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Название Activation of antimony minerals by copper and lead cations during flotation
DOI 10.17580/or.2023.04.07
Автор Solozhenkin P. M.
Информация об авторе

Institute of Comprehensive Exploitation of Mineral Resources RAS (Moscow, Russia):

Solozhenkin P. M., Chief Researcher, Doctor of Engineering Sciences, Professor, solozhenkin@mail.ru


Metal cations are widely used to activate minerals during flotation. Studies by the nuclear quadrupole resonance (NQR) method have shown that lead ions activate the Sb2S3 surface, creating favorable conditions for interaction with xanthate and surface hydrophobization, which is extensively applied in flotation. The solubility product for Hg2+, Cu2+ complexes with xanthate is much lower than that of Pb2+. Lead salts, however, are the best antimonite activators during its flotation with xanthate. Copper cation migration deep into the mineral lattice may be suggested as one of the causes for their weak activation ability towards antimonite as compared to lead ions. Improved flotation performance may be achieved by reducing the degree of migration through sequential treatment of antimonite with salts of heavy metals, in particular, using a cation mix of Zn2+ + Cu2+. The mechanism of activation of antimonite and aurostibite by lead and copper ions was analyzed using molecular modeling methods. Advanced physicochemical studies have shown the preferential formation of copper compounds in the Cu(I) oxidation state. It has been established that lead ions activate the antimonite surface through sorption on it, which facilitates interaction with xanthate and hydrophobizes the surface. Copper cations, unlike lead cations, penetrate into the crystal lattice of the mineral, which hinders interaction with the collector. Models of aurostibite, a mineral that is an alloy of gold with Sb, have been created. A number of complexes of antimony with composites of promising reagents have been designed.

Ключевые слова Antimonite, aurostibite, activation, lead, copper, flotation, reagents
Библиографический список

