Patent ID: 8813972
Filing Date: 2014-08-26
Classification: B03B,B07B,B07C,B09B

Abstract:
1. A secondary separation system for recyclables for processing a stream from a MRF, Materials Recycling Facility, comprising; a means for conveying; a screen comprising openings greater than about 2.0±1.0 inches in a lateral dimension such that a first fraction comprising material with a lateral dimension less than the screen openings falls through the screen openings and is no longer part of the stream; a first air separation module comprising a first part of positive pressure air and a second part of negative pressure air operating such that the second part transports a fraction comprising material with an apparent density less than a first predetermined number and a lateral dimension greater than the screen openings up and away from the stream wherein the remaining, processed stream consists of matter made up of components with an apparent density greater than the first predetermined number and a lateral dimension greater than the screen openings and wherein the second fraction is separated into a lighter second fraction and a heavier second fraction by the second part of the air separation module wherein the lighter second fraction is conveyed away from the heavier second fraction and wherein the processed stream exiting the first air separation module comprises between about 20% and 40% by weight of recyclable stream material; and a first optical recognition system comprising a first data base operable to distinguish components of the second fraction such that the velocity of the positive pressure air of the first part of the first air separation module is determined by the settings of the optical recognition system and wherein current data acquired by the first optical recognition system is stored in the first data base.