Study on Dynamic Models of the Active Pulsing Air Classification and the Application to Electronic Scraps Recycling
The methodology of active pulsing air separation is a new method for dry material classification.Especially,it is suitable to electronic scraps disposal and re-utilization.By studying the difference of drag coefficients of the particles moving through areas of varying Reynolds numbers,and considering the extra-mass forces acting on the particles in the active pulsing air field,models of the dynamic motion which particles follow were developed.A computer simulation was prepared that showed the traces of particles with different densities and/or diameters,but similar aerodynamic characteristics,as they moved through the turbulent flow,to modify and define the parameters of the models.The simulation was found to predict the observed results with artificial tracing spheres being separated by the laboratory equipment.The separation performance,as being affected by the particles,nature,the air velocity,the pulsing frequency and the air pattern,is discussed.In general,lower density particles are more responsive to variations in airflow velocity.In addition,an industrial scale active pulsing air separator was designed,and it provides a new and efficient method for resource re-utilization in China.
Active pulsing air classification Dynamic models Numerical simulation Technique parameter PCB disposal
Y.Q.He Y.M.Zhao C.L.Duan W.R.Zuo S.L.Song
School of Chemical Engineering and Technology.China University of Mining and Technology,Xuzhou,China.
国际会议
XXIV International Mineral Processing Congress(第24届国际矿物加工大会)
北京
英文
3750-3758
2008-09-24（万方平台首次上网日期，不代表论文的发表时间）