<報文>鐵鑛石の水素還元に於ての二, 三の観察

概要

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In the hydrogen-reduction-test of iron ore at constant temperature, we observed the following : (1) Although the degree of reduction is in accordance with their physico-chemical nature, in general, reduction proceeds rather rapidly in early stage and then becomes slower.(2) Higher the temperature of reduction, the greater the degree of reduction in early stage, but not always the case as the reduction proceeds. Frequently, in the temperature range of 700-800℃., reduction degree remains rather lower than that of 500-600℃. It may be attributed to the recrystallization or sintering of reduced iron and its nature towards diffusion.(3) Reduction in the early stage is largely governed by chemical reaction itself and then gradually transfer to the stage governed by diffusion.
東北大学の論文
1953-09-10