CSN looks on the very low range of the scale. To me this suggests that the coal is not high quality as first thought.
Whereas AKM is on the very high end of the scale.
Is this correct?
"Crucible swelling number (CSN) ? The range of CSN in coking coals is 3 minimum to 6 maximum. Prime coking coals have higher CSN while soft coking coals have low CSN"
coal quality
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