1. Kondrat'ev S. A., Gavrilova T. G. Physical adsorption mechanism in terms of sulphide mineral activation by heavy metal ions. Fiziko-tekhnicheskie Problemy Razrabotki Poleznykh Iskopayemykh. 2018. No. 3. pp. 121–135.
2. Cao Y., Sun L., Gao Z., Sun W., Cao X. Activation mechanism of zinc ions in cassiterite flotation with benzohydroxamic acid as a collector. Minerals Engineering. 2020. Vol. 156, Iss. 5. DOI: 10.1016/j.mineng.2020.106523
3. Meng Q., Li L., Yuan Z., Yang J., Lu J. Modification mechanism of lead ions and its response to wolframite flotation using salicylhydroxamic acid. Powder Technology. 2020. Vol. 366. pp. 477–487.
4. Li F., Zhao G., Zhong H., Wang S., Liu G. A novel activation system for wolframite flotation by using Cu(II) ion and α-hydroxyoctyl phosphinic acid. Chemical Engineering Journal Advances. 2022. Vol. 9. DOI: 10.1016/j.ceja.2021.100234
5. Gavrilova T. G., Kondrat'ev S. A. Development of the activation mechanism for sulfide flotation by heavy metal ions. Innovative processes of complex treatment of natural and manmade mineral raw materials (Plaksinsky Readings – 2020), Apatity, 21–26 September, 2020. pp. 147–149.
6. Meng X., Zhao H., Sun M., Zhang Yi., Zhang Ya., Lv X., Kim X., Vainshtein M., Wang S., Qiu G. The role of cupric ions in the oxidative dissolution process of marmatite: A dependence on Cu2+ concentration. Science of the Total Environment. 2019. Vol. 675. pp. 213–223.
7. Kondrat'ev S. A., Konovalov I. А. The physical form of sorption and its influence on the activation of sphalerite flotation by heavy metal ions. Interekspo Geo-Sibir'. 2018. Vol. 5. pp. 66–73
8. Bulgakov S. V., Kuzina Z. P., Skabin S. V. Flotation beneficiation of refractory gold-bearing ores of the Olimpiadinskoye deposit using butyl xanthate and dithiophosphate Hostaflot PEB. XI Congress of mineral processing specialists of the CIS countries: collection of materials. Moscow, March 13–15, 2017. pp. 314–458.
9. Solozhenkin P. M., Milman B. M., Vorob'ev-Desyatovskii N. V. Effect of lead(II) compounds on the rate of cyanide dissolution of gold. Zhurnal Obshchey Khimii. 2007. Vol. 77, Iss. 1–12. pp. 3–12.
10. Matveeva T. N., Gromova N. K., Lantsova L. B. Developing a selective flotation process for antimony and arsenic sulfides in complex gold ore processing. Tsvetnye Metally. 2019. No. 4. pp. 6–12.
11. Solozhenkin P. M. Physical-chemical study on sorption metals cations by antimony minerals. Proc. of XII Balkan mineral processing congress, 10–14 June 2007, Delphi, Greece. pp. 12–16.
12. Solozhenkin P. M. Investigation of the mechanism of interaction of metal cations with the surface of antimony minerals. Tsvetnye Metally. 2006. No. 7. pp. 10–15.
13. Goden A. M. Flotation. Moscow: Gosgorizdat, 1959. 653 p.
14. Prestidge C. A., Skinner W. M., Ralston J., Smart R. Copper(II) activation and cyanide deactivation of zinc sulphide under mildly alkaline condition. Applied Surface Science. 1997. Vol. 108, Iss. 3. pp. 333–344.
15. Rao S. R., Nesset J. E., Finch J. A. Activation of sphalerite by Cu ions produced by cyanide action on chalcopyrite. Minerals Engineering. 2011. Vol. 24, Iss. 9. pp. 1025–1027.
16. Finkelstein N. P. The activation of sulphide minerals for flotation: a review. International Journal of Mineral Processing. 1997. Vol. 52, Iss. 2–3. pp. 81–120.
17. Liu J., Wang Yu., Luo D., Chen L., Deng J. Comparative study on the copper activation and xanthate adsorption on sphalerite and marmatite surfaces. Applied Surface Science. 2018. Vol. 439. pp. 263–271.
18. Cho Z. Ya. Increasing the selectivity of flotation of pyrite copper-zinc ores using sphalerite flotation modifiers based on iron(II), copper(II) and zinc compounds. Abstract of diss. for the degree of Candidate of Engineering Sciences. Moscow, MISiS, 2018. 26 p.
19. Solozhenkin P. M. Interactions of antimony minerals with lead cations, sulfhydryl reagents based on molecular modeling. Scientific foundations and practice of processing ores and man-made raw materials. Materials of the XXV International scientific and technical conference held within the framework of the XVIII Ural mining decade, 02–11 April 2020, Ekaterinburg. pp. 74–78.
20. Segura-Salazar J., Brito-Parada P. R. Stibnite froth flotation: A critical review. Minerals Engineering. 2021. Vol. 163. DOI: 10.1016/j.mineng.2020.106713.
21. Xiaoa Yo., Cui Y., Tonga X., Wanga J., Huanga D., Zhang Ya. Activation mechanisms of Cu2+ and Pb2+ in stibnite flotation. URL: https://www.researchsquare.com/article/rs-2544656/v1 (accessed: 20.07.2023).
22. Cao Q., Chen X., Feng Q., Wen S. Activation mechanism of lead ion in the flotation of stibnite. Minerals Engineering. 2018. Vol. 119. pp. 173–182.
23. Solozhenkin P. M. Interactions of aurostibnite AuSb2 with sulfhydryl reagents based on molecular modeling. Scientific foundations and practice of processing ores and man-made raw materials. Materials of the ХХIII International scientific and technical conference held within the framework of Ural mining decade, 09–18 April 2018, Ekaterinburg. pp. 148–153.

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