Q. Consider the following statements with respect to the Coking Coal and the Lignite Coal:
- While Coking Coal is primarily used for metallurgical purpose, Lignite coal is primarily used in power generation
- Lignite coal comprises lion’s share of Indian coal
Which among the above statements is / are correct?
Answer:
Only 1
Notes: Prime Coking – Mainly used for metallurgical purpose.
Medium Coking – Mainly used in steel industry.
Semi Coking – Mainly in cement, fertilizer and sponge iron industries.
Non Coking Coal: Non- coking coal comprises lion’s share of Indian coal. Based on Useful Heat Value (UHV), it is classified into grades A to G for commercial use. A to C grades are considered as Superior and are used in cement, fertilizer and sponge iron industries. D to G grade, available in almost in all the coalfields, is considered as Inferior and is mostly used in power sector.
Lignite: It is commonly known as brown coal and is classified into grades A to C on the basis of Gross Calorific Value as per the requirement of the industries. It is considered as apt fuel for power generation especially due to its low ash content.