還元鉄ペレットの溶鉄中への溶解速度におよぼすペレット中酸化鉄の種類の影響

概要

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The melting rate into iron melt of partly reduced iron pellets made from pure iron powder and iron oxide powder by pressing has been measured. The effects of the kind of iron oxides in pellets and the weight of pellets on the melting rate of pellets have been investgated. The following results are obtained : (1) FeO, Fe_3O_4 and Fe_2O_3 were identified in low reduction pellets produced commercially while only FeO was found in high reduction pellets. (2) The difference of melting rate among the pellets containing different iron oxides was small for the constant content of oxygen in reduced iron pellts. (3) The apparent activation energy of melting into iron melt of pellets containing FeO was 33 kcal/mol which was the same as that of those containing Fe_2O_3, while that of those containing Fe_3O_4 was 21 kcal/mol. (4) The maximum melting rate of pellets containing iron oxides was obtained at the range of 2.5∿3.5%C in iron melt. (5) The melting rate of pellets into iron melt increased with increasing the weight of pellets.
社団法人日本鉄鋼協会の論文
1980-04-01