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Air Classification

Air Classification

 Air Classifier

This is the phase where the boiler fuel is separated.  Light, combustible pieces of refuse, called refuse-derived fuel (or RDF) are separated out using an air knife and whisked to a pneumatic tube, and blown into a large storage bin located midway between the Resource Recovery Plant and the electric utility.  Heavier, non-combustible pieces fall through a chute onto a conveyor, eventually to be landfilled.

In terms of tonnage, the RDF accounts for about 70% of the total mass flow of garbage.  This fraction, along  with the 5% of non-ferrous and ferrous metals recovered, means that 75% or more of the garbage entering the system is recovered in one form or another.

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