Peddolla Prachethan Kumar, Yogish Sooryanarayan Rao, Sagar Chandra Barman, Gururaj Hosabettu, Sekhar Vadarevu, and Madhu Ranjan:
Influence of operational parameters on the performance of the Corex reduction shaft
Corex, reduction shaft, reduction gas flow, reduction gas temperature, pressure drop, gas distribution, resistance to gas flow
Smelting reduction (SR) processes were developed with the objective of eliminating the need for coke, since the good quality coking coal reserves are limited and depleting fast. The SR processes operate with coal to meet the thermal and reducing requirements. Corex is one of such SR processes which emerged as a commercially viable iron making technology. It consists of two reactors: the reduction shaft and the melter-gasifier. The reduced iron bearing material from the reduction shaft is charged into the melter-gasifier for melting. The performance of this process is thus highly dependent on the efficiency of the reduction shaft. The performance of the reduction shaft is measured by the degree of metallization of the direct-reduced iron (DRI) product. The metallization is dependent on operational parameters and on quality and type of the iron bearing material charged. Other than the quality of the iron bearing material, operational parameters also influence the performance of the shaft and the degree of metallization of the shaft product. ...
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