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首页> 外文期刊>Scandinavian Journal of Metallurgy >Dynamic model of liquid levels in the blast furnace hearth
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Dynamic model of liquid levels in the blast furnace hearth

机译：高炉炉膛内液位的动态模型

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A mathematical model has been developed to provide realtime information about the important stages of the tapping operation of the ironmaking blast furnace (BF). The model tracks the levels of molten iron and slag inside the hearth based on a continuous analysis of produced and tapped liquid quantities, further considering the internal state of the hearth, including its geometry and the state of the coke bed. Because of inaccuracies in the model and in the measurements from the process, an optimal filtering method, the extended Kalman filter, is applied to provide reasonable liquid level estimates. For real-time predictions, the model additionally utilizes measurements of the electromotive force (emf) between two electrodes attached to the furnace shell, and predicts the occurrence of important events in the tap cycle, such as the duration of the present tap. The model has been found to provide valuable information about the crucial steps in the tap cycle.
机译：已经开发了数学模型以提供有关炼铁高炉（BF）出钢操作重要阶段的实时信息。该模型基于对产生和排出的液体量的连续分析，进一步考虑炉膛的内部状态（包括炉膛的几何形状和焦炭床的状态），来跟踪炉膛内的铁水和炉渣水平。由于模型和过程中的测量结果不准确，因此采用了一种最佳的滤波方法（扩展的卡尔曼滤波器）来提供合理的液位估算值。对于实时预测，该模型还利用对附着在炉壳上的两个电极之间的电动势（emf）进行测量，并预测抽头循环中重要事件的发生，例如当前抽头的持续时间。已经发现该模型可以提供有关抽头循环关键步骤的有价值的信息。

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