Behavior of dioxins in the sintering process of iron ores

E. Kasai, T. Aono

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)

Abstract

The new "law concerning special measures against dioxins" is promulgated in January, 2000 in Japan and the emission control of dioxins has been enforced to the iron ore sintering plants and some other plants/processes for metals recycling. In 1997, a collaborative research project was formed by the researchers and engineers of Japanese integrated steel makers and universities, in order to investigate the behaviors of dioxins and relating substances in the sintering process of iron ores and to search for new technological principles for suppression of the emissions rather than waste gas treatments. The project has carried out the examination of previous literatures and data, several plant measurements and tests, experiments using process simulators (sinter-pots) and fundamental researches. The present paper reports a part of the results of the measurements and analyses of a sintering plant equipped with several waste gas treatment processes. Characteristics of behaviors and flows of dioxins in the sintering bed, windboxes and gas treatment processes are discussed, Further, the effect of additives to raw materials, especially chlorine-bearing materials, on the discharged amount of dioxins in exhaust gas is examined based on the results of sinter-pot tests.

Original languageEnglish
Pages (from-to)228-237
Number of pages10
JournalTetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan
Volume87
Issue number5
DOIs
Publication statusPublished - 2001 May

Keywords

  • Chlorine content
  • Dioxins
  • EP dust
  • Fingerprint
  • PCDDs
  • PCDFs
  • Plant measurement
  • Precursor
  • Sinter-pot
  • Sintering of iron ores
  • co-PCBs

ASJC Scopus subject areas

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

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