Article Dans Une Revue Minerals Année : 2022

On the Influence and Correction of Water Content on pXRF Analysis of Lateritic Nickel Ore Deposits in the Context of Open Pit Mines of New-Caledonia

Résumé

In a number of applications, the use of portable X-ray fluorescence (pXRF) instruments offers a time and cost-saving alternative to standard laboratory instruments. This is particularly true in a mining context where decisions must be taken quickly in the field. However, pXRF is a technique known to be efficient, provided that samples are well prepared, i.e., dried and finely ground. On the mine face, little-to-no sample preparation is conceivable as mining vehicles must be able to operate continuously. Therefore, solutions have to be found even for raw materials and one of the most critical problems is the sample water content, in particular in the context of open pit mines in a tropical area. A large number of analysis shows that knowledge of humidity enables the measured concentration to be effectively corrected for the three instruments used (Niton, X-met, Titan). It is possible to overcome the difficulty of measuring water content in the field by fixing it to its maximum value (saturation). The results show that the saturation method is reliable, or at least, promising.

Fichier principal
Vignette du fichier
minerals-12-00415.pdf (16.88 Mo) Télécharger le fichier
Origine Fichiers éditeurs autorisés sur une archive ouverte
Licence

Dates et versions

hal-03626950 , version 1 (31-03-2022)

Licence

Identifiants

Citer

Valérie Laperche, Cyrille Metayer, Julien Gaschaud, Philippe Wavrer, Thomas Quiniou. On the Influence and Correction of Water Content on pXRF Analysis of Lateritic Nickel Ore Deposits in the Context of Open Pit Mines of New-Caledonia. Minerals, 2022, 12 (4), pp.415. ⟨10.3390/min12040415⟩. ⟨hal-03626950⟩
134 Consultations
314 Téléchargements

Altmetric

Partager

  • More