基于特征优选的TPA-GRU的烧结矿FeO含量预测模型
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冯伟(1985—),男,高级工程师,博士研究生,从事高炉炼铁、烧结球团生产技术方面的工作。

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TF046.4;TF325.1

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陕西省创新能力支撑计划资助项目(2023-CX-TD-53);渭南市秦创原“科学家+工程师”队伍建设项目(Z20250053);中央引导地方科技发展资金资助项目(24ZYQB003)


FeO content prediction model of sinter based on TPAGRU with feature optimization
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    摘要:

    针对采用化学分析法检测烧结矿中FeO含量存在滞后性、难以实时反映烧结过程状态,以及现有预测模型仅关注特定工况下的强相关性参数、难以适应参数相关性的动态变化,导致模型泛化能力与预测精度不足的问题,本文提出一种融合时序注意力机制(TPA)的门控循环单元(GRU)网络预测模型。首先,对工业现场采集的烧结生产数据进行预处理,包括异常值检测、异常值与缺失值处理以及数据标准化等步骤,以保证数据质量与模型训练的稳定性;其次,利用注意力机制对各输入特征参数进行权重分配,实现关键特征的自动筛选;最后,将筛选后的特征值输入GRU网络进行训练,构建烧结矿FeO含量预测模型。以某烧结厂2024年全年实际生产数据为研究对象,通过试验验证该模型的预测效果,并与其他神经网络模型进行对比。结果表明,模型评价指标R2达到0.923 1,均方根误差(RMSE)为0.179 1,平均绝对误差(MAE)为0.203 5,表现出较强的泛化能力与预测精度。该研究可为烧结生产中的配料优化与工艺调控提供实时决策依据,对稳定烧结矿质量具有重要的工程应用价值。

    Abstract:

    Aiming at the hysteresis of FeO content in sinter detected by chemical analysis,which is difficult to reflect the sintering process state in real time,and the existing prediction models only focus on strong correlation parameters under specific working conditions,and it is difficult to adapt to the dynamic changes of parameter correlation,resulting in insufficient generalization ability and prediction accuracy of the model,a gated recurrent unit (GRU) network prediction model fused with temporal attention mechanism (TPA) is proposed. Firstly,the sintering production data collected at the industrial site is preprocessed,including outlier detection,outlier and missing value processing,and data standardization to ensure data quality and model training stability. Secondly,the attention mechanism is used to allocate the weight of each input feature parameter to realize the automatic screening of key features. Finally,the screened eigenvalues are input into the GRU network for training,and a prediction model of FeO content in sinter is constructed. Taking the actual production data of a sintering plant in 2024 as the research object,the prediction effect of the model is verified through experiments and compared with other neural network models. The results show that the model evaluation index R2 reaches 0. 923 1,the root mean square error (RMSE) is 0. 179 1,and the mean absolute error (MAE) is 0. 203 5,showing strong generalization ability and prediction accuracy. This study can provide a real-time decision-making basis for batching optimization and process regulation in sintering production with important engineering application value for stabilizing the quality of sinter

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冯伟,李斌,李天丁,康学军,陈皓轩,蔺旭辉,邢相栋.基于特征优选的TPA-GRU的烧结矿FeO含量预测模型[J].烧结球团,2026,(2):54-62

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  • 最后修改日期:2025-09-30
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  • 在线发布日期: 2026-07-21
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