Combination Processes of Diamond Mining in Metasomatically Altered Kimberlite Rocks
V. A. CHANTURIA1, G. P. DVOICHENKOVA1,2, I. ZH. BUNIN1, V. G. MINENKO1, E. G. KOVALENKO3, YU. A. PODKAMENNY1,4
1Institute of Integrated Mineral Development-IPKON, Russian Academy of Sciences, Kryukovskii tupik 4, Moscow, 111020 Russia
2Ammosov North-Eastern Federal University, ul. Tikhonova 5/1, Mirny, 678174 Russia
3Alrosa, ul. Lenina 6, Mirny, 678174 Russia
4Research and Exploration Services, Chernyshevskoe shosse 16, Mirny, 678174 Russia
Keywords: алмазы, кимберлит, шламы, минеральные образования, микроскопия, спектроскопия, гидрофобность, флотационная активность, diamonds, kimberlites, mineral formations, microscopy, hydrophobic behavior, flotation activity
Abstract
The article gives new experimental data on chemistry, phase composition, structure and physicochemical properties of surface of minerals composing metasomatically altered kimberlite rocks. The authors have determined formation conditions and basic genetic types of mineral micro- and nano-size phases on diamond surface in the form of aluminosilicate minerals, thin coats of clayey minerals, calcite and dolomite bound with carbonate cement, as well as their negative effect on recovery of diamonds by foam separation. The mechanisms and efficient methods of combined energy effects on the natural heterogeneous system of diamond and surface mineral phase are found to rupture hydrophilic mineral films on diamond surface, prevent their repeated formation and reduce diamond loss in processing of diamond-bearing kimberlites.
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