Patent ID: 7900778
Filing Date: 2011-03-08
Classification: B03C,B65G,E02F,E21C,Y10S

Abstract:
1. A system for rejecting a portion of non-metallic particulate material containing a piece of tramp metal, the system comprising: a first conveyor having a discharge end, the discharge end positioned to discharge particulate material from the first conveyor to an intake opening; a metal detector positioned adjacent to the first conveyor and upstream a travel distance from the discharge end; a redirection device provided at the discharge end of the first conveyor, the redirection device comprising a second conveyor positioned so that particulate material discharged from the discharge end of the first conveyor is deposited onto the second conveyor, the second conveyer having a first end positioned over the intake opening and a second end positioned away from the intake opening, the second conveyor further being bidirectional such that the second conveyor operates in a first direction to direct the particulate material into the intake opening and in a second direction to direct the particular material away from the intake opening; and a controller comprising at least one processor, the at least one processor operative to: