What is the iron obtained from the blast furnace called?
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In the blast furnace, the reduction of iron oxides takes place at different temperature ranges.
Iron obtained from blast furnace:
“The iron obtained from blast furnace contains about carbon and many impurities in smaller amounts (e.g., Sulfur, Phosphorus, Silicon , and Manganese). This is known as pig iron and cast into a variety of shapes.”
Pig iron is different from cast iron in many ways that are discussed below:
Cast iron is made by melting pig iron in presence of scrap iron and coke in the hot air blast.
Cast iron has a lower carbon content than pig iron and it is extremely brittle as well as hard in nature.