CHROMIUM REDUCTION FROM HIGH CHROMIUM SLAG WITH REDUCING AGENTS OF C AND SI IN AN ATMOSPHERIC INDUCTION MELTING FURNACE USING AN OXYGEN/FUEL BURNER

1 KURKA Vladislav
Co-authors:
2 JONŠTA Petr 2 CARBOL Zdeněk 3 MACHOVČÁK Pavel
Institutions:
1 MATERIAL AND METALLURGICAL RESEARCH s.r.o., Pohraniční 693/31, 703 00 Ostrava-Vítkovice, Czech Republic, EU, vladislav.kurka@mmvyzkum.cz
2 VÍTKOVICE HEAVY MACHINERY a.s., Ruská 2887/101, 703 00 Ostrava-Vítkovice Czech Republic, EU, petr.jonsta@vitkovice.cz
3 ArcelorMittal Engineering Products Ostrava s.r.o., Vratimovská 689, 707 02 Ostrava-Kunčice, Czech Republic, EU, pavel.machovcak@arcelormittal.com
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:
84-90
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:
135 views / 66 downloads
Abstract

The presented work presents the proposal, accomplishment and consequent evaluation of experiments based on the theoretical calculation and its comparison to the actually achieved level of chromium reduction from slag. The aim is reduction of chromium from slag with a high content of Cr2O3 with reducing agents of carbon in the form of anthracite and silicon in the form of ferroalloy FeSi. Experimental meltings in an atmospheric induction melting furnace were performed with an oxygen/fuel burner which was designed and produced for these experiments. Medium element contents in the melt during reduction were 16 % of Cr, 5 % of Ni and 1 % of Mo. The technology for chromium reduction from the slag was designed and experimentally performed with the aim of its transferability to the large metallurgical aggregate of intensified electric arc furnace.

Keywords: Stainless steel, slag, chromium, carbon, silicon.

© 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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