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Open AccessFeature PaperArticle

Principal Component Analysis of Blast Furnace Drainage Patterns

Thermal and Flow Engineering Lab, Åbo Akademi University, 20500 Turku, Finland
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Processes 2019, 7(8), 519; https://doi.org/10.3390/pr7080519
Received: 4 July 2019 / Revised: 2 August 2019 / Accepted: 5 August 2019 / Published: 7 August 2019
(This article belongs to the Special Issue Process Modeling in Pyrometallurgical Engineering)
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Abstract

Monitoring and control of the blast furnace hearth is critical to achieve the required production levels and adequate process operation, as well as to extend the campaign length. Because of the complexity of the draining, the outflows of iron and slag may progress in different ways during tapping in large blast furnaces. To categorize the hearth draining behavior, principal component analysis (PCA) was applied to two extensive sets of process data from an operating blast furnace with three tapholes in order to develop an interpretation of the outflow patterns. Representing the complex outflow patterns in low dimensions made it possible to study and illustrate the time evolution of the drainage, as well as to detect similarities and differences in the performance of the tapholes. The model was used to explain the observations of other variables and factors that are known to be affected by, or affect, the state of the hearth, such as stoppages, liquid levels, and tap duration. View Full-Text
Keywords: hearth; drainage; PCA; analysis tool; pattern; tapholes hearth; drainage; PCA; analysis tool; pattern; tapholes
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Roche, M.; Helle, M.; Saxén, H. Principal Component Analysis of Blast Furnace Drainage Patterns. Processes 2019, 7, 519.

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