What is the difference between sponge iron and DRI?
Iron ore is a mineral aggregate that can be converted economically into iron. Sponge is an intermediate product, which is produced from iron ore by means of direct reduction (= DRI or directly reduced iron) and that is then further reduced and smelted in an electric furnace.
Why DRI is called sponge iron?
Coal based Sponge-iron is a metallic product produced through direct reduction of iron ore in the solid state . As such it is also known as Direct Reduced Iron (DRI). After reduction of iron ore pellet the product resembles sponge because of pores left behind after removal of oxygen. As such it is called Sponge Iron.
What is the difference between DRI and HBI?
Direct reduced iron (DRI) is produced by the direct reduction of iron ore in the solid state. Hot briquetted iron (HBI )is DRI that has been briquetted under very high pressure and at elevated temperature to form dense briquettes that are much less porous than DRI and therefore much less reactive.
Is DRI pig iron?
Direct Reduced Iron (DRI) is the second most viable source of virgin iron used in steelmaking after pig iron or hot metal produced in blast furnaces. DRI is produced by direct reduction of iron ore using carbon monoxide and hydrogen.
How DRI is produced?
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. Many ores are suitable for direct reduction.
How is sponge iron produced?
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.
What is DRI in steel production?
Direct Reduced Iron (DRI) is the product of the direct reduction of iron ore in the solid state by carbon monoxide and hydrogen derived from natural gas or coal. Most gas-based direct reduction plants are part of integrated steel mini-mills, located adjacent to the electric arc furnace (EAF) steel plant.
What is direct reduced iron (DRI)?
Direct-reduced iron (DRI) is a type of metal substance produced from heating elemental iron in the presence of gas generated from natural gas or coal burning. Due to the low degree of oxygen present, DRI is prone to oxidation and has a higher corrosion rate compared to other types of iron.
What is direct reduced iron?
Direct reduced iron. Jump to navigation Jump to search. 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) to iron by a reducing gas or elemental carbon produced from natural gas or coal.
What is the reduced form of iron?
Direct reduced iron (DRI) is also known as sponge iron. It is produced by the reduction of iron ore (in the form of lumps or pellets) by either non-coking coal or a reducing gas produced by reforming of natural gas.
What is hot briquetted iron?
Hot Briquetted Iron (HBI) Overview. Hot Briquetted Iron (HBI) is a premium form of DRI that has been compacted at a temperature greater than 650° C at time of compaction and has a density greater than 5,000 kilograms per cubic metre (5,000 kg/m 3).