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The characterisation of three different coal samples by means of various analytical techniques

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An Erratum to this article was published on 03 December 2009

Abstract

Three coal samples were investigated by means of room temperature Fe-Mössbauer analyses, high temperature X-ray diffraction measurements (HT-XRD), electron microscopy analyses (SEM) of the slag and the ash fusion temperatures (AFT) of the coal samples were determined. FactSage modelling was done for the Fe-containing species. Mössbauer analyses showed that the one Southern hemisphere coal contained pyrite (1.5%) whilst the other sample contained siderite (4%). The Northern hemisphere coal contained a large amount (27%) of pyrite. After heating the coal in air, the ash contained a glass and hematite. The SEM analyses of the slag that formed, showed that hematite was present, in agreement with high temperature X-ray diffraction work. The ash fusion temperatures, as determined with FactSage modelling and the value as determined by the standard analytical methods, were found to vary between 1,300°C and 1,470°C.

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Authors and Affiliations

  1. North-West University, Potchefstroom, 2531, South Africa

    F. B. Waanders & C. J. Prinsloo

  2. Sasol Technology, R&D Division, Syngas and Coal Technologies, P.O. Box 1, Sasolburg, 1947, South Africa

    J. C. van Dyk

Authors
  1. F. B. Waanders
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  2. J. C. van Dyk
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  3. C. J. Prinsloo
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Corresponding author

Correspondence to F. B. Waanders.

Additional information

An erratum to this article can be found at http://dx.doi.org/10.1007/s10751-009-0136-0

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Waanders, F.B., van Dyk, J.C. & Prinsloo, C.J. The characterisation of three different coal samples by means of various analytical techniques. Hyperfine Interact 190, 109–114 (2009). https://doi.org/10.1007/s10751-009-9971-2

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  • DOI: https://doi.org/10.1007/s10751-009-9971-2

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