Double Flap Damper for Steel & Sponge Iron Plants

UGES Double Flap Dampers for U.S. steel and sponge iron plants provide gas-tight isolation and material discharge control in blast furnace dust catchers, sinter plant de-dusting hoppers, and DRI product discharge systems. The dual-flap design ensures reliable sealing against pressurized reducing gases and abrasive iron-bearing materials.

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Double Flap Damper Key Specifications

Blade Material

Hardox 500 / manganese steel for iron ore and DRI pellet abrasion resistance

Temperature Rating

Up to 350°C for sinter dust discharge; 250°C for DRI product handling

Actuation Type

Pneumatic cylinder with nitrogen purge for explosive atmosphere zones

Size Range

400 mm × 400 mm to 1800 mm × 1800 mm for hopper and chute outlets

Sealing

Dual-flap nitrogen-purged seal for gas-tight isolation in BF gas and DRI circuits

Cycle Life

Rated for 750,000+ cycles with heavy-duty self-aligning bearing assemblies

Industrial Applications

Blast Furnace Dust Catcher Discharge
Controls gravity discharge of coarse dust from BF gas dust catchers while maintaining gas-tight seal against pressurized blast furnace top gas.
Sinter Plant De-Dusting Hopper
Discharges collected iron-bearing dust from sinter plant de-dusting hoppers for recycling back to the sinter mix without gas leakage.
DRI Product Discharge Isolation
Isolates hot DRI pellet discharge chutes from the reactor vessel, preventing process gas escape during product extraction and transfer.

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