Scientific Research and Essays

  • Abbreviation: Sci. Res. Essays
  • Language: English
  • ISSN: 1992-2248
  • DOI: 10.5897/SRE
  • Start Year: 2006
  • Published Articles: 2755

Full Length Research Paper

Assessment of performance of a fine coal processing plant through availability analysis and the Mann-Whitney U test for two samples

Huseyin Ankara1 and Suheyla Yerel2*
1Mining Engineering Department, Eskisehir Osmangazi University, Eskisehir, Turkey. 2Civil Engineering Department, Bilecik University, Bilecik, Turkey.
Email: [email protected], [email protected]

  •  Accepted: 04 January 2010
  •  Published: 28 February 2010

Abstract

In this study, the Mann-Whitney U test for two sample and availability analysis are applied on equipments belonging to a heavy dense cyclone circuit in a fine coal processing plant. Through the results from the Mann-Whitney U test for two samples, it is determined that the coal sieves fed by the upper flow of the cyclone (S25, S26 and S27) and the coal sieves fed by the lower flow of the cyclone (S28and S29) are identical. Using availability analysis, the performances of the cyclone pump engine (CPE), the cyclone pump (CP) and the coal sieves are calculated. As the result of this analysis, it is found that the performances of these equipment ranges from 96.60 - 98.99% and that they operate with a high performance. As a result, it is determined that the performances of the equipment can be calculated using availability analysis and that the Mann-Whitney U test for two samples supports this analysis.  Additionally, it is believed that these methods may help the monitoring of equipment in complex facilities and help improve fine coal processing plants.

 

Key words: Availability analysis, the Mann-Whitney U test for two samples, fine coal processing plant, cyclone circuit.