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Waste-gas scrubber design engineering for taconite pellet plant

About this project

client
U.S. Steel Corporation
location
Minnesota
cost
$28 million
completion date
2006

To meet environmental permit requirements, U.S. Steel needed to reduce emissions from the waste-gas discharge stacks of the pelletizing grate at its Keewatin Taconite facility.

Barr designed the layout for the new system, which included new buildings, two wet scrubbers, two fans and motors, process ductwork, effluent handling, and filter-press systems. We also designed new structural supports and foundations for buildings and equipment, effluent piping and pumps, a water treatment system, process ductwork, hydrated lime unloading and storage, and scrubber-sludge handling and loadout, as well as electrical power distribution, instrumentation, and motor control centers.

To minimize disruptions to production, most of the construction took place while the plant was in operation. Barr also provided similar services at U.S. Steel’s Minntac facility to remove the existing emissions-control device and add a new waste-gas scrubber.

Key team members

Timo Peraaho

Senior Structural Engineer

Dave Mickelson

Senior Mechanical Engineer

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