CH_4-H_2 混合ガスによるアイアンカーバイドの製造

概要

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In order to investigate the optimum operating conditions for the Fe_3C production from iron ore particles in CH_4-H_2 mixtures, experiments were carried out in a fixed bed or a fluidized bed in a flow of 3.33×10^<-5>m^3/s of CH_4-H_2 mixtures and temperature range from 650 to 950℃. The present study has revealed the most appropriate conditions that ratio of CH_4 to H_2 is 40/60 and temperature is 750℃. Under these experimental conditions most of the reduced iron was converted into Fe_3C for about 30 minutes. But during reaction, a part of the Fe_3C was decomposed into Fe and C, although Fe_3C formed at 750℃ was hard to decompose in comparison with those formed at other temperatures. During reaction, if unreduced FeO remained in iron ore it may accelerate the decomposition of Fe_3C. Therefore, porous iron ore is better to produce Fe_3C than dense iron ore because of high reducibility of porous iron ore.
社団法人日本鉄鋼協会の論文
1996-04-01