The flux used in the preparation of wrought iron from cast iron in reverberatory furnace is

The flux used in the preparation of wrought iron from cast iron in reverberatory furnace is
  1. $\mathrm{SiO}_2$
  2. $\mathrm{CaCO}_3$
  3. C
  4. NaCN

Solution

$\mathrm{Fe}_2 \mathrm{O}_3+3 \dot{\mathrm{C}} \longrightarrow 2 \mathrm{Fe}+3 \mathrm{CO}$
Lime stone $\left(\mathrm{CaCO}_3\right)$ is added as a flux and sulphur, silicon and phosphorus are oxidixed and passed into the slag.

Asked in: AP EAMCET 2024 (21 May Shift 2)

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