Determining the significance of flotation variables on froth rheology using a central composite rotatable design

Li, Chao, Farrokhpay, Saeed, Runge, Kym and Shi, Fengnian (2016) Determining the significance of flotation variables on froth rheology using a central composite rotatable design. Powder Technology, 287 216-225. doi:10.1016/j.powtec.2015.10.013


Author Li, Chao
Farrokhpay, Saeed
Runge, Kym
Shi, Fengnian
Title Determining the significance of flotation variables on froth rheology using a central composite rotatable design
Journal name Powder Technology   Check publisher's open access policy
ISSN 0032-5910
1873-328X
Publication date 2016-01-01
Year available 2016
Sub-type Article (original research)
DOI 10.1016/j.powtec.2015.10.013
Open Access Status Not Open Access
Volume 287
Start page 216
End page 225
Total pages 10
Place of publication Amsterdam, The Netherlands
Publisher Elsevier
Collection year 2017
Language eng
Formatted abstract
Froth performance in a flotation cell is expected to be affected by froth rheology due to change in the froth transportation rate. However, very little study has been performed to investigate how froth rheology responds to flotation variables. This paper presents an experimental program performed to study the effects of flotation variables (i.e. feed grade, feed particle size, froth height, superficial gas velocity and impeller speed) on the froth rheology. These conditions were varied using a central composite rotatable design (CCRD).

Froth rheology was found to change significantly with a variation in flotation conditions and exhibited shear-thinning behaviour. Assuming the froth moving towards the flotation lip is an open channel flow, the shear rate in the froth was calculated to be less than 4 s− 1. Results of the CCRD experiments showed that the flotation variables have different effects on the froth rheology. The interactions between these flotation variables in determining froth rheology were also analysed. A shear rate specific empirical model was developed to relate froth rheology to the flotation variables and their interactions
Keyword CCRD
Flotation
Froth rheology
Shear rate
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Julius Kruttschnitt Mineral Research Centre Publications
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