Q572
Slag is a name given for
A.
Molten iron
B.
Molten sand
C.
Molten alumina
AnswerD.
Molten calcium silicate
Answer: Option C
Solution
Answer: Option C
Solution:
Slag is a partially vitreous by-product of the process of smelting ore, which separates the desired metal fraction from the unwanted fraction. A good example is steelmaking slag: quicklime and magnesite are introduced for refractory protection, neutralizing the alumina and silica separated from the metal, and assist in the removal of sulfur and phosphorus from the steel.