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Full-Text Articles in Engineering
Determination Of The Thermal Histories Of Coke In A Blast Furnace Through X-Ray Analysis, B. J. Monaghan, Robert J. Nightingale, V. Daly, E. Fitzpatrick
Determination Of The Thermal Histories Of Coke In A Blast Furnace Through X-Ray Analysis, B. J. Monaghan, Robert J. Nightingale, V. Daly, E. Fitzpatrick
Faculty of Engineering - Papers (Archive)
A study has been undertaken to identify the source of coke fines sampled from the deadman area of the blast furnace. Using measurements of the coke crystallite dimension LC, it was established that some of the fines found in the deadman area of a blast furnace were not simply the degradation products of the lump coke in this area. The LC was measured using standard X-ray analysis techniques. The coke fines had a higher LC than the coke lump and therefore have experienced a higher maximum temperature than the associated coke lump. This finding has been interpreted as at least …
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 …
Sulphide Formation During Coke Dissolution In Liquid Iron, Brian J. Monaghan, Michael Chapman, Sharon A. Nightingale, John G. Mathieson, Robert J. Nightingale
Sulphide Formation During Coke Dissolution In Liquid Iron, Brian J. Monaghan, Michael Chapman, Sharon A. Nightingale, John G. Mathieson, Robert J. Nightingale
Faculty of Engineering - Papers (Archive)
An experimental study on mineral layer formation at the coke-iron boundary during coke dissolution has been carried out. In previous articles by the authors the focus was on morphology of layer development and its effects on the kinetics of coke dissolution. In this article the formation of calcium sulphide at the coke-iron boundary is discussed. The compositions and temperatures used in the experimental set up were chosen to represent coke iron mass ratios of the lower zone of an iron blast furnace. SEM images and EDS analysis of the coke-iron interface revealed a mineral layer at the interface. This layer …
The Fundamentals Of Coke Dissolution In The Deadman Area Of The Blast Furnace, Michael Chapman, Brian J. Monaghan, Sharon A. Nightingale, John G. Mathieson, Robert J. Nightingale
The Fundamentals Of Coke Dissolution In The Deadman Area Of The Blast Furnace, Michael Chapman, Brian J. Monaghan, Sharon A. Nightingale, John G. Mathieson, Robert J. Nightingale
Faculty of Engineering - Papers (Archive)
An experimental study characterising mineral layer formation at the coke-iron boundary during coke dissolution has been carried out. In this experimental study coke was added to the surface of an iron-carbon melt. Experiments were carried out at temperatures between 1450 and 1550°C for periods of time between 2 minutes and 120 minutes, before being quenched. Quenched samples were then sectioned and the solidified coke-melt interfacial region prepared for SEM and EDS analysis. SEM images and EDS analysis of the coke-iron interface revealed a mineral layer was present at the interface at all experimental temperatures and times. Further, it was determined …
Coke Dissolution In Liquid Iron - The Effect Of Coke Mineral Matter, Michael Chapman, Brian J. Monaghan, Sharon A. Nightingale, John G. Mathieson, Robert J. Nightingale
Coke Dissolution In Liquid Iron - The Effect Of Coke Mineral Matter, Michael Chapman, Brian J. Monaghan, Sharon A. Nightingale, John G. Mathieson, Robert J. Nightingale
Faculty of Engineering - Papers (Archive)
Metallurgical coke, the primary fuel of the ironmaking blast furnace contains approximately 8-12% mineral matter and carbon. The formation and development of the mineral matter layer that formed between coke and liquid iron during carbon dissolution has been investigated. Coke particles (-2mm, +0.5mm) were added to the top surface of an iron 2 mass% C melt at representative ironmaking temperatures of 1450oC, 1500oC and 1550oC, for periods of time between 2 minutes and 120 minutes, before being quenched. The samples were then sectioned and the coke-iron interface examined in the SEM. The mineral matter layer that formed during the dissolution …