Particle suspension and mixing characteristics in a solid-liquid stirred tank with high solid content

ZHAO Hong-liang; YIN Pan; ZHANG Li-feng

doi:10.13374/j.issn2095-9389.2017.01.007

Volume 39 Issue 1

Jan. 2017

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ZHAO Hong-liang, YIN Pan, ZHANG Li-feng. Particle suspension and mixing characteristics in a solid-liquid stirred tank with high solid content[J]. Chinese Journal of Engineering, 2017, 39(1): 54-60. doi: 10.13374/j.issn2095-9389.2017.01.007

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ZHAO Hong-liang, YIN Pan, ZHANG Li-feng. Particle suspension and mixing characteristics in a solid-liquid stirred tank with high solid content[J]. Chinese Journal of Engineering, 2017, 39(1): 54-60. doi: 10.13374/j.issn2095-9389.2017.01.007

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Particle suspension and mixing characteristics in a solid-liquid stirred tank with high solid content

doi: 10.13374/j.issn2095-9389.2017.01.007

1) School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China
2) Beijing Key Lab of Rare & Precious Metals Green Recycling and Extraction, Beijing 100083, China

Received Date: 2016-04-07

Abstract

Abstract

The suspension and mixing characteristics of high-content solid particles were experimentally studied in a tank stirred with an Intermig impeller.An optical fiber technology was adopted to measure the bottom and axial solid concentration under different conditions of impeller diameter,rotational speed and impeller-bottom distance,and the critical suspension speed and power consumption were also investigated at the same time.The results show that the Intermig impeller has good axial mixing performance in the solid-liquid stirred system with high solid content.High impeller diameter and low impeller-bottom distance could improve the solid suspension and uniform distribution with low power consumption.By analyzing and fitting the experimental results,the bottom solid uniformity is calculated by Froude number with the equation of Q=0.58Fr^-0.35 and the power number is calculated by Reynolds number with the equation of N_P=2.1Re^-0.2.
- stirred tank reactor,
- particles,
- mixing characteristics,
- suspension

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References(10)

References

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