Influence of ore grade on coke ratio and coke batch of blast furnace
In order to study the influence of iron ore grade change on coke ratio and coke batch,and guide smelting low grade iron ore,the relationship between ore grade change and coke batch was obtained according to the fitting function of Rahm formula about the effect of ore grade change on coke ratio.The production process parameters were calculated on a 2 500 m3 blast furnace in Southwest of China based on the relationship.The results showed that the changes of ore grade significantly influenced coke ratio under the lower ore grade,and there was a positive correlation between coke batch and ore grade.