In the blast furnance(Iron ore) process which element displaces Iron and classify that element as metal, non-metal or metalloid?

In a blast furnace, iron is extracted from its ore
hematite. The substances added in the blast furnace which undergo reaction are hematite,
coke and limestone.

The coke, which is primarily carbon
burns to form carbon dioxide

C + O2 -->
CO2

The carbon dioxide reacts with excess carbon to form
carbon monoxide

C + CO2 -->
2CO

Carbon monoxide is a reducing agent and reacts with the
oxide of iron Fe2O3

Fe2O3 + CO --> 2Fe +
3CO2

The limestone that has been added, is decomposed to
calcium oxide

CaCO3 --> CaO +
CO2

Calcium oxide reacts with impurities, primarily silicon
dioxide that is present in the iron ore to form CaSiO3

CaO
+ SiO2 --> CaSiO3

The resultant compound floats
above the molten iron as slag which is extracted
separately.

Iron produced in a blast furnace has a lot of
carbon as impurity which makes its direct application difficult. The iron has to be
treated further before it can be used to make products or iron or converted to
steel.

The response to your questions are: Carbon is the
element that displaces iron in the iron ore. Carbon is a
non-metal.