Direct Reduced Iron (DRI)
Direct regeneration iron, also known as sponge iron. It is produced by direct oxidation or reduction of iron ore by reducing gas or carbon. Many ores are suitable for direct reduction. Direct reduction refers to solid-state processes that reduce iron oxides to metallic iron at temperatures below the melting point of iron. Reduced iron gets its name from these processes, an example of which is heating iron ore in a furnace at a temperature above 800 to 1200 degrees Celsius in the presence of reducing synthesis gas, a mixture of hydrogen and carbon monoxide. The appearance of sponge iron in the form of porous spherical pieces that have a spongy appearance, which is why it is called sponge iron. Sponge iron has a high grade of iron, which is more popular today due to the lack of iron waste and the increase in its price, as well as environmental problems. The grade and amount of iron in sponge iron is between 84 and 95%. The high grade of sponge iron makes it a suitable source for iron and steel production. Iron ore recovery in Iran is often done using Midrex technology. be.
