Document Type : Original Research Paper

Authors

1 Mining Engineering Department, Graduate School of Natural and Applied Sciences, Sivas Cumhuriyet University, 58140 Sivas, Türkiye

2 Department of Mining Engineering, Faculty of Engineering Sciences, Omdurman Islamic University, P.O.BOX Khartoum 10257, Omdurman 382, Sudan

3 Industrial Engineering Department, Sivas Cumhuriyet University, 58140 Sivas, Türkiye

Abstract

This work optimizes coarse particle flotation using microbubble-assisted flotation in a cationic environment created by dodecylamine (DDA). The flotation efficiency of coarse quartz particles (D50 = 495 μm) was investigated through an examination of the interactions between microbubbles (20-30 μm), the cationic environment, and various operational parameters. A systematic approach utilizing factorial and Box-Behnken experimental designs was employed to evaluate the effects of the multiple variables. These variables included the dodecylamine (DDA) concentration, methyl isobutyl carbinol (MIBC) concentration, impeller speed, pulp density, the addition of fine particles, and the presence of microbubbles. The DDA concentration and the impeller speed significantly impacted the coarse particle recovery, while microbubbles increased recovery by 15% under non-optimized conditions; optimization revealed a more negligible difference. The optimized conditions achieved maximum recoveries of 99.47% and 97.88% with and without microbubbles, respectively, indicating the minimal effect when other parameters were optimized. This research work shows that a careful optimization of the flotation parameters can achieve high coarse particle recovery rates, with microbubbles playing a less significant role than anticipated. These findings suggest that optimizing the conventional parameters may be more crucial than the microbubble introduction for enhancing the flotation efficiency of larger particles. The work contributes to our understanding of coarse particle flotation, and provides insights for improving the mineral processing techniques for challenging the particle sizes.

