St. Petersburg Mining University (St. Petersburg, Russia):

Aleksandrova T. N., Head of Chair, Doctor of Engineering Sciences, Professor
Arustamyan K. M., Postgraduate Student, K_Arustamyan@rivs.ru
Romanenko S. A., Postgraduate Student, sromanenko@yandex.ru

The international practice of copper-zinc and pyritic-polymetallic ores selective flotation is analyzed in the paper. A statistical estimation of a formed data array including the concentrating plants processing parameters, as presented in the literature references, has been performed. A high variation of processing parameters, attributable to treatment of ores from deposits of different genesis, is noted. A conclusion is made with regard to a significant impact of reagent regime, as applied in the world practice. The advanced statistical methods are used for deeper understanding of the observed dispersion of parameters and establishment of quantitative interrelations between input variables and output functions. By means of factor analysis, two main components were detected with respect of determination of two major subtypes of deposits: massive pyritic ores and copperzinc ores with low or medium grade of iron sulfides. The method of harmonic analysis is used for checking the factor analysis results, verifying the presence of the two main types of genesis of the deposits in question. It is shown, that development of the pyritic factor significantly worsens the metallurgical results, despite the higher copper grade of the ore. In processing of ores with lower copper grade, a significant worsening of the metallurgical results was also noted. With the help of neural simulation, a differential diagnostics of the metallurgical results was performed with respect to the genesis of the deposits in question in the format of dressability curves.
The work was performed with the financial support from the Federal Targeted Programme «Research and development in the trends of priority growth areas of the science and technology sector of the Russian Federation for 2014–2020», Project RFMEFI57417X0168.

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