Q73
The purpose of injection of calcium into liquid steel is to P. replace Al2O3 inclusions by CaO inclusions Q. modify Al2O3 inclusions into calcium aluminate inclusions R. reduce sulfur content of steel S. reduce nitrogen content of steel
A.
P, Q
B.
P, R
C.
Q, R
AnswerD.
Q, S
Answer: Option C
Solution
Answer: Option C
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