Question

difference between lignite and bituminous coal
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Answer 1

Explanation:

Lignite is easier to ignite while bituminous coal is easier to burn out. Effect of temperature higher than 700 °C on coking characteristics is small. Lignite LW tends to slag due to its mineral content forming amorphous eutectics.

Answer 2

Lignite coal ---------»

• it contains 38% of carbon and it is third grade of coal.
• used for making fuels
• example as used for electric power (NTPC)

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Bituminous coal -----------»

• it contains 65% of carbon and it is second grade of coal.
• calorific value is very high
• example as used for producing fuel or coke

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