Which of the following statements accurately characterizes the difference between the Slag formed in — Metallurgy and Isolation of Elements Chemistry Question

💡 Solution & Explanation

In the Blast Furnace for Iron, the native gangue is acidic $SiO_2$, so a basic flux (Limestone $\rightarrow$ $CaO$) is added to form Calcium silicate ($CaSiO_3$) slag. In Copper smelting/Bessemerisation, the primary impurity is basic $FeO$, so an acidic flux (Silica sand, $SiO_2$) is added to form Iron silicate ($FeSiO_3$) slag.