Fuels and Combustion
Combustion of pulverised coal as compared to that of lump coal

Develops a non-luminous flame
Provides a lower rate of heat release
Develops a low temperature flame
Can be done with less excess air

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Fuels and Combustion
Fussain

Is non-coking, but when blended with highly coking coal, controls its swelling and produces high strength coke on carbonisation
Is friable, charcoal like substance
Has highest fixed carbon and lowest volatile matter content of all the four banded components of coal
All of these

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