Reducing the entrainment of clay minerals in flotation using tap and saline water

Liu, Di and Peng, Yongjun (2014) Reducing the entrainment of clay minerals in flotation using tap and saline water. Powder Technology, 253 216-222. doi:10.1016/j.powtec.2013.11.019


Author Liu, Di
Peng, Yongjun
Title Reducing the entrainment of clay minerals in flotation using tap and saline water
Journal name Powder Technology   Check publisher's open access policy
ISSN 0032-5910
1873-328X
Publication date 2014-01-01
Year available 2013
Sub-type Article (original research)
DOI 10.1016/j.powtec.2013.11.019
Volume 253
Start page 216
End page 222
Total pages 7
Place of publication Lausanne, Switzerland
Publisher Elsevier
Language eng
Subject 1500 Chemical Engineering
Abstract High gangue entrainment is a major problem in fine particle flotation. In this study, the entrainment of kaolinite Q38 in flotation was examined in tap and saline water. High molecular weight polyethylene oxide (PEO) was used to reduce the entrainment of kaolinite Q38 by enlarging the size of kaolinite particles in flotation. It was found that PEO reduced the entrainment significantly in flotation using tap water, but in saline water, the effect of PEO was less pronounced. The aggregation behaviour of kaolinite Q38 particles in the absence and presence of PEO and its effect on the entrainment of kaolinite Q38 were studied by the in-situ measurement of flocs and the size of enlarged particles, settling tests and the measurement of froth stability in flotation. It is interesting to find that PEO did flocculate kaolinite Q38 particles and enlarge their sizes in flotation despite high agitation. However, the reduction of the entrainment of kaolinite Q38 in flotation was dependent on the type of flocs formed and froth stability which can be modified by electrolytes in water and a high addition of PEO.
Keyword Clay mineral
Entrainment
Flocs
Flotation
Froth stability
Saline water
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Available online: 22 November 2013.

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Chemical Engineering Publications
Official 2014 Collection
 
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