Patent ID: 7757863
Filing Date: 2010-07-20
Classification: B03B,B07B,C03B,Y02P,Y02W,Y10S

Abstract:
1. A method for obtaining mixed color cullet from a supply of waste material comprising: receiving the waste material comprising ferrous material, ceramic material, and mixed color cullet comprising green glass, flint glass and amber glass; utilizing a first optical sorter to determine the characteristics of the received waste material; removing at least a portion of the ferrous material and the ceramic material; sorting the mixed color cullet to provide a second mixed color cullet comprising: (i) about 40% to about 90% by weight flint glass, (ii) about 5% to about 40% by weight amber glass, and (iii) about 1% to about 50% by weight green glass; utilizing a second optical sorter in communication with the first optical sorter to compare the characteristics of the sorted mixed color cullet to determine at least one of the amount of ferrous and non-ferrous materials that has been removed from the received waste material; and providing data that can be used to certify the composition of the second mixed color cullet.