摘要
电子废弃物的减量化、无害化和资源化工作日益受到世界各国的重视和关注,采用机械物理方法对电子废弃物进行资源化是目前主导的方法。利用涡电流分选机对铜、铝和塑料的标准样进行了分选,通过调节进料速度、转子速度和皮带转速,可以得到分选效率达到95%以上。基于颗粒的电导率和密度是影响分选的两个重要因素,研究了铜和铝的分选,得到在相同的操作条件下,不同金属的偏离距离有明显的不同。同时颗粒的形状和粒度对试验结果也有较大的影响,薄片状颗粒较其它形状颗粒更易被分选出来;大粒度的颗粒分选效率更高。最后借助高速动态分析系统建立了颗粒分选的动力学方程。研究为进行电子废弃物中金属和非金属的分选提供了理论指导。
The reduction,innoxiousness and reutilization of electronic scrap（ES） are increasingly attracting attentions from the whole society,adopting the mechanical method to reutilize ES is the leading means.The standard samples of the metals and non-metals are separated by an eddy-current separator,and a separation efficiency of 95% can be obtained when the operation factors,mainly feeding speed,rotor speed and belt rotational speed,are proper.Based on the conductivity and density of the particles being two important factors to influence the separation results,the separation of different metals is studied with a principle that the deflection of different metal particles has great difference under the same operation conditions.It is shown that the shape and size of particles have great effect on the experimental results lamellar particles are separated more easily than the other particles,and big particles have the much higher separation efficiency.Finally,the dynamic equation of the particle separation is established by use of MEMRECAM Ci3 moving particle analyzer.This study provides some guidance of the theory for conducting separation between metals and non-metals of ES.
出处
《中国资源综合利用》
2005年第12期22-25,共4页
China Resources Comprehensive Utilization
关键词
电子废弃物
分选
涡电流分选机
electronic scrap
separation
eddy-current separator
