Fuels and Combustion
Fossil fuels mean

Those fuels which are found in the crust of earth
Solid fuels
Premature fuels with low calorific value
Liquid fuels

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Fuels and Combustion
Beehive coke oven

Produces coke with very poor strength
Takes 2-3 days for coking of coal but requires no external fuel for heating
Facilitates by-products recovery
Gives larger yield of coke (around 85%) as compared to by-product ovens

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