Processing of Used Small Electronic Household Appliances
As opposed to large household appliances,in the processing of which dissambling has an important role,this possibility is pushed into the background as the size decreases.The practicable solution is physical liberation of the used small electronic household devices (by comminution) and separation of the liberated components according to their physical properties.In the first phase of the experimental work the structural/material composition of the typical products (mixer,kitchen robot,hair dryer,coffee machine,iron,bread toaster,vacuum cleaner,oil fryer) was determined.In the second phase a physical iiberability test for each appliance using a rotary shear/shredder for crushing and a hammer shredder for milling was carried out.In the third phase the experimental separability tests using an air classifier and a shaking air table,as well as an eddy-current and an electrostatic separator were performed.In the present paper the results obtained using the air classifier and the electrostatic separator,are reported.To follow the life of a grain a new methodological procedure was elaborated.The particle size fractions after comminution were sorted into material fractions (copper,aluminium,plastics,etc.),then separated,and finally the recovery of the material components in the products were determined.Furthermore,the joint separability was investigated from two points of view: 1) for grain fractions and 2) for each waste appliance.According to the tests carded out so far,it was established that it is reasonable to form appliance groups by selection (e.g.mixer,iron,bread toaster and similar appliances form the first group,while the sandwich oven,hair dryer and similar compact appliances form the second group) and to process them separately.
Physical liberation Shredder Air classifier Electrostatic separator
B.Cs(o)ke J.B(o)hm Zs.M(a)rkus K.Ferencz E.T(o)r(o)k
Institute of Raw Material Preparation and Environmental Processing,University of Miskolc,Miskolc-Egyetemv(a)ros,Hungary
国际会议
XXIV International Mineral Processing Congress(第24届国际矿物加工大会)
北京
英文
3529-3539
2008-09-24（万方平台首次上网日期，不代表论文的发表时间）