Development of a dynamic mill model structure for tumbling mills

Ping Yu, Weiguo Xie, Lian Liu, Malcolm Powell

Research output: Contribution to conferencePaperpeer-review

4 Scopus citations

Abstract

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.

Original languageEnglish (US)
StatePublished - Jan 1 2014
Externally publishedYes
Event27th International Mineral Processing Congress, IMPC 2014 - Santiago, Chile
Duration: Oct 20 2014Oct 24 2014

Conference

Conference27th International Mineral Processing Congress, IMPC 2014
CountryChile
CitySantiago
Period10/20/1410/24/14

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