An evaluation of the calibration process of a neutron-gamma ray online coal analyzer

B. Sibiya, A. A. Adeleke, A. P.I. Popoola, P. A. Olubambi

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)


Samples of a thermal coal were analyzed by the conventional methods and the online analyzer. The results obtained in static calibration tests and the online analysis showed high correlations of 89.9%, 98.6%, and 98.2%, respectively for volatile matter, ash, and calorific value. However, the results obtained for the dynamic tests correlate poorly with reproducible conventional tests, particularly at the initial stages of the calibration study. It was observed that the results of the real-time analyses gradually get closer to the conventional static results as the online analyzer accumulated more data on the varying nature of the coal deposit.

Original languageEnglish
Pages (from-to)10-18
Number of pages9
JournalInternational Journal of Coal Preparation and Utilization
Issue number1
Publication statusPublished - 2014
Externally publishedYes


  • Coal
  • Correlation
  • Mining
  • Online analyzer
  • Static tests

ASJC Scopus subject areas

  • General Chemical Engineering
  • Fuel Technology
  • Geotechnical Engineering and Engineering Geology
  • Energy Engineering and Power Technology
  • Mechanical Engineering


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