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(a) Write chemical reactions taking plac...

(a) Write chemical reactions taking place in the blast furnace at reduction zone, slag formation zone and combustion zone during the extraction of Iron.

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At reduction zone : Ferric oxide is reduced to iron carbon monoxide
`Fe_(2)O_(3)+3COoverset(600-700^(@)C)rarr2Fe+3CO_(2)`
Slag formation zone : Limestone decomposes to form calcium oxide, which then combines with silica to form calcium silicate slag
`CaCO_(3)overset(900^(@)C)rarrCaO+CO_(2)`
`CaO+SiO_(2)rarrCaSiO_(3)` Calcium Silicate (slag)
Combustion Zone : Coke burns in oxygen to form carbon dioxide.
`C+O_(2)overset(1500^(@)C)rarrCO_(2)`
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