In the manufacture of Portland cement, the dry process is preferred over the wet process mainly because of:
A{'text': 'Lower fuel consumption in the kiln', 'label': 'A'}
B{'text': 'Higher clinker yield per tonne', 'label': 'B'}
C{'text': 'Lower water-cement ratio later', 'label': 'C'}
D{'text': 'Faster grinding of raw materials', 'label': 'D'}
Answer & Solution
Correct answer: A. {'text': 'Lower fuel consumption in the kiln', 'label': 'A'}
1. IGNOU ET-522 §1.2 ends the two-process description with: 'The dry process is considered to be economical as compared to wet process because of less consumption of fuel in the kiln.'
2. Yield, water-cement ratio and grinding speed are not the deciding factors named in the source.
3. Hence the deciding economic reason is the kiln fuel saving.
_Source: IGNOU ET-522 Concrete Technology, Block-1 Unit-1 Cement, §1.2, p. 6_
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