Tetsu-to-Hagane
Online ISSN : 1883-2954
Print ISSN : 0021-1575
ISSN-L : 0021-1575
Correlation of Kinetic Parameters of High Pressure Reduction of Iron Ore Examined with φ8mm and φ60mm Fluidized Bed Reactor
Yoshikazu SUZUKISogo SAYAMAYasunori NISHIKAWAYoshinobu UEDAKyoji SATOToshio SATO
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1982 Volume 68 Issue 8 Pages 930-935

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Abstract

Fundamental data of size effect of a high pressure reactor for iron are reduction are important for commercialization of the process.
In this paper, the correlation between kinetic parameters of pulverized iron are reduction with a microreactor (8mm in diameter) and with a fluidized bed reactor (60mm in diameter) is presented. The effect of the reduction temperature, hydrogen pressure, hydrogen flow rate and sample weight on the reduction rate are discussed on the basis of a first order reaction: In1/1-f=k·t, where f is fractional reduction, k rate parameter, and t time.
The results indicated that reduction rate was much more influenced by hydrogen flow rate than by hydrogen pressure. The reduction rate parameters obtained with the fluidized bed reactor were lower than those with the microreactor by a factor of 0.40.6 at the same gas/ore ratio.

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© The Iron and Steel Institute of Japan
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