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Paper Details

REMODIFICATION IN THE OXIDE FEED SYSTEM FOR MIDREX DIRECT REDUCTION SHAFT FURNACE OF THE DELTA STEEL COMPANY

Oluwafemi O Olayebi

Journal Title:Global Journal of Engineering Science and Research Management (GJESRM)
Abstract


The oxide pellets feed from the day-bin goes to charge-bin (top of the furnace) through the flexowell conveyor belt. A mesh at the inlet to the furnace prevents direct entry of the oversize into the furnace. These oversized materials accumulate occasionally cause blockage hence impeding material flow. Accumulated oversized materials spill out from the 65m platform of the shaft furnace. Also oversize pellets entering the furnace through the by-pass chute from the charge bin create channeling, bridging and excessive fines. Persistent bridging can lead to uneven burden temperature distribution that can result in hot spots and clusters within the furnace which can have dire consequences on the entire production campaign. Wet materials during monsoon season create blockages at the transfer chute of the oxide feed system impeding free flow of oxide pellets to the charge bin from the flexowell. Modifications were carried out in the oxide material handling system so as to forestall any incidences that may lead to bridging or channeling that could result in downtimes or plant shut downs.

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