NDLI: Bubble size as a function of some situational variables in mechanical flotation machines

Content Provider	Springer Nature Link
Author	Zhang, Wei Nesset, Jan E. Finch, James A.
Copyright Year	2014
Abstract	The specific results of the work investigating the effect of gas density and water temperature on bubble size were present. These were surrogate variables designed to investigate the effect of viscosity (varying water temperature) and altitude (varying gas density). The results show that there is a measurable but relatively small effect of gas density on bubble size. The D $_{32}$ is revealed to increase proportionally as (ρ $_{0}$/ρ $_{g}$)$^{0.132}$. The projected impact on flotation kinetics at 4500 m versus sea level is small, of the order of 0.5% recovery loss for a bank of eight flotation cells. The effect of water temperature (4–40 °C) on bubble size is more significant than gas density. The relationship correlates with water viscosity values quite closely. A finding that D $_{32}$ increases proportionally as (µ/µ$_{20}$)$^{0.776}$ highlights the importance of accounting for viscosity effects if, for example, large process temperature fluctuations or deviation from design/test conditions are expected.
Starting Page	720
Ending Page	727
Page Count	8
File Format	PDF
ISSN	20952899
Journal	Journal of Central South University of Technology
Volume Number	21
Issue Number	2
e-ISSN	22275223
Language	English
Publisher	Central South University
Publisher Date	2014-02-21
Publisher Place	Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	flotation frother bubble size viscosity altitude Engineering Metallic Materials
Content Type	Text
Resource Type	Article
Subject	Metals and Alloys Engineering

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