Article (Scientific journals)
A generic wear prediction procedure based on the Discrete Element Method for ball mill liners in the cement industry
Boemer, Dominik; Ponthot, Jean-Philippe
2017In Minerals Engineering, 109, p. 55-79
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Keywords :
Ball mill; DEM; Discrete Element Method; Liner wear
Abstract :
[en] generic procedure to predict the wear evolution of lining surfaces, namely the spatial distribution of wear and the progressive modification of the geometry due to wear, is introduced in the context of shell liners in ball mills. The wear data is accumulated on the surface of the liner by 3D discrete element method (DEM) simulations of the ball charge in an axial slice of the mill, which is either closed by a periodic boundary condition or by frictionless end walls. The calibration of this wear data with the measured wear profiles of the shell liner in a 5.8 m diameter industrial cement tube mill shows that the tangential damping energy defined by the linear spring-slider-damper DEM contact law is the best fitting wear model of 6 different models. The gradual update of the liner shape delivers adequate results for liners without an axial height variation, while the accuracy of fully variable geometrical modifications is limited by the computation time. Nevertheless, detailed phenomena, like the creation of grooves in the liner, were for the first time numerically modeled.
Disciplines :
Mechanical engineering
Author, co-author :
Boemer, Dominik ;  Université de Liège > Département d'aérospatiale et mécanique > LTAS-Mécanique numérique non linéaire
Ponthot, Jean-Philippe  ;  Université de Liège > Département d'aérospatiale et mécanique > LTAS-Mécanique numérique non linéaire
Language :
English
Title :
A generic wear prediction procedure based on the Discrete Element Method for ball mill liners in the cement industry
Publication date :
2017
Journal title :
Minerals Engineering
ISSN :
0892-6875
Publisher :
Pergamon Press - An Imprint of Elsevier Science, Oxford, United Kingdom
Volume :
109
Pages :
55-79
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
F.R.S.-FNRS - Fonds de la Recherche Scientifique [BE]
Available on ORBi :
since 12 March 2017

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