A review on nut coke utilisation in the ironmaking blast furnaces

Dharm Jeet Gavel

    Research output: Contribution to journalArticleScientificpeer-review

    21 Citations (Scopus)
    237 Downloads (Pure)

    Abstract

    In the ironmaking blast furnaces, nut coke (10–40 mm; 2–23 wt-%) is charged together with the ferrous burden. A systematic review is performed to understand the effects of nut coke use on the permeability, thermal reserve zone (TRZ), reduction kinetics and softening & melting behaviour. State of the art techniques for enhancing reactivity and to lower TRZ temperature are discussed. To utilise nut coke effectively, need of correlational research is expressed on its behaviour with different burden chemistry, carbon ordering, ash content and distribution style. Challenges for higher nut coke utilisation like decrease in regular coke layer thickness and unconsumed fines in lower part of the furnace are pointed out. The scope of further research is marked via this review.
    Original languageEnglish
    Pages (from-to)381-387
    JournalMaterials Science and Technology
    Volume33
    Issue number4
    DOIs
    Publication statusPublished - 2017

    Keywords

    • Nut coke
    • Permeability
    • Cohesive zone
    • Reactivity
    • Blast furnace hearth

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