A ladle furnace (LF) refining process model is proposed considering both steel mixing and multiphase chemical reactions. In the model, the LF, together with the melts, is divided into a finite number of tanks according to the tank‐in‐series model. The tank number is determined by simulations of the model with varied tanks and compared with the empirical mixing time. The “effective equilibrium reaction zone (EERZ)” method is used to describe the kinetics of multiphase reactions. The thermodynamic library—ChemApp—is applied to link the model to thermodynamic database. Steel/slag reaction, lining dissolution, alloy addition, and air absorption are considered. Using the model, an industrial LF treatment process is simulated and the reasonability of the predicted compositions of steel, slag, and inclusions is illustrated by comparing with measurements. The inhomogeneity of the steel and inclusion concentrations in different tanks are shown.

中文翻译：

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考虑混合和化学反应的钢包精炼过程建模

提出了同时考虑钢混合和多相化学反应的钢包炉精炼工艺模型。在该模型中，根据串联罐模型，LF和熔体一起分为有限数量的罐。通过对具有不同储罐的模型进行仿真来确定储罐数量，并将其与经验混合时间进行比较。“有效平衡反应区（EERZ）”方法用于描述多相反应的动力学。热力学库ChemApp用于将模型链接到热力学数据库。考虑钢/渣反应，炉衬溶解，合金添加和空气吸收。使用该模型，模拟了工业LF处理过程，并通过与测量值的比较说明了预测的钢，炉渣和夹杂物成分的合理性。