What is the process of making sponge iron?
Sponge iron is formed through the reduction of iron ore to metallic iron through reaction with carbon in the form of coal, etc. at approx. 1100 degree Celsius. Sponge iron is also referred to as direct reduced iron, metalized iron, or hot briquetted iron.
How steel is made sponge iron?
Compressed air helps make sponge iron for the steel industry. Sponge iron is produced from the direct reduction of iron ore to iron by a reducing gas or elemental carbon produced from natural gas or coal. When the iron ore is reduced, oxygen content in the ore is eliminated.
What is C Fe ratio in sponge iron?
around 0.42-0.44
The C/Fe ratio is around 0.42-0.44. Coal up to 30% ash content is successfully used. Blast furnace gas has been used in this process and has resulted in better reduction.
What is ABC in sponge iron plant?
It exits the kiln at a temperature of 900 °C and then enters to after burner chamber (ABC) and a horizontal dust settling chamber (DSC) which is located beneath the ABC.
What is meant by sponge iron?
Definition of sponge iron : iron in porous form or containing many voids specifically : crude iron made by subjecting the oxide ore to a reducing gas without melting.
Why is it called sponge iron?
WHY IS IT CALLED SPONGE IRON? Iron oxide ores taken out from the Earth are allowed to absorb carbon by a reduction process. In this natural reduction, as the iron ore is warmed up with carbon, it results in a surface with hole marks, hence the name “Sponge Iron”.
How many types of sponge iron are there?
Four sponge iron (SI1, SI2, SI3, and SI4) plants with different installed capacity and sponge iron (SI) production have been considered for studies based on the baseline methodology.
What is DRI process?
In a DR process, iron ore pellets and/or lump iron ores are reduced by a reducing gas to produce DRI or hot briquetted iron (HBI).
Which statement is correct for sponge iron?
Sponge iron is better than pig iron because it is rich in iron content. Sponge iron is porous while the pig iron is denser.
Who is the largest producer of sponge iron?
India
(iii) Sponge Iron: India, world’s largest producer of sponge iron (2018), has a host of coal based units located in the mineral-rich states of the country. Over the years, the coal based route has emerged as a key contributor and accounted for 79% of total sponge iron production in the country.
What is sponge iron?
Direct reduced iron (DRI), also called sponge iron, is produced from the direct reduction of iron ore (in the form of lumps, pellets, or fines) into iron by a reducing gas or elemental carbon produced from natural gas or coal.