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Study of low flow rate ladle bottom gas stirring using triaxial vibration signals
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Yenus, Jaefer, Brooks, Geoffrey, Dunn, Michelle, Li, Zushu and Goodwin, Tim (2017) Study of low flow rate ladle bottom gas stirring using triaxial vibration signals. Metallurgical and Materials Transactions B . doi:10.1007/s11663-017-1118-2 ISSN 1073-5615.
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Official URL: http://dx.doi.org/10.1007/s11663-017-1118-2
Abstract
Secondary steelmaking plays a great role in enhancing the quality of the final steel product. The metal quality is a function of metal bath stirring in ladles. The metal bath is often stirred by an inert gas to achieve maximum compositional and thermal uniformity throughout the melt. Ladle operators often observe the top surface phenomena, such as level of meniscus disturbance, to evaluate the status of stirring. However, this type of monitoring has significant limitations in assessing the process accurately especially at low gas flow rate bubbling. The present study investigates stirring phenomena using ladle wall triaxial vibration at a low flow rate on a steel-made laboratory model and plant scale for the case of the vacuum tank degasser. Cold model and plant data were successfully modeled by partial least-squares regression to predict the amount of stirring. In the cold model, it was found that the combined vibration signal could predict the stirring power and recirculation speed effectively in specific frequency ranges. Plant trials also revealed that there is a high structure in each data set and in the same frequency ranges at the water model. In the case of industrial data, the degree of linear relationship was strong for data taken from a single heat.
Item Type: | Journal Article | ||||||
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Subjects: | T Technology > TN Mining engineering. Metallurgy | ||||||
Divisions: | Faculty of Science, Engineering and Medicine > Engineering > WMG (Formerly the Warwick Manufacturing Group) | ||||||
Library of Congress Subject Headings (LCSH): | Steel -- Metallurgy, Steel industry and trade, Ladle metallurgy, Argon, Vibration | ||||||
Journal or Publication Title: | Metallurgical and Materials Transactions B | ||||||
Publisher: | Springer New York LLC | ||||||
ISSN: | 1073-5615 | ||||||
Official Date: | 14 November 2017 | ||||||
Dates: |
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DOI: | 10.1007/s11663-017-1118-2 | ||||||
Status: | Peer Reviewed | ||||||
Publication Status: | Published | ||||||
Access rights to Published version: | Restricted or Subscription Access | ||||||
Date of first compliant deposit: | 21 November 2017 | ||||||
Date of first compliant Open Access: | 14 November 2018 | ||||||
RIOXX Funder/Project Grant: |
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