Abstract
The bottom anode in the Direct Current Electric Arc Furnace (DC EAF) is critical for completing the electrical circuit necessary for sustaining the arc within the furnace. For pin-type bottom anodes, monitoring of the temperature of select pins instrumented with thermocouples is performed to track bottom wear in the EAF and inform the operator when the furnace should be removed from service. This work presents the results from a plant trial using distributed temperature monitoring of bottom anode pins in a 165-ton DC EAF over a two-month service period utilizing two optical fiber sensing techniques: fiber Bragg grating (FBG) and Rayleigh backscattering (RBS). The early detection of temperature anomalies along the length of the anode pin through distributed sensing enhances operational safety, providing a robust alternative to traditional thermocouples.
Recommended Citation
O. C. Inalegwu and R. K. Saha and Y. R. Mekala and F. Mumtaz and N. Dionise and Z. Voss and J. D. Smith and R. J. O'Malley and R. E. Gerald and J. Huang, "Advancing Temperature Monitoring of the Bottom Anode in a Direct Current Electric Arc Furnace Operations with Distributed Optical Fiber Sensors.," IEEE Transactions on Instrumentation and Measurement, Institute of Electrical and Electronics Engineers, Jan 2025.
The definitive version is available at https://doi.org/10.1109/TIM.2025.3583377
Department(s)
Electrical and Computer Engineering
Second Department
Materials Science and Engineering
Publication Status
Early Access
Keywords and Phrases
distributed sensing; electric arc furnace (EAF); Fiber Bragg grating (FBG); optical fiber sensor; Rayleigh backscattering (RBS); thermal mapping
International Standard Serial Number (ISSN)
1557-9662; 0018-9456
Document Type
Article - Journal
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2025 Institute of Electrical and Electronics Engineers, All rights reserved.
Publication Date
01 Jan 2025
