Blast Furnace:
Blast Furnace: Blast Furnace is a type of metallurgical furnace, which is used to convert the solid raw material into a liquid state. In Blast furnace extraction of ferrous, non-ferrous and different alloys is possible. Due to a high temperature mixed with the carbon, iron ore, flux, etc. it may result in environmental implications like Slag, Wastewater, Toxic gases, etc.
Blast furnace consists of two parts it is a long cylindrical furnace, the top part is used to supply atmosphereic air into the furnace and this air is further supplied into the air-preheaters to increase the temperature of air supplied into the bottom portion of the furnace for heating the metals.
Air-preheaters increases the efficiency of the furnace.
The supply of heat and stable operation is possible by the flow of centralized gas which is controlled by the center coke charge.
The presence of CO is more at lower temperatures in blast furnace due to the non-equilibrium conditions present in the furnace. and to reduce the carbon dioxide the coke( Most of carbon presence) gets burned in air and develops carbon dioxide which results in high temperature used to heat the solid material and further carbon dioxide mix with the coke (Carbon) and develops CO.
There is a possibility in the removal of sulphur top slag when the oxygen ion activity of the slag must be more and the oxygen potential of pigman must be less.
To convert the solid raw material into a liquid state blast furnace is a more efficient process.
After completing the melting process, slag and molten metal gets drained from the bottom of the furnace, due to the low weight slag gets floated on the molten material and drained one after another.
In Blast furnace, Carbon monoxide is the actual reducing agent.
