INFLUENCE OF STEEL FILTRATION ON REDUCTION OF CLOGGING OF IMMERSED NOZZLES IN CONTINUOUS STEEL CASTING INSTALLATIONS

1 JANISZEWSKI Krystian
Institution:
1 Silesian University of Technology, Institute of Metals Technology, Katowice, Poland, EU Krystian.Janiszewski@polsl.pl
Conference:
25th Anniversary International Conference on Metallurgy and Materials, Hotel Voronez I, Brno, Czech Republic, EU, May 25th - 27th 2016
Proceedings:
Proceedings 25th Anniversary International Conference on Metallurgy and Materials
Pages:
167-172
ISBN:
978-80-87294-67-3
ISSN:
2694-9296
Published:
14th December 2016
Proceedings of the conference were published in Web of Science and Scopus.
Metrics:
114 views / 53 downloads
Abstract

Despite the development of steel making technologies a significant portion of deoxygenation reactions products remain in the molten metal until the time of casting. These ration products are referred to as non-metallic inclusions and their dimensions lower than 30 μm. Years of research, both in laboratory and in industrial environment, showed that these type of inclusions can be removed using multi-holed ceramic filters. Additionally, filters can, when used in continuous steel casting installations, reduce the risk of clogging of tundish nozzles. Clogging is frequent problem during casting of steel deoxidized with aluminium. In this situation the outlet may act like ceramic filter when non-metallic inclusions are deposited on its edge. In effect, this results in the need for early termination of the casting process. The internal diameter of nozzles is from 3 to 4.5 10-2 m (for the experiments presented in this publication). The problem with this issue was raised by other researchers [1, 2]. Paper presents the results of studies on this phenomenon.

Keywords: Steel, tundish, ceramic filter, continuous casting, nozzle

© This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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