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Mathematical model for optimum replacement interval of grinding mill liners
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Operation, Maintenance and Acoustics.
2009 (English)Conference paper, Oral presentation only (Refereed)
Abstract [en]

This paper presents an approach to decide a cost effective replacement intervals for the liners of a grinding mill used in ore processing plants. The replacement model is based on the detailed analysis of mill performance characteristics, mill failure statistics and maintenance of mill liner. The model formulation for optimum replacement and mill efficiency includes the cost and revenue drivers for the mill. The developed decision model incorporates maintenance cost and monetary gain by doing analysis of production performance of the mill.The developed mathematical model uses the various types of process data i.e. power consumption, mill load, feed flow, metal recovery etc. which is analyzed to establish correlation with life cycle of mill liners. Due to lack of process data for some particular ore types, various techniques such as smoothing, interpolation, simulation and distribution analysis are used to generate the data for the periods for which data is not available. The paper also discusses practical problems encountered while modeling of the real data using classical approach for replacement decisions. The main objective of this paper is to develop a decision support model for taking a cost effective optimum replacement interval for mill liners. A case study was carried out on real data obtained from an ore dressing plant to validate the model.

Place, publisher, year, edition, pages
2009.
Keywords [en]
Technology - Industrial engineering and economy
Keywords [sv]
Teknikvetenskap - Industriell teknik och ekonomi
National Category
Other Civil Engineering
Research subject
Operation and Maintenance
Identifiers
URN: urn:nbn:se:ltu:diva-28758Local ID: 2a8933e0-e63a-11de-bae5-000ea68e967bOAI: oai:DiVA.org:ltu-28758DiVA, id: diva2:1001962
Conference
International Conference on Quality, Reliability and Infocom Technology : 18/12/2009 - 20/12/2009
Note
Godkänd; 2009; 20091211 (rajdan)Available from: 2016-09-30 Created: 2016-09-30 Last updated: 2017-11-25Bibliographically approved

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Dandotiya, Rajiv

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CiteExportLink to record
Permanent link

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Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf