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Latest Developments in Gas Purging Systems for EAF

Title data

Kirschen, Marcus ; Ehrengruber, Reinhard ; Hanna, Ashraf ; Zettl, Karl-Michael:
Latest Developments in Gas Purging Systems for EAF.
In: AISTech 2015 & ICSTI : proceedings of the Iron & Steel Technology Conference. Volume 2. - Warrendale, Pa. : Association for Iron & Steel Technology , 2015 . - pp. 1974-1983
ISBN 978-1-935117-47-6

Abstract in another language

Modern EAF processes are subject to the cost-optimized production of raw steel melt in combination with very flexible productivity. Excellent mixing of the steel melt helps to improve mass and heat transfer, in order to accelerate the melting of scrap and direct reduced iron (DRI), decarburization, homogeneous superheating, alloy distribution, and to avoid skull formation. Direct bottom gas purging not only promotes efficiently mixing of the steel melt in the entire steel bath but also provides constant gas bubble columns to avoid CO boiling retardation. Since few years EAF gas purging systems are experiencing a comeback as state-of-the-art EAF technology world-wide. Recent case studies and new developments on refractory and gas control units are presented. It is shown that gas purging systems represent a safe and modern EAF technology to increase energy efficiency with minimum pay-back period.
Control on the entire gas purging technology from refractory to valve control and purging strategy is crucial for high reliability and availability of the purging system. With years of purging experience, RHI/INTERSTOP presents an entirely revised gas control system for application at the EAF, BOF, ladles etc in secondary metallurgy.

Further data

Item Type: Article in a book
Refereed: Yes
Keywords: EAF; Gas Purging; Resource Efficiency; Process Improvements; Cost Savings
Institutions of the University: Faculties > Faculty of Engineering Science
Research Institutions > Affiliated Institutes > Fraunhofer Center for High Temperature Materials and Design (HTL)
Result of work at the UBT: No
DDC Subjects: 600 Technology, medicine, applied sciences > 620 Engineering
Date Deposited: 19 Jun 2019 11:15
Last Modified: 19 Jun 2019 11:15
URI: https://eref.uni-bayreuth.de/id/eprint/49570