Research on Pellet Hydrogen Reduction Followed by Melting Separation for Utilizing Oolitic High-Phosphorus Iron Ore

In this paper, the utilizationUtilization processProcess of high-phosphorusPhosphorus ironIron ore, pelletPellet hydrogen reductionHydrogen reduction followed by melting separationMelting separation, was experimentally studied. After oxidation roasting, the oolitic structureStructure in the original ore powder was destroyed, and the content of Fe2+ in the pelletsPellet was 0.69 wt%. At the reduction temperatureTemperature of 1173 K, the metallization rate of pelletsPellet could reach 90% under N2:H2 = 1:1 atmosphere and the phosphorusPhosphorus content in the pelletPellet increased to 0.95 wt%. In the melting separationMelting separation stage, the molten ironIron with a phosphorusPhosphorus content of 0.34 wt% was obtained by mixing 15% CaO into the metalized pelletPellet, and the iron recoveryIron recovery was 88%.