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首页> 外文期刊>ISIJ international >A mathematical model to study liquid inclusion behavior at the steel-slag interface
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A mathematical model to study liquid inclusion behavior at the steel-slag interface

机译：研究钢渣界面液体夹杂行为的数学模型

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摘要

The separation of non-metallic inclusions at the interface between the steel and the slag in the ladle, tundish and mold is an essential part of the production of clean steel. It is therefore, of great importance to have a deep understanding of the phenomena controlling the transfer of inclusions from the steel to the slag layer. In this work a mathematical model, derived from the equation of particle motion, have been used to study the transfer of liquid inclusions to slags. The effects of the drag, added mass, buoyancy and rebound force on the inclusion transfer are considered. The model relies, to a great extent, on the availability of accurate information of the magnitude of a number of physical properties of the involved phases. Among those properties, the interfacial tension between the phases and the slag viscosity were found to be the most critical. Due to the fact that the availability of experimentally obtained high-temperature physical property data, relevant to the industrial conditions, is scarce in the literature several different model descriptions have been used in this work to estimate these properties. The mathematical model has been used to investigate the separation of liquid non-metallic inclusions, of different size and composition, to a number of different industrial ladle slag compositions.
机译：钢水和钢包，中间包和铸模中钢渣之间的界面处的非金属夹杂物的分离是清洁钢生产的重要部分。因此，对控制夹杂物从钢到炉渣层的转移现象的深刻理解至关重要。在这项工作中，从颗粒运动方程式导出的数学模型已用于研究液体夹杂物向炉渣的转移。考虑了阻力，附加质量，浮力和回弹力对夹杂物转移的影响。该模型在很大程度上取决于所涉及相的许多物理性质的大小的准确信息的可用性。在这些性质中，发现相之间的界面张力和炉渣粘度是最关键的。由于缺乏与工业条件相关的实验获得的高温物理性能数据的事实，文献中很少使用几种不同的模型描述来估算这些性能。数学模型已用于研究将不同大小和组成的液态非金属夹杂物分离为许多不同的工业钢包渣成分。

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