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Asymmetric 1,2-diacylhydrazines as reagents for ionic flotation

  • Mineral Processing of Nonferrous Metals
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Abstract

The physicochemical properties (solubility, acidic-basic equilibria, stability to hydrolysis and oxidation, and kinetics of foam formation) of asymmetric 1,2-diacylhydrazines with the general formula C6H5C(O)NHNHC(O)R1 (where R1 = CH3, C2H5, and C3H7) and CH3C(O)NHNHC(O)R2 (where R2 = C7H15, C9H19, and C10H21), which are necessary to their evaluation as potential reagents, are investigated. By the example of 1-acetyl-2-octanoylhydrazine, it is shown that the reagents can be used for the removal of ions of Cu(II), Co(II), Ni(II), and Zn(II) ammonia solutions with low metal contents by the ion flotation method. The maximum degree of recovery at pH 9.8 was Cu(II) 88.0, Co(II) 98.0, Ni(II) 99.5, and Zn(II) 95.0. The residual concentration of metal ions corresponds to the regulations for the maximum permissible concentrations of tap water.

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Authors and Affiliations

  1. Institute of Technical Chemistry, Ural Division, Russian Academy of Sciences, ul. Akademika Koroleva 3, Perm, 614013, Russia

    L. G. Chekanova, A. V. Radushev & E. V. Baigacheva

  2. Perm State University, ul, Bukireva 15, Perm, 614099, Russia

    Yu. B. El’chishcheva & M. G. Shcherban’

Authors
  1. L. G. Chekanova
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  2. Yu. B. El’chishcheva
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  3. M. G. Shcherban’
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  4. A. V. Radushev
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  5. E. V. Baigacheva
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Corresponding author

Correspondence to L. G. Chekanova.

Additional information

Original Russian Text © L.G. Chekanova, Yu.B. El’chishcheva, M.G. Shcherban’, A.V. Radushev, E.V. Baigacheva, 2010, published in Izvestiya VUZ. Tsvetnaya Metallurgiya, 2010, No. 1, pp. 14–17.

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Chekanova, L.G., El’chishcheva, Y.B., Shcherban’, M.G. et al. Asymmetric 1,2-diacylhydrazines as reagents for ionic flotation. Russ. J. Non-ferrous Metals 51, 8–11 (2010). https://doi.org/10.3103/S1067821210010025

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  • DOI: https://doi.org/10.3103/S1067821210010025

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