MetallurgyHard
Question
In the metallurgy of iron, the upper layer obtained in the bottom of blast furnace mainly contains :
Options
A.CaSiO3
B.spongy iron
C.Fe2O3
D.FeSiO3
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.
Slag being lighter and insoluble in molten metal floats over and thus forms upper layer.
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