a coal that burns with blue and intense flame
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Answer:
The blue is from the coal gas, mostly methane, bruning off and the yellow is longer chain carbon burning off like you see in a wood fire. I even had a half ton of caol that burned witha red flame.
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Explanation:
With complete combustion, methane burns with a blue flame color (natural gas blue flame) and burns at a temperature of around 1,960°C. Natural gas flame color orange indicates incomplete combustion
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