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

Question

Filo · Accepted Answer

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

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

F e O + CO \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 T h o ma s s l a g 2 c a_{3} (P O_{4})_{2}

Question Text	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.
Answer Type	Text solution:1
Upvotes	150

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.

Text solutionVerified

Practice questions from similar books