Why is limestone used in the extraction of iron?
Solution : (1) The ore of iron contains acidic gangue or impurity of silica, <br> (2) To remove silica gangue, basic flux like calcium oxide CaO, is required, which is obtained from the decomposition of limestone, . <br> <br> (3) Silica reacts with CaO and forms a fusible slage of . <br> <br> Therefore in the extraction of iron, lime is used.Extracting iron | Secondary Science 4 All,21-07-2014· Limestone-which is calcium carbonate, CaCO 3; Hot air is ‘blasted’ into the furnace, which provides the Oxygen necessary for carbon combustion. Role of limestone (calcium carbonate) in the extraction of iron. Limestone removes impurities present in the iron ore.what is the role of limestone in extraction of iron??,plzz ans it. UserName, Email or phone. Enter your password