A review of turbulence measurement techniques for flotation

Meng, Jun; Tabosa, Erico; Xie, Weiguo; Runge, Kym; Bradshaw, Dee; Manlapig, E.

doi:10.1016/j.mineng.2016.06.007

Cited by 30 publications

(9 citation statements)

References 81 publications

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“…The overall effect of AFR on flotation results are shown at high AFR, the grade of concentrate is reduced and the recovery is increased due to entrainment. The results imply that the entrainment is the major effect of AFR [9] [10] [11] [12] [13].…”

Section: Variables Interaction Effectsmentioning

confidence: 99%

Iron Bearing Minerals Flotation from Silica Sand Using Hydroxyl Surfactants

Ibrahim¹,

Fathy²,

Elsayed³

et al. 2021

JMMCE

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A technological clayey sandstone sample from Wadi Qena locality, Eastern Desert of Egypt, was directed to processing. Fine kaolin and clean silica sand were produced after intensive attrition scrubbing of the sample. To increase the quality of the produced silica, it was subjected to reverse anionic flotation to minimize its iron content. In this respect, conventional flotation tests using three anionic oxyhydryl surfactants namely: sodium dodecyl benzene sulphonate, sodium naphtha sulphonate, and sodium dodecyl sulphate, were tried. Results showed a privilege action for sodium dodecyl sulphate to remove most of the iron oxide content of the sample. A statistical Box-Behnken design was constructed to optimize the process efficiency. It was shown that from a flotation feed contained 360 ppm Fe 2 O 3 and 1190 ppm Al 2 O 3 , sand concentrate contained 29 ppm Fe 2 O 3 and 564 ppm Al 2 O 3 , was produced. The optimum flotation conditions were 3.86 kg/t sodium dodecyl sulphate dose, 3.22 flotation pulp pH, 1226 rpm impeller speed, and 22.24 L/min airflow rate. Variables interaction effects results showed that flotation separation efficiency was significantly influenced by air flow rate and cell impeller speed of the process.

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Section: Variables Interaction Effectsmentioning

confidence: 99%

Iron Bearing Minerals Flotation from Silica Sand Using Hydroxyl Surfactants

Ibrahim¹,

Fathy²,

Elsayed³

et al. 2021

JMMCE

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“…So far, studies investigated either the individual bubble-particle interaction in a quiescent flow without turbulence (Nguyen and Kmeť, 1992;Nguyen and Schulze, 2003;Basařová et al, 2010), or the influence of turbulence on multiphase flows in a flotation cell (Hassanzadeh et al, 2018). One reason for the lack is the opaqueness of the concentrated particle-bubble-dispersion (Meng et al, 2016) which prevents the usage of optical measurement techniques. Therefore, Brady et al (2006) used low gas and solid fractions to investigated the influence of turbulence on the velocity of particles and bubbles using a time-resolved Particle Image Velocimetry (PIV) and Particle Tracking Velocimetry (PTV) system.…”

Section: Introductionmentioning

confidence: 99%

Application of Positron Emission Particle Tracking (PEPT) to measure the bubble-particle interaction in a turbulent and dense flow

Sommer

Ortmann

Heerden

et al. 2020

Minerals Engineering

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“…On the other hand, if the wash water removes a part of the hydrophobic particles, the recovery rate is decreased. However, the behavior of the particles in the froth is not well investigated, because applicable measurement techniques scarcely exist .…”

Section: Introductionmentioning

confidence: 99%

Tracking of Particles in Froth Using Neutron Imaging

Heitkam

Lappan

Eckert

et al. 2019

Chemie Ingenieur Technik

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The movement of hydrophobic particles in a rising froth column is investigated. Gadolinium particles are hydrophobized and floated by means of small air bubbles. The generated froth is investigated by neutron imaging. Particles are identified by correlating the resulting radiographs with an artificial template of a typical particle and subsequent scanning for local maxima. The movement of the particles in the froth was analyzed for different froth stabilities, which resulted from various concentrations of the frother sodium oleate. Decreasing froth stability leads to lower superficial vertical particle velocity and to higher horizontal diffusion of particles due to bubble rupture.

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A review of turbulence measurement techniques for flotation

Cited by 30 publications

References 81 publications

Iron Bearing Minerals Flotation from Silica Sand Using Hydroxyl Surfactants

Iron Bearing Minerals Flotation from Silica Sand Using Hydroxyl Surfactants

Application of Positron Emission Particle Tracking (PEPT) to measure the bubble-particle interaction in a turbulent and dense flow

Tracking of Particles in Froth Using Neutron Imaging

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