Modelling the reduction of an iron ore-coal composite pellet with conduction and convection in an axisymmetric temperature field

Shi, Jingyu, Donskoi, E., McElwain, D. L. S and Wibberley, L. J. (2005) Modelling the reduction of an iron ore-coal composite pellet with conduction and convection in an axisymmetric temperature field. Mathematical and Computer Modelling, 42 1-2: 45-60. doi:10.1016/j.mcm.2005.05.014

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Author Shi, Jingyu
Donskoi, E.
McElwain, D. L. S
Wibberley, L. J.
Title Modelling the reduction of an iron ore-coal composite pellet with conduction and convection in an axisymmetric temperature field
Journal name Mathematical and Computer Modelling   Check publisher's open access policy
ISSN 0895-7177
1872-9479
Publication date 2005-07
Sub-type Article (original research)
DOI 10.1016/j.mcm.2005.05.014
Volume 42
Issue 1-2
Start page 45
End page 60
Total pages 16
Place of publication Kidlington, Oxford, United Kingdom
Publisher Pergamon
Language eng
Abstract A mathematical model of the coal-based direct reduction process of iron ore in a pellet composed of coal and iron ore mixture is investigated using a finite-control volume method. Heat transfer by conduction in the solid, convection by gaseous media inside, and radiation from the surroundings of the pellet are included in the model. The pellet is assumed to be spherical initially and the temperature around the pellet is taken to be symmetric about an axis passing through the centre. The parameters of the process, such as thermal conductivity, specific heats, and heats of the reaction, are all temperature dependent. The shrinkage/swelling of the pellet is also considered. We find that the effect of convection on the temperature and on the overall average reduction is small. However, the effect on the local concentration of the reaction components is significant. We predict that a uniform surrounding temperature field around the pellet yields a better average reduction.
Keyword Control volume
Iron ore direct reduction
Composite pellet
Axisymmetric heat transfer
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: ERA 2012 Admin Only
Earth Systems Science Computational Centre Publications
 
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Citation counts: TR Web of Science Citation Count  Cited 12 times in Thomson Reuters Web of Science Article | Citations
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Created: Thu, 13 Oct 2011, 10:59:55 EST by Dr Jingyu Shi on behalf of Earth Systems Science Computational Centre