Fuels and Combustion
Height of coke oven is limited (say maximum upto 7 metres) mainly by the

Problem of uniform heating along its height
Structural strength of silica bricks
Buckling of ram of pusher car at the time of coke pushing
Problem in door cleaning

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Fuels and Combustion
Combustion of pulverised fuel

Requires larger combustion chamber than rich gaseous fuel
All of these
Suppresses the discharge of fine dust and grit into atmosphere
In a metallurgical furnace does not contaminate the product in the furnace by ash from fuel

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