电子废弃物中贵金属化学回收新技术研究

Study on new chemical recovery technology of precious metals from electronic waste

电子废弃物具有双重属性,一方面对于环境的破坏程度较大,另一方面却有极高的回收价值。如果能够做好相关工作,提高电子废弃物中贵金属的回收力度,那么电子废弃物的回收产业将会成为一个新的经济增长点。电子废弃物中贵金属的回收需要经过两个阶段,首先是进行预处理,然后进行贵金属的提取。近年来经济进步,科技水平提升,电脑和手机产品更新换代很快,因此产生了大量的电子废弃物,另外一些先进的电子仪器设备也不断因为产品的更新换代而被淘汰,这种情况下,大量的贵金属就被集中到电子废弃物中,形成了新的经济增长点。本文主要探讨电子废弃物中贵金属回收的常规技术,并对新技术进行展望。

Electronic waste has dual attributes.On the one hand,it has great damage to the environment,on the other hand,it has high recycling value.If relevant work can be done to improve the recycling of precious metals in e-waste,the recycling industry of e-waste will become a new economic growth point.The recovery of precious metals from e-waste needs to go through two stages:first,pretreatment,and then extraction of precious metals.In recent years,with the economic progress,the improvement of scientific and technological level and the rapid upgrading of computer and mobile phone products,a large amount of electronic waste has been generated.In addition,some advanced electronic instruments and equipment have been eliminated due to the upgrading of products.In this case,a large number of precious metals have been concentrated in electronic waste,forming a new economic growth point.This paper mainly discusses the conventional technology of precious metal recovery from electronic waste,and looks forward to the new technology.