Directly reduced iron (dri), also called as sponge iron,  is produced from the direct reduction of iron ore to iron by a reducing or elemental carbon produced from natural gas or coal. Direct reduction refers to solid-state processes which reduce iron oxides to metallic iron at temperatures below the melting point of iron. Reduced iron derives its name from these processes, one example being heating iron ore in a furnace at a high temperature of 800 to 1200 °c in the presence of the reducing gas.        specification         result (wt%)         test method    fe  (total)                   89.61              astm e 246-10        fe (metal)                  82.24                iso 5416     sio2                            2.56            astm e1621-05 /iso  12677-03 c                                  2.1              astm e1019-11        s                               0.0036             astm e1019-11    p                               0.04            astm e1621-05 /iso  12677-03  al2o3                         0.619           astm e1621-05/iso  12677-03  metalization             91.77                dri specs  

Directly reduced iron (dri), also called as sponge iron,  is produced from the direct reduction of iron ore to iron by a reducing or elemental carbon produced from natural gas or coal. Direct reduction refers to solid-state processes which reduce iron oxides to metallic iron at temperatures below the melting point of iron. Reduced iron derives its name from these processes, one example being heating iron ore in a furnace at a high temperature of 800 to 1200 °c in the presence of the reducing gas.        specification         result (wt%)         test method    fe  (total)                   89.61              astm e 246-10        fe (metal)                  82.24                iso 5416     sio2                            2.56            astm e1621-05 /iso  12677-03 c                                  2.1              astm e1019-11        s                               0.0036             astm e1019-11    p                               0.04            astm e1621-05 /iso  12677-03  al2o3                         0.619           astm e1621-05/iso  12677-03  metalization             91.77                dri specs