Influence of the Mineralogical Property of Magnetite on the Reducibility of Indurated Pellet
Taneomi HARADA, Noboru SAKAMOTO, Shinichi KUROSAWA
The purpose of this paper is to point out the influence of the mineralogical properties of magnetite on the reducibility of indurated pellets.
Magnetite ores of various sources were used for experiment. Conditions for preparing pellets and testing their reducibility have been kept constant.
The results obtained are summarized as follows:
1) Fe (II)/Fe (III) ratio of natural magnetite deviates from the theoretical value of 0.50 to some extent.
2) The relation between Fe (II)/Fe (III) ratio and magnetization intensity of natural magnetite is similar to that of artificial one.
3) A positive correlation exists between Fe (II)/Fe (III) ratio of magnetite and the reducibility of indurated pellets.
4) A negative correlation exists between (Fe) II/Fe (III) ratio of magnetite and its oxidation rate.<BR.5) The result of 3) may be caused by the difference of Fe/O ratio in ferric oxide which in turn depends on the difference in Fe (II)/Fe (III) ratio of magnetite.