Electric Arc Foundry Furnace

Application

Electric arc foundry furnace.

Optimization Potential

A new collector was needed to ventilate another furnace. Baghouse media needed to survive significantly range of operating conditions. The process is divided into two phases: melting and boiling. During the melting phase, the fume volume (grain loading) is high and airflow requirements low. During the several-minute boiling phase, airflow volume is very high and the grain loading becomes very low, but the fume is a very fine particulate.

Solution

GORE® membrane/heavy duty polyester filter bags were installed in the electric-arc foundry furnace collector.

Results

When the grain loading was high and air volumes low, the GORE® membrane was able to handle the high grain loading conditions. During the boil phase, the air volume pushed the air-to-cloth ratio past 7:1 with a very fine fume. Again GORE® membrane filter bags handled the conditions with no problems. The bags cleaned down being able to handle the next melt phase of the process. The GORE® membrane filter bags have continued to work well and are still in service after nearly four years.