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  • The main reactions occurring in the blast furnace during the extraction of iron from haematite are ________.

The main reactions occurring in the blast furnace during the extraction of iron from haematite are ________.

(i) \text {Fe}_{2}\text {O}_{3}+\text {3CO}\rightarrow \text {2Fe}+\text {3CO}_{2}

(ii) \text {FeO}+\text {SiO}_{2}\rightarrow \text {FeSiO}_{3}

(iii) \text {Fe}_{2}\text {O}_{3}+\text {3C}\rightarrow \text {2Fe}+\text {3CO}

(iv) \text {CaO}+\text {SiO}_{2}\rightarrow \text {CaSiO}_{3}

Answers (1)

The answer is the option (i, iv). The 2 main reactions taking place in blast furnace during extraction of iron are:

(i) Reduction of \text {Fe}_{2}\text {O}_{3}+\text {CO}\rightarrow \text {2FeO}+\text {CO}_{2}

                                              \text {2FeO}+\text {2CO}\rightarrow \text {2Fe}+\text {2CO}_{2}

                                              \text {Fe}_{2}\text {O}_{3}+\text {3CO}\rightarrow \text {2Fe}+\text {3CO}_{2}

(ii) Slag formation \text {CaO}+\text {SiO}_{2}\rightarrow \text {CaSiO}_{3} \; \text {Fusible slag}

 

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