Development of a dynamic mill model structure for tumbling mills

Yu, Ping, Xie, Weiguo, Liu, Lian and Powell, Malcolm (2014). Development of a dynamic mill model structure for tumbling mills. In: Juan Yianatos, XXVIl International Mineral Processing Congress - IMPC 2014: Conference Proceedings. XXVII International Mineral Processing Congress - IMPC 2014, Santiago, Chile, (41-51). 20-24 October 2014.

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Name Description MIMEType Size Downloads
Author Yu, Ping
Xie, Weiguo
Liu, Lian
Powell, Malcolm
Title of paper Development of a dynamic mill model structure for tumbling mills
Conference name XXVII International Mineral Processing Congress - IMPC 2014
Conference location Santiago, Chile
Conference dates 20-24 October 2014
Proceedings title XXVIl International Mineral Processing Congress - IMPC 2014: Conference Proceedings
Journal name IMPC 2014 - 27th International Mineral Processing Congress
Place of Publication Santiago, Chile
Publisher Gecamin Digital Publications
Publication Year 2014
Sub-type Fully published paper
Open Access Status
Editor Juan Yianatos
Volume 1
Start page 41
End page 51
Total pages 11
Collection year 2015
Language eng
Formatted Abstract/Summary
In order to develop a common mathematical and simulation platform for tumbling mills, a review of existing mechanistic models was made identifying the key aspects of grinding and slurry transport which are common to all tumbling mills. A mill model structure has been developed for all types of tumbling mills based on the population balance framework by incorporating breakage characteristics, slurry and solids transport, product classification and discharge, and energy consumption. A size-dependant breakage model developed by the JKMRC is applied. Transport is separated from breakage events and treated as a main sub-model in the new model structure. The model structure is based on dynamic timestepping technique to enable dynamic simulation capability for non-steady-state simulation and control modelling.

It is envisaged that the new model will cover a full range of milling conditions. It should enable a smooth transition between different mill types, such as from AG (Autogenous Grinding) to SAG to ball mill. The dynamic mill model structure developed here is the first step towards mechanistic modelling of grinding mills and provides great potential for the optimization of the comminution process.
Q-Index Code E1
Q-Index Status Confirmed Code
Institutional Status UQ

 
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Created: Mon, 17 Nov 2014, 15:56:35 EST by Karen Holtham on behalf of Julius Kruttschnitt Mineral Research Centre