Egyedi hulladékszemcsék instacioner és stacioner mozgásának vizsgálata nyugvó levegőben

Abstract

The 3B Hungary Kft. and the Institute of Raw Materials Preparation and Environmental Processing of the University of Miskolc develop a new municipal solid waste processing plant with a newly invented separator in the region of Zalaegerszeg, Hungary. This separator combines three widely used separators (magnetic, eddy current and two types of airflow separators) without the connecting belts and feeders. The fundamental phenomenon of particle motion in quiescent and flowing air is really important for the design of such a separator. Therefore, a systematic experimental series had been carried out with expediently selected discrete municipal waste particles. The physical properties of the model particles were measured. The particles were dropped down from a height of 16 m in quiescent ambient air and the settling was captured by a digital camera. The time -velocity diagram was determined by a developed method based on image analysis. The relaxation time characterising the unsteady-state settling and the terminal settling velocity characterising the steady-state one had been determined by curve fitting.