Smelting flue gas fans are designed for continuous operation at temperatures up to 450 °C and corrosive atmospheres containing sulfur and heavy-metal vapors.
These centrifugal fans deliver 20,000–200,000 CFM at pressures to 10 kPa, supporting flue gas extraction, thermal oxidizer feed, and heat-recovery boiler operation.
Variable frequency drives (VFDs) provide load-responsive control, modulating airflow to match furnace output and optimize heat recovery efficiency.
Construction features include high-alloy impellers, ceramic coatings, split-casing access, and external bearing cooling, ensuring durability and minimal downtime in harsh smelting environments.