鉄鉱石の流動還元における充填物の影響

概要

論文の詳細を見る
To improve contacting efficiency between reducing gas and iron ore particles in fluidized bed reduction, the effect of internals which were arranged in 2-dimentional cold model was investigated. In the case of without internals, gas bubbles became large with increasing gas velocity, but with horizontal internals arranged in equilateral triangle in the model, gas bubbles were well dispersed and large size bubbles were not observed. Using 2-dimentional reduction reactor which had the same dimention as the cold model, the effect of internals on the reduction rate of iron ore by H_2 at 700℃ with the same bubbling condition as the cold model was investigated. The effect of internals on the overall reduction rate was not significant. From the relation of height of bed, gas conversion ratio and the level where large bubbles appeared in the cold model, it was considered that partial pressure of H_2O in H_2 almost approached to the equilibrium of FeO-Fe reduction before gas bubbles became large.
社団法人日本鉄鋼協会の論文
1977-08-01