Abstract
In Japan, about 5 million of automobiles are scrapped recently and the processing of these scrapped automobiles generates a huge volume of waste known as ASR (Automobile Shredder Residues). At this stage, much of ASR is filled in disposal sites or is burned up to the harmless ash. The disposal of ASR by landfill is to keep the noxious substances under the grand and it means to give some loads to the soil environment. As for the disposal by mass burning, the particular equipment for waste gas is needed in incinerators so as to suppress the dioxins. To overcome these problems, it is necessary to recycle and reduce the noxious substances in ASR for the soil and atmosphere environment. In this study, the experiments on the recovery of copper, which is considered to be a catalyst of dioxins, were carried by a dry tower mill and an electrostatic separator from the light materials of ASR. It was found that the solidified light materials from ASR could be easily comminuted to less than 1 mm. Besides the copper content of a comminuted product with the size fraction of-1 mm could be reduced to 0.38% by electrostatic separation.
