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Research Letters in Materials Science
Volume 2008 (2008), Article ID 751630, 4 pages
http://dx.doi.org/10.1155/2008/751630
Research Letter

Carbon Tubular Morphologies in Blast Furnace Coke

Laboratory of Process Metallurgy, Department of Process and Environmental Engineering, Faculty of Technology, University of Oulu, P.O. Box 4300, 90014 Oulu, Finland

Received 5 December 2007; Accepted 9 April 2008

Academic Editor: Jeffrey Glass

Copyright © 2008 Stanislav S. Gornostayev and Jouko J. Härkki. 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.

Abstract

The paper reports on the first occurrence of microscale carbon tubular morphologies (CMTs) in a blast furnace (BF) coke. The CMTs were probably formed as a result of the conversion of solid disordered carbon via liquid phase metal particles involving a gas phase containing a substantial amount of N 2 and O 2 . The presence of CMTs may lie behind the generation of the smallest fraction of fines in BF exhaust dust. If the amount of CMTs present in the BF exhausts gases at any particular metallurgical site proves to be substantial, it could become a subject of environmental concern.