Surface Composition and Role of Hydrophilic Diamonds in Foam Separation
V. A. CHANTURIA1, G. P. DVOICHENKOVA1, O. E. KOVAL’CHUK2, A. S. TIMOFEEV1
1Research Institute of Comprehensive Exploitation of Mineral Resources-IPKON, Russian Academy of Sciences, Kryukovskii tupik 4, Moscow, 111020 Russia
2ALROSA Research and Exploration Company, Chernyshevskoe shosse 16, Mirny, 678174 Russia
Keywords: гидрофильность, минеральные образования, нанообразования, алмаз, спектроскопия, примеси, hydrophilic behavior, mineral formations, nano formations, diamond, spectroscopy, admixtures
Abstract
The article presents new test results on structural and chemical properties of mineral formations on the surface of natural hydrophilic diamonds using Raman, X-ray phase and Auger spectroscopy methods. Analysis of morphological features of nano formations involved scanning electron microscope Jeol-5610 and analyzer INCA. Based on the studies into phase composition of diamonds non-recovered in the circuit of kimberlite ore processing, two types of mineral formations are discovered on their surface: micro-formations as silicate nature globules less than 1 µm in size and silicate nano films more than 5 nm thick. The tests detect also presence of layered talcose silicates that make diamond surface hydrophilic.
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