Abstract

An XRF method for determining sulphur content in coal via iron fluorescence measurement has been investigated. Factors limiting accuracy have been assessed and quantified. Results for 0.2 mm-0 coal on a laboratory analyser and for 5 mm-0 coal on a commercial on-line analyser show calibration accuracies (1σ) of ±0.02% to ±030% sulphur for individual coal types. Many of the values obtained, particularly for low ash coals, are acceptable for on-line monitoring purposes.

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