Abstract:

Coke sample was taken from the air inlet of the 2 500m3 blast furnace in Shagang.The ash content,grain size,optical texture,degree of graphitization,reactivity and maximum bearing pressure were determined.The quality of the coke at the air inlet and the coke charge was compared.The study shows that the smaller the grain size of coke at air inlet,the higher the reactivity and degree of graphitization,the abrasion of the surface texture of the coke at the air inlet is more serious,the reaction layer is thinner,the compression strength doesn’t change,surface abrasion resistance is lower and the surface is easily pulverized.