New Experimental Evaluation Techniques for Selectivity of Collecting Agents for Gold and Platinum Flotation from Fine-Impregnated Noble Metal Ores
T. A. IVANOVA, V. A. CHANTURIA, I. G. ZIMBOVSKY
Institute of Comprehensive Exploitation of Mineral Resources, Russian Academy of Sciences, Kryukovskii tupik 4, Moscow, 111020 Russia
Keywords: minerals, flotation, sorption, collecting agents, artificial application, platinum, gold, noble metal new growth, collecting agents, microsized and nanosized particles, electron microscopy
Abstract
It is proposed to apply nanosized Au and Pt particles to ground mineral particles for the analysis of flotation and adsorptive properties of new reagents. The authors have obtained specimens of pyrite, arsenopyrite and quartz artificially enriched by nanosized gold particles. Reductive adsorption from Na2[PtCl6] and Na[AuCl4] produced pyrrhotine uniformly applied by microsize platinum particles. The article discusses the application range of the proposed techniques and methods of examination of specimens and interaction between reagents and micro- and nanosized gold and platinum particles depending on the conditions of sulfide treatment by the noble metals and properties of host mineral. Advanced integrated analysis of interaction between the nitrogen-bearing reagent MTKh and gold confirmed chemically induced selectivity of MTKh toward gold.
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