Question
Question: In the metallurgy of iron, the upper layer obtained in the bottom of blast furnace mainly contains:...
In the metallurgy of iron, the upper layer obtained in the bottom of blast furnace mainly contains:
A
CaSiO3
B
Spongy iron
C
Fe2O3
D
FeSiO3
Answer
CaSiO3
Explanation
Solution
CaO + SiO2 —® CaSiO3 (slag) (Haematite ore contains silica as impurities).
Slag being lighter and insoluble in molten metal floats over and thus forms upper layer.