Assessment of Three Spectroscopic Techniques for Rapid Estimation of Calcite in Copper Ore
link https://doi.org/10.1109/TIM.2009.2028774account_box Escarate, P.account_box Guesalaga Meissner, Andrésaccount_box Albertini, Valerio Rossiaccount_box Bailo, Daniele
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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 <
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| Autor | Escarate, P. Guesalaga Meissner, Andrés Albertini, Valerio Rossi Bailo, Daniele |
| Título | Assessment of Three Spectroscopic Techniques for Rapid Estimation of Calcite in Copper Ore |
| Revista | IEEE Transactions on Instrumentation and Measurement |
| ISSN | 0018-9456 |
| ISSN electrónico | 1557-9662 |
| Volumen | 59 |
| Número de publicación | 7 |
| Página inicio | 1911 |
| Página final | 1917 |
| Fecha de publicación | 2010 |
| Resumen | 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. |
| Derechos | acceso restringido |
| DOI | 10.1109/TIM.2009.2028774 |
| Editorial | IEEE |
| Enlace | https://ieeexplore.ieee.org/stamp/stamp.jsp?arnumber=5282560 |
| Id de publicación en WoS | WOS:000281764200019 |
| Palabra clave | Spectroscopy Copper Raman scattering Calibration Fluorescence X-ray diffraction Energy measurement Current measurement Time measurement Laboratories |
| Tema ODS | 02 Zero hunger |
| Tema ODS español | 02 Hambre cero |
| Tipo de documento | artículo |