The volatized contaminants are transported to the filter house for removal of airborne particulate.  The primary section is mounted ahead of the bag modules on the same frame.  Coarse particles are removed to relieve particle loading and abrasion in the secondary baghouse chamber.  The secondary chamber utilizes 224 Polyamide P-84 bags with a maximum temperature rating of 500°F.  The compact portable primary fabric filter dust collectors provide more cloth area per unit size through the use of 10-foot bags.  Exhaust gases pass through bags, depositing particles on the outside.  Exiting gases flow into the top half of the plenum, through the central passage to the exhaust fan.  All welded, reinforced housing is coated inside with epoxy sealer to protect against corrosion.  Bag access panels are tightly sealed to maintain efficiency.  A 25-hp Sullair Compressor furnishes the air supply for the air cannons, baghouse pulse system, and air seals on the plant.  No section of the filter house is shut down as bags are continuously cleaned by a reverse pulse-jet.  This prevents formation of excessive dust cakes.  The pulse-jet is a sharp blast of compressed air jetted through a venturi on the top of the bag.  The sudden influx of air ripples the bag, dislodging the dust, which falls to the collecting hopper.  A drag type conveyor moves collected dust across the floor of the filter house to the dust screw augers, for return to the rotary drier and discharge system.