Abstract
Viscosity is considered to be a significant indicator of the metallurgical property of blast furnace (BF) slag. However, a BF is a complicated black box so that the measurement of the viscosity has a large hysteresis. A prediction model for the viscosity based on machine learning, principal component analysis (PCA) and k-nearest neighbor (KNN) regression is presented in this article. First, the main influencing factors of the viscosity are analyzed and selected as the input of the model. Then, the two datasets are preprocessed by data normalization. In addition, the sample characteristics of the data are processed to be statistically irrelevant by PCA. Based on the above, the two datasets are applied to the PCA–KNN model and the support vector regression model, respectively. The results show that the predicted result using the PCA–KNN model is more accurate and reaching 99%.
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Funding
This work was supported by China Postdoctoral Science Foundation funded Project [Project No.: 2019M650490].
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Jiang, D., Zhang, J., Wang, Z. et al. A Prediction Model of Blast Furnace Slag Viscosity Based on Principal Component Analysis and K-Nearest Neighbor Regression. JOM 72, 3908–3916 (2020). https://doi.org/10.1007/s11837-020-04360-9
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DOI: https://doi.org/10.1007/s11837-020-04360-9