Corrotech supplies most advanced industrial bag filters that are used in the Zinc Fume Extraction system. The zinc fumes enter uniformly by the side distribution chamber from the bottom, where heavier particles drop immediately into the hopper. Lighter particles rise and are collected on the outer side of the tubular bags while clean air passes through the fabric and is collected to the fan by the filter top plenum and outlet side chamber.
Bag cleaning is automatic by means of compressed air emitted by solenoid valves. Solenoid valves periodically emit a burst of compressed air into the bags. This pulse of air rapidly expanding down into the filter bags sets up a shock wave, which flexes the felt. Dislodged dust drops into the hopper, where it is discharged. The cleaning cycle is automatically repeated by an adjustable timer.