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For Caribbean Ispat Limited, Roberts & Schaefer furnished
engineering, procurement, and structural and mechanical
erection services at the Direct Reduction Facility III (DR3),
including iron oxide screening, a storage and reduction
furnace feed system, product conveying, storage and reclaim
systems, and a ship loading feed conveyor system. Due to
the highly reactive DRI, product storage bins and the product
reclaim storage building required gastight slide gates.
A series of conveyors receive iron oxide from mobile hoppers,
conveyors, and a ship unloader. The oxide moves to either
a stacker-reclaimer for storage or to a set of oxide screens.
Screened fines move to a stockpile. Sized oxide is stored
in day bins, which have weigh belt feeders on each bin discharge.
Oxide is then conveyed to the reduction furnace, from which
the DRI product then moves to storage bins. The bins are
equipped with vibrating feeders that feed the DRI product
to a screening station, from which it moves to a bin for
truck loading.
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