We have a used Guidetti Sincro 530 Cable Granulator complete with a Forrec 600 Pre Shredder for sale.  This compact Guidetti cable granulation system separates copper and aluminum from insulating materials such as plastic, rubber or paper.  It also separates copper and aluminium from radiators.  The manufacturer claims production capacity of 300 to 400kg per hour input.  A good starting point if you want to add cable granulation to your operation.