Yield of elemental phosphorous from rock phosphate is about _____________ percent?
Correct answer: B. 15-25
- A. 1-2
- B. 15-25
- C. 40-45
- D. 60-65
Explanation
In the electric-furnace process, only a fraction of the phosphorus in rock phosphate is recovered as elemental phosphorus, with typical yields around 15 to 25%. The higher ranges are not representative of this conversion.
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