MetallurgyHardBloom L3

Question

Calcium silicate slag formed in extraction of iron

Options

A.prevents the reoxidation of molten iron.
B.catalyzes the combustion of carbon.
C.reduces CO2 to CO at the bottom of the furnace.
D.is used in cement industry.

Solution

Sol. Baeyer’s Process :

Al2O3 + NaOH → NaAlO2

Fe2O3 + NaOH →

Hall’s Process :

Al2O3 + Na2CO3 → NaAlO2

SiO2 + Na2CO3 →

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