Blow-Through Rotary Airlock Valves for Steel & Sponge Iron Plants

UGES blow-through rotary airlock valves deliver rugged in-line material injection for iron ore fines, DRI dust, and metallurgical byproducts in U.S. steel and sponge iron plants. The closed-pocket blow-through mechanism provides combined airlock and conveying functions for high-temperature, high-abrasion steel plant applications.

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Blow-Through Rotary Airlock Valves Key Specifications

Rotor Design

Closed-pocket blow-through rotor with 6 heavy-duty blades and deep pockets sized for high bulk-density iron ore fines and metallurgical dust injection.

Housing Material

Ni-hard cast iron housing with flame-hardened bore and integrated blow-through air manifold for maximum abrasion resistance in steel plant environments.

Inlet Size Range

250mm to 500mm heavy-duty flanged inlets with oversized blow-through air ports for high-volume metallurgical material injection into conveying lines.

Pressure Rating

Conveying air pressure up to 2.0 bar with heavy-duty shaft seals rated for the high differential pressures of steel plant pneumatic conveying circuits.

Temperature Range

High-temperature variant rated to 320°C for direct injection of hot DRI kiln dust and sinter fines into pressurized return conveying lines.

Blade Configuration

6-blade closed-pocket rotor with bolt-on hardened alloy steel replaceable tips and deep-radiused pockets for complete material purging during blow-through.

Industrial Applications

DRI Dust Pneumatic Injection
Injects captured DRI kiln dust directly into pressurized return conveying lines using blow-through air, eliminating separate screw feeders in the dust recovery circuit.
Blast Furnace Injection Coal Feed
Meters and injects pulverized coal directly into blast furnace tuyere injection lines, providing combined airlock and feeder functions in a compact installation.
Steel Mill Fume Dust Re-injection
Feeds collected fume dust from bag filter hoppers into pressurized conveying lines for recycling back into EAF or BOF steelmaking vessels.

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