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Ding S, Yin Q, He Q, Feng X, Yang C, Gui X, Xing Y. Role of hydrophobic fine particles in coarse particle flotation: An analysis of bubble-particle attachment and detachment. Colloids Surf A Physicochem Eng Asp 2023. [DOI: 10.1016/j.colsurfa.2023.130980] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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2
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Zhu S, Gu W, Zhao C, Chen X. Impact behavior of microparticles on the flowing interface. Chem Eng Sci 2023. [DOI: 10.1016/j.ces.2022.118225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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3
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Ding S, Yin Q, Zhang Y, He Q, Feng X, Yang C, Cao Y, Gui X, Xing Y. Mechanism of the hydrophobic particles with different sizes detaching from the oscillating bubble surface. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.128986] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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4
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Numerical studies on bubble dynamics in an unsteady turbulence of the venturi bubble generator applied to TMSR. ANN NUCL ENERGY 2021. [DOI: 10.1016/j.anucene.2021.108322] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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5
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The role of the pulp-froth interface on particle detachment and selectivity. Adv Colloid Interface Sci 2021; 287:102296. [PMID: 33321332 DOI: 10.1016/j.cis.2020.102296] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2020] [Revised: 10/07/2020] [Accepted: 10/17/2020] [Indexed: 11/22/2022]
Abstract
The region between the pulp and the froth also known as pulp/froth interface in mineral flotation processes separates the pulp from the froth. Various researchers suggest particle detachment occurs around this region significantly affecting mineral recovery and grade. One of the causes pointed out is sudden deceleration of bubble-particle aggregate upon collision with the interface while another theory suggests detachment to be caused by bubble coalescence. A possible cause of divergence in views may be in the different methods of investigation employed. Though, more than several researchers indicate that detachment occurs, it is not conclusive whether kinetic energy changes or bubble coalesce or a combination of the two is responsible for detachment if any. Thus, this review examines and presents work that has been done on the role of the pulp-froth interface on particle detachment and selectivity. The review also considers the behaviour of a bubble with various interface as found in literature with a view of inferring the dominant cause of detachment at the interface.
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Guo X, Huang Z, Sun J, Shuai Y, Yang Y, Liao Z, Wang J, Yang Y. Evolution and Interaction Characteristics of Liquid Flow and Bubbles in a Jet Bubbling Column. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.0c04178] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Xiaoyun Guo
- College of Chemical and Biological Engineering, Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology, Zhejiang University, Hangzhou 310027, P. R. China
| | - Zhengliang Huang
- College of Chemical and Biological Engineering, Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology, Zhejiang University, Hangzhou 310027, P. R. China
| | - Jingyuan Sun
- College of Chemical and Biological Engineering, Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology, Zhejiang University, Hangzhou 310027, P. R. China
| | - Yun Shuai
- College of Chemical and Biological Engineering, Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology, Zhejiang University, Hangzhou 310027, P. R. China
| | - Yao Yang
- College of Chemical and Biological Engineering, Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology, Zhejiang University, Hangzhou 310027, P. R. China
| | - Zuwei Liao
- State Key Laboratory of Chemical Engineering, Zhejiang University, Hangzhou 310027, P. R. China
| | - Jingdai Wang
- State Key Laboratory of Chemical Engineering, Zhejiang University, Hangzhou 310027, P. R. China
| | - Yongrong Yang
- State Key Laboratory of Chemical Engineering, Zhejiang University, Hangzhou 310027, P. R. China
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7
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Investigation of bubble-particle attachment, detachment and collection efficiencies in a mechanical flotation cell. POWDER TECHNOL 2020. [DOI: 10.1016/j.powtec.2020.07.085] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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8
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Zhu SJ, Liu RZ, Wang T, Niu YJ, Lu HF, Chen XL. Impact Behavior of Hydrophilic Micron Particles on a Planar Gas-Liquid Interface. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:15017-15028. [PMID: 31638399 DOI: 10.1021/acs.langmuir.9b02657] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The behavior of hydrophilic micron particles impacting on the gas-liquid interface has been further experimentally studied using a high-speed camera at different surface tensions and dynamic viscosities of liquids. The results show that the impact behavior exhibits suspension and submergence modes, whose boundary cannot be clearly identified because the overlap between the impact velocity ranges occurs because of the unstable pinning of the three-phase contact line on the surface of hydrophilic particles. The liquid properties have little effect on the wettability of hydrophilic particles but greatly influence the hydrodynamic and capillary force exerted on the particles, leading to the expansion of the suspension mode range. In addition, the penetration probability changes little with the decrease in surface tension, while it significantly reduces with the increase in dynamic viscosity. A penetration probability model is predicted as an exponential function of the inertial and supporting forces, and the experimental values agree well with the predicted values. The outcomes of this research will be helpful for understanding the mechanism of particle-interface interaction and providing guidance for enhancing the separation of hydrophilic fine ash via a bubble scrubbing system.
