During the extraction of iron, slag produced is

In the metallurgy of iron, limestone is added as a flux that forms a lime-silica slag that floats on the top of the furnace and can be removed. Due to the heat in the furnace, lime stone decomposes and leads to the formation of calcium oxide. 3 2 CaCO (s) CaO(s)+CO (g) Calcium oxide thus formed reacts with the impurity and forms a slag which can be easily removed from the molten metal. 2 3 CaO+SiO CaSiO → 60. In metallurgy of iron, when lime stone is added to the blast furnace, the calcium ion ends up in (a) slag (b) gangue (c) metallic calcium (d) calcium carbonate The calcium ions en