Production of one ton of cement requires about _______________ tons of limestone ?
Correct answer: B. 1.2
- A. 0.6
- B. 1.2
- C. 2.2
- D. 3.8
Explanation
Limestone supplies most of the calcium oxide in cement, but part of its mass is lost as carbon dioxide during calcination. On the usual cement raw-material basis, about 1.2 tons of limestone are required per ton of cement.
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