Stainless Steel Electric Arc Furnace

Application

Stainless Steel Electric Arc Furnace. Two 200-ton furnaces with a 4th hole and canopy evacuation system. Design gas flow rate 1,200,000 acfm; air-to-cloth 3.5/1 through a Wheelabrator-style shaker baghouse.

Optimization Potential

High pressure drop across the baghouse (15" H2O) causing poor meltshop evacuation. Customer had to increase power to the fans to try to keep the shop clean.

Solution

After testing several different filter alternatives, including woven TERYLENE®, seamless knitted polyester, and polyester needlefelts, GORE® membrane/ polyester felt filter bags were installed.

Results

Pressure drop reduced to 5" H2O. Meltshop is clean. Bag life longer than five years. Customer saves 30,000 pounds sterling (approximately $45,000) per inch of reduced pressure drop.