Abstract
The literature review discloses preferability of using the time of induction rather than the wetting angle as a criterion of coal floatability. The authors analyze kinetics of coal flotation as function of surface properties of heteropolar collectors relative to the gas–liquid interface. The correlation between the spreading velocity of collectors on water surface and the coal flotation kinetics is determined as a case-study of fat coal slurries. Justification is given for using the time of displacement of the boundary between three states of aggregation as the time of induction. From the correlation of the spreading velocity of a collector, displacement time of the contact line (induction time) and the flotation velocity, it is found that flotation activity of the collector is governed by its properties relative to the gas–liquid interface.
REFERENCES
Dussan, E.B.V., On the Spreading of Liquids on Solid Surfaces: Static and Dynamic Contact Lines, Ann. Rev. Fluid Mech., 1979, vol. 11, pp. 371–400.
Ye, Y. and Miller, I.D., The Significance of Bubble/Particle Contact Time During Collision in the Analysis of Flotation Phenomena, Int. J. Miner. Process., 1989, vol. 25, pp. 199–219.
Finch, J.A. and Smith, G.W., Dynamic Surface Tension of Alkaline Dodecylamine Acetate Solution in Oxide Flotation, Trans. Inst. Min. Metall., 1972, vol. 81, p. 213.
Rosenbaum, J.M., Fuerstenau, D.W., and Laskowski, J.S., Effect of Surface Functional Groups of the Flotation of Coal, Colloids Surf., 1983, vol. 8, pp. 153–173.
Laskowski, J.S. and Miller, J.D., New Reagents in Coal Flotation. In: M. J. Jones and R. Oblatt (Eds.), Reagents in the Mineral Industry. Inst. Min. Metall., 1984, pp. 145–154.
Fuerstenau, D.W., Yang, G.C.C., and Laskowski, J.S., Oxidation Phenomena in Coal Flotation. 1. Correlation between Oxygen Functional Group Concentration Immersion Wettability and Salt Flotation, Coal Prep., 1987, vol. 4, pp. 161–182.
Laskowski, J.S., The Relationship between Floatability and Hydrophobicity, Advances Miner. Process., AIME, 1986, pp. 189–208.
Nguyen, A.V., Schulze, H.J., and Ralston, J., Elementary Steps in Particle—Bubble Attachment, Int. J. Miner. Process., 1997, vol. 51, pp. 183–195.
Laskowski, J.S., Thermodynamic and Kinetic Flotation Criteria, Miner. Process. Extractive Metal. Rev., 1989, vol. 5, pp. 25–41.
Laskowski, J.S., Rubinstein, J.B., Samygin, V.D., et. al., Frothing in Flotation. II. Recent Advances in Coal Processing, Taylor & Francis Group, 1998, vol. 2, p. 336.
Ye, Y. and Miller, J.D., Bubble/Particle Contact Time in the Analysis of Coal Flotation, Coal Preparation, 1988, vol. 5, pp. 147–166.
Ye, Y., Khandrika, S.M., and Miller, J.D., Induction-Time Measurements at a Particle Bed, Int. J. Miner. Process., 1989, vol. 25, pp. 221–240.
Ye, Y. and Miller, I.D., The Significance of Bubble/Particle Contact Time during Collision in the Analysis of Flotation Phenomena, Int. J. Miner. Process., 1989, vol. 25, pp. 199–219.
Peng F.F. Surface Energy and Induction Time of Fine Coals Treated with Various Levels of Dispersed Collector and Their Correlation to Flotation Responses, Energy & Fuels, 1996, vol. 10, pp 1202–1207.
Kowalczuk, P.B. and Zawala, J., A Relationship between Time of Three-Phase Contact Formation and Flotation Kinetics of Naturally Hydrophobic Solids, Colloids and Surfaces A: Physicochem. Eng. Aspects., 2016. doi:10.1016/j.colsurfa.2016.07.005.
Fedoseeva, S.O. and Morozov, O.A., Effect of Surface Activity and Frothability of Heteropolar Reagents on their Flotation Properties, Obogashch. Polezn. Iskop., 2012, no. 50 (91). Available at: https://core.ac.uk/download/pdf/48400491.
Kondrat’ev, S.A. and Moshkin, N.P., Estimate of Collecting Force of Flotation Agent, Journal of Mining Science, 2015, vol. 51, no. 1, pp. 150–156.
Khamzina, T.A. and Kondrat’ev, S.A., Activity of Different Chemistry Agents in Flotation of Difficult Slack Coal, Journal of Mining Science, 2021, vol. 57, no. 4, pp. 645–653.
Kondrat’ev, S.A., Selecting Collecting Agents for Flotation, Journal of Mining Science, 2022, vol. 58, no. 5, pp. 796–811.
Fuerstenau D.W., Rosenbaum J.M., and Laskowski J. Effect of Surface Functional Groups on the Flotation of Coal, Colloids and Surfaces, 1983, vol. 8, pp 163–174.
Lai, R.W.M. and Smith, R.W., On the Relationship Between Contact Angle and Flotation Behavior, Trans. Am. Inst. Min. Eng., 1966, vol. 235, p. 413.
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Translated from Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, 2023, No. 3, pp. 123-131. https://doi.org/10.15372/FTPRPI20230312.
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Kondrat’ev, S.A., Khamzina, T.A. Effect of Physisorbed Collector on Induction Time and Kinetics in Flotation of Coal Slurries. J Min Sci 59, 457–464 (2023). https://doi.org/10.1134/S1062739123030122
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DOI: https://doi.org/10.1134/S1062739123030122