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Determining Modes of Thiol Collector Attachment at Sulfide Minerals by Optical, Electron Scanning and Laser Microscopy

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Abstract

The optical, electron scanning and laser microscopy methods produced new experimental data on the adsorption layer generated by the chelating agent MDTC and hogweed extract on the surface of sulfide minerals in composition of complex ore. It is found that MDTC selectively attaches to chalcopyrite and forms a stable and water-insoluble compound with copper, which uniformly covers the whole surface of the mineral. It is determined for the first time that at the surface of pyrite, intense formation of dark-brown crystals of MDTC oxidation products takes place—dimorpholinethiuram disulfide which is chemically adsorbed at the mineral and is resistant to multiple washing-off in water. Morpholine dithiocarbamate does not interact with the surface of arsenopyrite and scheelite, and does not form stable phases with the components of these minerals. Hogweed extract does not desorb MDTC and is observed on the pre-adsorbed collector in the form of a fine bluish film washable off with water. At arsenopyrite and scheelite, a few separate and fine spots of hogweed are found.

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Authors and Affiliations

  1. Academician Melnikov Institute of Comprehensive Development of Mineral Resources—IPKON, Russian Academy of Sciences, 111020, Moscow, Russia

    T. N. Matveeva, V. A. Minaev & N. K. Gromova

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  1. T. N. Matveeva
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  2. V. A. Minaev
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  3. N. K. Gromova
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Correspondence to T. N. Matveeva.

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Translated from Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, 2023, No. 4, pp. 168-175. https://doi.org/10.15372/FTPRPI20230418.

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Matveeva, T.N., Minaev, V.A. & Gromova, N.K. Determining Modes of Thiol Collector Attachment at Sulfide Minerals by Optical, Electron Scanning and Laser Microscopy. J Min Sci 59, 673–680 (2023). https://doi.org/10.1134/S106273912304018X

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  • DOI: https://doi.org/10.1134/S106273912304018X

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