Chemical forms of the chlorine and carbon in dust samples formed in a sintering process of iron ores

Naoto Tsubouchi, Eiki Kasai, Yoshihiro Nakazato, Hidekazu Hayashi, Yasuo Ohtsuka

Research output: Contribution to conferencePaper

Abstract

The functionalities of the chlorine and carbon present in dust samples recovered from several windboxes of a commercial iron ore sintering plant have been studied with XRD and XPS methods. The chlorine in the dust samples exists as both KCl with the average crystalline size of 40-50 nm and covalent C-Cl bonds in condensed aromatic structures of unburned carbon. The proportion of chlorinated aromatic structures increases with increasing that of oxygen functional groups on the carbon. It is likely that HCl and/or Cl2 evolved in the sintering process react with active sites on the carbon surface to provide organic chlorides, part of which may be the sources of dioxins.

Original languageEnglish
Pages723-726
Number of pages4
Publication statusPublished - 2006 Dec 1
Event4th International Congress on the Science and Technology of Ironmaking, ICSTI 2006 - Osaka, Japan
Duration: 2006 Nov 262006 Nov 30

Other

Other4th International Congress on the Science and Technology of Ironmaking, ICSTI 2006
CountryJapan
CityOsaka
Period06/11/2606/11/30

ASJC Scopus subject areas

  • Metals and Alloys

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    Tsubouchi, N., Kasai, E., Nakazato, Y., Hayashi, H., & Ohtsuka, Y. (2006). Chemical forms of the chlorine and carbon in dust samples formed in a sintering process of iron ores. 723-726. Paper presented at 4th International Congress on the Science and Technology of Ironmaking, ICSTI 2006, Osaka, Japan.