Discrete element modelling of the influence of lifters on power draw of tumbling mills

Djordjevic, N. (2003) Discrete element modelling of the influence of lifters on power draw of tumbling mills. Minerals Engineering, 16 4: 331-336. doi:10.1016/S0892-6875(03)00019-0


Author Djordjevic, N.
Title Discrete element modelling of the influence of lifters on power draw of tumbling mills
Journal name Minerals Engineering   Check publisher's open access policy
ISSN 0892-6875
Publication date 2003
Sub-type Article (original research)
DOI 10.1016/S0892-6875(03)00019-0
Volume 16
Issue 4
Start page 331
End page 336
Total pages 6
Editor B.A. Wills
Place of publication Oxford, UK
Publisher Elsevier Science Ltd.
Collection year 2003
Language eng
Subject C1
290702 Mineral Processing
640399 Other
Abstract Crushing and grinding are the most energy intensive part of the mineral recovery process. A major part of rock size reduction occurs in tumbling mills. Empirical models for the power draw of tumbling mills do not consider the effect of lifters. Discrete element modelling was used to investigate the effect of lifter condition on the power draw of tumbling mill. Results obtained with PFC3D code show that lifter condition will have a significant influence on the power draw and on the mode of energy consumption in the mill. Relatively high lifters will consume less power than low lifters, under otherwise identical conditions. The fraction of the power that will be consumed as friction will increase as the height of the lifters decreases. This will result in less power being used for high intensity comminution caused by the impacts. The fraction of the power that will be used to overcome frictional resistance is determined by the material's coefficient of friction. Based on the modelled results, it appears that the effective coefficient of friction for in situ mill is close to 0.1. (C) 2003 Elsevier Science Ltd. All rights reserved.
Keyword Engineering, Chemical
Mineralogy
Mining & Mineral Processing
Comminution
Sag Milling
Modelling
Ball Mills
Charge
Q-Index Code C1

 
Versions
Version Filter Type
Citation counts: TR Web of Science Citation Count  Cited 16 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 23 times in Scopus Article | Citations
Google Scholar Search Google Scholar
Access Statistics: 96 Abstract Views  -  Detailed Statistics
Created: Tue, 14 Aug 2007, 19:15:23 EST