Fuels and Combustion
Anthracite can be used for

Blending with highly coking coal to check its swelling which helps in saving coke even walls from damage and to produce high strength coke
All of these
Making carbon electrodes
Recarbonising steel

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Fuels and Combustion
The main drawback of supplying more excess air in the combustion of fuel is the

Enhanced sensible heat loss in the flue gas
Intermittant and uncontrolled combustion of the fuel
High exit flue gas temperature from the furnace
Excessive power requirement of air blower

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