|
|||||
|
|
Phosphate ore beneficiation via determination of phosphorus-to-silica ratios by Laser Induced Breakdown Spectroscopy |
|
| Authors: | George Asimellis Aggelos Giannoudakos Michael Kompitsas |
| Affiliation: | aFaculty of Physics, Aristotle University of Thessaloniki, Thessaloniki 54124, Greece bSchool of Chemical Engineering, National Technical University of Athens, 9, Iroon, Polytechniou Str., Zografou, 15780 Athens, Greece cNational Hellenic Research Foundation, Theoretical and Physical Chemistry Institute, 48, Vasileos Konstantinou Ave., 11635 Athens, Greece |
| Abstract: | We report development and application of an in-situ applicable method to determine phosphate ore rock quality based on Laser-Induced Breakdown Spectroscopy (LIBS). This is an economically viable method for real-time evaluation of ore phosphate rocks in order to separate high-silica pebbles prior to deep beneficiation. This is achieved by monitoring relative emission line intensities from key probe elements via single laser ablation shots: the ratio of the phosphorous to silica line intensities (P/Si ratio) provides a simple and reliable indicator of ore rock quality. This is a unique LIBS application where no other current analytical spectroscopic method (ICP or XRF) can be applied. Method development is discussed, and results with actual ore samples are presented. |
| Keywords: | Laser-induced breakdown spectroscopy Phosphorus detection Phosphate mine beneficiation |
| 本文献已被 ScienceDirect 等数据库收录！ | |