The equations of the production of iron in the blast furnace are given- Answer the following questions- C - O2 - CO2 CO2 - C - 2CO CaCO3 - CaO - CO2 CaO - SiO2 - CaSiO3 Fe2O3 - 3CO - 2 Fe - 3CO2 Which is the main impurity found in haematite - Which substances is used to remove the gangue -

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Extraction of Iron

The equations...

Question

The equations of the production of iron in the blast furnace are given. Answer the following questions.
$C + O_{2} \to C O_{2}$
$C O_{2} + C \to 2 C O$
$C a C O_{3} \to C a O + C O_{2}$
$C a O + S i O_{2} \to C a S i O_{3}$
$F e_{2} O_{3} + 3 C O \to 2 F e + 3 C O_{2}$
Which is the main impurity found in haematite ? Which substances is used to remove the gangue ?

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C + O_{2} \to C O_{2}

C O_{2} + C \to 2 C O

C a C O_{3} \to C a O + C O_{2}

C a O + S i O_{2} \to C a S i O_{3}

F e_{2} O_{3} + 3 C O \to 2 F e + 3 C O_{2}

F e_{2} O_{3} + 3 C \to 2 F e + 3 C O

C a C O_{3} \to C a O + C O_{2}

2 C + O_{2} \to 2 C O

F e_{2} O_{3} + 3 C O \to 2 F e + 3 C O_{2}

(I)

C a O

(I I)

(I I I)

C O_{2}

Assertion – The non-fusible impurities present in iron ore are removed by $C a C O_{3}$ .

Reason: $C a C O_{3}$ which decomposes into $C a O$ and $C O_{2}$ . The $C a O$ formed reacts with $S i O_{2}$ to remove silica

The equilibrium constant for the reaction,

CaCO₃(s) ⇌ CaO(s) + CO₂(g), is

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