Abstract：The Fast Reduction Ore at Low Temperature and Smelting Process (FROLTS) was proposed, which includes three parts, the first part is the gasifier, where the sponge iron is smelted and reducing gas is produced, the second part is pre-reduction section, composed of two fast fluidized bed and preheating fluidized bed, where high metallization sponge iron (>85%) is obtained from fine ore, and the third part is the gas treatment section, composed of off-gas heat exchange, gas scrubber, gas compressor and CO2 removal system, whose main function conditions gas composition, temperature and flux. The FROLTS process use ore concentrate or <1mm fine ore, has some advantages such as low pre-reducing temperature, close to thermodynamic equilibrium and high metallization degree. The new process can reduce fuel consumption to 600 kg coal per ton hot metal, and realize a high efficient, energy-saving and friendly environmental ironmaking process.
2009, Vol. 44 
