Effects of nanobubble and hydrodynamic parameters on coarse quartz flotation

Nazari, Sabereh; Shafaei, Sied Ziaedin; Gharabaghi, Mahdi; Ahmadi, Roya; Shahbazi, Behzad; Fan, Minguang

doi:10.1016/j.ijmst.2018.08.011

Cited by 80 publications

(33 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…During the experiment, when the Nanobubbles were pumped into the flotation cell, it attached itself to the hydrophobic surface and enhanced the flotation recovery. With the presence of nanobubbles, the coarse flotation recovery increased by 21 % and an increase in the flotation rate constant up to 36% (Nazari et al, 2019).…”

Section: Effects Of Nanobubbles On Coarse Quartz Floatationmentioning

confidence: 94%

“…The nano-bubbles are mostly smaller than 1 µm and can be characterized by having high attachment ability and low probability of detachment due to its small size and low ascending velocity. They attach to the hydrophobic surface and act as secondary collectors for the particles and rapidly attach to the air bubbles (Nazari et al, 2019). These are obtained using several methods such as solvent exchange, hydrodynamic cavitation (Ebrahimi et al, 2020), ultrasonic and temperature variation (Nazari et al, 2019;.…”

Section: Nanobubbles and Micro-nanobubblesmentioning

confidence: 99%

“…They attach to the hydrophobic surface and act as secondary collectors for the particles and rapidly attach to the air bubbles (Nazari et al, 2019). These are obtained using several methods such as solvent exchange, hydrodynamic cavitation (Ebrahimi et al, 2020), ultrasonic and temperature variation (Nazari et al, 2019;. Nano-bubbles have great impacts on flotation efficiency (Nazari et al, 2019), froth flotation (Sobhy and Tao, 2019), gas holdup during flotation (Ebrahimi et al, 2020), and considerable reduction in chemical reagents consumption during flotation (frother and collector dosage) (Ebrahimi et al, 2020).…”

Section: Nanobubbles and Micro-nanobubblesmentioning

confidence: 99%

“…These are obtained using several methods such as solvent exchange, hydrodynamic cavitation (Ebrahimi et al, 2020), ultrasonic and temperature variation (Nazari et al, 2019;. Nano-bubbles have great impacts on flotation efficiency (Nazari et al, 2019), froth flotation (Sobhy and Tao, 2019), gas holdup during flotation (Ebrahimi et al, 2020), and considerable reduction in chemical reagents consumption during flotation (frother and collector dosage) (Ebrahimi et al, 2020). Micro nanobubbles are tiny bubbles with sizes ranging from 100 nm to submicron, formed in considerable amounts by hydrodynamic cavitation and due to their extraordinary properties such as long lifetime, high gas solubility, high surface stiffness, and incredibly large micro contact angle .…”

Section: Nanobubbles and Micro-nanobubblesmentioning

confidence: 99%

See 3 more Smart Citations

Dynamics of bubble-particle interaction in different flotation processes and applications - a review of recent studies

Patnaik¹,

Menon²,

Gupta³

et al. 2020

Physicochem. Probl. Miner. Process.

View full text Add to dashboard Cite

Flotation process involves aggregation of the particles based on the material/compound type of random mixtures such as ores and seawater. It is primarily used in pretreatment of water desalination and other industrial applications. The process makes use of various fluid mechanics principles as multifluids are involved. The multi-fluids in most of the flotation processes are of different phases, such as air and water. Like any other process, the efficiency of flotation is important, and hence most of the studies have been dedicated to understanding how the various parameters are affecting the flotation process. Among various parameters, fluids properties and flow parameters chiefly affect the flotation process. In particular, the bubble-particle interaction of the flotation process has been of interest as it is one of the cost-effective ways to enhance flotation efficiency. In this review, the authors present the latest developments in such parametric studies. This paper could be of interest to research students, academic researchers, and practitioners who want to contribute to (or take from) flotation research.

show abstract

Section: Effects Of Nanobubbles On Coarse Quartz Floatationmentioning

confidence: 94%

Section: Nanobubbles and Micro-nanobubblesmentioning

confidence: 99%

Section: Nanobubbles and Micro-nanobubblesmentioning

confidence: 99%

Section: Nanobubbles and Micro-nanobubblesmentioning

confidence: 99%

See 2 more Smart Citations

Dynamics of bubble-particle interaction in different flotation processes and applications - a review of recent studies

Patnaik¹,

Menon²,

Gupta³

et al. 2020

Physicochem. Probl. Miner. Process.

View full text Add to dashboard Cite

show abstract

“…The application of HC in flotation has been reported in recent years. Some researchers have used HC as a pulp pretreatment method before flotation [8][9][10][11][12][13]. Other studies have used HC in flotation separation processes; the tests are usually carried out in flotation columns [14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Effect of Hydrodynamic Cavitation Assistance on Different Stages of Coal Flotation

2020

View full text Add to dashboard Cite

In this study, the effect of hydrodynamic cavitation (HC) on the conditioning stage (HCCS), separation stage (HCSS), and whole stage (HCWS) of coal flotation was investigated by flotation tests, laser granulometry, and contact angle measurements. The flotation results indicate that compared to conventional flotation, all HC-assisted flotation methods can improve concentrate combustible recovery and flotation constant rate. HCCS and HCSS show similar levels of improvement, while HCWS has a better flotation efficiency. The screening tests demonstrate that HC has the advantage of being able to liberate coarse coal particles (+0.25 mm) prior to being combined with gangues. On one hand, HC promotes the dispersion of both particles and agents, while longer cavitation time in HCCS does not lead to better flotation performance. On the other hand, enhancement of the adsorption of the collector on the surface of coal particles in HCCS is confirmed by flotation concentrate contact angle tests. However, HCSS leads to a decrease in concentrate hydrophobicity, compared to conventional flotation. The micro-nanobubbles generated by HC play an important role in improving flotation performance. HCWS offers the advantages of both HCCS and HCSS, and the cooperated mechanism of different HC modes enhances the recovery of coal particles in flotation.

show abstract