The Role of Physically Adsorbing Species of Oxyhydryl Reagents in Flotation Aggregate Formation

Authors: S. A. Kondratyev, O. I. Ibragimova

Abstract:

The authors discuss the collecting abilities of desorbable species (DS) of saturated fatty acids. The DS species of the reagent are understood as species capable of moving from the surface of the mineral particle to the bubble at the moment of the rupture of the interlayer of liquid separating these objects of interaction. DS species of carboxylic acids (molecules and ionic-molecular complexes) have the ability to spread over the surface of the bubble. The rate of their spreading at pH 7 and 10 over the water surface is determined. The collectibility criterion of saturated fatty acids is proposed. The values of forces exerted by the spreading DS species of reagents on liquid in the interlayer and the liquid flow rate from the interlayer are determined.

Keywords: Criterion of action of physically adsorbed reagent, flotation, saturated fatty acids, surface pressure.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1132505

References:

[1] R. D. Kulkarni, P. Somasundaran, “Kinetics of oleate adsorption at the liquid/air interface and its role in hematite flotation,” AIChE Symposium series, 1975, vol. 71, pp. 124–133.
[2] R. D. Kulkarni, P. Somasundaran, “Flotation chemistry of hematite/oleate system,” Colloids and Surfaces, 1980, vol. 1, pp. 387-405.
[3] K. Quast, “Flotation of hematite using C6–C18 saturated fatty acids,” Minerals Engineering, 2006, vol. 19, pp. 582–597.
[4] A. Bleier, E. D. Goddard, and R. D. Kulkarni,“Adsorption and critical flotation conditions,” Journal of Colloid and Interface Science, 1977, vol. 59, pp. 490–504.
[5] J. A. Finch, G. W. Smith, “Dynamic superficial tension of alkaline dodecylamine solutions,” Journal of Colloid and Interface Science, 1973, vol. 45, pp. 81–91.
[6] G. V Zhivankov, V. I. Ryaboy, “Collective properties and surface activity of higher air floats,” Obogashchenie rud—Ore Dressing Treatment, no. 3, 13 –16.
[7] P. Somasundaran, “The relationship between adsorption at different interfaces and flotation behavior”. Transactions of the Society of Mining Engineers of AIME, 1968, vol. 241, pp. 105–109.
[8] P. Somasundaran, D.W. Fuerstenau, “On incipient flotation conditions,” Transactions of the Society of Mining Engineers of AIME, 1968, vol. 241, pp. 102–104.
[9] S. A. Kondratyev, “Estimation of reagents-collectors flotation activity,” Obogashchenie rud—Ore Dressing Treatment, 2010, vol. 4, pp. 24–30.
[10] S. A. Kondratyev, “Activity and Selectivity of Carboxylic Acids as Flotation Agents,” Journal of Mining Science, 2012, vol. 48, pp. 1039–1046.
[11] S. A. Kondratyev, N. P. Moshkin, “Estimate of collecting force of flotation reagent,” Journal of Mining Science, 2015, vol. 51, pp. 150–156.
[12] R. Sivamohan, P.de Donato, J. M. Cases, “Adsorption of oleate species at the fluorite-aqueous solution interface,” Langmuir, 1990, vol. 6, pp. 637–644.
[13] J. A. Mielczarski, J. M. Cases, E. Bouquet, O. Barres, and J. F. Delon, “Nature and structure of adsorption layer on apatite contacted with oleate solutions 1. Adsorption and Fourier transform infrared reflection studies,” Langmuir, 1993, vol. 9, pp. 2370–2382.
[14] O. S. Bogdanov, N. S. Mikhailova, “Effect of crystal of dry iron oxides on their floatability,” Obogashchenie rud—Ore Dressing Treatment, 1966, vol. 4, pp. 19–23.
[15] S. I. Polkin, Processing of Ores and Rare and Noble Metals, Moscow: Nedra, 1987, p. 428. (in Russian).
[16] A. A. Abramov, “Method for quantitative determination of the sorption forms of solvents on mineral surfaces,” Journal of Mining Science, 1968, vol. 4, no. 4, pp. 384–389.
[17] V. G. Levich, Physicochemical Hydrodynamics, 2nd Ed., Englewood Cliffs, New Jersey: Prentice-Hall, 1962, p.700.
[18] L. G. Loytsyansky, Fluid Mechanics, Nauka, 1978, p.736. (in Russian).