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Application of X-ray microtomography to investigate the effect of raw material properties on the kinetics of iron ores granulation
Contreras, Rafael; Evrard, Maxime; Van loo, Frederic et al.
2014In PSA 2014 Manchester- Abstracts
 

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Keywords :
X ray tomography; iron ore granulation; kinetics
Abstract :
[en] In modern ironmaking, granulation is the first step of the sintering process. It is typically carried out in continuous drum granulators using water as a binder, and involves multiple components besides iron ores, such as return fines and other recycled materials (dusts, mill scale, sludges), solid fuel (coke breeze or anthracite) and fluxes (limestone, lime, olivine, dunite or dolomite) (Ball, 1973). As it is necessary to maintain a consistent quality of the granules (size distribution, porosity, strength, etc.) despite of the varying iron ore origins, the question arises as to how the properties of the iron ore particles (size and shape) influence the granulation process. The granulation process is partly influenced by the characteristic of the feed and partly by the action of cohesive force inside the drum granulator (Newitt et al. 1958). The objective of this paper is to study the effect of raw material properties on the kinetics of iron ore granulation considering in particular the mechanisms ruling wet granulation for two iron ores and to know the factors which determine the texture, shape, porosity and mechanical strength of the granules.
Disciplines :
Physical, chemical, mathematical & earth Sciences: Multidisciplinary, general & others
Author, co-author :
Contreras, Rafael
Evrard, Maxime ;  Université de Liège - ULiège > Département ArGEnCo > Géoressources minérales & Imagerie géologique
Van loo, Frederic
Pirard, Eric  ;  Université de Liège - ULiège > Département ArGEnCo > Géoressources minérales & Imagerie géologique
Language :
English
Title :
Application of X-ray microtomography to investigate the effect of raw material properties on the kinetics of iron ores granulation
Publication date :
September 2014
Event name :
Particle size analysis conference PSA 2014 Manchester
Event date :
15-17 septembre 2014
Main work title :
PSA 2014 Manchester- Abstracts
Available on ORBi :
since 15 November 2014

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