A blast furnace is used for smelting to produce industrial metals where the concentrated iron ore, coke, and limestone are fed from the top, and a blast of hot air is blown into the bottom. All these ingredients are crushed into small pieces and mixed and then put on a device called hopper which controls the input.
At the bottom of the furnace the iron ore is chemically reduced. The blast reacts with the coke; carbon dioxide and carbon monoxide are formed at temperatures of up to 2000 °C. The carbon monoxide removes the oxygen from the iron ore resulting in pig iron production. Slag is formed from the other ore components and the additions. Casting bay
How is iron extracted from its ore? Its a long process which begins with Concentration through calcination roasting. Concentration removes the water and other volatile impurities such as sulphur and carbonates. This concentrated ore is mixed with limestone and Coke and fed into the blast furnace from the top. It is in the blast furnace that extraction of iron occurs.
Iron ore is a type of mineral and rock from which metallic iron is extracted economically.The process of mining consists of discovery of an iron ore deposit through extraction of iron ore and finally to returning the land to its natural state.
The extraction of iron from its ores is quite a technical process. The iron ore is first roasted in air to produce iron oxide which is mixed with coke and limestone and then further heated to a very high temperature in a blast furnace. These materials are loaded into the blast furnace from the top while a blast of hot air is introduced into it from beneath via small pipes known as tuyeres.