Patent ID: 8690086
Filing Date: 2014-04-08
Classification: B03B,B09B,C22B,Y02P,Y02W

Abstract:
1. A method for processing a waste stream comprising the steps of: receiving the waste stream consisting of one or more of automobile shredder residue or whitegood shredder residue, and comprising non-ferrous metal; processing the received waste stream with an air separator to separate the waste stream into a light fraction waste stream and a heavy fraction waste stream; and processing the heavy fraction waste stream in a destoner to increase the concentration of non-ferrous metals in the heavy fraction waste stream as compared to the concentration of non-ferrous metal in the waste stream; wherein automobile shredder residue is the waste stream left over after recovering most of the ferrous and non-ferrous metals from shredded automobiles and whitegood shredder residue is the waste stream left over after recovering most of the ferrous and non-ferrous metals from shredded machinery or large appliances and wherein the concentration of non-ferrous metals in automobile shredder residue or whitegood shredder residue is less than the concentration of other components in the automobile shredder residue or whitegood shredder residue.