Question

What is the iron obtained from the blast furnace called?

Answer 1

Blast furnace:

• In the blast furnace, the reduction of iron oxides takes place at different temperature ranges.

Iron obtained from blast furnace:

• “The iron$\left(\mathrm{Fe}\right)$ obtained from blast furnace contains about $4\%$ carbon and many impurities in smaller amounts (e.g., Sulfur$\left(\mathrm{S}\right)$, Phosphorus$\left(\mathrm{P}\right)$, Silicon$\left(\mathrm{Si}\right)$ , and Manganese$\left(\mathrm{Mn}\right)$). 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.