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The Benefits of Refractory Solutions on the Energy Efficiency of Steelmaking Processes

Title data

Kirschen, Marcus ; Höck, Matthias ; Rotsch, Jens ; Drescher, Andreas:
The Benefits of Refractory Solutions on the Energy Efficiency of Steelmaking Processes.
In: Proceedings - METEC InSteelCon 2011. - Düsseldorf : Stahlinstitut VDEh , 2011 . - 9 S.

Abstract in another language

Against the background of rising energy prices and increasing costs for CO2 emission allowances in Europe, increasing energy efficiency and decreasing CO2 emissions have become more and more important. RHI supports these targets by providing a diverse range of solutions including high quality refractory linings, optimum lining maintenance, and process improvements. In this paper the contributions of intelligent refractory solutions to increase energy efficiency and decrease CO2 emissions during steelmaking are demonstrated with multiple examples.
Bottom gas purging systems in EAFs and BOFs incorporate refractory products that enhance both bath agitation and metallurgical reactions. This results in improved operating parameters including power consumption, process time, arc stability, and an increased decarburization reaction rate. Multiple benefits relating to energy and mass conversion efficiency, cost, and CO2 emissions can be clearly realized.
CFD optimized tapping systems for BOFs and EAFs are another example of refractory solutions that improve energy management. As a result of the tapping time reduction achieved with these innovative systems, savings in energy losses and increased productivity are achieved.
Another effective means to realize energy savings is through the optimization of ladle linings and the use of refractory lined cover lids. Such improvements reduce thermal losses enabling the tapping temperature at the BOF or EAF to be reduced, as well as the energy input at the ladle furnace or by chemical heating to be decreased. Recently, a novel tundish wear lining system was developed by RHI (i.e., self-hardening mixes). Since the drying stage required for other tundish lining practices is eliminated so are the associated CO2 emissions. In this paper various refractory products will be reviewed and the application benefits in terms of the energy and CO2 emission savings will be highlighted.

Further data

Item Type: Article in a book
Refereed: Yes
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: 18 Jun 2019 11:14
Last Modified: 18 Jun 2019 11:15
URI: https://eref.uni-bayreuth.de/id/eprint/49558