Question

Bessemer converter is used for the preparation of:

• A. Steel
• B. Wrought iron
• C. Pig iron
• D. Cast iron

Answer 1

The correct option is A Steel

Bessemer converter is used for the preparation of steel. This process is based on the fact that the impurities present in the pig iron are completely oxidised to form almost pure wrought iron. It is then mixed with known amount of spiegeleisen (an alloy of Fe, Mn and C) to obtain steel.

$Si+O_2\to Si{O}_2$

$2Mn+O_2\to 2MnO$

$4P+5O_2\to 2P_2{O}_5$

$MnO+Si{O}_2\to \underset{slag}{MnSi{O}_3}$

$P_2{O}_5+3CaO\to \underset{slag}{C{a}_3(P{O}_4{)}_2}$

$CaO+Si{O}_2\to CaSi{O}_3$

$C{u}_{2}O+FeS\to C{u}_{2}S+FeO$

$FeO+Si{O}_2\to \underset{slag}{FeSi{O}_3}$