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Modeling of Slag Entrainment and Interfacial Mass Transfer in Gas Stirred Ladles

机译:气体搅拌钢包中夹渣和界面传质的建模

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摘要

In gas stirred steelmaking ladles, entrainment of liquid slag into liquid steel and vice versa takes place. Qualitatively, slag entrainment is known to increase slag-metal interfacial reaction rates. However, it is unknown how the entrainment is quantitatively affected by gas stirring rate and the properties of the slag and metal. In this paper the modelling of slag entrainment is resolved into several sub-models to determine the interfacial reaction rates between slag and metal for the droplets and other interfaces. The model predictions are in line with literature values for refining rates and also rationalize the effects of ladle size and number of gas injection plugs.
机译:在气体搅拌炼钢钢包中,液态渣被夹带到液态钢中,反之亦然。定性地,已知夹渣会增加渣-金属界面反应速率。然而,尚不清楚夹杂物如何受到气体搅拌速率以及炉渣和金属性质的定量影响。在本文中,将渣的夹带模型分解为几个子模型,以确定渣和金属之间的液滴和其他界面的界面反应速率。该模型的预测与精炼率的文献数据相符,并且也将钢包尺寸和注气塞数量的影响合理化。

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