|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||8th International Symposium on High Temperature Metallurgical Processing
||Effect of Carbon to Hematite (Fe2O3) Molar Ratio on the Reduction Behaviour of Iron Ore-coal Composite Pellets in Multi-layer Bed Rotary Hearth Furnace (RHF)
||Srinibash Mishra, Gour Gopal Roy
|On-Site Speaker (Planned)
Effect of carbon to hematite molar ratio has been studied on the reduction behaviour of iron ore-coal composite pellets reduced at 1250°C for 20 minutes in a laboratory scale multi-layer bed Rotary Hearth Furnace (RHF). Reduced pellets have been characterized through the measurement of degree of reduction, metallization, porosity, shrinkage, phase analysis by XRD, and compressive strength. Pellets with optimum carbon to hematite molar ratio (C/Fe2O3 = 1.66) that is much below the stoichiometric carbon required for direct reduction of hematite yielded maximum reduction, better carbon utilisation, and productivity. Top layer exhibited higher reduction at comparatively lower carbon level (C/Fe2O3 <2.33) in the pellet; while bottom layer exceeded top layer at higher carbon level (C/Fe2O3 >2.33). Compressive strength of the partially reduced pellet with optimum carbon content (C/Fe2O3 = 1.66) showed that they could be potentially used as an alternate feed in a blast furnace or any other smelting reactor.
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