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.

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