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When the ore haematite is burnt in air with coke around 2000 o 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.

When the ore haematite is burnt in air with coke around 2000oC 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.

Grade:11

1 Answers

Aditi Chauhan
askIITians Faculty 396 Points
7 years ago
Haematite (Fe2­O3) on burning with coke and lime at 2000oC result in the following reactions.
C + O2 → CO2
CO2+ O → 2CO
3CO + Fe2O3 → 2Fe + 3CO2 (Reduction of Fe2O3 to form steel)
(steel)
SiO2 + CaO → CaSiO3 (Slag, CaSiO3 is used as building material)
(Lime) (Slag)

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