Effect of Fe2O3 on Blast Furnace Coal Combustion Under Local Oxygen Enrichment

The use of coke will be greatly reduced by much pulverized coal injection. The pulverized coal injection rate of blast furnaceBlast furnace can be greatly increased by local oxygen-enrichmentOxygen-enrichment method. However, the cooling effect of room-temperature oxygen delays the devolatilization process and the entire coal combustion process will be delayed. To increase the pyrolysis rate will weaken the cooling effect of room-temperature oxygen on coal combustion. The pyrolysis rate increases and activating energy decreases with Fe2O3FeO addition. In this study, the effect of Fe2O3 on coal combustion in the blast furnace was simulated. The effect of Fe2O3FeO without oxygen enrichment on coal burnout is unobvious. For local oxygen enrichmentOxygen-enrichment, the coal burnoutCoal burnout greatly increases and has a maximum increase of 22.03%.