Rationale for using pyrrolidinedithiocarbamate in extraction of sulfide minerals of non-ferrous and noble metals from complex ores
T.N. Matveyeva, N.K. Gromova, L.B. Lantsova
Institute of Comprehensive Exploitation of Mineral Resources of Russian Academy of Sciences, Moscow, Russian Federation
Russian Mining Industry №5S/ 2025 p. 52-58
Abstract: Creation and application of new selective reagents is one of the global trends in flotation development, especially in conditions of decreasing useful metal content in the mined ores, complex mutual intergrowth of the mineral grains, uneven impregnation and complex material composition of the ores. Such characteristics are typical of the so-called refractory ores, which are currently the mineral raw materials for obtaining most metals. The complex composition of ores, on the one hand, makes it possible to obtain concentrates of several metals without increasing the environmental load on the natural landscape, on the other hand, it increases the requirements for the quality of finished products in terms of undesirable impurities, i.e. compliance with the conditions for selective separation of heterogeneous concentrates for subsequent metallurgical processing. Increasing the efficiency of separating mineral complexes under flotation conditions can be ensured by the selective action of a new generation of the flotation reagents. The aim of this work was to study a new reagent of the dithiocarbamates - pyrrolidine dithiocarbamate (PyrroDTC) class as a collector of sulfide minerals in flotation of complex gold-copper ore of the Malinovskoye deposit. LEO 1420VP scanning electron and KEYNCE VK-9700 laser microscopes were used to identify the reagent phases in the polished sections of individual minerals and ore samples that are different in appearance, quantity, composition and strength of fixation depending on the composition of the mineral. Shimadzu-1800 UV spectrophotometer determined the 0.53 mg/g adsorption of PyrroDTC on chalcopyrite. Increased adsorption of PyrroDTC on chalcopyrite contributed to an increase in the copper content in the concentrate from 9.77 to 13.33–15.2% and an increase in copper extraction from 91.15 to 93.16%. Lower flotation activity in relation to arsenopyrite and scheelite resulted in a decrease in the arsenic content in the copper concentrate and a reduction in tungsten losses with the copper concentrate.
Keywords: complex ores, flotation, pyrrolidine dithiocarbamate, electron microscopy, laser microscopy, adsorption
Acknowledgements: The authors express their gratitude to Candidates of Geological and Mining Sciences E.V. Koporulina and V.A. Minaev for their assistance in conducting the research.
For citation: Aynbinder I.I., Patskevich P.G. Rationale for using pyrrolidinedithiocarbamate in extraction of sulfide minerals of non-ferrous and noble metals from complex ores. Russian Mining Industry. 2025;(5S):52–58. (In Russ.) https://doi.org/10.30686/1609-9192-2025-5S-52-58
Article info
Received: 27.08.2025
Revised: 06.10.2025
Accepted: 09.10.2025
Information about the authors
Tamara N. Matveeva – Dr. Sci. (Eng.), Head of Department, Institute of Comprehensive Exploitation of Mineral Resources Russian Academy of Sciences, Moscow, Russian Federation; https://orcid.org/0000-0002-5658-9948; e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
Nadezhda K. Gromova – Research Associate, Institute of Comprehensive Exploitation of Mineral Resources Russian Academy of Sciences, Moscow, Russian Federation; https://orcid.org/0000-0002-4753-5745; e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
Ludmila B. Lantsova – Research Associate, Institute of Comprehensive Exploitation of Mineral Resources Russian Academy of Sciences, Moscow, Russian Federation; https://orcid.org/0009-0009-4585-1531; e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
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