The prediction of gas residence times in foaming CaO-SiO2-FeO slags
SCIE
SCOPUS
- Title
- The prediction of gas residence times in foaming CaO-SiO2-FeO slags
- Authors
- Ghag, SS; Hayes, PC; Lee, HG
- Date Issued
- 1998-01
- Publisher
- IRON STEEL INST JAPAN KEIDANREN KAIKA
- Abstract
- A dynamic, non-equilibrium model of foaming: Sigma=1x10(6)(mu.E-eff/(rho g)(2)d(3)) which relates the residence times of gas bubbles in foams (Sigma) to the viscosity of the liquid phase (mu); the effective elasticity (E-eff) resulting from the dynamic adsorption of surface active species; the liquid phase density (rho); and the mean bubble diameter (d); has been applied to foaming in the CaO-SiO2-FeO system at 1 823 K. In agreement with industrial observations, the model shows a transition from a foaming regime to a non-foaming regime as the slag basicity increase above 1.5. This is due to poor surface elasticity resulting from the negligible adsorption of silica in this region.
- Keywords
- slag; foaming; physical modelling; SURFACE; MODEL; REDUCTION; TENSIONS; SYSTEMS
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/21115
- DOI
- 10.2355/isijinternational.38.1216
- ISSN
- 0915-1559
- Article Type
- Article
- Citation
- ISIJ INTERNATIONAL, vol. 38, no. 11, page. 1216 - 1224, 1998-01
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- There are no files associated with this item.
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