When the ore hermatite is burnt in air with coke around $2000 K$ 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.

Open in App

Solution

First, by calcination and roasting, the ferrous oxide is oxidized to ferric oxide. Then, in a blast furnace, smelting is done, where it is reduced to get iron.

$4 F e O + O_{2} \to 2 F e_{2} O_{3}$

$F e_{2} O_{3} + C O \to 2 F e_{3} O_{4} + C O_{2}$

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

$F e O + C O \to F e + C O_{2}$

In the basic Bessemer process for the manufacture of steel, the lining of the converter is made up of lime. The slag formed consists of $C a_{3} (P O_{4})_{2}$ .Phosphorus is oxidized to $P_{4} O_{10}$ which reacts with lime to form slag.

$P_{4} + 5 O_{2} \to P_{4} O_{10}$

$6 C a O + P_{4} O_{10} \to 2 c a_{3} (P O_{4})_{2} T h o m a s s l a g$

Suggest Corrections

Similar questions

2000 K

If the given statement is true enter 1, else enter 0.

When magnesium ribbon reacts with air, heat and light is produced. The balanced chemical equation is:

$2 Mg + O_{2} \to 2 MgO$

The reactant(s) in the reaction is/are:

When magnesium ribbon reacts with air, heat and light is produced. The balanced chemical equation is:

$2 Mg + O_{2} \to 2 MgO$

The reactant(s) in the reaction is/are:

Join BYJU'S Learning Program