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Chemical energy and bottom stirring systems : Cost effective solutions for a better performing EAF

Title data

Badr, Karim ; Kirschen, Marcus ; Cappel, Jürgen:
Chemical energy and bottom stirring systems : Cost effective solutions for a better performing EAF.
In: Proceedings - METEC InSteelCon 2011. - Düsseldorf : Stahlinstitut VDEh , 2011 . - 8 S.

Abstract in another language

The continuous improvement of EAF performance is crucial for the increase of productivity and cost effectiveness and to render an environmental friendly process. RHI supports these targets by providing a diverse range of refractory and process solutions. Chemical energy in practical operation by injection of gaseous media like oxygen and natural gas, and solid materials like carbon became today state of the art solutions for process improvement. To understand the corresponding benefits, RHI has developed a mass and energy balance model. The objective of the model is to focus on the replacement ratio of electrical by chemical energy. The influence of such replacement on the CO2 emissions and the cost profile of EAF is also presented in the paper. Another valuable solution to decrease the energy consumption and the CO2 generation of the process is bottom purging in EAF. This technology can be introduced by the use of the directional porosity plug (DPP). The benefit of stirring in the furnace is that it enhances the interface reactions between the slag and the bath and homogenizes the liquid volume in the furnace. This results in achieving better operation parameters in terms of less power consumption and power-on time. Again a benefit in cost and a reduction in carbon dioxide emissions can obviously be attained.

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 11:20
Last Modified: 18 Jun 2019 11:20
URI: https://eref.uni-bayreuth.de/id/eprint/49559