Physical model studies on slag foaming

Ghag, Surinder S., Hayes, Peter C. and Lee, Hae-Geon (1998) Physical model studies on slag foaming. ISIJ International, 38 11: 1201-1207. doi:10.2355/isijinternational.38.1201


Author Ghag, Surinder S.
Hayes, Peter C.
Lee, Hae-Geon
Title Physical model studies on slag foaming
Journal name ISIJ International   Check publisher's open access policy
ISSN 0915-1559
1347-5460
Publication date 1998-01-01
Sub-type Article (original research)
DOI 10.2355/isijinternational.38.1201
Open Access Status DOI
Volume 38
Issue 11
Start page 1201
End page 1207
Total pages 7
Place of publication Tokyo, Japan
Publisher Nippon Tekko Kyokai
Language eng
Abstract A physical modelling investigation has been undertaken to determine the relationship between the physico-chemical properties of the liquid phase, the gas bubble size, the gas flux, and the residence times of gas in spherical foams. The testwork was conducted in a 107 mm diameter glass column in a temperature controlled environment. The foams were generated by the injection of compressed air into solutions of distilled water and glycerol. Water glycerol solutions were used to obtain a wide range of liquid viscosities. The strongly adsorbing surfactant, sodium dodecylbenzene sulphonate, was added to the water–glycerol solutions so that the surface tensions of the solutions could also be controlled. The experimental results show that the residence times of gas bubbles in the foam increase with increasing liquid viscosity and increasing surface tension depression, and with decreasing gas bubble size. Furthermore, a transition from a foaming to a non-foaming regime was observed as the mean gas bubble diameter increased above 5 mm.
Keyword slag
foaming
cold modelling
Surface Elasticity
Wet Foams
Stability
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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