The Mechanism and Parameters of Froth Flotation Stimulation for Diamond-Bearing Materials by Thermal and Electrochemical Effects
V. V. Morozov1, G. P. Dvoichenkova2,3, E. G. Kovalenko4,3, E. L. Chanturia1, E. N. Chernysheva5
1National University of Science and Technology, Moscow, Russia
2Academician Melnikov Research Institute of Comprehensive Exploitation of Mineral Resources, Moscow, Russia
3Mirny Polytechnic Institute, Mirny, Russia
4Yakutniproalmaz Institute ALROSA, Mirny, Russia
5Coralina Engineering, Moscow, Russia
Keywords: Diamonds, kimberlite, froth flotation, thermal treatment, electrochemical conditioning, attachments, films, scrubbing
Abstract
The thermodynamic analysis and tests of minerogenesis under higher temperatures determine conditions of thermochemical decomposition of hydrophilic attachments on diamond surface. It is found that hydrophilic mineral attachments can be removed from diamond surface by combining thermal treatment of slurry at the temperature of 80-85 °С with electrochemical treatment of recirculated water, which enables required change in ion-molecule composition of water phase in the slurry. The hybrid conditioning technology ensures recovery of the natural hydrophobic behavior and floatability of diamonds and enhances performance of froth flotation of diamonds by 5.1%.
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