Iron is produced in the Blast Furnace 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 from top and hot air blast is blown through tuyeres located at the bottom. The oxygen present in hot air combines with the carbon of coke and generates heat and carbon monoxide (reducing agent). The reducing gases, while ascending upwards comes into contact with the descending charge materials. Eventually the charge gets reduced and hot metal, slag and BF gas are produced. Hot metal and slag is tapped from tap hole. The Blast Furnace gas which comes out from top of the furnace is cleaned and used as fuel in the plant.