Blast furnace slag is mainly molten_________________?
Correct answer: C. Calcium silicate
- A. Sand
- B. Magnesium silicate
- C. Calcium silicate
- D. Iron pyrite
Explanation
Blast-furnace slag is formed mainly from the reaction of silica with lime, producing calcium silicates, along with smaller amounts of alumina and magnesia. Hence calcium silicate is the principal constituent listed.
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