论文信息 - Methods of Minerals Modification by the Micro- and Nanoparticles of Gold and Platinum for the Evaluation of the Collectors Selectivity at the Flotation Processing of Noble Metals From the Fine Ingrained Ores

Methods of Minerals Modification by the Micro- and Nanoparticles of Gold and Platinum for the Evaluation of the Collectors Selectivity at the Flotation Processing of Noble Metals From the Fine Ingrained Ores

The paper explicates methods of the mineral surface coating by noble metals allowing to obtain samples with micro- and nanoparticles of Au and Pt, simulating natural objects. The purpose is to investigate the sorption and flotation properties of collectors. As a result we obtained the samples of pyrite, pyrrhotine, arsenopyrite, and quartz artificially enriched by micro-sized and nano-sized particles of noble metals. The coating of noble metals was carried out using the method of reducing adsorption from H2[PtCl6], H[AuCl4], Na2[PtCl6], and Na[AuCl4] solutions and the method of adsorption of nano-sized particles from Au and Pt sols. Depending on the conditions of the sulfides enrichment by noble metals and sizes of new formations of Au and Pt, we considered possible areas of application, methods of samples’ research, and reagents interaction with microparticles and nanoparticles of gold and platinum. A complex of research methods of reagents’ interaction with metals and flotation investigations of minerals and ores revealed the selective properties of new complexing collectors (perhydro-1,3,5-ditiazin-5-yl-methane (MTKH), sodium di(isobutyl)dithiophosphinate (DIF), 2-(ethylthio)ethylamine (ETEA)) due to their chemical interaction with gold and platinum.

V. Chanturia | E. Koporulina | V. Getman | T. Ivanova

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