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Why dry grinding process is preferred in the Portland cement production?

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Why dry grinding process is preferred in the Portland cement production?

(a) Savings in heat

(b) High pressure

(c) High grade

(d) Low pressure

I have been asked this question in an interview.

My question comes from Inorganic Chemical topic in chapter Inorganic Chemical Industries of Chemical Technology

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Right option is (a) Savings in heat

For explanation I would say: Dry grinding process is predominant than wet grinding process because of savings in heat (less water to evaporate) and accurate control is possible. The sequence may include rough crushing.

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