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Mechanism of the activating and depressing effects of sodium fluosilicate in the flotation of minerals by oleate soap

  • Physical and Chemical Principles of Beneficiation
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Soviet mining science Aims and scope

Conclusions

  1. 1.

    Study of the flotabilities of fluorite, topaz, beryl, albite, and quartz by sodium oleate in the presence of sodium fluosilicate reveals the feasibility of selective flotation of fluorite and topaz from beryl, albite, and quartz by means of sodium fluosilicate.

  2. 2.

    The authors have studied attachment of the collector to mineral surfaces under these flotation conditions, determined the surface fonms of the reagents in the IR spectra, and elucidated (to a first approximation) the mechanism of the flotation effect of sodium fluosilicate.

  3. 3.

    Sodium fluosilicate has differing flotation effects. It reduces the pH of the medium and promotes desorption of the collector from the surfaces of certain minerals and conversion of the ionic forms of the collector to molecular forms; the silica gel, formed in the solution by hydrolysis of the SiF 2\t-6 ion, also acts on the mineral surfaces by selective attachment of these ions on them. It has differing effects on the minerals.

    In contrast to the hypothesis that SiF 2−6 has a depressing effect, it has been shown for the investigated minerals that its attachment on the surface does not impair flotation. The depressing effect of sodium fluosilicate is due to silica gel, formed by hydrolysis of this salt. It is most probable that the SiF 2−6 anion has a protective effect in the case of fluorine-containing minerals (for example, fluorite and topaz), which prevents attachment of silica gel on the surface (such attachment making the latter markedly hydrophilic).

  4. 4.

    It is shown that under these conditions conversion of the ionic forms of the collector on the mineral surfaces to molecular forms is not the factor characterizing the flotabilities of these minerals.

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Literature Cited

  1. V. I. Avdyukov, A. T. Kvaskov, and D. I. Nagirnyak, “Use of silicofluorides for flotation of hematite and magnetite,” Gorn. Zh., No. 6 (1963).

  2. V. I. Avdyukov, N. V. Kirbitova, and V. K. Babak, “Certain characteristics of the effect of sodium fluosilicate during flotation,” Tr. Inst. Uralmekhanobr, No. 10, Sverdlovsk, BTI “Uralmekhanobr.” (1963).

    Google Scholar 

  3. V. I. Kolmogorova and S. I. Pol'kin, “Reactions of rutile and garnet with flotation controllers,” Izv. Vuzov, Tsvetnaya Metallurgiya, No. 4 (1966).

  4. I. N. Plaksin, G. N. Nazarova, and K. F. Barysheva, “Use of certain control agents for selective flotation of complex rare-metal beneficiation products containing monazite and bastnasite,” in: Beneficiation of Ores and Coal [in Russian], Izd. AN SSSR, Moscow (1963).

    Google Scholar 

  5. I. N. Plaksin and G. A. Myasnikova, “Finishing of crude wolframite concentrates,” in: Beneficiation of Ores and Coal [in Russian], Izd. AN SSSR, Moscow (1963).

    Google Scholar 

  6. E. L. Raukhvager, V. S. Sheveleva, and M. M. Sorokin, “Use of sodium fluosilicate in the flotation of iron ore,” Nauch. Soobshch. IGD AN SSSR, No. 13 (Sci. Reports of the Institute of Mining, Academy of Sciences of the USSR) [in Russian], Izd. AN SSSR, Moscow (1962).

    Google Scholar 

  7. G. F. Suslikov and V. E. Potapenko, “Depressing effect of sodium fluosilicate in the flotation of nepheline ore,” Obgashchenie Rud, No. 3 (1966).

  8. M. A. Éigeles and V. P. Kuznetsov, “Flotation separation of pyrochlore and zircon,” Gornodobyvayushchaya Promyshlennost' Kazakhstana, No. 5 (1962).

  9. M. A. Éigeles and A. V. Mash'yanova, “Reaction of reagents with ilmenite and chlorite by electrokinetic and radiometric methods,” in: Flotation of Silicates and Oxides [in Russian], Gosgeoltekhizdat, Moscow (1961).

    Google Scholar 

  10. K. Nakamoto, Infrared Spectra of Inorganic and Coordination Compounds [Russian translation], Moscow (1966).

  11. A. Cross, Introduction to Practical Infra-red Spectroscopy Butterworth (1964).

  12. LeConte, Infrared Rays [Russian translation], Mir, Moscow (1968).

    Google Scholar 

  13. R. W. Smith and T. J. Smolik, “Infrared and x-ray diffraction study of beryl and feldspars by fluorides in cationic collector systems,” Trans. Soc. Mining Engin. AYME, 232, 3, 196–204 (1965).

    Google Scholar 

  14. G. S. Berger, V. A. Buzunov, L. G. Kislitsina, and V. V. Ishchenko, “Device for determining adsorption of sodium oleate on mineral powders under grain ‘escape’ conditions,” Tsvetnye Metally, No. 2 (1965).

  15. G. S. Berger, V. V. Ishchenko, L. M. Kiselev, and S. A. Tursunova, “Surface forms of sodium oleate on fluorite (from IRS data),” Izv. Vuzov, Tsvetnaya Metallurgiya, No. 6 (1967).

  16. Alan S. Peck and Milton E. Wadsworth, Infrated Study of the Depression Effecr of Fluorite, Sulfate, and Chloride on Chemisorption of Oleate on Fluorite and Barite,” in: 7th International Mineral Process Congress, 1964, Corofon and Breach, Sci. Publishers, New York (1964), pp. 259–267.

    Google Scholar 

  17. Yu. N. Knipovich and Yu. V. Marolevskii, Analysis of Mineral Crude [in Russian], Leningrad (1959).

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Authors and Affiliations

  1. Kazakh Scientific-Research Institute of Mineral Crude, Alma-Ata, Russia

    G. S. Berger & E. V. Bulatova

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  1. G. S. Berger
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  2. E. V. Bulatova
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Translated from Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, No. 4, pp. 100–105, July–August, 1969.

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Berger, G.S., Bulatova, E.V. Mechanism of the activating and depressing effects of sodium fluosilicate in the flotation of minerals by oleate soap. Soviet Mining Science 5, 452–456 (1969). https://doi.org/10.1007/BF02501415

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  • DOI: https://doi.org/10.1007/BF02501415

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