The development of a dynamic model for autogenous and semi-autogenous grinding

Valery Jr. W. and Morrell S. (1995) The development of a dynamic model for autogenous and semi-autogenous grinding. Minerals Engineering, 8 11: 1285-1297. doi:10.1016/0892-6875(95)00096-9


Author Valery Jr. W.
Morrell S.
Title The development of a dynamic model for autogenous and semi-autogenous grinding
Journal name Minerals Engineering   Check publisher's open access policy
ISSN 0892-6875
Publication date 1995
Sub-type Article (original research)
DOI 10.1016/0892-6875(95)00096-9
Volume 8
Issue 11
Start page 1285
End page 1297
Total pages 13
Subject 1600 Chemistry
1909 Geotechnical Engineering and Engineering Geology
2207 Control and Systems Engineering
2210 Mechanical Engineering
1900 Earth and Planetary Sciences
1906 Geochemistry and Petrology
Abstract To assist in the study and understanding of plant dynamics, circuit interactions, mill operational behaviour and automatic control schemes, a model of the dynamic behaviour of autogenous (ag) and semi-autogenous mills (sag) is currently under development at the JKMRC. The model is being developed to provide an accurate dynamic response in terms of power draw, grinding charge level, slurry level and product size distribution for changes in feedrate, feed size, feed hardness and water addition. The conceptual structure of the model is described together with dynamic data from 2 full scale high aspect ratio autogenous mills which will be used to validate the model. The data were obtained from a series of step tests and comprise trends in power draw, bearing pressure, solids and water flowrates as well as an indication of the fraction of coarse rocks in the feed. This latter quantity was obtained from a novel, yet simple device for counting rocks which will be described. The mills measured response to these step changes is presented together with an explanation for their behaviour in terms of the physical changes which took place inside the mill.
Keyword autogenous
dynamic model
Grinding
mill
semi-autogenous
simulation
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: Scopus Import
 
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