Perspectives for the recovery of rare earths from end-of-life fluorescent lamps

来源 :Journal of Rare Earths | 被引量 : 0次 | 上传用户:otto0127
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
This vision paper discusses the advantages and disadvantages of the three main options for the recycling of rare-earth elements from end-of-life fluorescent lamps:(1) direct re-use of the lamp phosphor mixture;(2) separation of the lamp phosphor mixture into the different phosphor components;(3) recovery of the rare-earth content. An overview is given of commercial activities in Europe in the domain of recycling of materials from end-of-life fluorescent lamps and the recovery of rare earths from these lamps. The collection of end-of-life fluorescent lamps is currently driven by a legal framework that prohibited the release of mercury to the environment. The contaminations of the lamp phosphor powders by mercury and by small glass particles of crushed fluorescent lamps are limiting factors in the recycling process. Research should be directed to an advanced clean-up of the reclaimed lamp phosphor fraction, and in particular to the removal of mercury and glass fragments. The recovery of rare earths from the lamp phosphors could be facilitated by taking advantage of the differences in resistance of the different lamp phosphors by chemical attack by inorganic acids and bases. This vision paper discusses the advantages and disadvantages of the three main options for the recycling of rare-earth elements from end-of-life fluorescent lamps: (1) direct re-use of the lamp phosphor mixture; (2) separation of the lamp phosphorous mixture into the different phosphor components; (3) recovery of the rare-earth content. An overview is given of commercial activities in Europe in the domain of recycling of materials from end-of-life fluorescent lamps and the recovery of rare earths from these lamps. the collection of end-of-life fluorescent lamps is currently driven by a legal framework that prohibited the release of mercury to the environment. The contaminations of the lamp phosphor powders by mercury and by small glass particles of crushed fluorescent lamps are limiting Factors in the recycling process. Research should be directed to an advanced clean-up of the reclaimed lamp phosphor fraction, and in particular to the removal of mercury and glass fragments. The recovery of rare earths from the lamp phosphors could be facilitated by taking advantage of the differences in resistance of the different lamp phosphors by chemical attack by inorganic acids and bases.
其他文献
该文从挂篮荷载计算、施工流程、支座及临时固结施工、挂篮安装及试验、合拢段施工、模板制作安装、钢筋安装、混凝土的浇筑及养生、测量监控等方面人手,介绍了S226海滨大桥
随着我国民航事业的快速发展,空中交通流量逐年增加,仪表着陆系统作为关键导航系统之一,长期保障了飞机的起飞着陆安全.然而,随着仪表着陆系统服役时间的增长,我国许多机场的
General Manager of Inner Mongolia Baotou Steel Rare Earth(Group)Hi-Tech Co.,Ltd The article was edited and translated according to the presentation record of Mr
期刊
2014年对于国家来说是深化改革的一年,从改革方式,到政府转型方式,再到国家治理方式,都在发生着对中国未来发展意义深远的改变。
期刊
本文通过对某油库存在的危险、有害因素进行分析与辩识,评估油库发生安全生产事故的可能性及其严重程度,制定合理可行的安全技术措施和管理措施,以降低事故发生率.
党的十五大确立了“依法治国”的基本方略以后,我国的法制建设有了很大的进步和发展,公民的法律意识有了很大的增强,海事行政复议和海事行政诉讼逐年增加,对海事行政执法机关
随着移动公司本地政企专线的增长,网络资源利用成为网络建设必须考虑的因素,本文结合某地市移动网络状况,分析不同的专线接入技术,提出GPON接入技术在本地移动政企网络建设应
What is the post-WTO era?China became one member of WTO on 10 November 2001,followed by five years’transitional period.Post-WTO era should start from 2007 afte
期刊
青藏铁路GSM-R承载ITCS列控系统,通过十多年运行,核心网和无线网在扩能过程中,如何保障ITCS运行的安全,提升GSM-R系统的技术性能、可靠性和可维护性,是需要重点关注的课题.本