Question

In the metallurgy of iron, when lime stone is added to the blast furnace, the calcium ion ends up in

Answer 1

Explanation: In blast furnace, the lime stone is decomposed to give lime and carbon dioxide. The lime obtained act as flux and combines with silica to form calcium silicate (slag).M

Answer 2

The limestone decomposes in the hot furnace, forming calcium oxide. This reacts with the sandy impurities (silicon dioxide) to form a slag. The main role of limestone in extraction of iron is to decomposes in hot furnace and form the calcium oxide.