Experimental Justification of Luminophore Composition for Indication of Diamonds during X-Ray Luminescence Separation of Diamonds
V. A. Chanturia1, G. P. Dvoichenkova1,2, V. V. Morozov1, O. E. Koval'chuk3, Yu. A. Podkamenny1,3, V. N. Yakovlev4
1Research Institute for Comprehensive Exploitation of Mineral Resources, Russian Academy of Sciences, Moscow, 111020 Russia
2Ammosov North-Eastern Federal University, Mirny, 678174 Russia
3Research and Exploration Company, ALROSA Group, Mirny, 678174 Russia
4Yakutniproalmaz Institute, ALROSA Group, Mirny, 678174 Russia
Keywords: Алмазы, индикаторы, органический люминофор, неорганический люминофор, светимость, рентгенолюминесценция, спектрально-кинетические характеристики, сепарация, Diamonds, indicators, organic luminophore, inorganic luminophore, luminosity, X-ray luminescence, spectral and kinetic characteristics, separation
Abstract
Organic and inorganic luminophores having similar parameters of luminescence as diamonds are selected. Based on the excerpted luminophores, indicators are synthesized. Spectral and kinetic characteristics of luminophores are experimentally determined for deciding on optimal compositions to ensure maximum extraction of diamonds in X-ray luminescence separation owing to extra recovery of non-luminescent diamond crystals. As the components of luminophore-bearing indicators, anthracene and K-35 luminophores are selected as their parameters conform with the luminescence parameters of diamonds detected using X-ray luminescence separator with normal settings.
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