http://www.cnr.it/ontology/cnr/individuo/prodotto/ID52392
Assessment of Three Spectroscopic Techniques for Rapid Estimation of Calcite in Copper Ore (Articolo in rivista)
- Type
- Label
- Assessment of Three Spectroscopic Techniques for Rapid Estimation of Calcite in Copper Ore (Articolo in rivista) (literal)
- Anno
- 2010-01-01T00:00:00+01:00 (literal)
- Alternative label
Escarate, P.; Guesalaga, A.R.; Albertini, V.R.; Bailo, D.; (2010)
Assessment of Three Spectroscopic Techniques for Rapid Estimation of Calcite in Copper Ore
in IEEE transactions on instrumentation and measurement
(literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- Escarate, P.; Guesalaga, A.R.; Albertini, V.R.; Bailo, D.; (literal)
- Pagina inizio
- Pagina fine
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
- Rivista
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#note
- http://dx.doi.org/10.1109/TIM.2009.2028774 (literal)
- Note
- ISI Web of Science (WOS) (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
- Dept. de Ing. Electr., Pontificia Univ. Catolica de Chile, Santiago, Chile;
Istituto di Struttura della Materia, CNR; Italy (literal)
- Titolo
- Assessment of Three Spectroscopic Techniques for Rapid Estimation of Calcite in Copper Ore (literal)
- Abstract
- This paper presents the assessment of three spectroscopic techniques, i.e., Raman spectroscopy (RS), ultraviolet fluorescence (UVF) spectroscopy, and energy-dispersive X-ray diffraction (ED-XRD), for measuring calcite (CaCO3) concentration in copper ore. The results for the three methods are compared in terms of their correlation coefficient R2 and prediction error (root-mean-square error of prediction, RMSEP). These approaches substantially shorten the measurement time with respect to current laboratory procedures from 300 min down to 1,15, and 9 min for RS, ED-XRD, and UVF, respectively, while preserving a good accuracy level (RMSEP <; 0.577). Prediction models were calibrated and validated for the three techniques, using the correlation coefficients Rc2 and Rv2, the error of prediction (RMSEP), and the error of calibration (root-mean-square error of calibration, RMSEC). Rv2 values of 0.90,0.88, and 0.94 were obtained for the RS, UVF, and ED-XRD models, respectively. The calibration and validation were performed for calcite concentrations ranging from 2.9% to 10.7%, and although the ED-XRD model performed slightly better than its RS counterpart, the time taken by the latter is significantly shorter than that by the other two, representing a good candidate for online estimation of calcite concentration. (literal)
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