Effect of properties of solid fuel on dioxin concentration of the exhaust gas in the iron ore sintering process

Takazo Kawaguchi, Masaru Matsumura, Eiki Kasai, Hidetoshi Noda

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

The various factors have been pointed out which affect the dioxin emissions from the iron ore sintering process. One of the significant factors is solid fuel. It has been reported that metallurgical coke, which is the major fuel, gives the higher emissions than other carbonaceous materials, e.g., anthracite, coal, activated coke and coal. In this study, the effect of solid fuel on the dioxin emissions was experimentally studied in detail by a sinter pot test. The various coke samples corrected from different steel works were examined together with other carbonaceous materials. The effects of different pre-treatments to the coke samples, e.g., crushing, water or solvent rinsing, composting with a chloride and pre-heating in nitrogen, were further examined. The results of the present study suggest that although the other substances complicatedly affect also to the formation/decomposition and transportation of dioxins in the sintering bed, the properties of solid fuel directly and indirectly affect to the emissions. For instance, increase of the mixing ratio of coke, especially finer size of particles, increases the emission; and contrary; the water rinsing and preheating of coke decrease the emissions. The effect of nitrogen contained in the solid fuel is also discussed.

Original languageEnglish
Pages (from-to)378-385
Number of pages8
JournalTetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan
Volume88
Issue number7
DOIs
Publication statusPublished - 2002 Jul

Keywords

  • Anthracite
  • Coke
  • Dioxin concentration
  • Fuel
  • Pot test
  • Sintering process

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Metals and Alloys
  • Materials Chemistry

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