Trace elements emission in iron ore sintering: a review

Lucas Ladiera Lau, Vladimir Strezov, Manoel Vitor Borel Gonçalves, Mauricio Covcevich Bagatini

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Abstract

Iron ore sintering is the main process of fines agglomeration for ironmaking with relevant particulate matter and trace element emissions of integrated steel plants. Due to the high environmental and human health impacts caused by trace elements, legislations are becoming more stringent for regulating emissions of the trace elements. This review consolidates several studies in the sector, focusing on the sources, behavior, and technologies employed to control emissions of trace elements during iron ore sintering. The emission of trace elements is strongly dependent on the characteristics of raw materials, operating parameters and technologies used for their abatement. Iron ore is the main responsible material for emissions of trace elements during sintering as it undergoes a series of physicochemical transformations throughout the process. In general, trace elements may remain in the solid-state, volatilize during combustion and recondense in the cleaning system, or remaining in the gaseous state during the flue gas treatment. Although most trace elements are retained in air pollution control devices in the form of particulates, volatile and semi-volatile elements (As, Se, Hg, Cd, etc) can remain as gases or concentrate in the finer particulates. Modern technologies have demonstrated high efficiency in removing these elements from the flue gases.
Original languageEnglish
Article number100123
Pages (from-to)1-13
Number of pages13
JournalEnvironmental Advances
Volume6
DOIs
Publication statusPublished - Dec 2021

Bibliographical note

Copyright the Author(s) 2021 Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.

Keywords

  • Trace elements
  • Air pollution control devices
  • Atmospheric emissions
  • Heavy metals

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