ISIJ International
Online ISSN : 1347-5460
Print ISSN : 0915-1559
ISSN-L : 0915-1559
Size Degradation of Deadman Coke by Reaction with Molten FeO in Blast Furnace
Kohei SunaharaTakanobu InadaYuji Iwanaga
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1993 Volume 33 Issue 2 Pages 275-283


Since particle size of deadman coke greatly affects the permeability of gas and liquid in the lower part of a blast turnace, elucidation of the behavior of the replacement of deadman coke is an important subject. This paper describes the degradation of deadman coke by t he reaction with molten FeO. With use of a one-dimensional reaction model in which two kinetic parameters were determined from a fundamental experiment, the degradation of the deadman coke in an actual blast furnace was simulated. The effect of FeO in molten slag on the degradation of deadman coke concerns reduction ratio on the melting down of ore, temperature, and productivity. It takes about 2 weeks that vertical size distribution of degrading deadman coke becomes stationary pattern.

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