Method for preparing blast furnace blow-in coal

摘要

Provided is a method that is for preparing blast furnace blow-in coal and that can, at a low cost, obtain blast furnace blow-in coal that suppresses occlusion by blast furnace blow-in ash or accretion of blast furnace blow-in ash in a pathway leading to a tuyere of a blast furnace main body, while suppressing a decrease in the amount of heat release. On the basis of data obtained by means of analyzing coal, a first and second coal type satisfying conditions (A, B) are selected (S2, S3), on the basis of the CaO content in the ash of the first and second coal types when the oxides of Al, Si, Ca, and Mg in the ash is 100 wt% and the Al