Abstract
Efforts have been made for some years to construct a semi-pilot plant for iron are reduction by fluidizing technique in Dowa Mining Industry Company. This paper deals with the fundamental consideration of iron are reduction by coke-oven gas.
The results obtained are as follows.
(1) Theoretical and actual reducing of coke-oven gas is calculated from the view point of equilibrium.
(2) Rate constant is obtained experimentally which consists of gas film coefficient, diffusion coefficient and surface reaction coefficient. By using this rate constant, it is expected that almost theoretical consumption of the gas should be achieved in batch operation of a fluidizing roaster.
(3) From an experiment with the fluidizing roaster (100mm diam.), it was concluded that aggregation of particles occurred in the roaster.
