Tetsu-to-Hagane
Online ISSN : 1883-2954
Print ISSN : 0021-1575
ISSN-L : 0021-1575
Rate of Reduction of Iron Oxide Pellets with Hydrogen
Reijiro TAKAHASHIJun-ichiro YAGIYasuo OMORI
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1971 Volume 57 Issue 10 Pages 1597-1605

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Abstract

In order to analyse the reduction process in the metallurgical reactor, a reduction rate of single iron oxide pellet was expressed by a mathematical model and the rate parameters were determined.
Unreacted core model was employed to the reduction of the iron oxide pellet with hydrogen in the temperature range of 1100°-1400°K.
The activation energy of the pellet used was about 26kcal/mol. The calculated reduction curves based on this model almost coincided with the observed data under various operating conditions; those are reduction temperatures, diameters of the pellet, and compositions of the reducing gas. Furthermore, in the case where one of the experimental conditions was altered during the reduction, the calculated reduction curves were nearly consistent with the observed data.
It was found from these results that the reduction model in this paper could apply to process analysis of metallurgical reactor.

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© The Iron and Steel Institute of Japan
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