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Latest developments in gas purging systems for BOF and EAF

Title data

Kirschen, Marcus ; Ehrengruber, Reinhard ; Zettl, Karl-Michael:
Latest developments in gas purging systems for BOF and EAF.
In: Proceedings - METEC & 2nd ESTAD 2015, European Steel Technology and Application Days. - Düsseldorf : Stahlinstitut VDEh , 2015 . - 7 S.

Abstract in another language

Modern EAF and BOF processes are subject to the cost-optimized production of raw steel melt and highest safety standards. Excellent mixing of the molten metal by bottom gas purging helps to improve mass and heat transfer, resulting in improved metallurgical parameters as metal yield, decarburization, dephosphorization, oxidation state of slag, C x O product etc. Additional benefits of gas purging in the EAF are accelerated melting of scrap and direct reduced iron, homogeneous superheating, better alloy distribution, and lower skull formation that may delay tapping.
RHI gas purging systems for BOF and EAF consists of refractory solutions of purging plugs and the gas control station. The knowhow and control about the entire gas purging system from the gas supply to the purging plugs grants highest reliability, control and availability of the gas purging in the process at minimum service cost.
With more than 20 years of experience RHI/INTERSTOP revised the design of the gas control station thoroughly for a considerably more compact, safe and service-friendly gas valve station and modern software solutions for gas control. The new gas control units are characterized by modular design and precise and fast gas flow control over a large range of flow rates, pressures and exchange of gases. Customer-specific solutions emerged as standard. 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 technology for BOF and EAF processes to improve metallurgy and energy efficiency with minimum pay-back period.

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: 25 Jun 2019 09:19
Last Modified: 25 Jun 2019 09:19
URI: https://eref.uni-bayreuth.de/id/eprint/49689