Presence of free moisture in coal is most disadvantageous during_________________?
Correct answer: D. Its pulverisation (as it requires more power)
- A. None of these
- B. Combustion of fire slacks on the grates
- C. Handling (e.g. when emptying wagons)
- D. Its pulverisation (as it requires more power)
Explanation
Free moisture makes coal sticky, obstructs its passage through pulverisers and increases the power needed for grinding. Although wet coal can also create handling problems, pulverisation is the principal disadvantage identified here.
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