Fuels and Combustion
Lignite is

A coking coal
A black banded coal which burns with a non-smoky yellowish flame
A high rank coal
Can be used for gasification and steam generation

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Fuels and Combustion
Low temperature carbonisation

Is meant for the production of 'metallurgical coke'
Produces less quantity of tar than high temperature carbonisation
Produces higher quantity of gas than high temperature carbonisation
Is mainly for producing the smokeless domestic coke

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