Mixing Characteristics of Oxygen with Pulverized Coal in Oxy-Coal Injection Process with Oxy-Coal Lance

The mixing characterstics of oxygen with pulverized coal in oxy-coal injection into blast furnace by oxy-coal lance are studied. It is found that oxygen concentration and pulverized coal concentration on the cross sections are similar to Gauss distribution, and attenuate as a power equation along axial direction of the blowpipe, and that a local oxygen enrichment area and a pulverized coal enrichment area can be formed. Futher analysis shows that the two areas are nearly match up, which can be improved by improving the structure of oxy-coal lance, and that the positions of the areas may be located by the position of oxy-coal lance.