Prediction of the optimum bubble size for inclusion removal from molten metals by flotation

Wang, Laihua, Lee, Hae-Geon and Hayes, Peter C. (1996) Prediction of the optimum bubble size for inclusion removal from molten metals by flotation. ISIJ International, 36 7-16. doi:10.2355/isijinternational.36.7


Author Wang, Laihua
Lee, Hae-Geon
Hayes, Peter C.
Title Prediction of the optimum bubble size for inclusion removal from molten metals by flotation
Journal name ISIJ International   Check publisher's open access policy
ISSN 1347-5460
0915-1559
Publication date 1996-01-01
Sub-type Article (original research)
DOI 10.2355/isijinternational.36.7
Open Access Status DOI
Volume 36
Start page 7
End page 16
Total pages 10
Place of publication Tokyo, Japan
Publisher Nippon Tekko Kyokai / Iron and Steel Institute of Japan
Abstract A mathematical model has been developed to determine the optimum bubble size for the removal of inclusions from molten metals by flotation. The probability of collision between a bubble and an inclusion, PC, and the probability of adhesion of an inclusion to a bubble by sliding, PA, are defined to describe the efficiency of inclusion attachment to a bubble. The results show that small bubbles have a high PC, while small inclusions have a high PA and low PC. By considering the overall probability, P (=PC×PA), and the floating time of the bubble, the model suggests that the optimum bubble sizes for the removal from steel of alumina inclusions less than 50 μm in size are in the range of 0.5 to 2 mm in diameter.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Chemical Engineering Publications
 
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Created: Sat, 16 Jan 2016, 00:36:38 EST by Vicki Thompson on behalf of School of Chemical Engineering