Extraction of Metals - Result Question 79
When the ore haematite is burnt in air with coke around $2000^{\circ} C$ along with lime, the process not only produces iron 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:
$C+O_2 \xrightarrow{2000^{\circ} C} CO$
$3 CO+Fe _2 O _3 \longrightarrow 2 Fe+3 CO _2 $
$CaCO _3 \longrightarrow CaO+CO _2 $
$CaO+SiO _2 \longrightarrow \underset{Slag} {CaSiO _3}$
BETA
