Abstract
Oxy-coal injection effects on blast furnace raceway temperature were discussed based on coke sampling experiments through the tuyere of blast furnace, measurement by R-type thermocouple and two-color pyrometer. To analyze the reason for the increase of coal combustion ratio by oxy-coal injection, the oxygen concentration was measured in the simulated experimental of oxy-coal burner. The one-dimensional mathematical model considering the kinetics of coal and coke combustion was developed in other to simulate the combustion characteristics, such as gas temperature and composition in the raceway. It was found that the calculated peak temperature of gas well concurred with the measured temperature according to oxygen enrichment through the oxy-coal burner.
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