Iron is made in the Blast Furnaces by smelting iron bearing materials with the help of coke and air. The solid charge materials like sinter, sized iron ore, coke etc. are charged in the vertical shaft of the Blast Furnace at top and hot air blast is blown through the tuyeres located at the bottom. The oxygen from the hot air combines with the carbon of the coke and generates heat and carbon monoxide. The gases, while ascending upwards react with the descending charge materials. Eventually the charge melts and hot metal and slag are produced and tapped out. The cooled gas is also used as fuel in the plant. The Paul-Wurth, bell less top system is installed for furnace charging.