Temperature Distribution of Iron Ore Pellet Bed in Grate

The temperature distribution of iron ore pellet bed in grate has a significant effect on pellet production and quality control, but the related work is scarce. A well-designed test was successfully carried out by means of tracking measurement and the temperature distribution and variation in pellet layers were obtained. The effects of blast temperature, blast velocity and oxidation reaction on the pellet layer temperature were studied. According to the analysis, the inlet air temperature in the up-draught drying zone (UDD) and blast temperature in the Preheating I (PH I) zone should be raised, and the length of the down-draught drying zone (DDD) should be properly increased.