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The Wetting Of Liquid Iron Carbon On Aluminate Minerals Formed During Coke Dissolution In Iron, B. J. Monaghan, M. Chapman, S A. Nightingale
The Wetting Of Liquid Iron Carbon On Aluminate Minerals Formed During Coke Dissolution In Iron, B. J. Monaghan, M. Chapman, S A. Nightingale
Faculty of Engineering - Papers (Archive)
From previous studies by the authors on the effects of mineral layer formation at coke-iron boundary during coke dissolution it was found that the composition and morphology of the layer had a profound affect on the kinetics of reaction. Moreover it was found that the layer was primarily composed of calcium aluminate’s that over time (0-120 minutes) became progressively enriched with calcium. The minerals identified in the layer were alumina, CA6, CA2 and CA. Given that coke dissolution in iron is a heterogeneous reaction it can be expected that the wetting of iron on these minerals would have a significant …
Formation Of A Mineral Layer During Coke Dissolution Into Liquid Iron And Its Influence On The Kinetics Of Coke Dissolution Rate, M. Chapman, B. J. Monaghan, S A. Nightingale, J. Mathieson, Robert J. Nightingale
Formation Of A Mineral Layer During Coke Dissolution Into Liquid Iron And Its Influence On The Kinetics Of Coke Dissolution Rate, M. Chapman, B. J. Monaghan, S A. Nightingale, J. Mathieson, Robert J. Nightingale
Faculty of Engineering - Papers (Archive)
The formation and development of the mineral layer that forms between coke and liquid iron during carbon dissolution has been characterised. Coke particles (-2mm, +0.5mm) were added to the top surface of an iron 2 mass% C melt at representative ironmaking temperatures, for periods of time between 2 minutes and 120 minutes, before being quenched. The quenched samples were then sectioned and the solidified coke-melt interfacial region analysed in the SEM. Analysis showed that a mineral layer was present at the interface at all experimental temperatures (1450-1550oC) from 2 minutes and persisted beyond 120 minutes. The mineral layer was found …