Effect of particle size and concentration on bubble size distribution and aspect ratio in a counter-current microstructured bubble column

Prakash, Ritesh; Majumder, Subrata Kumar

doi:10.1016/j.jiec.2020.07.002

Cited by 18 publications

(2 citation statements)

References 43 publications

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“…With U L increasing, the bubbles had more uprising resistances, which dropped the bubble velocities, raised the bubble‐breaking rates, and produced smaller size bubbles. Prakash and Majumder 30 got the same results through experimental observations. They concluded that the higher rising speed would intensify the bubble merging speeds, and the bubble merging would decrease with the rising of the countercurrent water speed.…”

Section: Resultssupporting

confidence: 55%

A study of bubble size/shape evolution in microbubble countercurrent contacting flotation column

Han

Chen

2022

Asia-Pacific J Chem Eng

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Cationic collectors are widely used in the flotation of iron ore, silicate, oxides, and so forth. At this stage, so much research has been carried out on flotation column cells, but more attention needs to be paid to the hydrodynamic properties in the presence of cationic collectors in cells. In order to study foaming performance and hydrodynamic characteristics in the presence of GE609, the bubble characteristics are studied in an experimental scale flotation column. A high-speed camera recorder is used to take bubbles' images, and the bubble size and shape under different conditions is measured by image analysis. This paper aims to explore the effect of dispersed gas and continuous liquid velocities on the bubble size and aspect ratio at different axial heights in a countercurrent flotation column in the presence and absence of GE609. In the

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Section: Resultssupporting

confidence: 55%

A study of bubble size/shape evolution in microbubble countercurrent contacting flotation column

Han

Chen

2022

Asia-Pacific J Chem Eng

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“…Mowla et al measured two images under each operating condition to obtain at least 100 bubbles and calculate bubble velocity. Prakash and Majumder selected 5–10 images to obtain at least 150–250 bubbles to calculate d 32 . Besagni and Inzoli used at least two images to obtain more than 800 bubbles to analyze the bubble shape.…”

Section: Experimental Setup and Image Analysis Methodsmentioning

confidence: 99%

Bubble Morphology Analysis and Pressure Drop of Gas–Liquid Two-Phase Flow inside a Quarto Static Mixer

Yang

Meng

et al. 2022

Ind. Eng. Chem. Res.

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The upward two-phase flow in vertical static mixers is beneficial for dispersion mixing. The bubble size distribution, aspect ratio, and angle distribution of the dispersed phase at various superficial liquid/gas velocities in an industrial Quarto static mixer (QSM) are experimentally studied. The dispersion performance of the QSM is assessed by Sauter mean diameter (d 32), and the empirical correlation of axial d 32 distribution is proposed. The gas–liquid pressure drop in the QSM is measured under U L = 0–0.071 and U G = 0–0.042 m/s, and two new dimensionless empirical correlations are proposed. Based on pressure fluctuation signal time series, the standard deviation, kurtosis, and skewness are analyzed, and the inlet and outlet critical velocities of flow pattern transition from pseudo-homogeneous to heterogeneous in the QSM are identified. Finally, the effect of U G on the dominant frequency and power spectral density function is quantitatively analyzed at the inlet and outlet sections.

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Particle motion analysis of a new three-phase fluidized bed flotation column with glass sphere particles

Han,

Fang,

Yang

et al. 2023

Advanced Powder Technology

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Effect of particle size and concentration on bubble size distribution and aspect ratio in a counter-current microstructured bubble column

Cited by 18 publications

References 43 publications

A study of bubble size/shape evolution in microbubble countercurrent contacting flotation column

A study of bubble size/shape evolution in microbubble countercurrent contacting flotation column

Bubble Morphology Analysis and Pressure Drop of Gas–Liquid Two-Phase Flow inside a Quarto Static Mixer

Particle motion analysis of a new three-phase fluidized bed flotation column with glass sphere particles

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