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- Title
DETERMINATION OF THE CALORIFIC VALUE AND MOISTURE CONTENT OF CRUSHED OIL SHALE BY LIBS.
- Authors
AINTS, MÄRT; PARIS, PEETER; JÕGI, INDREK; LAAN, MATTI; TUFAIL, IRAM; AOSAAR, HARDI; RIISALU, HELLA
- Abstract
Laser-induced breakdown spectroscopy (LIBS) was used for the quantitative assessment of the calorific value of Estonian oil shale. Samples were collected from different layers of oil shale and limestone from Narva open cast mine, Estonia. Lumps of crushed oil shale without any special preparation were tested on a mock-up of a moving conveyor belt. The moisture content of oil shale samples was varied. Multivariate regression analysis was applied for processing of spectroscopic data. The results obtained using the bomb calorimetric method were used for calibration. The method for selecting the optimal number of spectral lines for data processing is presented. The standard deviation of prediction of the calorific value was 1.76 MJ/kg and the moisture content was 1.94%.
- Subjects
NARVA (Estonia); OIL shales; CALORIMETRY; MOISTURE measurement; LASER-induced breakdown spectroscopy; REGRESSION analysis
- Publication
Oil Shale, 2018, Vol 35, Issue 4, p339
- ISSN
0208-189X
- Publication type
Article
- DOI
10.3176/oil.2018.4.04