E-waste Recycling In The Study Of Metal Elements

In the rapid development of science and technology today, a variety of electronic products for our life to bring the convenience, add color, everything with each advantage is a disadvantage, at the same time as the electronic product updates faster and the formation of large amounts of electronic waste to our living environment and body health threat, and have a serious waste of resources, so the how to take proper and effective methods of electronic waste recycling is imminent problems. At home and abroad for electronic waste treatment technology has been nearly mature, through crushing, sorting and other pretreatment technology can realize the metal and non-metal roughly separated, and components reuse. But a wide variety of different waste, electronic waste metal component and content of the difference, is not conducive to the electronic rubbish resource maximization, thus electronic waste metal ingredient in fast, efficient quantitative analysis to the whole resource system is very important.Based on the analysis and comparison of the existing domestic and international electronic waste disposal technology and quantitative analysis of metal elements on the basis of the status quo, in support of environmental protection, waste utilization concept, through a large number of survey, put forward by microwave digestion of sample pretreatment, using ICP-OES by inductively coupled plasma atomic emission spectrometric analysis method of waste circuit board metal Cu and Zn metal quantitative analysis. Experiments Cu and Zn content and related data in the literature are basically the same, the method can get better accuracy, but also has small labor intensity, less reagent dosage, short testing period etc.. The metallic elements in waste circuit boards were based on quantitative analysis, this paper adopts a single temperature ignition and temperature burning method for metal extraction of Cu, the experimental results show that, compared with the single ignition temperature ignition temperature subsection can extract high purity metal Cu, temperature subsection method for extracting crude Cu burning. Through the analysis on the experimental results, this paper in Tianjin City Jia Veolia Environmental limited company as the object, the extraction temperature subsection burning metallic element Cu method of promotion, this scheme has entered the discussion stage. This paper approaches we waste to treasure, seek economic benefit maximization goal gave direction.