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.
