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
  • 1911 (literal)
Pagina fine
  • 1917 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 59 (literal)
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)
Prodotto di
Autore CNR

Incoming links:


Autore CNR di
Prodotto
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi
data.CNR.it