Pig iron is the metallic ore that contains 90% of iron. Pig iron is used for making steel and pure iron units. It has very high carbon content along with silica and another constituent of dross. Pig iron made from smelting iron indulges with the high amount of carbon for further processing steps. When the metal is cool and hardened, the small ingots break into the runner and named as the pig iron. The process of smelting the iron has been used from the ancient time.
· Traditionally, pig iron is used in finery forges, pudding furnaces, and steel. In this process, pig iron is melted and strong air is directed over. This helps to dissolve the impurities of iron. The intermediate product of puddling is known as fine metal and refined iron.