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Erschienen in:
2021 | OriginalPaper | Buchkapitel
Influence of Natural Convection Caused by Slag Density Difference on Temperature and Solidification of Molten Slag
verfasst von : Chunming Zhang, Nan Wang, Min Chen
Erschienen in: Materials Processing Fundamentals 2021
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Abstract
The temperature and heat loss of molten slag during transportation has guiding significance for molten slag heating and heat preservation. In the present work, the effects of the thickness of a solidified slag layer and heat-dissipating caused by natural convection were numerically simulated. The results showed that the temperature of molten slag decreased and the slag density increased near the pot wall. Slag with higher density flowed down the pot wall and the slag with lower density flowed up to the slag surface, respectively. Circulation was formed between the pot wall and the center, which caused the higher temperature by ~200 K in the middle part of pot wall than the bottom. The maximum thickness of the slag layer ~28 mm appeared at the bottom, much higher than the thicknesses of 16.6 mm on the side. The slag upper surface is the main path of the energy dissipation and accounts for 81% of the total.