turbulent flotation cell
Turbulence in flotation cells ScienceDirect
1987-8-1 It can be supposed that the turbulent fluctuation of velocity is constant and the small variation with cell size is due to the variation of some parameter held as constant. Another
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Turbulence in flotation cells, a simplified approach
1992-1-1 An easy way of deriving the equations for the turbulent fluctuation of velocity in a flotation cell is presented. The equations are of the same form as derived earlier, but the
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Turbulence model development for flotation cells based
2016-11-10 Deglon et al. (1999) simulated the effects of turbulence on the flotation rate constant in three sizes of flotation cells with volumes of 1, 10 and 100 m 3 using models of attachment
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Behaviour of bubble clusters in a turbulent flotation cell
2015-1-1 This study is concerned with the behaviour of bubble clusters in turbulent flotation cell. The breakup and re-formation of clusters and the effect of bubble size and impeller speed on
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Flotation Cells Centre for Minerals Research University
2022-10-12 Novel Flotation Cells: Research focuses on investigating the effect of energy/agitation on particle-bubble contacting in different types of turbulent multi-phase flow
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Flotation Cell an overview ScienceDirect Topics
The MAC flotation cell is mainly used in the flotation section of waste paper deinking pulping, for removal of hydrophobic impurities such as filler, ash, ink particles, etc. It can increase pulp
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Measuring turbulence in flotation cells with piezoelectric
2013-11-1 Conference: Sixth International Flotation Conference (Flotation '13) MEI Conference; At: Cape Town, South Africa
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CFD-based multiscale modelling of bubble–particle
2009-12-16 To improve the model predictive capability, Liu et al. (2005) proposed a CFD-based multiscale modelling methodology for a flotation cell that takes into account turbulent multi
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The detachment of particles from bubbles at various
2019-3-1 Particles and bubbles are brought together in the turbulent environment in a mechanical flotation cell, and in general terms, the greater the local rate of dissipation of
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New techniques for measuring turbulence in flotation cells
Turbulence and its distribution are of great importance in flotation cell design as they affect suspension of particles, air dispersion and particle-bubble collision rates, which in turn determine flotation performance. However, there is no mature technique to measure turbulence in three phase (liquid-solid-gas) systems such as in flotation cells.
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Measuring turbulence in a flotation cell using electrical
Abstract Measuring turbulence in an industrial flotation environment has long been problematic due to the opaque, aggressive, and abrasive three-phase environment in a flotation cell. One of the promising measurement techniques is electrical resistance tomography (ERT).
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New techniques for measuring turbulence in flotation cells
2014-10-23 Turbulence and its distribution are of great importance in flotation cell design as they affect suspension of particles, air dispersion and particle-bubble collision rates, which in turn...
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(PDF) Measuring turbulence in a flotation cell using
2015-11-1 As far as the mechanism of flotation is concerned, turbulence is one of the key parameters determining flotation performance because it affects three main processes: suspension of particles,...
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Measuring turbulence in a flotation cell using the
2014-11-1 In a mechanical flotation machine, energy inputs at the impeller and its vicinity are higher than that at other regions of the cell, which brings about the intensively inhomogeneous and...
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Measuring turbulence in flotation cells with piezoelectric
2013-11-1 Conference: Sixth International Flotation Conference (Flotation '13) MEI Conference; At: Cape Town, South Africa
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Turbulent Microflotation: Theory and Experiment Request
2001-11-1 The theory of turbulent microflotation is based on pre-aggregation of particles to reach an aggregate size of greater than 7 lm, utilisation of microbubbles with initial dimensions smaller than...
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Effect of Turbulence in Fine Bubbles Flotation
2017-12-6 The lines on figure 5 represent model predictions. Dissipation energy is a measure of the turbulence within the. flotation cell. As agitation rate increases the turbulence within the flotation cell increases, and consequently so does the flotation rate. From equation 4, Up and Ub are proportional to ε.
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Effect of flotation feed density on the operation
2012-10-29 This rig consists of a 3 m 3 flotation tank fitted with a RCS mechanism located on an upper platform with the products from the flotation unit discharging via gravity to a pump sump located on...
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Influence of hydrodynamic variables on scaling up of
2022-10-13 These results for the 7.5-L cell indicated that the flotation time could be increased beyond 15 min since the fitted trend showed a positive linear relationship between time and recovery. In general, an increase in superficial gas velocity results in faster flotation kinetics in both cells. Previous studies have also shown similar results.
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Turbulence model development for flotation cells based
In the study presented in this paper, the PVS was first applied to a sugary water-air two phase mixture in a 3 m 3 pilot flotation cell, and then to a TON RCS 3 m 3 flotation test rig with magnetite/silica slurry and air, to collect turbulence data. An orthogonal experimental design was used for both sets of tests, with different impeller
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Measuring turbulence in a flotation cell using the
Experimental results and comparison with Laser Doppler Anemometry (LDA) measurement data showed that the PVS can measure intensity of kinetic energy fluctuation (σ v2), which has been found in experiments to correlate with turbulent kinetic energy (TKE), a parameter often related to flotation performance in the literature. The sensor was then
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(PDF) Measuring turbulence in a flotation cell using the
Measuring turbulence in a flotation cell using the piezoelectric sensor (PDF) Measuring turbulence in a flotation cell using the piezoelectric sensor Kym Runge and Weiguo Xie Academia.edu Academia.edu no longer supports Internet Explorer.
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Behaviour of bubble clusters in a turbulent flotation cell
Behaviour of bubble clusters in a turbulent flotation cell @article{Chen2015BehaviourOB, title={Behaviour of bubble clusters in a turbulent flotation cell}, author={Zhihao Chen and Seher Ata and Graeme J. Jameson}, journal={Powder Technology}, year={2015}, volume={269}, pages={337-344} } Zhihao Chen, Seher Ata, G. Jameson; Published 2015
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(PDF) Measuring turbulence in a flotation cell using
2015-11-1 As far as the mechanism of flotation is concerned, turbulence is one of the key parameters determining flotation performance because it affects three main processes: suspension of particles,...
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Measuring turbulence in a flotation cell using the
2014-11-1 In a mechanical flotation machine, energy inputs at the impeller and its vicinity are higher than that at other regions of the cell, which brings about the intensively inhomogeneous and...
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Development and application of a technique for
2012-9-1 Flotation studies carried out using this sensor in a 3m^3 TON RCS cell processing a copper sulphide ore showed a highly turbulent impeller zone with transition to a significantly less turbulent
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Flotation Cells Mineral Processing & Metallurgy
2015-12-14 Flotation Cell Design and Flotation Flowsheets The “Sub-A” Operates in three zones: in bottom zone, impeller thoroughly mixes and aerates the pulp, the central zone separates the mineral laden particles from the
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Development of a Turbulent Flotation Model from First
2021-11-29 the events occurring in both the pulp and froth phases of a mechanically-agitated flotation cell. The pulp-phase model is based on predicting the kinetics of bubble-particle attachment using the DLVO extended to include contributions from hydrophobic force and the theory of turbulent collision.
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CFD-based multiscale modelling of bubble–particle
2009-12-1 Liu and Schwarz (2009) used a 3D low turbulent Reynolds number shear-stress-transport turbulence model to study the effects of turbulence in a flotation cell. Modelled from a multi-scale viewpoint
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