Flotation of methylated roughened glass particles and analysis of particle–bubble energy barrier

Güven, Onur; Çelik, M. S.; Drelich, Jaroslaw

doi:10.1016/j.mineng.2015.06.003

Cited by 74 publications

(22 citation statements)

References 29 publications

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“…The shape of particles and their surface topography and chemical makeup might complicate their flotation performance, and these differences are reflected in the individual steps of the particle-bubble attachment and detachment. It is only recently that both particle shape 31 and surface roughness 32 have received deserved attention among mineral processing researchers.…”

Section: Defining Mineral Surfacesmentioning

confidence: 99%

Meaningful Contact Angles in Flotation Systems: Critical Analysis and Recommendations

Drelich

MarmurAbraham

2017

Surface Innovations

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2Froth flotation was invented in the nineteenth century. Since then, many laboratories have been committed to both fundamental and applied research on the collection of particles by dispersed gas bubbles in aqueous solutions of electrolytes, in particular those working on the processing of natural resources. However, despite the tremendous progress made in the characterization of particles and their surfaces and understanding particle-bubble interactions, supported by detailed recordings of gas bubble attachments to both bulk specimens and particles, the flotation process remains poorly correlated with the wetting characteristics of particle surfaces. In fact, the contact angles used frequently to describe the wettability of mineral surfaces remain among the most controversial, misunderstood and misinterpreted values in mineral processing literature.

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Section: Defining Mineral Surfacesmentioning

confidence: 99%

Meaningful Contact Angles in Flotation Systems: Critical Analysis and Recommendations

Drelich

MarmurAbraham

2017

Surface Innovations

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“…Copper flotation operations have attracted special interest in the scientific community. Some works include the adjustment of phenomenological models through mathematical programming [15], conceptual and analytical designs of concentration circuits [16][17][18], sensitivity analysis [19], the performance evaluation of flotation banks and circuit designs using machine learning techniques [20][21][22][23], studies of the dynamic behavior of particles and bubbles with respect to recovery efficiency [24][25][26][27][28][29][30], the determination of the influence of factors on recovery [31], the impact of gas dispersion measures [32], and effect of clay minerals [33]. Foremost among the simulation and optimization methodologies are the use of mixed-integer linear and nonlinear programming algorithms [34], the optimization of recovery performance on the basis of the depth of the froth [35], methodologies for optimizing grinding and flotation using automated mineralogy data [36], reagent dose control methods based on optimal bubble size distribution [37], and optimization methodologies applied to frothing recovery, superstructures, mathematical models, and algorithms.…”

Section: Introductionmentioning

confidence: 99%

Analysis of the Dynamics of Rougher Cells on the Basis of Phenomenological Models and Discrete Event Simulation Framework

Saldaña

Neira

Flores

et al. 2021

Metals

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Due to the increase in the amount of copper sulphide minerals processed through concentration processes and the need to improve the efficiency of these production processes, the development of theoretical models is making an important contribution to generating a better understanding of their dynamics, making it possible to identify the optimal conditions for the recovery of minerals, the impact of the independent variables in the responses, and the sensitivity of the recovery to variations in both the input variables and the operational parameters. This paper proposes a method for modeling, sensitizing, and optimizing the mineral recovery in rougher cells using a discrete event simulation (DES) framework and the fitting of analytical models on the basis of operational data from a concentration pilot plant. A sensitivity analysis was performed for low, medium, and high levels of the operative variables and/or parameters. The outcomes of the modeling indicate that the optimum mineral recovery is reached at medium levels of the flow rate of gas, bubble size, turbulence dissipation rate, surface tension, Reynolds number of bubble, bubble–particle contact angle, superficial gas velocity and gas hold-up in the froth zone. Additionally, the optimal response is reached at maximum levels of particle size and density and at minimum levels of bubble speed, fluid kinematic viscosity and fluid density in the sampled range. Finally, the recovery has an asymptotic behavior over time; however, the optimum recovery depends on an economic analysis, examining the marginalization of the response over time in an operational context.

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“…One of its aspects is kinetics [4][5][6][7][8][9][10][11][12][13]. The kinetics of process significantly influences the economics of flotation.…”

Section: Introductionmentioning

confidence: 99%

Local and global assessment of flotation kinetics

2016

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Abstract. Most flotation data can be approximated with the first order kinetic equation. However, this equation frequently provides two, not one, parameters, that is the first order flotation rate constant k and maximum flotation recovery Rmax. Currently, the most often way of evaluation of a set of flotation data is by using efficiency eto = k Rmax, being the slope of flotation kinetic curve at zero flotation time (t=0). This parameter has a local character and is useful only in very limited cases. It was proposed in this work to use a global flotation kinetic efficiency (e) which can characterize the whole set of kinetic curves. For the considered in this work flotation data, a simple relation Rmax = e k was used. For other sets of flotation data, the global flotation kinetics efficiency very likely will be represented by another equation with the one-adjustable parameter.

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Flotation of methylated roughened glass particles and analysis of particle–bubble energy barrier

Cited by 74 publications

References 29 publications

Meaningful Contact Angles in Flotation Systems: Critical Analysis and Recommendations

Meaningful Contact Angles in Flotation Systems: Critical Analysis and Recommendations

Analysis of the Dynamics of Rougher Cells on the Basis of Phenomenological Models and Discrete Event Simulation Framework

Local and global assessment of flotation kinetics

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