Enhanced graphite recovery by optimising flotation energy input

This experimental work on graphite flotation investigated the effect of energy input on flotation performance of three particle size fractions. Results obtained from flotation tests indicated that the required energy input rate increases with the decreasing particle size. The maximum graphite recove...

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Bibliographic Details
Published in:Separation science and technology 2019-03, Vol.54 (5), p.766-774
Main Authors: Lai, Qingteng, Liao, Yinfei, An, Maoyan, Liu, Zechen, Qiu, Yuliang, Ma, Longfei
Format: Article
Language:English
Subjects:
Energy
energy input
Energy recovery
Flotation
Graphite
low-grade ore
Numerical analysis
Optimization
Particle size
Recovery
Streamlines
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Summary:This experimental work on graphite flotation investigated the effect of energy input on flotation performance of three particle size fractions. Results obtained from flotation tests indicated that the required energy input rate increases with the decreasing particle size. The maximum graphite recovery of coarse particles was obtained at 121 J/min, while the optimum recovery of fine particles was obtained at 330 J/min. However, the demand of energy for each coarse particle is slightly higher than that of the fine particle in collision process. Numerical analysis showed that the streamlines have little effect on the trajectories of coarse particles, which can significantly contribute to a higher recovery of coarse particles in comparison with fine particles at the same energy input rate.
ISSN:0149-6395
1520-5754
DOI:10.1080/01496395.2018.1518333