Patent ID: 8011606
Filing Date: 2011-09-06
Classification: B02C,B03B,B07B,Y02W

Abstract:
1. Portable system for separating and recycling gypsum and non-ferrous waste discharge from a steady stream of comminuted gypsum wallboard, the portable system comprising, in combination: a) a unitary, rigid frame having a set of parallel inclined upper rails running substantially the length of the frame; b) a plurality of legs each having two ends with one end of each leg attached to the frame for supporting the frame inclined rails in an acute angle upward from a generally flat surface providing a frame high end and a frame low end; c) a plurality of frame and support leg cross members; d) a plurality of driving rollers and carrier rollers rotatably attached to the upper rails and spaced along the upper rails; e) a rotating cylindrical drum assembly mounted for rotational movement on top of the frame defining a cylindrical drum longitudinal centerline and a substantially uniform drum diameter and communicating with the driving rollers and carrier rollers, the drum assembly including an open end at the frame high end of the drum assembly with a feed hopper to receive a steady stream of comminuted gypsum wallboard into the open end, and an open end at the frame low end of the drum assembly; f) at least one cylindrical trommel screen assembly fixedly mounted within the drum assembly, each trommel screen assembly sized to fit symmetrically about the drum longitudinal centerline and rotatably turn with the drum; g) at least one gypsum discharge hopper attached to the frame along the longitudinal centerline below the at least one trommel screen; h) first conveyor means for receiving trommel screen gypsum discharge mounted on the frame below each gypsum discharge hopper; i) second conveyor means for receiving non-ferrous waste discharge mounted on the frame below the frame low end drum assembly; j) drum drive means on the frame for driving the drum; k) first conveyor drive means on the frame for driving the first conveyor means; and l) second conveyor drive means on the frame for driving the second conveyor means.