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Hyperfine Interactions

, Volume 218, Issue 1–3, pp 29–34 | Cite as

The effect of sulphide and moisture content on steel corrosion during transport of fine wet coal

  • F. B. WaandersEmail author
  • S. W. Vorster
Article

Abstract

In the present investigation the influence of compaction pressure (stress) on the corrosivity of wet coal was investigated. Two coal samples, one high in sulphur content (3 %) and the other low in sulphur content (0.6 %) were used to determine the influence of compaction stress on the corrosion rates of steel samples in contact with compacted coal. It was found that the pressure exerted on finely divided wet coal is an important factor in determining its water content and corrosivity towards mild steel. Corrosion of the steel was typically in the form of pitting and the sulphur content of the coal was an important factor in determining the corrosivity of the coal. The corrosion rate of the high sulphur content coal was higher than that of the low sulphur coal. Mössbauer spectroscopy showed that a FeS species developed on the steel surface.

Keywords

Wet coal Corrosion Compaction 

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Copyright information

© Springer Science+Business Media Dordrecht 2012

Authors and Affiliations

  1. 1.School of Chemical and Minerals EngineeringNorth-West UniversityPotchefstroomSouth Africa

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