The comparison of the reactivity of pulverized coal injected into blast furnace under diffrent dry-distillation temperature

Gasification reactivity of carbondioxide under diffrent dry distillation temperature were studied based on thermogravimetry with pulverized coal in several steel plants.The results show that,the carbon conversion of pulverized coal injection decreases with the increase of temperature,the maximum gasification rate increases gradually with the increase of temperature.Dynamic calculation shows that the gasification reaction series is 2/3,activity energy and pre-exponential factor increases with the increase of temperature.