Keywords

Main Subjects

[1]. B.A. Wills, J. Finch (2015). Wills’ mineral processing technology: an introduction to the practical aspects of ore treatment and mineral recovery, Butterworth-heinemann.
[2]. S. Farrokhpay, L. Filippov, D. Fornasiero (2021). Flotation of fine particles: A review, Mineral Processing and Extractive Metallurgy Review, 42, 473–483.
[3]. D. Tao (2005). Role of Bubble Size in Flotation of Coarse and Fine Particles - A Review, Sep Sci Technol, 39, 741–760.
[4]. C. Gontijo, D. Fornasiero, J. Ralston (2008). The Limits of Fine and Coarse Particle Flotation, Can J Chem Eng, 85, 739–747.
[5]. G.J. Jameson (2010). Advances in Fine and Coarse Particle Flotation, Canadian Metallurgical Quarterly, 49, 325–330.
[6]. S. Ata, G.J. Jameson (2013). Recovery of coarse particles in the froth phase–A case study, Miner Eng, 45, 121–127.
[7]. D. Xu, I. Ametov, S.R. Grano (2011). Detachment of coarse particles from oscillating bubbles—The effect of particle contact angle, shape and medium viscosity, Int J Miner Process, 101, 50–57.
[8]. A. Hassanzadeh, M. Safari, D.H. Hoang, H. Khoshdast, B. Albijanic, P.B. Kowalczuk (2022). Technological assessments on recent developments in fine and coarse particle flotation systems, Miner Eng, 180.
[9]. S. Nazari, A. Hassanzadeh, Y. He, H. Khoshdast, P.B. Kowalczuk (2022). Recent Developments in Generation Detection and Application of Nanobubbles in Flotation, Minerals 12.
[10]. S. Farrokhpay, I. Ametov, S. Grano (2011). Improving the recovery of low grade coarse composite particles in porphyry copper ores, in: Advanced Powder Technology, pp. 464–470.
[11]. V. Kromah, S.B. Powoe, R. Khosravi, A.A. Neisiani, S.C. Chelgani (2022). Coarse particle separation by fluidized-bed flotation: A comprehensive review, Powder Technol 409.
[12]. S.J. Anzoom, G. Bournival, S. Ata (2024). Coarse particle flotation: A review, Miner Eng, 206, 108499.
[13]. S. Nazari, A. Hassanzadeh (2020). The effect of reagent type on generating bulk sub-micron (nano) bubbles and flotation kinetics of coarse-sized quartz particles, Powder Technol, 374, 160–171.
[14]. S. Nazari, S. Chehreh Chelgani, S.Z. Shafaei, B. Shahbazi, S.S. Matin, M. Gharabaghi (2019). Flotation of coarse particles by hydrodynamic cavitation generated in the presence of conventional reagents, Sep Purif Technol 220, 61–68.
[15]. M. Fan, Y. Zhao, D. Tao (2012). Fundamental studies of nanobubble generation and applications in flotation, Separation Technologies for Minerals, Coal, and Earth Resources, 457–469.
[16]. S. Nazari, S.Z. Shafaei, B. Shahbazi, S. Chehreh Chelgani (2018). Study relationships between flotation variables and recovery of coarse particles in the absence and presence of nanobubble, Colloids Surf A Physicochem Eng Asp, 559, 284–288.
[17]. D. Tao (2022). Recent advances in fundamentals and applications of nanobubble enhanced froth flotation: A review, Miner Eng, 183, 107554.
[18]. S. Zhou, Y. Li, S. Nazari, X. Bu, A. Hassanzadeh, C. Ni, Y. He, G. Xie (2022). An assessment of the role of combined bulk micro- and nano-bubbles in quartz flotation, Minerals, 12, 944.
[19]. L.O. Filippov, I.V. Filippova, V. V Severov (2010). The use of collector mixture in the reverse cationic flotation of magnetite ore: The role of Fe-bearing silicates, Miner Eng, 23, 91–98.
[20]. M.C. Fuerstenau, G.J. Jameson, R.-H. Yoon (2007). Froth flotation: a century of innovation, SME.
[21]. A. Vidyadhar, K.H. Rao, I. V Chernyshova, Pradip, K.S.E. Forssberg (2002). Mechanisms of Amine–Quartz Interaction in the Absence and Presence of Alcohols Studied by Spectroscopic Methods, J Colloid Interface Sci, 256, 59–72.
[22]. A.M. Nowosielska, A.N. Nikoloski, D.F. Parsons (2022). Interactions between coarse and fine galena and quartz particles and their implications for flotation in NaCl solutions, Miner Eng, 183, 107591.
[23]. C. Zhou, L. Liu, J. Chen, F. Min, F. Lu (2022). Study on the influence of particle size on the flotation separation of kaolinite and quartz, Powder Technol, 408, 117747.
[24]. E.H. Girgin, S. Do, C.O. Gomez, J.A. Finch (2006). Bubble size as a function of impeller speed in a self-aeration laboratory flotation cell, Miner Eng, 19, 201–203.
[25]. W.X. Weimin Xie, D.H. Dongsheng He, S.L. Shuang Liu, F.C. Fei Chen, H.L. Hongqiang Li (2020). Effect of pH and Dodecylamine Concentration on the Properties of Dodecylamine Two-Phase foam, Journal of the Chemical Society of Pakistan, 42, 495–495.
[26]. G. Fan, L. Wang, Y. Cao, C. Li (2020). Collecting agent–mineral interactions in the reverse flotation of iron ore: A brief review, Minerals, 10, 681.
[27]. B.K. Gorain, J.P. Franzidis, E. V Manlapig (1997). Studies on impeller type, impeller speed and air flow rate in an industrial scale flotation cell. Part 4: Effect of bubble surface area flux on flotation performance, Miner Eng, 10, 367–379.
[28]. G.J. Jameson, A. V Nguyen, S. Ata (2007). The flotation of fine and coarse particles, Froth Flotation: A Century of Innovation, 339–372.
[29]. K.-A. Duffy, K. Runge, E. Tabosa (2013). Strategies for increasing coarse particle flotation in conventional flotation cells.
[30]. R.M. Rahman, S. Ata, G.J. Jameson (2012). The effect of flotation variables on the recovery of different particle size fractions in the froth and the pulp, Int J Miner Process, 106–109, 70–77.
[31]. R. Ahmadi, D.A. Khodadadi, M. Abdollahy, M. Fan (2014). Nano-microbubble flotation of fine and ultrafine chalcopyrite particles, Int J Min Sci Technol, 24, 559–566.
[32]. B. Elvers (1991). Ullmann’s encyclopedia of industrial chemistry, Verlag Chemie Hoboken, NJ.
[33]. Y.S. Cho, J.S. Laskowski (2002). Effect of flotation frothers on bubble size and foam stability, Int J Miner Process, 64, 69–80.
[34]. J.G. Wiese, P.J. Harris, D.J. Bradshaw (2010). The effect of increased frother dosage on froth stability at high depressant dosages, in: Miner Eng, pp. 1010–1017.
[35]. S. Nazari, S. Chehreh Chelgani, S.Z. Shafaei, B. Shahbazi, S.S. Matin, M. Gharabaghi (2019). Flotation of coarse particles by hydrodynamic cavitation generated in the presence of conventional reagents, Sep Purif Technol, 220, 61–68.
[36]. Y. Li, F. Wu, W. Xia, Y. Mao, Y. Peng, G. Xie (2020). The bridging action of microbubbles in particle-bubble adhesion, Powder Technol, 375, 271–274.
[37]. S. Nazari, S.Z. Shafaei, M. Gharabaghi, R. Ahmadi, B. Shahbazi (2018). Effect of frother type and operational parameters on nano bubble flotation of quartz coarse particles, Journal of Mining & Environment, 9, 539–546.
[38]. H. Darabi, S.M.J. Koleini, D. Deglon, B. Rezai, M. Abdollahy (2019). Investigation of bubble-particle interactions in a mechanical flotation cell, part 1: Collision frequencies and efficiencies, Miner Eng, 134, 54–64.
[39]. S. Farrokhpay, D. Fornasiero (2017). Flotation of coarse composite particles: Effect of mineral liberation and phase distribution, Advanced Powder Technology, 28, 1849–1854.
[40]. D. Wang, Q. Liu (2021). Hydrodynamics of froth flotation and its effects on fine and ultrafine mineral particle flotation: A literature review, Miner Eng, 173.
[41]. A.M. Vieira, A.E.C. Peres (2007). The effect of amine type, pH, and size range in the flotation of quartz, Miner Eng, 20, 1008–1013.
[42]. C. Bazin, M.P. Proulx (2001). Distribution of reagents down a flotation bank to improve the recovery of coarse particles. www.elsevier.nlrlocaterijminpro.
[43]. J. Rubio, A. Azevedo, R.T. Rodrigues, G.R. Olivares (2024). Amine-coated nanobubbles-assisted flotation of fine and coarse quartz, Miner Eng, 218, 108983.
[44]. S. Nazari, A. Hassanzadeh (2020). The effect of reagent type on generating bulk sub-micron (nano) bubbles and flotation kinetics of coarse-sized quartz particles, Powder Technol, 374, 160–171.
[45]. S. Nazari, S.Z. Shafaei, M. Gharabaghi, R. Ahmadi, B. Shahbazi, A. Tehranchi (2020). New approach to quartz coarse particles flotation using nanobubbles, with emphasis on the bubble size distribution, Int J Nanosci, 19, 1850048.