Extraction of Metals - Result Question 79
####82. When the ore haematite is burnt in air with coke around $2000^{\circ} C$ along with lime, the process not only produces steel but also produces a silicate slag, that is useful in making building materials such as cement. Discuss the same and show through balanced chemical equations.
$(1998,4 M)$
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Solution:
$$ \begin{aligned} C+O _2 \xrightarrow{2000^{\circ} C} & CO \ 3 CO+Fe _2 O _3 & \longrightarrow 2 Fe+3 CO _2 \ CaCO _3 & \longrightarrow CaO+CO _2 \ CaO+SiO _2 & \longrightarrow CaSiO _3 \end{aligned} $$
