Wet beneficiation of low grade iron ores, or tailings of 3554% Fe ...
WEBThe process uses coal gas for preheating for partial reduction. Hematite / limonite / goethite ores get converted into magnetite ore in 110 minutes depending on the size of iron ore, at temperatures of 500600 degree C. The leftover heat, after reduction, is utilized for 3 stage preheating of iron ore.