contributes to the sustainable management of electronic waste and the strategic extraction of valuable precious metals.
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来源期刊
Recycling
Recycling Environmental Science-Management, Monitoring, Policy and Law
CiteScore
6.80
自引率
7.00%
发文量
84
审稿时长
11 weeks
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