Abstract
A mathematical model for the isothermal fixed bed and one of the numerical calculating method are presented. The reaction rate used in this model is determined on the basis of the rate measured for single iron oxide pellet.
In order to clarify the availability of the mathematical model for analyzing the metallurgical reactors, change in the average fractional reduction over the whole bed with the lapse of time was observed during the reduction of iron oxide pellets with CO and H2 in the experimental fixed bed.
The observed data were in good agreement with the calculated values except in the case where the pellets cracked badly during the reduction. It is, therefore, found that the distributions of process variables in isothermal fixed bed are estimated with the considerable accuracy by the model mentioned above and that the reaction rates of pellets with CO and H2 used in this paper are expected to be available for the process analysis of metallurgical reactors.
