18.97.14.90
18.97.14.90
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SCIE SCOPUS
소결광의 CO 가스 환원과 H2 가스 환원과의 환원속도의 비교
Comparison of Reduction Rates of iron ore Sinter by CO and H2 gas
임병익(Byung Il Lim), 전전 경지(takayuki Maeda), 소야 양일(Yoichi Ono)
UCI I410-ECN-0102-2008-580-001847635

Seven kinds of sinters having different basicities were reduced at 900℃ with either 90%CO10%CO₂ gas mixture or Hz gas. The data were analyzed by the one-irrtertace unreacted-core model and the reduction rate changes by with CO and H: were compared. The results are summarized as follows;(1) The average reduction rates in H₂, were calculated from reduction curves between the reduction degree of 40% and 60% were 5∼7 times than that in CO except for one kind of sinter. (2) The ratio of the chemical reaction rate constant (Kc) between CO reduction and Hz reduction showed little difference except for one kind of sinter. The rate constants of Hz reduction were 2∼3 times higher than those of CO reduction. (3) the ratio of the effective diffusivity in the product layer (De) between CO reduction and H₂ Reduction was different among various sinters. The values of the effective diffusivity of H₂ reduction were 4∼14 times higher than Chose of CO reduction.

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