Low grade phosphate rock can be used in electrical furnace, because__________________?
Correct answer: A. Of the better CaO/SiO2 balance for slag formation
- A. Of the better CaO/SiO2 balance for slag formation
- B. CaO content is less
- C. It is cheap
- D. It produces low cost product
Explanation
In an electric furnace, the CaO-to-SiO₂ ratio influences slag formation and melting behavior. Low-grade phosphate rock can be suitable when its composition provides a more favorable slag balance.
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