8mm 径と 60mm 径の高圧還元反応装置による粉鉄鉱石の速度パラメータの相関

概要

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Fundamental data of size effect of a high pressure reactor for iron ore reduction are important for commercialization of the process. In this paper, the correlation between kinetic parameters of pulverized iron ore 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 : In 1/(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 0.4∿0.6 at the same gas/ore ratio.
社団法人日本鉄鋼協会の論文
1982-06-01