Wire Separation From Automotive Shredder Residue

The investigation discussed in this article concerned the removal of wires and cables fraction contained in automotive shredder residue (ASR) through a newly invented device, called the ‘nail roll’. Series of tests were carried out with three ASR samples of different origin and the influence of the setting parameters of the machine was analyzed. Other separation techniques and their combination with nail roll were also investigated, pursuing the objective of the increasing profit of the entire processing chain. The results indicate that the recovery index achievable by a very cost effective treatment is higher than 70% in the best case for all the three tested samples, while the grade index in the best case is 87% for the first sample, 70% for the second and 35% for the third. Nail roll efficiency is mostly dependent on the properties of the material treated and on its setting based on them.