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Affiliation(s)
- Shi-Jie Zhu
- Shanghai Engineering Research Center of Coal Gasification , East China University of Science and Technology , Shanghai 200237 , China
| | - Run-Zhe Liu
- Shanghai Engineering Research Center of Coal Gasification , East China University of Science and Technology , Shanghai 200237 , China
| | - Tian Wang
- Shanghai Engineering Research Center of Coal Gasification , East China University of Science and Technology , Shanghai 200237 , China
| | - Yong-Jian Niu
- Shanghai Engineering Research Center of Coal Gasification , East China University of Science and Technology , Shanghai 200237 , China
| | - Hai-Feng Lu
- Shanghai Engineering Research Center of Coal Gasification , East China University of Science and Technology , Shanghai 200237 , China
| | - Xue-Li Chen
- Shanghai Engineering Research Center of Coal Gasification , East China University of Science and Technology , Shanghai 200237 , China
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9
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Wang P, Cilliers JJ, Neethling SJ, Brito-Parada PR. Effect of Particle Size on the Rising Behavior of Particle-Laden Bubbles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:3680-3687. [PMID: 30785756 DOI: 10.1021/acs.langmuir.8b04112] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The rising behavior of bubbles, initially half and fully coated with glass beads of various sizes, was investigated. The bubble velocity, aspect ratio, and oscillation periods were determined using high-speed photography and image analysis. In addition, the acting forces, drag modification factor, and modified drag coefficient were calculated and interpreted. Results show that the aspect ratio oscillation of the rising bubbles is similar, irrespective of the attached particle size. As the particle size is increased, the rising bubbles have a lower velocity and aspect ratio amplitude, with the time from release to each aspect ratio peak increasing. Higher particle coverage is shown to decrease the bubble velocity and dampen the oscillations, reducing the number of aspect ratio peaks observed. The highest rise velocities correspond to the lowest aspect ratios and vice versa, whereas a constant aspect ratio yields a constant rise velocity, independent of the particle size. Force analysis shows that the particle drag modification factor increases with the increased particle size and is greatest for fully laden bubbles. The modified drag coefficient of particle-laden bubbles increases with the increased particle size, although it decreases with the increased Reynolds number independent of the particle size. The drag force exerted by the particles plays a more dominant role in decreasing bubble velocities as the particle size increases. The results and interpretation produced a quantitative description of the behavior of rising particle-laden bubbles and the development of correlations will enhance the modeling of industrial applications.
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Affiliation(s)
- Peipei Wang
- Advanced Mineral Processing Research Group, Department of Earth Science and Engineering , Imperial College London , London SW7 2AZ , U.K
| | - Jan J Cilliers
- Advanced Mineral Processing Research Group, Department of Earth Science and Engineering , Imperial College London , London SW7 2AZ , U.K
| | - Stephen J Neethling
- Advanced Mineral Processing Research Group, Department of Earth Science and Engineering , Imperial College London , London SW7 2AZ , U.K
| | - Pablo R Brito-Parada
- Advanced Mineral Processing Research Group, Department of Earth Science and Engineering , Imperial College London , London SW7 2AZ , U.K
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Oliveira GA, Monje-Ramirez I, Carissimi E, Rodrigues RT, Velasquez-Orta SB, Mejía ACC, Orta Ledesma MT. The effect of bubble size distribution on the release of microalgae proteins by ozone-flotation. Sep Purif Technol 2019. [DOI: 10.1016/j.seppur.2018.10.005] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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11
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Zhang M, Li T, Ma S, Wang G. An experimental study of copper sulfide flotation in a packed cyclonic–static microbubble flotation column. SEP SCI TECHNOL 2018. [DOI: 10.1080/01496395.2018.1447963] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
- Min Zhang
- College of Resources and Metallurgy, Guangxi University, Nanning, China
| | - Tenglong Li
- College of Resources and Metallurgy, Guangxi University, Nanning, China
| | - Shaojian Ma
- College of Resources and Metallurgy, Guangxi University, Nanning, China
| | - Guichao Wang
- Discipline of Chemical Engineering, School of Engineering, University of Newcastle, Newcastle, Australia
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Xu X, Ge X, Qian Y, Wang H, Yang Q. Bubble‐separation dynamics in a planar cyclone: Experiments and CFD simulations. AIChE J 2018. [DOI: 10.1002/aic.16115] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Xiao Xu
- Key Laboratory of Pressure Systems and Safety, Ministry of EducationEast China University of Science and TechnologyShanghai 200237 P.R. China
| | - Xiao‐Ling Ge
- Key Laboratory of Pressure Systems and Safety, Ministry of EducationEast China University of Science and TechnologyShanghai 200237 P.R. China
| | - Yun‐Dong Qian
- Key Laboratory of Pressure Systems and Safety, Ministry of EducationEast China University of Science and TechnologyShanghai 200237 P.R. China
| | - Hua‐Lin Wang
- State Key Laboratory of Chemical EngineeringEast China University of Science and TechnologyShanghai 200237 P.R. China
| | - Qiang Yang
- State Environmental Protection Key Lab of Environmental Risk Assessment and Control on Chemical ProcessEast China University of Science and TechnologyShanghai 200237 P.R. China
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