A mathematical model has been developed for simulating the blast furnace operation with carbon composite agglomerates charging based on multi-fluid theory and reaction kinetics. In this model, the behaviors of carbon composite agglomerates are considered based on previously reported experimental research, and conservation equations and chemical reactions of carbon composite agglomerates are newly introduced. A series of calculations are performed to examine the effect of charging carbon

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... e agglomerates. The model calculation gives two-dimensional distributions of process variables and information on the overall operational parameters. It reveals that in-furnace temperature levels significantly decrease and the reduction of carbon composite agglomerates is retarded with carbon composite agglomerates charging ratio. The furnace performance is remarkably improved with the increase in carbon composite agglomerates rate. The productivity tends to increase while coke rate and total reducing agent rate show decreases at the different degree. KEY WORDS: carbon composite agglomerates, blast furnace, mathematical model, multi-fluid theory.